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SR2800
POTENTIOMETER POSITION INPUT
TWO-WIRE TRANSMITTER
FEATURES
 | Provides DC Output Proportional to a Potentiometer Position Input |
| Potentiometer Values from 1 kilohm to 50 kilohms |
| Reverse Polarity-Protected |
| Test Points for Loop Current Monitoring Without Breaking Loop Circuit |
| 50 mm Diameter Case - 33 mm Mounting Hole Spacing |
| NEMA-4 and Explosion-Proof Connection Heads Available |
| Low Cost |
| Intrinsically Safe Design with FM and CSA Approvals Pending |
| 5 + 5 Year Warranty |
DESCRIPTION
The SR2800 is a low-cost, reliable, potentiometer input two-wire transmitter for field or panel mounting in various industrial housings
and enclosures. It provides a DC output current (4/20 mA) proportional to the wiper position of a potentiometer.
The module utilizes a stable 2.5 VDC power supply to excite the potentiometer. Any value potentiometer from 1 kilohm to 50 kilohms may
be used. The output ZERO and SPAN controls are accessible through the top of the case. Zero is adjustable
±20% and span ±15%.
Terminations are made to screw terminal connectors on the top of the case.
Test points located on the SR2800 front panel allow verification of loop current value, with a milliameter, without breaking the loop current.
TYPICAL APPLICATION
Remote tank level, valve or actuator position data acquisition.
MOUNTING
The SR2800 can be mounted in a connection head (TSH-A6L), explosion-proof housing
(XJAY), or on a flat surface using the two 4.5 mm diameter mounting holes provided. Standard 33 mm hole center spacing allows for
mounting in most connection heads. The 5.08 mm center hole allows clearance for input wiring. An optional DIN-Rail mounting kit is
available (DMP2000).
SPECIFICATIONS
INPUT POTENTIOMETER RESISTANCE
Any value from 1 kilohm to 50 kilohms
COMMON MODE REJECTION
120 dB, DC to 60
Hz
INPUT SPAN ADJUSTMENT
75% to 100% of pot
rotation
INPUT OFFSET ADJUSTMENT
0 to 25% of pot
rotation
OPERATING TEMPERATURE
-13°F to
176°F
-25°C to
80°C
INPUT IMPEDANCE
> 10 megohms
SUPPLY VOLTAGE EFFECT
0.02% of span max, 10 to 36 V
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OUTPUT
RANGE
4/20 mA
Current limited = 35 mA
MAX LOAD RESISTANCE
= [(V supply - 10)/20 mA] kilohms
RESPONSE TIME
- Step
Change
100 ms for 99% of final value
TEMPERATURE STABILITY
±0.015 % of span per°C
POWER
10-36 VDC, polarity protected
ACCURACY
±0.1% of span
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ORDERING INFORMATION
| SR2800,
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Potentiometer % of travel
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Example: SR2800,0/100%
Note:
The potentiometer value is not required in the ordering information.
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