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SmartReader Plus 4 – Single-Port Pressure Data Logger
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SmartReader Plus 4 – Single-Port Pressure Data Logger

The SmartReader Plus 4 is a general-purpose, single-port pressure data logger designed for monitoring air and compressed air systems over time. With multiple pressure range options—from inches of water column to 150 PSI—it provides practical trend data for airflow diagnostics, pneumatic systems, and industrial compressed air applications.

Key Features

  • Single-port pressure measurement - Measures pressure relative to ambient conditions (gauge or absolute, depending on model).
  • Multiple pressure ranges available - Supports airflow-related pressures (inWC) as well as pneumatic and compressed air systems (PSI).
  • Integrated ambient temperature sensing - Internal temperature measurement provides context for pressure trends.
  • Optional remote temperature & humidity monitoring - Supports an external temperature/RH probe for environmental context when required.
  • Four-channel data logging - Simultaneously logs pressure, temperature, and optional external channels.
  • Battery-powered, long-term operation - Designed for unattended deployments lasting days, weeks, months or even years.
  • TrendReader® software compatible - Simple configuration, data download, and trend analysis using TrendReader software.

If you are looking for two-port differential pressure logging, please visit our SmartReader Plus 4 LPD Low Pressure Differential Logger page.

$1,331.00 USD

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Description Specifications Accessories Software Documentation Q&A Calibration

Designed for Pressure Trend Monitoring in Air and Compressed Air Systems

The SmartReader Plus 4 is a single-port pressure data logger designed to capture how air and compressed air systems behave over time. Rather than providing a momentary snapshot, it records pressure trends—along with temperature and optional humidity—so technicians and engineers can diagnose issues that only appear under real operating conditions.

It is well suited for applications where understanding changes, patterns, and system response is more important than a single absolute reading.

Single-Port Pressure Measurement Explained

The SmartReader Plus 4 uses a single pressure port, meaning it measures pressure relative to ambient atmospheric pressure (gauge or absolute, depending on the selected model). This approach is ideal for trend-based diagnostics, where the goal is to observe how pressure rises, falls, or fluctuates as system conditions change.

Because it measures pressure at a single point, the SmartReader Plus 4 does not directly measure true differential pressure between two locations. Instead, it provides valuable insight into system behavior by showing how pressure at a given point responds over time to loading, airflow changes, or demand.

Pressure Range Options and Typical Applications

The SmartReader Plus 4 is available in multiple pressure ranges to suit different air and compressed air applications.

0–10 inches water column (inWC)

This range is best suited for airflow-related pressure measurements, such as:

  • Pressure drop trends across HVAC filters

  • Coil and heat exchanger pressure drop

  • Duct static pressure (supply or return)

  • Fan and air system performance diagnostics

This range is intended for airflow-induced pressures and system diagnostics—not for pneumatic control air or fine building pressurization measurements.

5 PSI and 30 PSI models

These models are well suited for:

  • Pneumatic control systems

  • Low-pressure compressed air lines

  • Actuators, regulators, and control air diagnostics

They align with typical pneumatic operating pressures and provide useful resolution for troubleshooting and performance evaluation.

100 PSI and 150 PSI models

These models are intended for:

  • Industrial compressed air systems

  • Equipment supply pressure monitoring

  • Compressor, regulator, and distribution system diagnostics

They are ideal for plant air systems operating in the 60–150 PSI range.

Temperature and Optional Humidity Context

In addition to pressure, the SmartReader Plus 4 includes an internal ambient temperature sensor and supports an optional remote temperature and humidity probe. This allows pressure data to be viewed in the context of environmental conditions, which can be helpful when diagnosing air system behavior influenced by temperature or moisture.

Low-Pressure Differential Applications

For applications involving very small pressure differences or true differential pressure measurement, such as building pressurization, room-to-room pressure relationships, or cleanroom and healthcare environments, a dedicated differential pressure logger is recommended. For this, ACR offers the SmartReader Plus 4 LPD, a dual-port low-pressure differential data logger designed specifically for these applications. The LPD model is available in pressure ranges from 0.5 inches to 10 inches of water column and uses separate high (+) and low (–) pressure ports to measure true differential pressure.

In these cases, the SmartReader Plus 4 LPD is the appropriate choice when the pressure difference itself, rather than a single-point pressure trend, is the primary measurement of interest.

