J.P. Instruments EDM 730 Instrument Installation Manual - Manual (Page 7)

FAA APPROVED INSTALLATION MANUAL FOR THE EGT-701 Report 103
INSTALLING THE EGT-701 SCANNER® 1/20/09
Rev-E Page 7 of 30
8) Oil Pressure Sensor Installation
Use the J3 connector harness 790420 labeled OIL-P for a VDO pressure sensor (shown in diagram below). Oil
pressure sensor mounts using an aluminum clamp MS21919. Mount to firewall or tie wrap to existing wiring bundle.
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. An alternate method of installation is to install a T-fitting (not supplied) in the aircraft’s oil pressure gage line
in the cockpit near the oil pressure gage. Their is no polarity on the oil pressure transducer wires.
9) OUTSIDE AIR TEMPERATURE PROBE, OAT
Install the OAT probe, P/N 400510 in the airframe manufactures recommended location. If this is not possible, it is
recommended that the OAT probe be placed in clean airflow such as in a cabin air scoop or below the underside of
the wing away from engine heat or exhaust. In this case it is recommended that the installation be done similar to the
antenna installation instructions of AC 43.12-2a "Acceptable Methods, Techniques and Practices". The outside
aluminum tube is used to both hold the probe in place and shield it from radiated heat. OAT option is displayed as an
independent digital temperature like "75 OAT". Be sure that when testing the OAT it is not in direct sun and the engine
is running.
washer
aircraft sheet metal
washer
probe
shield tube
used to secure
probe
flexible tube 6 inch (AEROQUIP 303)
AN-910-1D
1/8 NPT coupling
AN-816-4D
1/8 NPT to flared MIL-H-8794 hose
MS-24587 fitting (AEROQUIP 491, 2 req'd)
to engine
fitting
DO NOT MOUNT SENSOR DIRECTLY TO ENGINE
Transducer supplied by JPI, all other hardware supplied by
installer.
pressure
sensor
mount using
MS21919 -DG24
1.5 inch clamp
PN 30601