Dwyer SC4151 - Manual (Page 3)

949-0528-2 Page 3 of 4 June, 2000
Wiring
The wiring terminals for the SC4130 /SCL4130/
SC4151/SCL4151 are compression type. To
open the wiring terminal, turn the screw for that
terminal counterclockwise. Slide the wire into
the terminal space. While holding the wire in
place, turn the screw clockwise to tighten. Do not
overtighten. The wire should be held snugly in
place.
For the SC4130/SCL4130 wire the thermocouple
to terminals 1 (negative / red wire) and 2 (posi-
tive).
For the SC4151/SCL4151 wire the RTD to termi-
nals 1 and 2. Three wire RTDs should have the
two common wires connected to terminals 2 and
3. Two wire RTDs need a jumper wire placed
between terminals 2 and 3.
Power for SC4130/SC4151 is 85 to 265 Vdc/Vac 50 to 400 Hz.
Power for SCL4130/SCL4151 is 12 to 24 Vdc/Vac 50 to 400 Hz.
Wire the input, output, and power as shown on the wiring label. Do not
run Class 2 signal wires adjacent to or in the same conduit as power
wires.
Calibration
The SC4130, SCL4130, SC4151, and SCL4151 are calibrated at the
factory for correct output for the range selected. For field calibration
follow the following procedure.
1. Apply the appropriate input (millivolts for the SC4130/SCL4130,
ohms for the SC4151/SCL4151) for the low end of the scale.
2. Adjust the ZERO screw for the appropriate low end output.
3. Apply the appropriate input for the high end of the scale.
4. Adjust the SPAN screw for the appropriate high end output.
5. Repeat as necessary.
OUTPUT
INPUT
_
6
3
+
+
5 4
2 1
_
POWER
10
9 8 7
11
1
12
T
1 2 3 4 5 6
ON