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657-1 | Relative humidity/temperature transmitter. | Dwyer

Relative humidity/temperature transmitter.

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Dwyer 657-1 Documents

657 Instruction Manual 657C Instruction Manual Series 657 Catalog Page More Info

Overview

Details for 657-1

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Relative humidity/temperature transmitter.

Series 657 Relative Humidity/Temperature Transmitter

Dual Channel Design for Simultaneous 4-20 mA Output Signals

The Series 657 Relative Humidity/Temperature Transmitters provide two4-20 mA channels to produce separate output signals for both relative humidityand temperature. These devices deliver ±2% accuracy for humidity and ±1°F fortemperature measurements. Stainless steel probe can be easily mounted to mostductwork using either of the two optional kits below.

*NOTE: The configurator is only available for the Series 657C.

Product Applications

Cleanroom monitoring
HVAC/building control monitoring

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)

Specifications

Series: 657 Relative Humidity/Temperature Transmitter
Category/Type: Air Quality
Type: Humidity / Temperature Transmitters
Series: 657 Relative Humidity/Temperature Transmitter
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).
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: 657-1: Stainless steel 5/16" x 10"(0.8 x 25.4 cm); 657C-1: 5/16" x 9-1/10" (0.8 x 23.1 cm).
Weight: 657-1: 5.5 oz (156 g); 657C-1: 10 oz (284 g.).