Specifications

Accessories ACR ET Series Temperature Probes or any NTC thermistor probe
Calibrated Accuracy +/- 0.5% of full scale @ 25ºC (77ºF)
Range, Resolution, Accuracy +/- 10″ H20; 0.006″; +/- 2% FS @ 25ºC (77ºF)
0 to 5 psi (30 kPa); 0.003 psi (0.02 kPa); +/- 1% FS @ 25ºC (77ºF)
0 to 30 psi (200 kPa); 0.015 psi (0.10 kPa); +/- 0.5% FS @ 25ºC (77ºF)
0 to 100 psi (700 kPa); 0.05 psi (0.34 kPa); +/- 0.5% FS @ 25ºC (77ºF)
Warranty 3 – years

Accessories

Software & Interface Cable are required for full functionality of the product.

Display Module Gen purpose thermistor probe High Temp thermistor probe Oven Temp thermistor probe Penetration thermistor probe Weatherproof Box

Software

ACR software tools are intuitive and flexible, allowing you to easily configure ACR data loggers to collect the data you need. Once downloaded, your data is displayed in presentation-quality graphs and can be converted into popular formats for use with spreadsheet programs, document editors, and other third-party applications.

TrendReader Full License TrendReader Interface Pkg TrendReader on USB Full

Documentation

For a product sheet, please click below for a pdf version.

Product Sheet

A link to the Manual is available by clicking on the button below.

SmartReader Plus Manual

Calibration

Data loggers are often used in highly regulated environments such as food and pharmaceutical production and storage where strict safety regulations apply. Regulatory agencies generally require proof of calibration.

ACR calibrations are performed using reference standards that have been calibrated and are traceable to the US National Institute of Standards & Technology (NIST). This ensures that all ACR data loggers meet, and perform to, their published specifications, allowing you to be confident that they will assist you in achieving your compliance requirements.

Calibration certificates are provided with every calibration we perform. ACR Systems is an ISO 9001:2015 registered company and calibration records are kept as part of our quality system and can be made available for customer audits.

