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Series-2500 Temperature/Controller

Temperature controller, thermocouple input, SSR output, with alarm.


Item# 25111

In stock

Lead Time (If not in stock): 3 weeks
Temperature controller, thermocouple input, SSR output, with alarm. 25111 25111
  • Sensing elements have been coated with an engineered conformal coating to ensure durability and longevity
  • Field selectable ranges can be quickly configured without power to the unit
  • Eliminates the need for troublesome conversions with direct reading scales
  • High repeatability from precision machined tapered bores

25111 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Input Type
Output Type
Measurement Type
Control Outputs
Form Factor
Number Of Inputs
Supply Voltage Type
Ramp And Soak
Display Type
Additional Feature
Supply Voltage
Number Of Outputs
DIN Size

  • Accuracy ±0.25% of span, ±1 degree.
  • Control Action Selectable for reverse (usually heating) or direct (usually cooling).
  • Control Output Ratings SSR: 2.5A @ 240 VAC resistive at 77°F (25°C), de-rates to 1.25A @ 130°F 55°C); Relay: SPDT, 10 A @ 240 VAC resistive; Switched Voltage (non-isolated) 5 VDC @ 20 mA; Proportional Isolated Current: 0-20 mA, selectable, into 600 Ohms maximum.
  • Display Two 4-digit, 7 segment, 0.56" high LED.
  • Front Panel Rating NEMA 4X (IP65).
  • Input Impedance Thermocouple = 3 megohms minimum, RTD current = 200 µA maximum.
  • Inputs Inputs: Thermocouple or RTD.
  • Isolation Relay and SSR outputs; 1500 VAC. 0-20 mA output; 500 VAC. 5 VDC output is not isolated.
  • Memory Backup Non-volatile memory. No batteries required.
  • Operating Temperature 14 to 131°F (-10 to 55°C).
  • Power Consumption 5 VA maximum.
  • Ramp One ramp time adjustable from 0-100 hours.
  • Resolution 1 degree or 0.1 degree.
  • Supply Voltage 100-240 VAC nominal, ±10%, 50-400 Hz, single phase; 132-240 VDC nominal, ±10%.
  • Weight 13 oz (369 g).

The Series 2500 Temperature Controller provides an impressive array of features in an economical 1/4 DIN package. Features include on-off, time proportioning, proportional, PI, PD, or full PID control, programmable from the front panel, or use Self-Tune PID. Input types are selectable from a variety of thermocouple types (J, K, T, E, N or L) or DIN, NIST or Ni RTD ’s. Outputs include solid state relay, mechanical relay, 5 VDC (ideal for driving an external SSR) or isolated 4-20 mA proportional current. Programmable alarm can act as high or low or high/low guard band alarm.

A water and corrosion resistant front panel (NEMA 4X; IP65), input fault timer, digital input filter, Self-Tune ramp to setpoint, four password protected security levels and °F or °C display selection are all standard. Entire electronics package is field replaceable without wiring changes thanks to removable front panel.

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