Dwyer 2500 - Manual (Page 14)

949-1190-1 Page 14 December, 1998
SPECIFICATIONS
Selectable Inputs: Thermocouple or RTD as ordered.
Input Impedance:
Thermocouple = 3 megohms minimum. RTD current = 200 µA.
Sensor Break Protection: De-energizes control output to protect system.
Set Point Range: Selectable (See range chart page 16 ).
Display: Two 4 digit, 7 segment 0.56" high LEDs.
Control Action: Reverse (usually heating), Direct (usually cooling) select-
able.
Proportional Band: 5 to 5000 °F or equivalent °C.
Reset Time (Integral): Off or 0.1 to 99.9 minutes.
Rate Time (Derivative): Off or 0.01 to 99.99 minutes.
Cycle Rate: 1 to 80 seconds, and on-off.
On - Off Differential: Adjustable 1° F to 999°F in 1° steps (equivalent °C).
Alarm On - Off Differential: 2° F or equivalent in °C.
Accuracy: ±0.25% of span, ±1 least significant digit.
Resolution: 1 degree or 0.1 degree, selectable.
Line Voltage Stability: ±0.05% over the supply voltage range.
Temperature Stability: 4µV/°C (2.3 µV/°F) typical, 8 µV/°C (4.5 µV°F)
maximum.
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. Current output 500VAC.
5VDC output is not isolated and must not share a common ground with
the input.
Supply Voltage: 100 to 240 VAC, nom., +10 -15%, 50 to 400 Hz. single
phase; 132 to 240 VDC, nom., +10 -20%.
Power Consumption: 5VA maximum.
Operating Temperature: -10 to +55 °C (+14 to 131 °F).
Storage Temperature: -40 to +80 °C (-40 to 176 °F).
Humidity Conditions: 0 to 90% up to 40 °C non-condensing 10 to 50% at
55 °C non-condensing.
Memory Backup: Non-volatile memory. No batteries required.
Control Output Ratings:
1. SSR, 2.5 A @ 240 VAC at 25 °C. Derates to 1.25 A @ 55 °C.
2. Relay, Form C contact (SPDT), 10 A @ 240 VAC resistive.
3. Alarm Relay, Form A contact (SPST). 3A @ 240 VAC resistive.
4. Switched Voltage (non-isolated), 5 VDC @ 20mA.
5. Proportional Current (isolated), 0 to 20 mA, selectable, into 600
ohms maximum.
Weight: 369 g (13 oz).
Agency Approvals: UL, C-UL E83725.
Front Panel Rating: IP66, (UL Type 4X).