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PRODUCT DATA

62-0265-02

Temperature Sensors for the T775

Series 2000 Stand-alone Controller

50021579-001, T775-SENS-WR, T775-SENS-WT, T775-SENS-OAT

DESCRIPTION

The T775 temperature sensors are 1097 Ohm sensors for use

with the T775 Series 2000 electronic standalone controller in

commercial heating and cooling applications.

NOTE: See the T775 Series 2000 Spec Data sheet (63-

1318) for a complete list of compatible devices

FEATURES

• Fast response time and highly accurate

• 1/2 in. (6.35 mm) stainless steel probe with a thermally

conductive epoxy

• All sensors are 1,097 Ohms PTC at 77°F (25°C)

• The 50021579-001 is a standard temperature sensor for

indoor applications

• The T775-SENS-WR is a water resistant sensor with 5 ft

leads

• The T775-SENS-WT is a water tight sensor with 6 ft

leads

• The T775-SENS-OAT is for sensing outdoor air

temperature and is housed in a weatherproof case for

outdoor use (knockouts allow for 1/2 in. conduit

connection)

• Two year warranty

APPLICATIONS

Some typical applications for the 50021579-001 and

T775-SENS-WT/-WR sensors include:

• Monitoring return air temperatures

• Monitoring discharge air temperatures

• Monitoring mixed air temperatures

Use the T775-SENS-OAT to measure outside air temperature.

T775-SENS-WR

T775-SENS-WT

T775-SENS-OAT

50021579-001

Contents

Description ....................................................................... 1

Features ........................................................................... 1

Applications ...................................................................... 1

Specifications ................................................................... 2

Other Compatible T775 Sensors ...................................... 2

Ordering Information ........................................................ 2

Installation ........................................................................ 4

Troubleshooting ................................................................ 4

Summary of content (4 pages)

PAGE 1
Temperature Sensors for the T775 Series 2000 Stand-alone Controller 50021579-001, T775-SENS-WR, T775-SENS-WT, T775-SENS-OAT PRODUCT DATA FEATURES • Fast response time and highly accurate 50021579-001 • 1/2 in. (6.
PAGE 2
TEMPERATURE SENSORS FOR THE T775 SERIES 2000 STAND-ALONE CONTROLLER SPECIFICATIONS Sensor Resistance vs. Temperature Figure 1 show how sensor resistance varies with temperature for a sensor having a positive temperature coefficient (PTC) or 2.1 Ohms per degree F (3.85 Ohms per degree C). Probe Dimensions: See Figures 1 through 4 RESISTANCE (OHMS) Operating temperature range: 50021571-001: -40 F to 350 F (-40C to 177C) Short term spikes to 392F (200C) okay.
PAGE 3
TEMPERATURE SENSORS FOR THE T775 SERIES 2000 STAND-ALONE CONTROLLER Dimension Drawings 3/8 ± 1/8 (10 ± 3) WHITE RED RED 1/2 ± 1/8 (13 ± 3) 2 ± 1/16 (51 ± 2) 1-1/2 ± 1/16 (38 ± 2) BLACK HEATSHRINK 50021579-001 -80C to 200C 0641 9 ± 1/8 (227 ± 3) T775-SENS-WT -40 to 270F 0708 6 FT ± 3 IN. (18.28 M ± 76 MM) 3 CONDUCTOR TEFLON CABLE 1/4 O.D. (6) 2 ± 1/64 (51 ± 1) 1/4 O.D. (6) 2 (3/16 DIA.) 2 ± 1/64 (51) (5 DIA.) (51 ± 1) STAINLESS STEEL PROBE M23937 M23936 Fig. 2.
PAGE 4
TEMPERATURE SENSORS FOR THE T775 SERIES 2000 STAND-ALONE CONTROLLER INSTALLATION The 50021579-001 and T775-SENS-WR/WT remote probe temperature sensors are single point temperature sensors with Stainless Steel (304 Series) probes. Use care when installing the probes. Pay attention not to kink the cable, especially on the 5 ft units. The red/black wires should be securely connected to the controller. The probe must be strapped tightly to the pipe, duct, or device that is being monitored.