model 657c-1 relative humidity transmitter

model 657c-1 relative humidity/temperature transmitter

dual channel design for simultaneous 4-20 ma output signals – conduit housing

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

• 657c-1relative humidity/temperature transmitter.

specifications

• service:humidity & temperature detection in 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 limits: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 the rh channel.
• electrical connections:4 screw type terminal.
• mounting orientation:mount in any position.
• probe:5/16" x 9-1/10" (0.8 x 23.1 cm) stainless steel.
• weight:10 oz (284 g).

features

• polymer film humidity and thin film rtd temperature sensors offer highly reliable and stable measurements.
• rugged die-cast aluminum housing is great for industrial applications

accessories

model numberdescription

• a-158split flange.
• a-159mounting gland with 1/2" male npt.

model chart

• example -657c-1-at-model 657c-1-at relative humidity/temperature transmitter,with aluminum tag.
• model-657c-1-relative humidity/temperature transmitter
• options-at-aluminum tag
•                - nist-nist certificate of calibration
•                -st-stainless steel tag

related

• series rh-r
• series rh-r
• series wht
• series wht
• series rhp
• series rhp
• model 657-1
• model 657-1
• series rhp-e/n
• series rhp-e/n
• series hht
• series hht
• model 657c-1
• model 657c-1

model 657c-1 relative humidity transmitter

model 657c-1 relative humidity/temperature transmitter

dual channel design for simultaneous 4-20 ma output signals – conduit housing

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

• 657c-1relative humidity/temperature transmitter.

specifications

• service:humidity & temperature detection in 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 limits: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 the rh channel.
• electrical connections:4 screw type terminal.
• mounting orientation:mount in any position.
• probe:5/16" x 9-1/10" (0.8 x 23.1 cm) stainless steel.
• weight:10 oz (284 g).

features

• polymer film humidity and thin film rtd temperature sensors offer highly reliable and stable measurements.
• rugged die-cast aluminum housing is great for industrial applications

accessories

model numberdescription

• a-158split flange.
• a-159mounting gland with 1/2" male npt.

model chart

• example -657c-1-at-model 657c-1-at relative humidity/temperature transmitter,with aluminum tag.
• model-657c-1-relative humidity/temperature transmitter
• options-at-aluminum tag
•                - nist-nist certificate of calibration
•                -st-stainless steel tag

related

• series rh-r
• series rh-r
• series wht
• series wht
• series rhp
• series rhp
• model 657-1
• model 657-1
• series rhp-e/n
• series rhp-e/n
• series hht
• series hht
• model 657c-1
• model 657c-1