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Rosemount Model 444 Alphaline Temperature Transmitters
6-6
ANALOG METER
The analog meter plugs directly into the Model 444 to provide an accurate local
indication of user-specified units. It requires an analog 4–20 mA dc, 10–50 mA
dc, or 40–200 mV dc transmitter output from a two-wire transmitter, and adds
no voltage drop in the 4–20 mA current loop when connected directly across the
transmitter test terminals.
The large 2¼-inch diameter meter face has a two-inch long scale for easy
readability, as shown in Figure 6-4. A meter-zero adjustment is located on the
meter faceplate. You can rotate the meter in 90-degree increments within the
transmitter housing for convenient viewing.
FIGURE 6-4. Analog Meter
Face.
Analog Meter
Specifications
Functional
Specifications
Input Signal
4–20 mA dc.....
Maximum series resistance is
10–50 mA dc..
10 ohms for milliameters.
40–200 mV
Meter Indication
0 to 100% linear scale.
Special optional ranges.
Overload Limit
150% of rated end scale value for two minutes.
Temperature Limits
–40 to 65 °C (–40 to 150 °F).
Humidity Limit
0 to 100% relative humidity.
Zero Adjustment
Adjustment screw on face of meter.
Performance
Specifications
Indication Accuracy
±2% of calibrated span.
Temperature Effect
Less than 2% of full scale at any point within the temperature limits.
Physical Specification Meter Size
2¼-inch diameter face with 2-inch long scale.
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751-2534C01B
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