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.

Temperature: Thermistor
Data Logger	Channels	Measurement Range	Resolution	Max. Readings
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

STAY INFORMED