Calibration Service

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This approach is ideal for trend-based diagnostics, where the goal is to observe how pressure rises, falls, or fluctuates as system conditions change.\u003c\/p\u003e\n\u003cp data-end=\"1704\" data-start=\"1395\"\u003eBecause it measures pressure at a single point, the SmartReader Plus 4 does not directly measure true differential pressure between two locations. Instead, it provides valuable insight into system behavior by showing how pressure at a given point responds over time to loading, airflow changes, or demand.\u003c\/p\u003e\n\u003chr data-end=\"1709\" data-start=\"1706\"\u003e\n\u003ch3 data-end=\"1762\" data-start=\"1711\"\u003ePressure Range Options and Typical Applications\u003c\/h3\u003e\n\u003cp data-end=\"1882\" data-start=\"1764\"\u003eThe SmartReader Plus 4 is available in multiple pressure ranges to suit different air and compressed air applications.\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003e\u003cstrong\u003e0–10 inches water column (inWC)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003eThis range is best suited for airflow-related pressure measurements, such as:\u003c\/p\u003e\n\u003cul data-end=\"2173\" data-start=\"2004\"\u003e\n\u003cli data-end=\"2046\" data-start=\"2004\"\u003e\n\u003cp data-end=\"2046\" data-start=\"2006\"\u003ePressure drop trends across HVAC filters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2086\" data-start=\"2047\"\u003e\n\u003cp data-end=\"2086\" data-start=\"2049\"\u003eCoil and heat exchanger pressure drop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2128\" data-start=\"2087\"\u003e\n\u003cp data-end=\"2128\" data-start=\"2089\"\u003eDuct static pressure (supply or return)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2173\" data-start=\"2129\"\u003e\n\u003cp data-end=\"2173\" data-start=\"2131\"\u003eFan and air system performance diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2326\" data-start=\"2175\"\u003eThis range is intended for airflow-induced pressures and system diagnostics—not for pneumatic control air or fine building pressurization measurements.\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003e\u003cstrong\u003e5 PSI and 30 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003eThese models are well suited for:\u003c\/p\u003e\n\u003cul data-end=\"2508\" data-start=\"2392\"\u003e\n\u003cli data-end=\"2419\" data-start=\"2392\"\u003e\n\u003cp data-end=\"2419\" data-start=\"2394\"\u003ePneumatic control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2455\" data-start=\"2420\"\u003e\n\u003cp data-end=\"2455\" data-start=\"2422\"\u003eLow-pressure compressed air lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2508\" data-start=\"2456\"\u003e\n\u003cp data-end=\"2508\" data-start=\"2458\"\u003eActuators, regulators, and control air diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2641\" data-start=\"2510\"\u003eThey align with typical pneumatic operating pressures and provide useful resolution for troubleshooting and performance evaluation.\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003e\u003cstrong\u003e100 PSI and 150 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003eThese models are intended for:\u003c\/p\u003e\n\u003cul data-end=\"2842\" data-start=\"2707\"\u003e\n\u003cli data-end=\"2742\" data-start=\"2707\"\u003e\n\u003cp data-end=\"2742\" data-start=\"2709\"\u003eIndustrial compressed air systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2781\" data-start=\"2743\"\u003e\n\u003cp data-end=\"2781\" data-start=\"2745\"\u003eEquipment supply pressure monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2842\" data-start=\"2782\"\u003e\n\u003cp data-end=\"2842\" data-start=\"2784\"\u003eCompressor, regulator, and distribution system diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2915\" data-start=\"2844\"\u003eThey are ideal for plant air systems operating in the 60–150 PSI range.\u003c\/p\u003e\n\u003chr data-end=\"2920\" data-start=\"2917\"\u003e\n\u003ch3 data-end=\"2967\" data-start=\"2922\"\u003eTemperature and Optional Humidity Context\u003c\/h3\u003e\n\u003cp data-end=\"3311\" data-start=\"2969\"\u003eIn addition to pressure, the SmartReader Plus 4 includes an internal ambient temperature sensor and supports an optional remote temperature and humidity probe. This allows pressure data to be viewed in the context of environmental conditions, which can be helpful when diagnosing air system behavior influenced by temperature or moisture.\u003c\/p\u003e\n\u003chr data-end=\"3316\" data-start=\"3313\"\u003e\n\u003ch3 data-end=\"3360\" data-start=\"3318\"\u003eLow-Pressure Differential Applications\u003c\/h3\u003e\n\u003cp data-end=\"3636\" data-start=\"3362\"\u003eFor applications involving very small pressure differences or true differential pressure measurement, such as building pressurization, room-to-room pressure relationships, or cleanroom and healthcare environments, a dedicated differential pressure logger is recommended. For this, ACR offers the \u003ca href=\"https:\/\/www.acrdatasolutions.com\/products\/smartreader-plus-4-lpd\"\u003eSmartReader Plus 4 LPD\u003c\/a\u003e, a dual-port low-pressure differential data logger designed specifically for these applications. 