WA-1

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WA-1

HygroMer AW-1 - The perfect Sensor for water activity applications

 

 

WA-1 Dimension

 

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Innovation in Humidity Measurement

•Best long-term stability

•Robust mechanical construction

•Response time < 15 s

•0...100 %RH

•-50...170 °C

•PTFE surface protection

O2

 

 

 

Further Info

Support

Contact

 

 

 

 

 

Functions

Description

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Characteristic polynomial

 

5th degree polynomial

Y = A0 + A1*x + A2*x2 + A3*x3 + A4*x4 + A5*x5

 

A0 = 2.00000E+02

A1 = 7.12550E-01

A2 = -1.19025E-03

A3 = 2.01789E-04

A4 = -1.59209E-06

A5 = 4.65615E-09

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Specifications

 

Capacity:

220 pF ±50 pF

Humidity operating range:

0…100 %RH

Temperature operating range:

-50...170 °C

Accuracy at 23 °C:

±1.0 %RH

Hysteresis (4 hours each at

10 %RH - 90 %RH - 10 %RH):

< 0.5 %RH

Response time τ63:

<15 s (at 23 °C and 1 m/s)

Long-term stability:

<1 %RH / year

Uncompensated

temperature deviation:

-0.15 %RH/°C

(30…90 %RH)

Frequency range

(without DC components):

5...50 kHz

Max. Voltage:

±12 VDC

 

 

The shown data are guide values. The resistance of the sensor strongly depends on the temperature and humidity conditions as well as on

exposure duration to the pollutant. Allowed fault caused from the pollutant: ±2 %RH (10…90 %RH).

 

 

 

Pollutant

Formula

Max.Workplace Allowed Concentration

 

Allowed Concentration

Continuous Operation

(ppm)

(mg/m3)

(ppm)

(mg/m3)

Acetic acid

CH3COOH

10

25

800

2000

Acetone

CH3COCH3

1000

2400

3300

8000

Ammonia

NH3

25

18

5500

4000

2-Butanone (MEK)

C2H5COCH3

200

590

3300

8000

Chlorine

Cl2

0.5

1.5

0.7

2

Ethanol

C2H5OH

1000

1900

3500

6000

Ethyl acetate

CH3COOC2H5

400

1400

4000

15000

Ethylene glycol

HOCH2CH2OH

100

260

1200

3000

Ethylene oxide

C2H4O

3

3

Formaldehyde

HCHO

1

1.2

2400

3000

Hydrochloric acid

HCl

5

7

300

500

Hydrogen sulfide

H2S

10

15

350

500

Isopropanol

(CH3)2CHOH

400

980

4800

12000

Methanol

CH3OH

200

260

3500

6000

Nitrogen oxides

NOx

5

9

5

9

Ozone

O3

0.1

0.2

0.5

1

Petrol

300

1200

150000

Sulfur dioxide

SO2

5

13

5

13

Toluene / Xylene

C6H5CH3

100

380

1300

5000

 

 

 

The data in this documentation result from experience and testing. Depending upon site conditions (temperature, dampness, pollutants etc.)

the values can differ. A warranty claim cannot be derived from it.