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DXP 4-20mA Installation, Operation & Maintenance
2
Features and Specifications
4-20mA Position Monitorinig Description4-20mA Position Monitorinig Description
4-20mA Position Monitorinig Description4-20mA Position Monitorinig Description
4-20mA Position Monitorinig Description
The 2-wire 4-20mA transmitter will generate a nominal 4 – 20mA output for full-range actuation of the valve. The transmitter is capable of generating
signals below 4mA and above 20mA if the position sensor indicates an out of range value.
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FeaFea
Fea
tures:tures:
tures:tures:
tures:
1) Single push button easy calibration eliminates zero/
span calibration interaction in both clockwise and
counterclockwise actuator/valve rotation directions.
2) Non-volatile memory of set points (set points remain
after loss of power)
3) 4-20mA power connection is not polarity sensitive
4) No internal backlash – direct shaft position feedback
5) No gear wear or mechanical binding
6) Small package size for easier access to limit switch
cams. The small packaging allows for additional
options that can be mounted in the valve monitoring
enclosure
7) Position measurement range from 20
0
to 320
0
.
Factory set for 20
0
to 180
0
operation in counter
clockwise rotation to open and 20
0
to 90
0
operation
in clockwise rotation to open applications.
8) Advanced diagnostics includes detection of dead
band, out of range indication and detection of
internal memory errors
9) Transmitter PCB is potted and sealed
10) Included with all valve monitoring switching options,
incl. DPDT mechanical
11) +/- 1% position linearity for the complete device
12) Selectable +/- 3% over and under travel capability
or full linear options set during calibration
13) Hysteresis:
0.5% of full-scale
14) Repeatability:
0.3% of full scale.
15) Temperature Range: -40
0
to 85
0
C
Electrical DaElectrical Da
Electrical DaElectrical Da
Electrical Da
ta:ta:
ta:ta:
ta:
-Voltage Input Range: 8.5 - 34 Volts DC
-Standard Output Signal: Two wire 4-20mA with out of range indication
-Input Polarity: Bi-Directional
Potentiometer OnlPotentiometer Onl
Potentiometer OnlPotentiometer Onl
Potentiometer Onl
y Shaft Position Monitoring Descriptiony Shaft Position Monitoring Description
y Shaft Position Monitoring Descriptiony Shaft Position Monitoring Description
y Shaft Position Monitoring Description
The potentiometer only version (without the 4-20mA Position Transmitter Module) will generate a ratio metric
voltage output based on the excitation voltage and the position of the valve.
Standard potentiometer options include 0-1k ohm and 0-10k ohm.
Potentiometer FeaPotentiometer Fea
Potentiometer FeaPotentiometer Fea
Potentiometer Fea
tures:tures:
tures:tures:
tures:
1) Hollow shaft mounting requires no gears and has no backlash
2) Direct shaft position feedback
3) Capable of 4,000,000 lifetime operations
4) Better than 0.3° resolution
5) Conductive plastic Potentiometric sensor for excellent environmental protection
6) Temperature Range: -40
0
to +85
0
C
TT
TT
T
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ypical 4-20mA Positionypical 4-20mA Position
ypical 4-20mA Position
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T
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