GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

HUMIDITY / TEMPERATURE TRANSMITTER C/W SETPOINT ADJUSTMENTS

SPC SERIES

PRODUCT DESCRIPTION

The SPC Temperature/Humidity 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 senor to monitor relative

humidity and a curve-matched thermistor to measure

temperature.

Two setpoint controls are also available for temperature

and humidity adjustment. The device may also include

an occupancy override button. Both measurements and

setpoint signals are available on separate outputs as linear

4-20 mA, 0-5 or 0-10 Vdc signals.

Several configurations of the device are available with

one to four outputs as required. An LCD is included for

configuration and local indication of all parameters. Several

operating parameters can be programmed using a keypad

for specific applications including four temperature ranges

and °C / °F display.

TYPICAL INSTALLATION

For complete installation and wiring details, please

refer to the product installation instructions.

The SPC series can be mounted directly to a single gang

electrical box or directly to a wall. Insulation 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.

POWER SUPPLY

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

CONSUMPTION

20 mA + (20 mA x number of outputs) max @ 24 Vdc

INPUT VOLTAGE EFFECT

Negligible over specified operating range

PROTECTION CIRCUITRY

Reverse voltage protected and output limited

OUTPUT SIGNALS

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

OUTPUT RESOLUTION

10 bit for all signals

OUTPUT DRIVE CAPABILITY

Current: 550 Ω max

Voltage: 10,000 Ω min

PROGRAMMING AND SELECTION

Via internal pushbuttons and on-screen menu

AMBIENT OPERATING RANGE

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

WIRING CONDITIONS

Screw terminal block (14 to 22 AWG)

ENCLOSURE

Ratings: White ABS - IP30 (NEMA 1)

Dimensions: 84mm W x 117mm H x 29mm D (3.3” x 4.6” x 1.15”)

LCD DISPLAY

Size: 38.1mm x 16.5mm (1.5” x 0.65”)

Digit Height: 11.43mm (0.45”)

Symbols: °C, °F, %RH, OCC

Backlight: Enable or disable via menu

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

TEMPERATURE SETPOINT

Midpoint: 18 to 27°C (65 to 80°F) programmable

Range: ±2 to ±10°C (±5 to ±20°F) of the midpoint, programmable

Resolution: 0.5 or 1.0°C and 1.0 or 2°F programmable

HUMIDITY

Sensor: Thermoset polymer based capacitive

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

Range: 0 to 100 %RH

Hysteresis: ±0.8 %RH @ 25

°C (77°F)

Response Time: 8 seconds typical

Offset: ±20 %RH programmable

Stability: <0.25 %RH/year

HUMIDITY SETPOINT

Midpoint: 20 to 70 %RH programmable

Range: ±5, ±10 or ±20 %RH of the midpoint, programmable

Resolution: 1 %RH

OPTIONAL OCCUPIED INPUT

(INCLUDED WITH OVERRIDE OPTION)

Type: Digital input, 0-5 Vdc standard, active low

Logic: Active low or active high, programmable

Action: Causes “OCC” segment to light on LCD

COUNTRY OF ORIGIN

Canada

SPECIFICATIONS

58mm

2.3”

82.6mm

3.25”

29mm

1.15”

119mm

4.7”

84mm

3.3”