J.P. Instruments EDM 930 Primary Primary Installation Manual - Manual (Page 15)

FAA Approved Installation Manual for the Report No 908
EDM-900 and EDM-930 Page 15 of 50 Rev J
Primary Engine Data Management System Date 5-24-14
temperature like "125 IAT". On non-turbo engines the IAT in reality is the Carburetor temperature and displayed as
“34 CRB.”
16.2 Carburetor Probe Installation (optional)
Use the J1 connector harness 790200 and insert the yellow wire into the connector pin 5 and the red wire into pin
6. All wiring must be type K thermocouple wire. Do not splice ordinary copper wire in any temperature probe
circuits. Locate the access hole (1/4-24 thread) in the carburetor near the butterfly valve. Remove the screw plug
now in that hole and screw the CRB probe into the carburetor throat. No drilling or machining of the carburetor is
necessary.
17. Oil Temperature Probe Installation
The sensor port is a standard 5/8-18 thread for both the Continental and Lycoming engines. Probe PN 400509 is a
complete assembly using type K thermocouple wire (red/yellow). Connect the wire marked oil temperature
observing polarity to pin 1 and 2 on 790200. Wire length has no effect on the readings. Oil temperature will be
displayed as an independent temperature digital and bar-graph. Check with engine manufactures proper location
for oil temperature. Check for oil leaks before first flight.
18. Oil Pressure Sensor Installation
Use the J3 connector harness 790422 labeled OIL-P for a pressure sensor three wire i2s sensor (0-5vdc)
Oil pressure sensor mount using an aluminum clamp MS21919. Mount to firewall.
Mount the pressure sensor to the pressure line using a flexible hose and fittings (not supplied) as depicted in the
drawing below. Use aluminum clamp to mount the pressure sensor to firewall. Do not mount the sensor directly to
the engine. Connect the other end of the hose to the engine manufacturer’s recommended location for engine oil
pressure.