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Rather than providing a momentary snapshot, it records pressure trends—along with temperature and optional humidity—so technicians and engineers can diagnose issues that only appear under real operating conditions.\u003c\/p\u003e\n\u003cp data-end=\"1004\" data-start=\"857\"\u003eIt is well suited for applications where understanding changes, patterns, and system response is more important than a single absolute reading.\u003c\/p\u003e\n\u003chr data-end=\"1009\" data-start=\"1006\"\u003e\n\u003ch3 data-end=\"1057\" data-start=\"1011\"\u003eSingle-Port Pressure Measurement Explained\u003c\/h3\u003e\n\u003cp data-end=\"1393\" data-start=\"1059\"\u003eThe SmartReader Plus 4 uses a single pressure port, meaning it measures pressure relative to ambient atmospheric pressure (gauge or absolute, depending on the selected model). This approach is ideal for trend-based diagnostics, where the goal is to observe how pressure rises, falls, or fluctuates as system conditions change.\u003c\/p\u003e\n\u003cp data-end=\"1704\" data-start=\"1395\"\u003eBecause it measures pressure at a single point, the SmartReader Plus 4 does not directly measure true differential pressure between two locations. Instead, it provides valuable insight into system behavior by showing how pressure at a given point responds over time to loading, airflow changes, or demand.\u003c\/p\u003e\n\u003chr data-end=\"1709\" data-start=\"1706\"\u003e\n\u003ch3 data-end=\"1762\" data-start=\"1711\"\u003ePressure Range Options and Typical Applications\u003c\/h3\u003e\n\u003cp data-end=\"1882\" data-start=\"1764\"\u003eThe SmartReader Plus 4 is available in multiple pressure ranges to suit different air and compressed air applications.\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003e\u003cstrong\u003e0–10 inches water column (inWC)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003eThis range is best suited for airflow-related pressure measurements, such as:\u003c\/p\u003e\n\u003cul data-end=\"2173\" data-start=\"2004\"\u003e\n\u003cli data-end=\"2046\" data-start=\"2004\"\u003e\n\u003cp data-end=\"2046\" data-start=\"2006\"\u003ePressure drop trends across HVAC filters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2086\" data-start=\"2047\"\u003e\n\u003cp data-end=\"2086\" data-start=\"2049\"\u003eCoil and heat exchanger pressure drop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2128\" data-start=\"2087\"\u003e\n\u003cp data-end=\"2128\" data-start=\"2089\"\u003eDuct static pressure (supply or return)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2173\" data-start=\"2129\"\u003e\n\u003cp data-end=\"2173\" data-start=\"2131\"\u003eFan and air system performance diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2326\" data-start=\"2175\"\u003eThis range is intended for airflow-induced pressures and system diagnostics—not for pneumatic control air or fine building pressurization measurements.\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003e\u003cstrong\u003e5 PSI and 30 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003eThese models are well suited for:\u003c\/p\u003e\n\u003cul data-end=\"2508\" data-start=\"2392\"\u003e\n\u003cli data-end=\"2419\" data-start=\"2392\"\u003e\n\u003cp data-end=\"2419\" data-start=\"2394\"\u003ePneumatic control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2455\" data-start=\"2420\"\u003e\n\u003cp data-end=\"2455\" data-start=\"2422\"\u003eLow-pressure compressed air lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2508\" data-start=\"2456\"\u003e\n\u003cp data-end=\"2508\" data-start=\"2458\"\u003eActuators, regulators, and control air diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2641\" data-start=\"2510\"\u003eThey align with typical pneumatic operating pressures and provide useful resolution for troubleshooting and performance evaluation.\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003e\u003cstrong\u003e100 PSI and 150 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003eThese models are intended for:\u003c\/p\u003e\n\u003cul data-end=\"2842\" data-start=\"2707\"\u003e\n\u003cli data-end=\"2742\" data-start=\"2707\"\u003e\n\u003cp data-end=\"2742\" data-start=\"2709\"\u003eIndustrial compressed air systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2781\" data-start=\"2743\"\u003e\n\u003cp data-end=\"2781\" data-start=\"2745\"\u003eEquipment supply pressure monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2842\" data-start=\"2782\"\u003e\n\u003cp data-end=\"2842\" data-start=\"2784\"\u003eCompressor, regulator, and distribution system diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2915\" data-start=\"2844\"\u003eThey are ideal for plant air systems operating in the 60–150 PSI range.