Hardest Working Data Loggers in the Industry - ACR
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 Logger Channels Measurement Range Resolution Max. Readings
Temperature: Thermistor
SmartReader Plus 1 2 -60 to 255 ºC (-76 to 491 ºF) 12 1048000
SmartReader Plus 8 8 -60 to 255 ºC (-76 to 491 ºF) 12 1048000
OWL 100 1 -40 to 70 ºC (-40 to 158 ºF) 8 32767
OWL 200 1 -40 to 70 ºC (-40 to 158 ºF) 8 32767
JR-1000 1 -40 to 85 ºC (-40 to 185 ºF) 7 32767
JR-1001 1 -40 to 85 ºC (-40 to 185 ºF) 8 32767
SmartButton 1 -40 to 85 ºC (-40 to 185 ºF) 8 2048
Temperature: Thermocouple
SmartReader Plus 5 3 E, J, K, S, T thermocouple ranges 12 87000
SmartReader Plus 6 8 E, J, K, S, T thermocouple ranges 12 1048000
Temperature: RTD
SmartReader Plus 10 4 -230 to 300 ºC (-385 to 572 ºF) 12 87000
Temperature: Waterproof
Nautilus85 1 -40 to 85 ºC (-40 to 185 ºF) 4 244800
Nautilus135 1 10 to 135 ºC (50 to 275 ºF) 8 244800
Relative Humidity
SmartReader Plus 2 4 -40 to 70 ºC (-40 to 158 ºF), 0 to 95% RH 12 87000
TRH Logger 2 -40 to 70 ºC (-40 to 158 ºF) & 0-100% RH 8 65000
Electrical: Current & Voltage
SmartReader Plus 3 8 5 to 1000 A, 120 Vac or 480 Vac 12 104800
PowerChek N/A N/A N/A N/A
Electrical: Power Quality
PowerWatch 120V 1 100-120 Volt, Single Phase N/A 4000
PowerWatch 220/240V 1 220-240 Volt, Single Phase N/A 4000
Electrical: Pulse & Switch Contact
SmartReader Plus 9 4 4095 pulse/sample rate max. 12 87000
Pressure
SmartReader Plus 4 4 0 to 5, 30, 100, 150 psi & 10" WC 12 87000
SmartReader Plus 4 LPD 2 ±0.5, 1, 2, 5, 10" WC 12 21500
Process Signal
SmartReader Plus 7 8 2.5v, 5v, 10v, 25mA, 200mV 12 104800
OWL 400 1 0-38.4 Vdc max. 8 32767
OWL 500 1 0-24 mA dc 8 32767
Carbon Dioxide & Other Gases
IAQ Logger 5 -40 to 70 ºC (-40 to 158 ºF) & 0-95% RH; 0-4000 ppm CO2 8 32767

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