SmartReader Plus 2 | 4-channel relative humidity & temperature data logger | ACR Systems
About ACR Systems Products
Hardest Working Data Loggers in the Industry - ACR
ACR Data Loggers
ACR Specialty Products
ACR Software
ACR Accessories
SmartReader Plus 2

Select currency

4-channel relative humidity & temperature data logger
SmartReader Plus 2 - 128 KB (01-0113)

Four channel, 12 bit, 128 KB data logger (One ambient temperature and RH channel and one external temperature and RH channel).


SmartReader Plus 2 is a self-contained data logger that can monitor and record temperature and relative humidity - right out of the box. The on-board RH sensor is temperature compensated, permitting reliable, worry-free RH readings. For remote sensing of temperature and RH, simply attach ACR's temperature/RH probe, or for remote temperature sensing, attach ACR's thermistor probe. Compativle with ACR's TrendReader® software


RH Sensor Type Capacitive thin polymer film
RH Sensor Range 0 to 95% RH (non-condensing)
RH Sensor Accuracy +/- 3% RH from 10 to 90% RH (-20 to 40ºC [-4 to 104ºF])
RH Sensor Resolution Better than 0.04% RH between 25 and 60% RH at 25ºC (77ºF)
Response Time Adequate ventilation increases the response time which is approximately 5 minutes in still air.
Environmental Conditions Like all relative humidity sensors, when exposed to contaminants and/or extreme environmental conditions accuracy degradation could result. For maximum long-term stability, sensor should not be exposed or subjected to organic solvents, corrosive agents (acids, SO2, H2SO4, Cl2, HCl, H2S, etc.), and strong bases (compounds with PH greater than 7). Dust settling on the sensor surface will not affect sensor performance except possibly to decrease the speed of response.