\u003c\/p\u003e\n\u003chr data-end=\"2920\" data-start=\"2917\"\u003e\n\u003ch3 data-end=\"2967\" data-start=\"2922\"\u003eTemperature and Optional Humidity Context\u003c\/h3\u003e\n\u003cp data-end=\"3311\" data-start=\"2969\"\u003eIn addition to pressure, the SmartReader Plus 4 includes an internal ambient temperature sensor and supports an optional remote temperature and humidity probe. This allows pressure data to be viewed in the context of environmental conditions, which can be helpful when diagnosing air system behavior influenced by temperature or moisture.\u003c\/p\u003e\n\u003chr data-end=\"3316\" data-start=\"3313\"\u003e\n\u003ch3 data-end=\"3360\" data-start=\"3318\"\u003eLow-Pressure Differential Applications\u003c\/h3\u003e\n\u003cp data-end=\"3636\" data-start=\"3362\"\u003eFor applications involving very small pressure differences or true differential pressure measurement, such as building pressurization, room-to-room pressure relationships, or cleanroom and healthcare environments, a dedicated differential pressure logger is recommended. For this, ACR offers the \u003ca href=\"https:\/\/www.acrdatasolutions.com\/products\/smartreader-plus-4-lpd\"\u003eSmartReader Plus 4 LPD\u003c\/a\u003e, a dual-port low-pressure differential data logger designed specifically for these applications. The LPD model is available in pressure ranges from 0.5 inches to 10 inches of water column and uses separate high (+) and low (–) pressure ports to measure true differential pressure.\u003c\/p\u003e\n\u003cp data-end=\"4158\" data-start=\"3966\"\u003eIn these cases, the SmartReader Plus 4 LPD is the appropriate choice when the pressure difference itself, rather than a single-point pressure trend, is the primary measurement of interest.\u003c\/p\u003e"}
Translation missing: en.general.search.loading
{"id":6149855117483,"title":"SmartReader Plus 4 – Single-Port Pressure Data Logger","handle":"smartreader-plus-4","description":"\u003ch3 data-end=\"501\" data-start=\"425\"\u003eDesigned for Pressure Trend Monitoring in Air and Compressed Air Systems\u003c\/h3\u003e\n\u003cp data-end=\"855\" data-start=\"503\"\u003eThe SmartReader Plus 4 is a single-port pressure data logger designed to capture how air and compressed air systems behave over time. Rather than providing a momentary snapshot, it records pressure trends—along with temperature and optional humidity—so technicians and engineers can diagnose issues that only appear under real operating conditions.\u003c\/p\u003e\n\u003cp data-end=\"1004\" data-start=\"857\"\u003eIt is well suited for applications where understanding changes, patterns, and system response is more important than a single absolute reading.\u003c\/p\u003e\n\u003chr data-end=\"1009\" data-start=\"1006\"\u003e\n\u003ch3 data-end=\"1057\" data-start=\"1011\"\u003eSingle-Port Pressure Measurement Explained\u003c\/h3\u003e\n\u003cp data-end=\"1393\" data-start=\"1059\"\u003eThe SmartReader Plus 4 uses a single pressure port, meaning it measures pressure relative to ambient atmospheric pressure (gauge or absolute, depending on the selected model). This approach is ideal for trend-based diagnostics, where the goal is to observe how pressure rises, falls, or fluctuates as system conditions change.\u003c\/p\u003e\n\u003cp data-end=\"1704\" data-start=\"1395\"\u003eBecause it measures pressure at a single point, the SmartReader Plus 4 does not directly measure true differential pressure between two locations. Instead, it provides valuable insight into system behavior by showing how pressure at a given point responds over time to loading, airflow changes, or demand.\u003c\/p\u003e\n\u003chr data-end=\"1709\" data-start=\"1706\"\u003e\n\u003ch3 data-end=\"1762\" data-start=\"1711\"\u003ePressure Range Options and Typical Applications\u003c\/h3\u003e\n\u003cp data-end=\"1882\" data-start=\"1764\"\u003eThe SmartReader Plus 4 is available in multiple pressure ranges to suit different air and compressed air applications.\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003e\u003cstrong\u003e0–10 inches water column (inWC)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003eThis range is best suited for airflow-related pressure measurements, such as:\u003c\/p\u003e\n\u003cul data-end=\"2173\" data-start=\"2004\"\u003e\n\u003cli data-end=\"2046\" data-start=\"2004\"\u003e\n\u003cp data-end=\"2046\" data-start=\"2006\"\u003ePressure drop trends across HVAC filters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2086\" data-start=\"2047\"\u003e\n\u003cp data-end=\"2086\" data-start=\"2049\"\u003eCoil and heat exchanger pressure drop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2128\" data-start=\"2087\"\u003e\n\u003cp data-end=\"2128\" data-start=\"2089\"\u003eDuct static pressure (supply or return)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2173\" data-start=\"2129\"\u003e\n\u003cp data-end=\"2173\" data-start=\"2131\"\u003eFan and air system performance diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2326\" data-start=\"2175\"\u003eThis range is intended for airflow-induced pressures and system diagnostics—not for pneumatic control air or fine building pressurization measurements.