GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

OUTSIDE HUMIDITY TRANSMITTER

HSOB 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 12.7 mm (0.5”) diameter 304

S/S probe and is field replaceable. A 60 micron

HDPE filter protects the sensor for contaminants

and a sun and windshield 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, 28 Vac/dc maximum

CONSUMPTION

22 mA @ 24 Vdc, 70mA @24Vac

OUTPUT SIGNAL

4-20 mA / 0-1 Vdc, 0-5 Vdc, or 0-10 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

PROBE MATERIAL

304 series stainless steel with porous filter

PROBE DIAMETER

12.7 mm (0.5”)

SUN AND WINDSHIELD

White polycarbonate, vented

Dimensions: 132mm x 38mm (5.19” x 1.5”)

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

132 mm

5.19"

82.5 mm

3.25"

69.8 mm

2.75"

92 mm

3.62"

38mm

1.5"

52.0 mm

2.05"

76.2 mm

3.00"

0.5” NPT

North

OSA Humidity

Transmitter