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Series-2500 Temperature/Controller

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

$1,065.20

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.

*Highlighted options are not compatible. Please select a different combination.

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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