Electronics International OPT-1 - Manual (Page 9)

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transducer to an engine baffle or directly on the engine supported by an adapter or fitting. transducer to an engine baffle or directly on the engine supported by an adapter or fitting. transducer to an engine baffle or directly on the engine supported by an adapter or fitting. transducer to an engine baffle or directly on the engine supported by an adapter or fitting. transducer to an engine baffle or directly on the engine supported by an adapter or fitting.
Vibration can cause the adapter to break, resulting in loss of engine oil. The pressure transducer is
equipped with a 1/8" NPT male port. This port can be adapted any oil pressure line. Use only a flexible
hose and fittings suitable for aircraft use. Route a flexible oil pressure line from the primary oil pressure
pick up point to the pressure transducer and tighten all fittings. Do not use the case of the oil pres-
Do not use the case of the oil pres- Do not use the case of the oil pres- Do not use the case of the oil pres- Do not use the case of the oil pres-
sure transducer to tighten the pressure fittings. sure transducer to tighten the pressure fittings. sure transducer to tighten the pressure fittings. sure transducer to tighten the pressure fittings. sure transducer to tighten the pressure fittings.
Some Fittings you may want to consider using are shown below:
Rev: B 6/3/94 *
PT-100GA
1/8 NPT Male 1/8 NPT
Coupler
AN910-1D
#2 Stright - AN816-2D
#3 Stright - AN816-3D
#4 Stright - AN816-4D
#2 45' - MS20823-2D
#3 45' - MS20823-3D
#4 45' - MS20823-4D
#2 90' - MS20822-2D
#3 90' - MS20822-3D
#4 90' - MS20822-4D
1/8 NPT Male
Flare
Install the Oil T Install the Oil T Install the Oil T Install the Oil T Install the Oil Temperature Probe: emperature Probe: emperature Probe: emperature Probe: emperature Probe:
Replace your existing primary oil temperature probe with the probe provided in the kit. Oil tempera-
ture can vary throughout an engine. Your engine’s oil temperature specifications are based on a specific
location of the oil temperature probe. If this instrument is to be used as a primary instrument, the oil
temperature probe must be installed at the primary oil temperature pick up point. Otherwise the OPT-1
must be placard as a secondary instrument.
If the oil temperature probe must be removed on a regular basis to drain the oil, order a precision
connector for the probe and extension cable to allow for easy disconnect.
Route the Oil T Route the Oil T Route the Oil T Route the Oil T Route the Oil Temperature Extension Cable: emperature Extension Cable: emperature Extension Cable: emperature Extension Cable: emperature Extension Cable:
Route the pair of wires with the metal overbraid in the wire harness to the oil temperature probe.
When tie wrapping this cable down, be sure there is no strain or pull against the probe. Keep the probe and
cable leads away from any hot areas such as exhaust stacks or cylinder heads.
Note: Note: Note: Note: Note: A dab or grease or two drops of oil on the connector will protect it for many years. A dab or grease or two drops of oil on the connector will protect it for many years. A dab or grease or two drops of oil on the connector will protect it for many years. A dab or grease or two drops of oil on the connector will protect it for many years. A dab or grease or two drops of oil on the connector will protect it for many years.
Be sure the connectors mate properly. If the tab in the male connector gets bent, it can wedge itself
between the red nylon and metal female receptacle. This can result in an intermittent connection after
about a month or more. If the connectors are removed several times the female connector can become
loose. If this happens use a pair of needle nose pliers and tighten the metal receptacle inside the female
connector.