GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

GLASS HIGH LIMIT THERMOSTAT

THGL SERIES

CABLE GLAND FITTING

THREAD ADAPTER 1/2” NPT TO M16

ACCESSORIES - INCLUDED WITH F STYLE ENCLOSURE

PRODUCT DESCRIPTION

The single point glass high limit thermostat

incorporates a precision thermistor temperature

sensor and provides a Form C relay output (NO/

NC) with an adjustable setpoint. The sensor is

encapsulated in a 31.75mm L x 9.525mm W x 9.525

mm H (1.25” x .375” x .375”) Aluminum probe.

Standard wire length is 1.5 m (5’). All probes are

constructed to provide excellent heat transfer,

fast response and are potted to resist moisture

penetration. A hinged and gasketed Polycarbonate

enclosure is included for ease of installation.

TYPICAL INSTALLATION

For complete installation and wiring details,

please refer to the product installation

instructions.

Find a suitable location on an exterior window

where both the probe and enclosure can be

mounted. On one side apply epoxy compound

and press firmly against the glass. Hold in place

until the epoxy has set.

Enclosure provides mounting tabs for ease of

installation.

POWER SUPPLY

12 to 28 Vac/dc

SENSOR ACCURACY

±0.2°C, 0 to 70°C (±0.36°F, 32 to 158°F)

PROBE SENSING RANGE

-40 to 100°C (-40 to 212°F)

PROBE MATERIAL

Aluminum

PROBE DIMENSIONS

31.75 mm L x 9.525 mm W x 9.525 mm H (1.25” x 0.375” x 0.375”)

WIRE MATERIAL

PVC insulated, parallel bonded

WIRE LENGTH

1.5m (5’)

CONSUMPTION

50 mA max

RELAY CONTACTS

SPDT, Form C contacts (N.O. and N.C.)

5 Amps @ 30 Vdc/250 Vac resistive

1.5 Amps @ 30 Vdc/250 vac inductive

RELAY ACTION

Activates on temperature rise

SETPOINT OPERATION

Single-turn knob-pot on PCB

ADJUSTABLE SETPOINT

38 to 104°C (100 to 220°F)

TEMPERATURE DIFFERENTIAL

Low: 1.1°C (2°F) Mid: 2.8°C (5°F) High: 5.6°C (10°F)

Jumper selectable

TEMPERATURE SENSOR

10,000Ω curve matched precision thermistor

OPERATING CONDITIONS

-10 to 50°C (14 to 122°F), 5 to 95 %RH, non-condensing

STORAGE CONDITIONS

-30 to 70°C (-22 to 158°F), 5 to 95 %RH, non-condensing

WIRING CONNECTIONS

Screw terminal block (14 to 22 AWG)

ENCLOSURE

B: Grey polycarbonate UL94-V0, IP65 (NEMA 4X)

F: Same as B with thread adapter (1/2” NPT to M16) and cable gland fitting

COUNTRY OF ORIGIN

Canada

SPECIFICATIONS

112.5 mm

4.43"

99.7 mm

3.93"

600 mm

24”

9.525 mm

0.375"

31.75 mm

1.125”

22 AWG, PVC insulation

Aluminum

116.5 mm

4.58"

53.7 mm

2.11"