NovaLynx Corporation
200-100C-4
Page 5
September 2018
The potentiometer has an electrical "dead band" which is marked by a white stripe on the gear. The "dead
band" occupies 20 degrees of rotation, so to compensate the sensor is calibrated from 4.0 mA to 19.1 mA.
The formula is ((340/360 *16)+4) = 19.1 mA.
The potentiometer has high accuracy and linearity, but the overall resistance varies from one
potentiometer to another (± 10%). For this reason each Signal Conditioner is calibrated with the
companion Analog Output Evaporation Gauge.
4
INSTALLATION
The 200-100C-4 Signal Conditioner circuit board must be housed in a weatherproof enclosure. The
circuit board is mounted to a small plate which has two mounting holes for easy attachment to a flat
surface (Figure 1). One of the mounting holes also secures a terminal strip above the circuit board.
The 200-100C-4N includes a weatherproof enclosure and hardware for mounting to a mast up to 1 ¼"
(3.2 cm) in diameter. The mast mounting hardware can be removed and the enclosure mounted to a
flat surface instead if required. There are four mounting holes, accessible when the lid of the enclosure
is removed (Figure 2). Mount the enclosure with the cable grips at the bottom.
Accuracy
0.25%
Linearity
0.25%
Rotation
360° continuous
Electrical angle
340° ± 1°
Resistance
1,000 ohms ± 10%
Operating temperature
-40° to +140° F (-40° to +60°C)
Mechanical range
0 to 10 inches (0-254 mm)
Electrical range
0 to 9.444 inches (0-239.9 mm)
Output span (340 degrees)
4 to 19.1 mA = 0 to 9.444 inches (0 to 239.9 mm)
Supply voltage
8 to 30 Vdc
Connection type
2-wire current loop
Cable
Not included
Cord grip diameter range (255-100C-4N only)
0.181" to 0.312" (4.6 to 7.9 mm) diameter
Mounting (255-100C-4N only)
1 ⅜" (35 mm) diameter pipe mount
200-100C-4 Dimensions (circuit board)
3.0 x 2.0 x 1.6 inches (7.6 x 5.1 x 4.1 cm)
200-100C-4N Dimensions (NEMA box)
4.8 x 4.7 x 2.2 inches (12.2 x 12.0 x 5.6 cm)
Weight / Shipping
1 lbs (0.45 kg) / 2 lbs (0.91 kg)
Potentiometer Specification
Transmitter Specification
Overall Specification
