GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

NETWORK OUTSIDE HUMIDITY/TEMPERATURE SENSOR

HNOS SERIES

PRODUCT DESCRIPTION

The outside air network humidity/temperature

sensor uses a highly accurate and reliable

Thermoset Polymer based capacitance humidity

sensor and temperature sensor, that is field

replaceable, to monitor humidity and temperature

levels and transmit values via BACnet® or Modbus

communication to a building automation system.

A hinged, gasketed weatherproof Polycarbonate

enclosure with sensor hub provides ease of

installation and protection from the elements.

TYPICAL INSTALLATION

For complete installation and wiring details,

please refer to the product installation

instructions.

The outside sensor should be mounted on an

outside North facing wall, under the eaves which

will provide protection from direct sunlight and

wind.

The outside sensor 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.

RELATIVE HUMIDITY

Accuracy: ±2, 3, or 5 %RH (5 to 95 %RH)

Range: 0 to 100 %RH

Resolution: 0.01 %RH

Hysteresis: ±0.8 %RH @ 25°C (77°F)

Response Time: 8 seconds typical

Stability: <0.25 %RH/year

TEMPERATURE SENSOR

Sensor Accuracy: ±0.2°C (±0.4°F) @ 0 to 70°C (32 to 158°F)

Probe Sensing Range: -40 to 50°C (-40 to 122°F), 5 to 95 %RH non-

condensing

Resolution: 0.01°C/°F

Response Time: 2 seconds

Stability: <0.03°C/year

NETWORK COMMUNICATION

Hardware: MS/TP, 2-wire RS-485

Software: BACnet® or Modbus

Baud Rate: 9600, 19200, 38400, 57600, 76800, or 115200

Address Range: BACnet® - 0 to 127

Modbus - 1 to 255

OPTIONAL RELAY

Contacts: 0.5 A @ 125 Vac / 1 A @ 24 Vdc

Setpoint: Relative Humidity - 1 to 90 %RH or

Temperature - 5 to 40°C (40 to 100°F)

POWER SUPPLY

24 Vac/dc ±10% typical, 28 Vac/dc maximum

CONSUMPTION

22 mA @ 24 Vdc, 70 mA @ 24 Vac

OPERATING ENVIRONMENT

-40 to 60°C (-40 to 140°F)

PROBE MATERIAL

PVC sensor hub

WIRING CONNECTION

Screw terminal block (14 to 22 AWG)

ENCLOSURE

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

E: Same as A, with cable gland fitting

DIMENSIONS

82.5mm W x 76.2mm H x 52.0mm D (3.25” x 3.0” x 2.05”)

COUNTRY OF ORIGIN

Canada

SPECIFICATIONS

CABLE GLAND FITTING

OPTIONAL ACCESSORIES - INCLUDED WITH E ENCLOSURE OPTION

North

OSA Temperature

Sensor

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