Testo Logger Specs

Brochure & full data sheets for Testo 175 & Testo 177 (.pdf 680KB)

Testo 175

Testo 175-H2 Technical data

2 channel humidity/temperature logger with internal sensors

Parameter:  Humidity/ Temperature
Sensor:  Humidity sensor / NTC (internal)
No. of channels:  2 channels (internal %RH; °C)
Measuring range:  0 to 100 %RH, -20 °C to +70 °C
Resolution:  0.1 %RH / 0.1 °C
Accuracy/System:  ±3 %RH ±0.5 °C ±1 digit
Memory:  16,000 readings
Application temp.:  -20 °C to +70 °C
Storage temp.:  -40 °C to +85 °C
Battery type:  Lithium (1/2 AA)
Weight:  85 g

Testo 177

Testo 177-H1  Technical data

4 channel humidity/temperature logger with internal sensors and external probe socket

Parameters:  Humidity/Temperature/ Dew point
Sensors:  Humidity sensor/ NTC (internal) NTC (external)
No. of channels:   4 channels (3 x int. %RH; °C, °C td)  (1 x external °C)
Measuring range:  0...100 %RH
   -20 to +70 °C (internal)
   -40 to +70 °C td
   -40 to +120 °C (external)
Resolution: 0.1%RH/0.1 °C/0.1 °C td
Accuracy/System:  ± 2%RH, ± 0.5 °C; Internal: ±1 digit
Accuracy/Instr.:  ± 0.2 °C; -25 to +70 °C, ± 0.4 °C; rem. range
External: ±1 digit
Memory: 48,000 readings
Application temp.: -20 °C to +70 °C
Storage temp.: -40 °C to +85 °C
Battery type: Lithium (1AA)
Weight: 130 g
Protection class: IP 54