GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

OUTSIDE HUMIDITY TRANSMITTER

HSOS SERIES

PRODUCT DESCRIPTION

The outside humidity transmitter uses a highly

accurate and reliable Thermoset Polymer based

capacitance humidity sensor and state-of-

the-art digital linearization and temperature

compensated circuitry to monitor humidity levels.

The sensor is encapsulated in a field replaceable

sensor hub for protection from the elements. A

weatherproof enclosure that provides ease of

installation is provided. An optional integrated

temperature sensor is available.

TYPICAL INSTALLATION

For complete installation and wiring details,

please refer to the product installation

instructions.

The outside transmitter should be mounted on an

outside North facing wall, under the eaves which

will provide protection from direct sunlight and

wind.

The outside transmitter can be mounted directly

to buildings wall face using the provided

mounting holes. There is a 0.86” hole for conduit

connection of the back of the enclosure.

SENSOR TYPE

Thermoset polymer based capacitive

SENSOR ACCURACY

±2, 3, or 5 %RH (5 to 95 %RH)

MEASUREMENT RANGE

0 to 100 %RH

RESOLUTION

±0.01 %RH

HYSTERESIS

±0.8 %RH @ 25°C (77°F)

RESPONSE TIME

8 seconds

STABILITY

<0.25% RH/year

AMBIENT OPERATING RANGE

-40 to 60°C (-40 to 140°F)

POWER SUPPLY

24 Vac/dc ~ ±10% typical

CONSUMPTION

22 mA maximum @24Vdc, 70mA @24Vac

OUTPUT SIGNAL

4-20 mA current loop, 0-5 Vdc, 0-10 Vdc, or 0-1 Vdc (field selectable)

OUTPUT DRIVE @ 24 VDC

Current: 550Ω max

Voltage: 10,000Ω min

OPTIONAL TEMPERATURE SENSOR

Feed Through Sensor: Various RTD’s and thermistors available as 2 wire

resistance output

ENCLOSURE

A: Polycarbonate, UL94-V0, IP65 (NEMA 4X)

E: Same as A, with cable gland fitting

TERMINATION

Screw terminal block (14 to 22 AWG)

COUNTRY OF ORIGIN

Canada

SPECIFICATIONS

CABLE GLAND FITTING

OPTIONAL ACCESSORIES - INCLUDED WITH E ENCLOSURE OPTION

82.5 mm

3.25”

69.8 mm

2.75”

52.0 mm

2.05”

76.2 mm

3.00”

25.4 mm

1.00”

25.4 mm

1.00”

0.5” NPT

North

OSA Temperature

Sensor