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2

1. APPLICATION 

 Thermo-Hygrometer 

PCE-WM 1 is an electronic microprocessor based device for 

measuring relative air humidity (%RH), temperature (°C), absolute humidity (g/m3) and dew 
point temperature (°C). It is equipped with TP-1 Electrode which enables the user to obtain 
temperature readings for various surfaces (e.g. steel constructions). Absolute humidity and 
dew point temperature are calculated by the microprocessor, which performs linearization 
and mathematical computations. 
 

The device is widely used in industry and laboratories, it is extremely user friendly. It is 

supplied together with other standard equipment in a shock proof case.  
 

2. TECHNICAL 

DATA 

 

RELATIVE HUMIDITY (%RH) 
 

Range 

 

 

10 % - 95 % 

Sensor type 

 

EE HC 200 (Austria) 

Response time T

90

 15 

Accuracy   

 

±2 % (± 3 %) 

 

TEMPERATURE (°C) 
 

Range 

 

 

- 20°C - 80°C 

Sensor type 

 

EE KF 6645 (Austria) 

Response time T

90

 15 

Accuracy 

  ± 

0.5°C 

Resolution  0.1 

°C 

 
SURFACE TEMPERATURE (°C) 
 

Range 

 

 

- 20°C - 80°C 

Sensor type 

 

EE KF 6645 (Austria) 

Response time T

90

 240 

Accuracy 

  ± 

0.5°C 

Resolution  0.1 

°C 

Electrode fastening 

magnetic grip 

 
ABSOLUTE HUMIDITY (g/m

3

Absolute humidity is calculated by the microprocessor using formulas commonly known in 
thermodynamics. 

 
DEW POINT TEMPERATURE (°C) 

Dew point temperature is determined by the microprocessor using a two dimensional 
(humidity and temperature) table. 

 
REMAINING TECHNICAL DATA 
 
 

Display 

  LCD 

3

1

/

2

 digits 

 Nonlinearity 

correction 

yes 

 

Power 

   9V, 

battery 

6F22 

 

Auto power off   

 

yes, after 4 min. 

 Size 
 

 

 instrument 

 165*80*33 

mm 

  case 

  270*180*55 

mm 

 
 

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