JR-1001 | Low-cost, intrinsically safe temperature data logger. | ACR Systems
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Low-cost, intrinsically safe temperature data logger.

Single channel, 8 bit, 32 KB data logger (One ambient temperature channel). UL Intrinsically safe.


The JR-1001 data logger is an Intrinsically Safe, simple and easy-to-use single- channel data logger. It is ideal for quick and accurate temperature recordings in a variety of applications.

Our JR Series is a step up from the SmartButton and economically offers a fuller feature set, more memory, longer battery life, and an Intrinsically Safe option for hazardous, explosive environments.

Key Features

  • Widest temperature range (-40°C to 85°C or -40°F  to 185°F)
  • 32KB memory for up to 244,800 readings with data compression
  • Lightweight, compact design with polyurethane encapsulation to protect electronics
  • Industry-leading 5-year battery life
  • 3-year warranty


Size 33 x 43 x 20 mm (1.3" x 1.7" x 0.75")
Weight 35 grams (1.23 ounces)
Case Material Polyurethane
Operating Limits -40 to 85 °C (-40 to 185 °F)
Clock Accuracy +/-2 seconds per day
Battery 3.6 volt Lithium, 0.45 Amp-Hour
Battery Life 5 years (under normal use)
Memory Size 32 KB (up to 244,800 readings when data compression selected)
PC Requirements Windows PC with a least 256MB RAM, 250MB of hard drive space and one free serial or USB port depending on interface
Software Requirements TrendReader® Express or TrendReader® (compatible with Windows 7, Windows 8 & Windows 10)
Sampling Interval User selectable from 8 seconds to 34 minutes
Sampling Method Continuous, Stop when Full
Logger Resolution 0.4°C @ 25°C (0.7°F @ 77°F)
Memory Size 32 KB (up to 244,800 readings when data compression selected)
Temperature Sensor Type NTC Thermistor 10,000 ohms @ 25°C (77°F)
Temperature Sensor Range -40 to 85°C (-40 to 185°F)
Temperature Sensor Accuracy +/- 0.2°C @ 25°C (+/- 0.3°F @ 77°F)
Approval UL-C/US Intrinsically Safe for use in:
Class I, Division 1, Groups C and D
Class II, Division 1, Groups E, F and G
Class III, Division 1, Hazardous Locations T4