Measurement Guide

Compare our wide selection of data loggers

ACR Systems Data Loggers are available to support a wide variety of measurements. Use the following table to compare the capabilities of our data loggers and determine the best product for your requirements.

Data LoggerChannelsMeasurement RangeResolutionMax. Readings
Temperature: Thermistor
SmartReader Plus 12-60 to 255 ºC (-76 to 491 ºF)121048000
SmartReader Plus 88-60 to 255 ºC (-76 to 491 ºF)121048000
OWL 1001-40 to 70 ºC (-40 to 158 ºF)832767
OWL 2001-40 to 70 ºC (-40 to 158 ºF)832767
JR-10001-40 to 85 ºC (-40 to 185 ºF)732767
JR-10011-40 to 85 ºC (-40 to 185 ºF)832767
SmartButton1-40 to 85 ºC (-40 to 185 ºF)82048
Temperature: Thermocouple
SmartReader Plus 53E, J, K, S, T thermocouple ranges1287000
SmartReader Plus 68E, J, K, S, T thermocouple ranges121048000
Temperature: RTD
SmartReader Plus 104-230 to 300 ºC (-385 to 572 ºF)1287000
Temperature: Waterproof
Nautilus851-40 to 85 ºC (-40 to 185 ºF)4244800
Nautilus135110 to 135 ºC (50 to 275 ºF)8244800
Relative Humidity
SmartReader Plus 24-40 to 70 ºC (-40 to 158 ºF), 0 to 95% RH1287000
TRH Logger2-40 to 70 ºC (-40 to 158 ºF) & 0-100% RH865000
Electrical: Current & Voltage
SmartReader Plus 385 to 1000 A, 120 Vac or 480 Vac12104800
PowerChekN/AN/AN/AN/A
Electrical: Power Quality
PowerWatch 120V1100-120 Volt, Single PhaseN/A4000
PowerWatch 220/240V1220-240 Volt, Single PhaseN/A4000
Electrical: Pulse & Switch Contact
SmartReader Plus 944095 pulse/sample rate max.1287000
Pressure
SmartReader Plus 440 to 5, 30, 100, 150 psi & 10" WC1287000
SmartReader Plus 4 LPD2±0.5, 1, 2, 5, 10" WC1221500
Process Signal
SmartReader Plus 782.5v, 5v, 10v, 25mA, 200mV12104800
OWL 40010-38.4 Vdc max.832767
OWL 50010-24 mA dc832767
Carbon Dioxide & Other Gases
IAQ Logger5-40 to 70 ºC (-40 to 158 ºF) & 0-95% RH; 0-4000 ppm CO2832767