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Series 2500 Temperature Process Controller
 
 
The Dwyer Series 2500 Temperature Control 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. Optional programmable alarm can act as high or low or high/low guardband alarm.

A water and corrosion resistant front panel (NEMA 4X; IP 65), 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. See Dimensions
 
STOCKED MODELS
Model Alarm Input Output*
25011 No Thermocouple SSR
25012 No Thermocouple 5 VDC
25013 No Thermocouple Relay
25015 No Thermocouple 4-20 mA
25021 No RTD SSR
25022 No RTD 5 VDC
25023 No RTD Relay
25025 No RTD 4-20 mA
25111 Yes Thermocouple SSR
25112 Yes Thermocouple 5 VDC
25113 Yes Thermocouple Relay
25115 Yes Thermocouple 4-20mA
25121 Yes RTD SSR
25122 Yes RTD 5 VDC
25123 Yes RTD Relay
25125 Yes RTD 4-20 mA
*When ordering a control to operate contactor or solenoid loads greater than 100 mA, the SSR output should be selected instead of the Relay. If the Relay is selected, also order part number A-600, R/C Snubber.
 
PHYSICAL DATA
Input Impedance: Thermocouple = 3 megohms minimum, RTD current = 200 mA maximum.
Sensor Break or Short Protection: De-energizes control output to protect system.
Display: Two-4 digit, 7 segment, 0.56" high LED.
Control Action: Selectable for reverse (usually heating) or direct (usually cooling).
Ramp: One ramp time adjustable from 0-100 hours.
Accuracy: ±0.25% of span, ±1 degree.
Resolution: 1 degree or 0.1 degree. Temperature Stability: 2.3 mV/°F (4 mV/°C) typical.
Common Mode Rejection: 140 db minimum at 60 Hz.
Normal Mode Rejection: 65 db typical, 60 db at 60 Hz.
Isolation: Relay and SSR outputs; 1500 VAC. 0-20 mA output; 500 VAC. 5 VDC output is not isolated.
Power Consumption: 5 VA maximum.
Supply Voltage: 100-240 VAC nominal, +10%, 50-400 Hz, single phase; 132-240 VDC nominal, + 10%.
Operating Temperature Range: 14 to 131°F (-10 to 55°C).
Storage Temperature Range: -40 to 176°F (-40 to 80°C).
Humidity Range: 0 - 90% up to 104°F (40°C) non-condensing, 10 to 50% at 131°F (55°C) non-condensing.
Memory Backup: Non-volatile memory. No batteries required.
Control Output Ratings:
SSR: 2.5 A @ 240 VAC resistive at 77°F (25°C). De-rates to 1.25 A @ 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.
Weight: 13 ounces (369 grams).
Agency Approvals: UL and CSA pending.
 
Suggested Specification:
Temperature/Process Controller shall be 1/4 DIN microprocessor based with two 4 digit LED displays for setpoint, alarm status and °F or °C. Input shall be (selectable J, K, T, E, N or L thermocouple)(DIN-RTD). Output shall be (SSR)(5 VDC)(Relay)(Isolated 420 mA) programmable for manual or automatic Self-Tune® PID control (with)(without) alarm. Front panel shall be designed to meet NEMA-4X, IP65 ratings for weather and corrosion resistance. Accuracy shall be ±0.25% of span, ±1 degree. Temperature/Process Controller shall be Dwyer Instruments, Inc. Model No. 25_____.