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ACR Systems Relative Humidity Dataloggers

Model Channels Measurement Range Resolution Memory # of Readings Sampling Rate Secondary Channels
TRH-1000 2 -40 to 70°C
(-40 to 158°F)
0 - 100% RH
8 Bit 64 KB 65,280 8 sec to
34 min
N/A
TRH-1000-SP 2 -40 to 70°C
(-40 to 158°F)
0 - 100% RH
8 Bit 64 KB 65,280 8 sec to
34 min
N/A
SmartReader 2 4 -40 to 70°C
(-40 to 158°F)
0 - 95% RH
8 Bit 32 KB 32,767 8 sec to
120 hrs
Temperature
SmartReaderPlus 2 4 -40 to 70°C
(-40 to 158°F)
0 - 95% RH
12 Bit 128 KB 87,000 .04 sec to
8 hrs
Temperature
IAQ Logger 5 -40 to 70°C
(-40 to 158°F)
0 - 95% RH
8 Bit 32 KB 32,767 8 sec to
120 hrs
Temperature
and CO2
Conservation Logger 4 -40 to 70°C
(-40 to 158°F)
0 - 95% RH
12 Bit 128 KB 87,000 .04 sec to
8 hrs
Temperature
and 0-5V
Process Signals

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