\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003e\u003cstrong\u003e5 PSI and 30 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003eThese models are well suited for:\u003c\/p\u003e\n\u003cul data-end=\"2508\" data-start=\"2392\"\u003e\n\u003cli data-end=\"2419\" data-start=\"2392\"\u003e\n\u003cp data-end=\"2419\" data-start=\"2394\"\u003ePneumatic control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2455\" data-start=\"2420\"\u003e\n\u003cp data-end=\"2455\" data-start=\"2422\"\u003eLow-pressure compressed air lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2508\" data-start=\"2456\"\u003e\n\u003cp data-end=\"2508\" data-start=\"2458\"\u003eActuators, regulators, and control air diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2641\" data-start=\"2510\"\u003eThey align with typical pneumatic operating pressures and provide useful resolution for troubleshooting and performance evaluation.\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003e\u003cstrong\u003e100 PSI and 150 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003eThese models are intended for:\u003c\/p\u003e\n\u003cul data-end=\"2842\" data-start=\"2707\"\u003e\n\u003cli data-end=\"2742\" data-start=\"2707\"\u003e\n\u003cp data-end=\"2742\" data-start=\"2709\"\u003eIndustrial compressed air systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2781\" data-start=\"2743\"\u003e\n\u003cp data-end=\"2781\" data-start=\"2745\"\u003eEquipment supply pressure monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2842\" data-start=\"2782\"\u003e\n\u003cp data-end=\"2842\" data-start=\"2784\"\u003eCompressor, regulator, and distribution system diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2915\" data-start=\"2844\"\u003eThey are ideal for plant air systems operating in the 60–150 PSI range.\u003c\/p\u003e\n\u003chr data-end=\"2920\" data-start=\"2917\"\u003e\n\u003ch3 data-end=\"2967\" data-start=\"2922\"\u003eTemperature and Optional Humidity Context\u003c\/h3\u003e\n\u003cp data-end=\"3311\" data-start=\"2969\"\u003eIn addition to pressure, the SmartReader Plus 4 includes an internal ambient temperature sensor and supports an optional remote temperature and humidity probe. This allows pressure data to be viewed in the context of environmental conditions, which can be helpful when diagnosing air system behavior influenced by temperature or moisture.\u003c\/p\u003e\n\u003chr data-end=\"3316\" data-start=\"3313\"\u003e\n\u003ch3 data-end=\"3360\" data-start=\"3318\"\u003eLow-Pressure Differential Applications\u003c\/h3\u003e\n\u003cp data-end=\"3636\" data-start=\"3362\"\u003eFor applications involving very small pressure differences or true differential pressure measurement, such as building pressurization, room-to-room pressure relationships, or cleanroom and healthcare environments, a dedicated differential pressure logger is recommended. For this, ACR offers the \u003ca href=\"https:\/\/www.acrdatasolutions.com\/products\/smartreader-plus-4-lpd\"\u003eSmartReader Plus 4 LPD\u003c\/a\u003e, a dual-port low-pressure differential data logger designed specifically for these applications. The LPD model is available in pressure ranges from 0.5 inches to 10 inches of water column and uses separate high (+) and low (–) pressure ports to measure true differential pressure.\u003c\/p\u003e\n\u003cp data-end=\"4158\" data-start=\"3966\"\u003eIn these cases, the SmartReader Plus 4 LPD is the appropriate choice when the pressure difference itself, rather than a single-point pressure trend, is the primary measurement of interest.\u003c\/p\u003e","published_at":"2020-12-18T20:41:51-08:00","created_at":"2020-12-18T20:41:51-08:00","vendor":"ACR Systems","type":"","tags":["SmartReader Plus Family"],"price":133100,"price_min":133100,"price_max":133100,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":37839099986091,"title":"5G - 128 KB (01-0115)","option1":"5G - 128 KB (01-0115)","option2":null,"option3":null,"sku":"01-0115","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SmartReader Plus 4 – Single-Port Pressure Data Logger - 5G - 128 KB (01-0115)","public_title":"5G - 128 KB (01-0115)","options":["5G - 128 KB (01-0115)"],"price":133100,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":37839100018859,"title":"30A - 128 KB (01-0116)","option1":"30A - 128 KB (01-0116)","option2":null,"option3":null,"sku":"01-0116","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SmartReader Plus 4 – Single-Port Pressure Data Logger - 30A - 128 KB (01-0116)","public_title":"30A - 128 KB (01-0116)","options":["30A - 128 KB (01-0116)"],"price":133100,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":37839100051627,"title":"30G - 128 KB (01-0117)","option1":"30G - 128 KB (01-0117)","option2":null,"option3":null,"sku":"01-0117","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SmartReader Plus 4 – Single-Port Pressure Data Logger - 30G - 128 KB (01-0117)","public_title":"30G - 128 KB (01-0117)","options":["30G - 128 KB (01-0117)"],"price":133100,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":37839100084395,"title":"100A - 128 KB (01-0118)","option1":"100A - 128 KB (01-0118)","option2":null,"option3":null,"sku":"01-0118","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SmartReader Plus 4 – Single-Port Pressure Data Logger - 100A - 128 KB (01-0118)","public_title":"100A - 128 KB (01-0118)","options":["100A - 128 KB (01-0118)"],"price":133100,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":37839100117163,"title":"100G - 128 KB (01-0119)","option1":"100G - 128 KB (01-0119)","option2":null,"option3":null,"sku":"01-0119","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SmartReader Plus 4 – Single-Port Pressure Data Logger - 100G - 128 KB (01-0119)","public_title":"100G - 128 KB (01-0119)","options":["100G - 128 KB (01-0119)"],"price":133100,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":37839100149931,"title":"10 WC - 128 KB (01-0120)","option1":"10 WC - 128 KB (01-0120)","option2":null,"option3":null,"sku":"01-0120","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SmartReader Plus 4 – Single-Port Pressure Data Logger - 10 WC - 128 KB (01-0120)","public_title":"10 WC - 128 KB (01-0120)","options":["10 WC - 128 KB (01-0120)"],"price":133100,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":37839104377003,"title":"150G - 128 KB (01-0139)","option1":"150G - 128 KB (01-0139)","option2":null,"option3":null,"sku":"01-0139","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SmartReader Plus 4 – Single-Port Pressure Data Logger - 150G - 128 KB (01-0139)","public_title":"150G - 128 KB (01-0139)","options":["150G - 128 KB (01-0139)"],"price":133100,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/2558_400_300_0-1.jpg?v=1610171374","\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/3344_400_300.jpg?v=1610171374","\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/3342_400_300.jpg?v=1610171374"],"featured_image":"\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/2558_400_300_0-1.jpg?v=1610171374","options":["Click the Menu for More Models"],"media":[{"alt":null,"id":15547912257707,"position":1,"preview_image":{"aspect_ratio":1.313,"height":300,"width":394,"src":"\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/2558_400_300_0-1.jpg?v=1610171374"},"aspect_ratio":1.313,"height":300,"media_type":"image","src":"\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/2558_400_300_0-1.jpg?v=1610171374","width":394},{"alt":null,"id":15547914125483,"position":2,"preview_image":{"aspect_ratio":1.413,"height":283,"width":400,"src":"\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/3344_400_300.jpg?v=1610171374"},"aspect_ratio":1.413,"height":283,"media_type":"image","src":"\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/3344_400_300.jpg?v=1610171374","width":400},{"alt":null,"id":15547915468971,"position":3,"preview_image":{"aspect_ratio":3.053,"height":131,"width":400,"src":"\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/3342_400_300.jpg?v=1610171374"},"aspect_ratio":3.053,"height":131,"media_type":"image","src":"\/\/www.acrdatasolutions.com\/cdn\/shop\/products\/3342_400_300.jpg?v=1610171374","width":400}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3 data-end=\"501\" data-start=\"425\"\u003eDesigned for Pressure Trend Monitoring in Air and Compressed Air Systems\u003c\/h3\u003e\n\u003cp data-end=\"855\" data-start=\"503\"\u003eThe SmartReader Plus 4 is a single-port pressure data logger designed to capture how air and compressed air systems behave over time. Rather than providing a momentary snapshot, it records pressure trends—along with temperature and optional humidity—so technicians and engineers can diagnose issues that only appear under real operating conditions.\u003c\/p\u003e\n\u003cp data-end=\"1004\" data-start=\"857\"\u003eIt is well suited for applications where understanding changes, patterns, and system response is more important than a single absolute reading.\u003c\/p\u003e\n\u003chr data-end=\"1009\" data-start=\"1006\"\u003e\n\u003ch3 data-end=\"1057\" data-start=\"1011\"\u003eSingle-Port Pressure Measurement Explained\u003c\/h3\u003e\n\u003cp data-end=\"1393\" data-start=\"1059\"\u003eThe SmartReader Plus 4 uses a single pressure port, meaning it measures pressure relative to ambient atmospheric pressure (gauge or absolute, depending on the selected model). This approach is ideal for trend-based diagnostics, where the goal is to observe how pressure rises, falls, or fluctuates as system conditions change.\u003c\/p\u003e\n\u003cp data-end=\"1704\" data-start=\"1395\"\u003eBecause it measures pressure at a single point, the SmartReader Plus 4 does not directly measure true differential pressure between two locations. Instead, it provides valuable insight into system behavior by showing how pressure at a given point responds over time to loading, airflow changes, or demand.\u003c\/p\u003e\n\u003chr data-end=\"1709\" data-start=\"1706\"\u003e\n\u003ch3 data-end=\"1762\" data-start=\"1711\"\u003ePressure Range Options and Typical Applications\u003c\/h3\u003e\n\u003cp data-end=\"1882\" data-start=\"1764\"\u003eThe SmartReader Plus 4 is available in multiple pressure ranges to suit different air and compressed air applications.