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Series 659 Push-Button Temperature Transmitter
Dwyer Push-Button Temperature Transmitter, Series 659

Series 659 Push-Button Temperature Transmitter

Brand: Dwyer Instruments, LLC
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The SERIES 659 Push-Button Temperature Transmitters accept thermocouple (J, K, T), RTD (Pt100Ω) or thermistor input and provide a linearized 4 to 20 mA output.

The transmitter is quickly ranged and calibrated by using a single on-board switch. An LED provides visual indication of sensor fault and programming mode.

Models feature reverse polarity protection. Thermocouple models are also galvanically isolated and cold junction compensated.

The compact transmitter can be mounted directly within any standard thermal head for connection to the sensor.

The Series 659 Transmitters are ideal for temperature measurement in boilers, burners, ducts, furnaces, refrigeration systems, food processing, tanks, chemical processing, steam generators or any other process application.
Features
  • Push button calibration adjustment
  • Reverse polarity protection
  • Standard temperature sensor head enclosure mounting
  • Sensor fault LED

1 - 3 of 3 Part Numbers
659RTD-1
659RTD-1
DWYER Push-button Temperature Transmitter, 3-Wire RTD Pt100 Ohm Input.
  • Input - 3-Wire (RTD Pt100)
659TC-1
659TC-1
DWYER Push-button Temperature Transmitter, Thermocouple (type J, K, T) Input.
  • Input - Thermocouple (Type J, K, T)
659TH-1
659TH-1
DWYER Push-button Temperature Transmitter, Thermistor (2252 Ohm) Input.
  • Input - Thermistor (2252 Ohms)
1 - 3 of 3 Part Numbers

Specifications

Brand

Accuracy

  • ± 0.04 %
  • ± 0.04 % of Full Scale - T/C Models
  • ± 0.1° C (± 0.25° F) - Thermistor
  • ± 0.2° C (± 0.36° F) ± 0.1 % - RTD
  • ± 0.5° C (± 0.9° F)

Ambient Temperature Range

  • -20° to 70° C (-4° to 158° F) - 80 % RH, max.

Approvals & Certifications

  • CE

Burn-Out

  • Up Scale - 22 mA

Input

  • 3-Wire (RTD Pt100)
  • Thermistor (2252 Ω)
  • Thermocouple (Typical J, K, T)

Loop Resistance

  • 2,252 ohms at 24 Vdc - Thermistor
  • 700 ohms at 24 Vdc - T/C
  • 800 ohms at 24 Vdc - RTD

Output

  • 2-wire Loop-Powered
  • 4-20 mA - Linearized

Response Time

  • 500 ms

Storage Temperature

  • -40° to 70° C (-40° to 158° F) - Ambient 95 % RH, max.

Temperature Range

  • -200° to 1,370° C (-328° to 2,498° F)

Thermal Drift

  • 0.2 µA/°C (Zero)
  • 0.5 µA/°C (Span)

  • The Series 659 Transmitters are ideal for temperature measurement in boilers, burners, ducts, furnaces, refrigeration systems, food processing, tanks, chemical processing, steam generators or any other process application.
  • Process applications where a 4 to 20 mA signal is required

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