TECHNICAL DATA

Humirel Sensor Device Data / HPC009-20 RevA December 2000

1

PRELIMINARY DATA SHEET

RELATIVE HUMIDITY MODULE

HM1520

Based on the rugged HS1101 humidity sensor, HM1520 is a dedicated humidity transducer

designed for measurements at low humidity. Direct measurement of dew point or water

concentration can be easily obtained in really cost effective conditions. Direct interface with a

micro-controller is made possible with the module’s linear voltage output.

Main features

•

Tubular form for through wall mounting.

•

Not affected by water condensation

•

Full interchangeability.

•

Typical 1 to 1.6 Volt DC output for 0 to 20% RH at 5 V DC supply.

•

Calibrated, linear voltage for easy electronic interface.

•

Controlled temperature dependency

•

Ratiometric to voltage supply

Humidity sensor specific features

•

No affected by long period at low humidity values.

•

Patented solid polymer structure.

•

High resistance to chemicals.

Maximum ratings

Ratings

Symbol

Value

Unit

Supply Voltage (Peak)

Vs

12

Vdc

Operating Range (see graph below)

RH

0 to 100

% RH

Operating Range (Dew Point)

Td

-50 to 30

°C

Operating Range in Temperature

Ta

-30 to 60

°C

Accuracy of HM1520 when used from 1 to 95% RH

-10,0

-8,0

-6,0

-4,0

-2,0

0,0

2,0

4,0

6,0

8,0

10,0

0

10

20

30

40

50

60

70

80

90

100

Relative Humidity in % Rh

Optimized

accuracy

range

+/- 3 to 5% RH

accuracy range

+/- 5 to 10% RH

accuracy range