Electronics International CGR-30P User Manual

Page 20

C. CHT Probe Installation:

CHT Probe Installation:

Most engines have threaded ports for the CHT probes just below the lower spark plug. Install the CHT
probes into these threaded ports.

D. OIL Temperature Probe Installation:

OIL Temperature Probe Installation:

Oil temperature can vary throughout an engine. Your engine’s oil temperature specifications are based on a
specific location of the oil temperature probe. If the CGR is to be used as the primary oil temperature
instrument, install the oil temperature probe (P-120) in the primary oil temperature pick up point for your
engine.

E. Carb Temp Probe Installation:

Carb Temp Probe Installation:

Remove the threaded plug located in the carburetor housing just below the throttle valve. Install the Carbu-
retor Temperature Probe (P-128) in this hole using a lock washer. Care should be taken not to over-tighten
the probe, thereby stripping the threads in the carburetor housing.

F. OAT Probe Installation:

OAT Probe Installation:

Mount the OAT Probe in an appropriate location on the aircraft, using the hardware supplied. The OAT
Probe is sensitive to air temperature changes. For this reason, do not mount the OAT probe in the path of
the cowl or engine exiting air (i.e., on the belly of the aircraft). Also, if the probe is mounted in the cowling
area near a turbo or hot cylinder head, radiant heat may influence the probe temperature. Other than these
considerations, the OAT Probe may be mounted in an air intake vent, on the side of the cowling or anywhere
else on the aircraft.

P-120 Oil Temp Probe, 5/8" -18,
Type K. Used on most engines.

(Red)

(Yel)

To EDC

Temp Input

(Middle or Bottom

Connector)

P-100 CHT Probe,
3/8" -24, Type K. Used on
most engines.

(Red)

(Yel)

To EDC

Temp Input

(Middle or Bottom

Connector)

P-128 Carb Temp / OAT Probe,
1/4" -28, Type K. Used on most
engines.

To EDC

Temp Input

(Middle Connector, Ch 8

Recommended)

P-128 Carb Temp / OAT Probe,
1/4" -28, Type K. Used on most
engines.

To EDC

Temp Input

(Middle Connector, Ch 8

Recommended)