GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

ROOM HUMIDITY / TEMPERATURE TRANSMITTER

HTRC SERIES

TYPICAL INSTALLATION

For complete installation and wiring details, please

refer to the product installation instructions.

The HTRC series can be mounted directly to a single

gang electrical box or directly to a wall. Insulating foam is

adhered to the back of the enclosure to provide a thermal

barrier from wall temperatures.

A terminal block connection is provided for connection to

the Building Automation System.

PRODUCT DESCRIPTION

The HTRC Humidity/Temperature transmitter

incorporates two sensors in one attractive

wall mount enclosure for the most efficient

environmental monitoring and control system. It

uses a field-proven RH sensor to monitor relative

humidity and a curve-matched thermistor to

measure temperature and provides two analog

outputs of either 4-20 mA, or 0-5 Vdc / 0-10 Vdc.

Additional options include an occupancy override

button, or LCD display.

TEMPERATURE

Sensor: Curve-matched thermistor

Accuracy: ±0.2°C (±0.4°F)

Range: 0 to 35°C (32 to 95°F) or 0 to 50°C (32 to 122°F), programmable

Offset: ±5.0°C programmable

Display Units: °C or °F programmable

Display Resolution: 0.1° < 100°, 1° > 100°

HUMIDITY

Sensor: Thermoset polymer based capacitive

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

Range: 0 to 100 %RH

Hysteresis: ±0.8 %RH @ 25

°C (77°F)

Response Time: 8 seconds

Offset: ±20 %RH, programmable

Stability: <0.25 %RH/year

POWER SUPPLY

24 Vac/dc ±10% (non-isolated half-wave rectified)

CONSUMPTION

60 mA max @ 24 Vdc

INPUT VOLTAGE EFFECT

Negligible over specified operating range

PROTECTION CIRCUITRY

Reverse voltage protected and output limited

OUTPUT SIGNAL

4-20 mA active (sourcing), 0-5 Vdc or 0-10 Vdc (specify when ordering)

OUTPUT RESOLUTION

10 bit for all signals

OUTPUT DRIVE @ 24 VDC

Current: 550 Ω maximum

Voltage: 10K Ω minimum

PROGRAMMING/SELECTION

Via internal push buttons and on-screen menu

OPERATING CONDITIONS

0 to 50°C (32 to 122°F), 0 to 95 %RH non-condensing

WIRING CONNECTIONS

Screw terminal block (14 to 22 AWG)

ENCLOSURE

White ABS - IP30 (NEMA 1)

84mm W x 119mm H x 29mm D (3.3” x 4.7” x 1.15”)

OPTIONAL LCD DISPLAY

Range: 00.0 to 99.9, 3 digit

Symbols: °C, °F %RH, OCC

Display Size: 38.1mm x 16.5mm (1.5” x 0.65”)

Digit Height: 11.43mm (0.45”)

Backlight: Enable/disable via menu

OPTIONAL OVERRIDE

Type: Front panel, momentary push button, 2 wire dry contact

Switch Ratings: N.O., SPST, 50 mA @ 12 Vdc

OPTIONAL OCCUPIED INPUT

(INCLUDED WITH OVERRIDE OPTION)

Type: Digital input, 0-5 Vdc or dry contact to common

Logic: Active low or active high, programmable

Action: Causes “OCC” segment to light in display

COUNTRY OF ORIGIN

Canada

SPECIFICATIONS

84mm

3.3”

58mm

2.3”

82.6mm

3.25”

29mm

1.15”

119mm

4.7”