\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003e\u003cstrong\u003e0–10 inches water column (inWC)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2003\" data-start=\"1884\"\u003eThis range is best suited for airflow-related pressure measurements, such as:\u003c\/p\u003e\n\u003cul data-end=\"2173\" data-start=\"2004\"\u003e\n\u003cli data-end=\"2046\" data-start=\"2004\"\u003e\n\u003cp data-end=\"2046\" data-start=\"2006\"\u003ePressure drop trends across HVAC filters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2086\" data-start=\"2047\"\u003e\n\u003cp data-end=\"2086\" data-start=\"2049\"\u003eCoil and heat exchanger pressure drop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2128\" data-start=\"2087\"\u003e\n\u003cp data-end=\"2128\" data-start=\"2089\"\u003eDuct static pressure (supply or return)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2173\" data-start=\"2129\"\u003e\n\u003cp data-end=\"2173\" data-start=\"2131\"\u003eFan and air system performance diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2326\" data-start=\"2175\"\u003eThis range is intended for airflow-induced pressures and system diagnostics—not for pneumatic control air or fine building pressurization measurements.\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003e\u003cstrong\u003e5 PSI and 30 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2391\" data-start=\"2328\"\u003eThese models are well suited for:\u003c\/p\u003e\n\u003cul data-end=\"2508\" data-start=\"2392\"\u003e\n\u003cli data-end=\"2419\" data-start=\"2392\"\u003e\n\u003cp data-end=\"2419\" data-start=\"2394\"\u003ePneumatic control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2455\" data-start=\"2420\"\u003e\n\u003cp data-end=\"2455\" data-start=\"2422\"\u003eLow-pressure compressed air lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2508\" data-start=\"2456\"\u003e\n\u003cp data-end=\"2508\" data-start=\"2458\"\u003eActuators, regulators, and control air diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2641\" data-start=\"2510\"\u003eThey align with typical pneumatic operating pressures and provide useful resolution for troubleshooting and performance evaluation.\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003e\u003cstrong\u003e100 PSI and 150 PSI models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2706\" data-start=\"2643\"\u003eThese models are intended for:\u003c\/p\u003e\n\u003cul data-end=\"2842\" data-start=\"2707\"\u003e\n\u003cli data-end=\"2742\" data-start=\"2707\"\u003e\n\u003cp data-end=\"2742\" data-start=\"2709\"\u003eIndustrial compressed air systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2781\" data-start=\"2743\"\u003e\n\u003cp data-end=\"2781\" data-start=\"2745\"\u003eEquipment supply pressure monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2842\" data-start=\"2782\"\u003e\n\u003cp data-end=\"2842\" data-start=\"2784\"\u003eCompressor, regulator, and distribution system diagnostics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2915\" data-start=\"2844\"\u003eThey are ideal for plant air systems operating in the 60–150 PSI range.\u003c\/p\u003e\n\u003chr data-end=\"2920\" data-start=\"2917\"\u003e\n\u003ch3 data-end=\"2967\" data-start=\"2922\"\u003eTemperature and Optional Humidity Context\u003c\/h3\u003e\n\u003cp data-end=\"3311\" data-start=\"2969\"\u003eIn addition to pressure, the SmartReader Plus 4 includes an internal ambient temperature sensor and supports an optional remote temperature and humidity probe. This allows pressure data to be viewed in the context of environmental conditions, which can be helpful when diagnosing air system behavior influenced by temperature or moisture.\u003c\/p\u003e\n\u003chr data-end=\"3316\" data-start=\"3313\"\u003e\n\u003ch3 data-end=\"3360\" data-start=\"3318\"\u003eLow-Pressure Differential Applications\u003c\/h3\u003e\n\u003cp data-end=\"3636\" data-start=\"3362\"\u003eFor applications involving very small pressure differences or true differential pressure measurement, such as building pressurization, room-to-room pressure relationships, or cleanroom and healthcare environments, a dedicated differential pressure logger is recommended. For this, ACR offers the \u003ca href=\"https:\/\/www.acrdatasolutions.com\/products\/smartreader-plus-4-lpd\"\u003eSmartReader Plus 4 LPD\u003c\/a\u003e, a dual-port low-pressure differential data logger designed specifically for these applications. The LPD model is available in pressure ranges from 0.5 inches to 10 inches of water column and uses separate high (+) and low (–) pressure ports to measure true differential pressure.\u003c\/p\u003e\n\u003cp data-end=\"4158\" data-start=\"3966\"\u003eIn these cases, the SmartReader Plus 4 LPD is the appropriate choice when the pressure difference itself, rather than a single-point pressure trend, is the primary measurement of interest.\u003c\/p\u003e"}