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3 hmp46 probe, 1 relative humidity, 2 temperature – Vaisala HMP46 User Manual

Page 47: Hmp46 probe

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HMI41 AND PROBES

M210316EN-A

Operating Manual

43

11.3

HMP46 probe

11.3.1

Relative humidity

Measurement range

0...100 %RH non-condensing

Accuracy (at +20 °C); maximum achievable accuracy

when calibrated against high quality,
certified humidity standards

±

1 %RH (0...90 %RH)

±

2 %RH (90...100 %RH)

when calibrated against
salt solutions (ASTM E104-85):

±

2 %RH (0...90 %RH)

±

3 %RH (90...100 %RH)

Temperature dependence:

-40

0

40

160

80

120

2

1

0

-1

-2

-20

20

60

100

140

180

1.5

0.5

-0.5

-1.5

error %RH

T/°C

for temporary
use only

Typical long-term stability

better than 1 %RH/ year

Response time (90%) at 20

°

C

in still air with sintered filter

15 s

Humidity sensor

HUMICAP

®

180

11.3.2

Temperature

Measurement range (sensor head)

-40...+100

°

C (temporarily +180

°

C)

Temperature sensor

Pt100 IEC 751 1/3 Class B

Accuracy at +20

°

C

±

0.2

°

C

Accuracy over the whole temperature range:

°C

-40 -20 0 20 40 60 80 100 120 140 160

T/°C

0.6

0.4

0.2

-0.2

-0.4

-0.6

0

180

Temperature dependence
of electronics

0.005

°

C/

°

C

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