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Dwyer Series 651 Standard Temperature Transmitter with Head-Mount - Standard Temperature Transmitters with Head-Mount
DwyerStandard Temperature Transmitters with Head-Mount

Dwyer Series 651 Standard Temperature Transmitter with Head-Mount

The Dwyer Series 651 Standard Temperature Transmitter with Head-Mount (MPN 651A-20) is an RTD-based temperature transducer with a 392 °F temperature range. It requires a 4 to 20mA DC power supply and offers a…

SKU 3G-OTH-178128

Also listed as: 651A20 · 651A 20

Brand
Dwyer
Item
Series 651 Standard Temperature Transmitter with Head-Mount
Category
Standard Temperature Transmitters with Head-Mount
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Technical Specifications

Dwyer
Manufacturer Part Number
651A-20
Series
651
Type
RTD, 392°F Process Media Temp Measurement - Max
Power Required
4 to 20mA DC
Temperature Range
392 °F
Sensing Element Type
RTD
Temperature Accuracy
±0.2°C plus 0.2% reading

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer Series 651 Standard Temperature Transmitter with Head-Mount (MPN 651A-20) is an RTD-based temperature transducer with a 392 °F temperature range. It requires a 4 to 20mA DC power supply and offers a temperature accuracy of ±0.2°C plus 0.2% of reading.

Frequently Asked Questions

What is the Dwyer 651A-20 temperature transducer used for?

The Dwyer 651A-20 is an RTD-based temperature transducer used for measuring process media temperature up to 392 °F in industrial applications. It is commonly installed in HVAC, refrigeration, and process control systems where a 4 to 20mA DC output is required for remote monitoring.

What are the specifications of the Dwyer 651A-20?

The Dwyer 651A-20 is a Series 651 standard temperature transmitter with head-mount. It uses an RTD sensing element, requires 4 to 20mA DC power, measures temperatures up to 392 °F, and offers accuracy of ±0.2°C plus 0.2% of reading. The manufacturer part number is 651A-20.

Where to buy the Dwyer 651A-20 worldwide?

3G Electric supplies the Dwyer 651A-20 temperature transducer to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this RTD-based transmitter.

How to install a Dwyer 651A-20 head-mount temperature transmitter?

Install the Dwyer 651A-20 by mounting the head directly to the RTD probe or thermowell. Connect the 4 to 20mA DC loop power supply to the transmitter terminals, ensuring polarity is correct. Follow standard wiring practices for industrial temperature sensors and verify output at the controller.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer standard temperature transmitters with head-mount. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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