ISSPRO R4131-24VDC - Manual (Page 2)

Form No. 438B - (4/23/01 Rev. C) Page 2 of 2
Note:
A type “K” thermocouple installed for an existing pyrometer can be used for both the
TTM and the pyrometer. It is connected as follows: Connect wires from the pyrometer
terminals to the thermocouple inputs of the TTM (copper wire is acceptable). Polarity is
important. The yellow pyrometer lead wire, terminal (+), connects to “T/C+” and the red
leadwire, terminal (-), connects to “T/C-“.
Field Adjustment:
Adjustment of the set point can be performed as follows: Remove the cover and turn the adjustment
trimmer counter-clockwise (CCW) to lower the set point. Operate engine and allow it to idle down to the
desired shut off temperature. Slowly turn the adjustment trimmer clockwise (CW) until the engine shuts
off. Restart the engine and check operation. Make small adjustments as necessary.
Installation Diagram – ISSPRO Turbo Temp Monitor
R4130, R4130-24VDC
R4131, R4131-24VDC
IGN Switch
Vehicle Ign. Ckt.
Use #16 AWG
Wire or Larger
Indicator
Lamp
(opt.)
Disable
Switch N/C
(opt.)
Existing Pyrometer
Yellow
Red
C
oppe
r
Wi
re
s #
2
2
A
W
G
o
r
L
ar
g
er
Pyrometer Leadwires
Type "K" Thermocouple
(such as R650)
Install AFTER Turbocharger