657-1 Relative Temperature Transmitter

Model 657-1 Relative Humidity/Temperature Transmitter

Dual Channel Design for Simultaneous 4-20 mA Output Signals

The SERIES 657 Transmitters provide two 4 to 20 mA channels to produce separate output signals for both relative humidity and temperature. These devices deliver ±2% accuracy for humidity and ±1°F for temperature measurements. Stainless steel probe can be easily mounted to most ductwork using either of the two optional kits below.

Product Applications

Cleanroom monitoring

HVAC/building control monitoring

ModelDescription

657-1Relative humidity/temperature transmitter.

Specifications

Service:Dry clean air.

Range:Relative Humidity: 0-100%; Temperature: 32 to 212°F (0 to 100°C).

Accuracy:Relative Humidity: ±2% (10-90% RH), ±3% (0-10% and 90-100% RH); Temperature: ±1°F (0.5°C).

Enclosure Temperature Limit:32 to 140°F (0 to 60°C).

Pressure Limits:1 psi (.07 bar).

Compensated Temperature Range:32 to 140°F (0 to 60°C).

Power Requirements:10-35 VDC.

Output Signal:2 channels each 4-20 mA. Loop powered on RH channel.

Electrical Connections:4 screw type terminal.

Mounting Orientation:Mount in any position.

Probe:5/16" x 10" (0.8 x 25.4 cm) stainless steel.

Weight:5.5 oz (156 g).

Features

Polymer film humidity and thin film RTD temperature sensors offer highly reliable and stable measurements

Remote mount housing offers installation flexibility (657-1)

Rugged die-cast aluminum housing is great for industrial applications (657C-1)

Accessories

Model NumberDescription

A-158Split flange.

A-159Mounting gland with 1/2" male NPT.

Power Source : Electric

Material : 5/16

Condition : New

Accuracy : ±3% (0-10% And 90-100% RH); Temperature: ±1°F (0.5°C).

Color : Grey

Warranty : 1year

Voltage : 10-35 VDC.

Power : 10-35 VDC.

Certification : YAS

Type : Temperature Transmitters, 657-1 Relative Temperature Transmitter

657-1 Relative Temperature Transmitter

Model 657-1 Relative Humidity/Temperature Transmitter

Dual Channel Design for Simultaneous 4-20 mA Output Signals

The SERIES 657 Transmitters provide two 4 to 20 mA channels to produce separate output signals for both relative humidity and temperature. These devices deliver ±2% accuracy for humidity and ±1°F for temperature measurements. Stainless steel probe can be easily mounted to most ductwork using either of the two optional kits below.

Product Applications

Cleanroom monitoring

HVAC/building control monitoring

ModelDescription

657-1Relative humidity/temperature transmitter.

Specifications

Service:Dry clean air.

Range:Relative Humidity: 0-100%; Temperature: 32 to 212°F (0 to 100°C).

Accuracy:Relative Humidity: ±2% (10-90% RH), ±3% (0-10% and 90-100% RH); Temperature: ±1°F (0.5°C).

Enclosure Temperature Limit:32 to 140°F (0 to 60°C).

Pressure Limits:1 psi (.07 bar).

Compensated Temperature Range:32 to 140°F (0 to 60°C).

Power Requirements:10-35 VDC.

Output Signal:2 channels each 4-20 mA. Loop powered on RH channel.

Electrical Connections:4 screw type terminal.

Mounting Orientation:Mount in any position.

Probe:5/16" x 10" (0.8 x 25.4 cm) stainless steel.

Weight:5.5 oz (156 g).

Features

Polymer film humidity and thin film RTD temperature sensors offer highly reliable and stable measurements

Remote mount housing offers installation flexibility (657-1)

Rugged die-cast aluminum housing is great for industrial applications (657C-1)

Accessories

Model NumberDescription

A-158Split flange.

A-159Mounting gland with 1/2" male NPT.

Power Source : Electric

Material : 5/16

Condition : New

Accuracy : ±3% (0-10% And 90-100% RH); Temperature: ±1°F (0.5°C).

Color : Grey

Warranty : 1year

Voltage : 10-35 VDC.

Power : 10-35 VDC.

Certification : YAS

Type : Temperature Transmitters, 657-1 Relative Temperature Transmitter