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Moore Industries-International, Inc.
- 16 -
User’s Manual
224-790-00K
May 2018
Moore industries-International, Inc.
Bench Check Procedure
Sensor Input (TPRG):
1. In order to provide an input to your SPA
2
TPRG you will need to use an appropriate input
simulator. By example – if you plan to use your SPA
2
with a thermocouple input you will
need to use a thermocouple simulator to provide the appropriate input during your bench
check. The same goes for an RTD simulator, a millivolt source, a potentiometer, or a decade
resistance box. Use whichever input source is correct for your intended application. Please
see Figure 2.2 for the correct sensor input connections.
Figure 2.2.
SPA
2
(TPRG) Input Hook up guide
3. Set your input source to the low end of your configured input span. By example – if your input
is configured for a current (mA) and your input range is set for 4-20mA then use a current
source and set it to 4mA. Verify that the SPA
2
is reading 4mA on its display window.
4. Set your input source to the high end of your configured input span and verify that the SPA
2
display window correctly reflects the input.
5. Temporarily remove one of your input connections to verify that the Broken Wire feature is
working.
6. Alarm Relays:
By adjusting your input up and down you can confirm the operation of the Alarm Relays. Use
your multimeter (set to ohms) to verify the state of the relay contacts.
2. Power Input:
Connect the appropriate power source as shown in Figure 2.3.
3. Set your input simulator to the low end of your configured input span. By example – if your
input is configured for a Type T thermocouple and your input range is set for 0-100° C then use
a Type T thermocouple simulator and set it to simulate 0° C. Verify that the SPA
2
is reading 0°
C on its display window.
4. Set your input simulator to the high end of your configured input span and verify that the SPA
2
display window correctly reflects the input.
5. Temporarily remove one of your input connections to verify that the Broken Wire feature is
working.
6. Alarm Relays: By adjusting your input up and down you can confirm the operation of the Alarm
Relays. Use your multimeter (set to ohms) to verify the state of the relay contacts.
+
–
1
4
3
2
1
4
3
2
1
4
3
2
Thermocouple
and Millivolt
Input
2-Wire RTD
or Decade
Resistance Box
1
4
3
2
3-Wire RTD
or Decade
Resistance Box
4-Wire RTD
or Decade
Resistance Box
1
4
3
2
Potentiometer
Input
1
4
3
2
Dual 2-Wire Sensor
Measurement 1
Measurement 2
One 2-Wire Sensor and One 3-Wire Sensor
Measurement 1
Measurement 2
Three 2-Wire Sensors
Measurement 1
Measurement 2
1
4
3
2
1
4
3
2
Measurement 3
Programmable Limit Alarm Trips
SPA
2
SECTION 2
