We present a comparison between EDM 730 and EDM 760 – both Engine Data Monitors are manufactured by JP Instruments; World leader in onboard flight instruments and aircraft engine data management systems.

JP Instrument’s aircraft engine data monitors provide the pilots with real time information for aircraft. These systems constantly monitor the health of the aircraft engine and any anomalies are instantly brought to the pilot’s attention via audio-video alarms. This leave ... Read more »

A CDT probe is used in aircraft as well as in ships. The ones used in ships are known as Conductivity, Temperature and Depth probe. It provides data on water salinity or lack thereof, it's temperature and water depth at current location.

The CDT probe used in aircraft on the other hand, is used to measure compressor discharge temperature of the aircraft compressor and is therefore installed in the engine compartment just ahead of the inter-cooler. The CDT probe kit for the aircraft usually comes accompanied with a stainless-steel clamp to be fitted around the air-port leaving the inter-cooler.

The CDT probe kit as supplied ... Read more »

Although it’s technically termed as aircraft manifold pressure monitoring, the word “pressure” in this case, is a bit of a misnomer. This is because the aircraft manifold pressure data is not about pressure but suction.

The cylinders in any aircraft engine are like a large suction pump because the cylinders are constantly sucking air into itself. The MAP sensor therefore, if anything, is reading suction not ram air pressure. So at idle power your MAP gauge might display between 10 and 12 inches when actual pressure outside is 30 inches. This means your engines are actually starving for air creating a vacuum press ... Read more »

Fuel flow transducers came to be used in aircraft around the early 70s. Vibration of an aircraft engine. It also had to meet the important FAA regulation regarding blocked rotor pressure drop which could not be more than 1.5 times the spinning rotor pressure drop. Fuel flows can be measured via a conventional rotor-based fuel measurement system or, via the more modern fuel flow transducer - a digital-technology based system. The advantage of this new technology fuel flow measurement system is that, it is impervious to pressures and therefore the data is more accurate.

The fuel flow transducer works upon a vane RPM S ... Read more »

We all know that every combustion engine (except maybe in rockets), rely on an external air source for combustion. Problem for aircraft is that, the air entering the combustion chamber may not always have the ideal temperature for a healthy combustion.

Cold air usually found at high altitudes for example, is denser than air at sea level. Cold air being denser, requires more fuel otherwise an air-fuel ratio imbalance occurs and the combustion will be erratic. If the combustion in an aircraft engine is erratic, and you know what will happen. So, when the air is colder than optimum temperature, there are two things you ... Read more »

This article provides you with relevant information to compare EDM 730 and EDM 830 aircraft engine data monitoring systems manufactured by J.P. Instruments.

EDM 730
From $1,557.00 to $3,965.00)

Features:
1. Colourful Graphics
2. Larger data display for easy reading.
3. Parameters in full colour
4. Annunciation of exceedances.
5. Less page swapping, more data per page.
6. F ... Read more »

If you are looking to upgrade your cockpit with a new EDM look no further than the EDM 830 manufactured by World leader in EDM’s – J.P. Instruments.

For the next couple of years at least, the EDM 830 is going to rule the pack because the EDM 830 through its brilliant full-colour graphical LCD display totally revolutionizes the way aircraft engines are monitored.

Despite its small size (probably the smallest aircraft EDM in the market), it easily packs more features, functionality, and information in its onto its LCD screen than any other currently available aircraft EDM on the market. The latest feature addition is the Oil pre ... Read more »

Based on the model of the magneto installed in your aircraft, there are several different models / types of RPM standard sensors for aircraft. The RPM standard sensors you select and use would therefore depend on the brand of magneto in your aircraft.

Typical RPM standard sensors (as manufactured by J P Instruments) include:

RPM Standard Sensor for pressurized BENDIX 1200 SERIES (JPI part # 10-05459)
RPM Standard Sensor for pressurized BENDIX 20 SERIES (JPI part # 10-05460)
RPM Standard Sensor for pressurized BENDIX DUAL MAG SERIES (JPI part # 10-05461)
RPM Standard Sen ... Read more »

This question comes up often enough so we decided to write on how best to install the fuel flow transducer model 201B manufactured by J.P. Instruments in an aircraft.

Orientation of the 201B fuel flow transducer:

To start off and assuming you have removed the existing fuel flow transducer, hold up the new 201B fuel flow transducer in a horizontal position with the three wires up – because this is exactly how it is to be fitted. Fitting the fuel flow transducer any other way will lead to its failure. When the fuel flow transducer is in the horizontal position, the rotor within it ... Read more »

EDM 960 manufactured by J.P. Instruments is available four, six, seven, eight and nine-cylinder aircraft engines configurations. The EDM 960 is designed to be a pilot’s personal flight engineer – one that is always working in the background and constantly watching over the aircraft engine while the pilot concentrates on flying the aircraft.

The EDM 960 actively monitors the aircraft engine four times per second and sound/ display a warning if any part of the aircraft engine does not confirm to the pre-set parameters.

Here are the specifications of the EDM 960 Twin System manufactured by J.P. Instrument ... Read more »