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5-7
Specifications and Reference Data
LCD METER
SPECIFICATIONS
(OPTIONS D AND E)
Functional
Specifications
Configuration
4 mA point limits: –999 to 1000.
Span limits: 0200 to 9999.
The sum of the 4 mA point and span must not exceed 9999. Adjustments are
made using non-interactive zero and span buttons.
Temperature Limits
Storage: –40 to 85 °C (–40 to 185 °F).
Operating: –20 to 70 °C (–4 to 158 °F).
Between –40 to –20 °C (–40 to –4 °F) loop is intact and the meter is not damaged.
Humidity Limitation
0 to 95% non-condensing relative humidity.
Update Period
750 ms.
Response Time
Responds to changes in input within a maximum of two update periods. If the
filter is activated, then the display responds to the change within nine update
periods.
Performance
Specifications
Digital Display Resolution
0.05% of calibrated range ±1 digit.
Analog Bar Graph Resolution
0.05% of calibrated range.
Indication Accuracy
0.25% of calibrated range ±1 digit.
Stability
Over Time: 0.1% of calibrated range ±1 digit per six months.
Temperature Effect
0.01% of calibrated range per °C on zero.
0.02% of calibrated range per °C on span over the operating temperature range.
Power Interrupt
All calibration constants are stored in EEPROM memory and are not affected by
power loss.
Failure Mode
LCD meter failure will not affect transmitter operation.
Under/Over Range Indication
Input current < 3.5 mA: Display blank.
Input current > 22.0 mA: Display flashes 112.5% of full scale value or 9999,
whichever is less.
Physical
Specification
Meter Size
2¼-inch diameter face with four, ½-inch high characters.