| Hardware Specifications |
| Analog inputs
| Eight (one analog input can be jumpered for direct 100-Ohm platinum RTD input) |
| Range
| Nominal 0 to 5 Vdc, 1 to 5 Vdc, 0 to 25 mA, or 4 to 20 mA (jumper selectable) |
| Resolution
| 12 Bit, unipolar |
| Accuracy
| Current inputs ±0.1% of full scale, voltage inputs ±0.1% of full scale (including linearity, hysteresis, repeatability, and resolution) |
| Temperature coefficient
| ±0.01% of full scale/degree F |
| Analog outputs
| Two |
| Range
| 0 to 25 mA or 4 to 20 mA |
| Resolution
| 12 Bit, unipolar |
| Accuracy
| ±0.1%, firmware calibratable to ±0.1% (including linearity, hysteresis, repeatability, and resolution) |
| Digital inputs
| Eight inputs @ 4 to 32 Vdc, 2 Hz maximum, 2 mA current limited (firmware filtered) |
| Optional
| Turbine meter prescaler accepts up to 5 KHz signals from turbine meter |
| Digital outputs
| Eight outputs @ 0.5 Amp continuous, 6 Amp pulsed, 32 Vdc maximum |
| Real time clock
| Accurate to within ±1 minute/month over operating temperature range |
| Data ports
| Two RS-232 asynchronous serial ports (1 for MMI, 1 for 300 to 19.2 KBaud telecommunications)
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| Expansion ports provide RS-232 or RS-485 interface to external instruments and/or controllers |
| Operating range
| -40° to +85°C, 0-95% relative humidity (non-condensing) |
| Power requirements
| 8 to 32 Vdc @ 2.5 Watts average |
| Options
| 110 Vac, 50/60 Hz input with one day battery
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| (12 Vdc) backup, 0° to 60°C operation (assumes 1 Amp maximum load) |
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| 24 Vdc battery charging and backup for AC or solar powered units |
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| 12/24 Vdc DC to DC converter, used for 4 to 20 mA transmitters when battery backup is 12 Vdc |
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| 220 Vac, 50/60 Hz operation for AC input units |
| Local display
| 2 x 24 LCD (-20° to +70°C), optional with 20-key keypad |
| Overvoltage/transient protection
| All inputs/outputs and power supply devices provided with surge protection to ANSI/IEEE C37-90.1-1989 (IEEE Std. 472-1974) |
