GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

REMOTE PROBE STRAP-ON HIGH LIMIT THERMOSTAT

THRP SERIES

ACCESSORIES - INCLUDED WITH F STYLE ENCLOSURE

PRODUCT DESCRIPTION

The single point strap-on 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 6 mm (0.236”) OD, 304

stainless steel probe and is available in various

lengths (see ordering chart). Standard wire

length is 5’ (1.5 m). 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.

For best results, thermal conductive

compound should be applied to pipe prior to

mounting the probe.

Find a suitable location along the pipe where

both the probe and remote enclosure can be

mounted. If necessary, remove a section of

insulation from pipe. Position the probe directly

on the pipe and secure using a pipe clamp. For

added security, make 1 to 3 loops of the sensor

cable around the pipe and feed through wire hole

on the enclosure and secure using the supplied

grommet. If applicable, the pipe insulation can be

re-applied to the pipe over the probe.

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

304 series stainless steel

PROBE DIAMETER

6 mm (0236”)

PROBE LENGTH

50 mm, 100 mm, 150 mm, 200 mm (2”, 4”, 6”, 8”)

WIRE MATERIAL

PVC insulated, parallel bonded

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

Range 1: 38 to 104°C (100 to 220°F)

Range 2: 38 to 60°C (100 to 140°F)

SETPOINT TEMPERATURE

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

1.524 m

6.00’

6.0 mm

0.236"

Various

Lengths

FT-6 Rated Plenum Cable, 22 AWG

304 Series S/S Probe

116.5 mm

4.58"

53.7 mm

2.11"

112.5 mm

4.43"

99.7 mm

3.93"

0.5" NPT

CABLE GLAND FITTING

THREAD ADAPTER 1/2” NPT TO M16