Orange RX telemetry - temperature sensor

[Ignatjev]

Lately I`ve been more than happy with Orange RX (V2) DSMX. Have zero problems, shows telemetry data on my Spektrum DX8 (first gen) with low voltage alarm. Anybody uses it on nitro for temp readings and high temp alarm?
I`m asking because it`s only up to 120C - 248 degrees Fahrenheit
And how to attach the sensor to motor? What thermal glue should I use?
Thanks !

[ticedoff8]

Originally Posted by Ignatjev

Lately I`ve been more than happy with Orange RX (V2) DSMX. Have zero problems, shows telemetry data on my Spektrum DX8 (first gen) with low voltage alarm. Anybody uses it on nitro for temp readings and high temp alarm?
I`m asking because it`s only up to 120C - 248 degrees Fahrenheit
And how to attach the sensor to motor? What thermal glue should I use?
Thanks !

I don't use the Orange RX.
I use Spektrum TM1000 and the AR8010T

The most accurate place to measure temperature is next to the glowplug on the head
It is also the hottest.
My readings are 280F on my YS 120SR-X.
But on my YS 60SR, they rarely get above 250F

For you, the trick is to find a place on the cylinder that is cooler but consistent. Most people will place the sensor near the exhaust port.
But, consistency is the key.

The goal is find the temperature that matches a known "good" setup and placement of the sensor.

After 5 or 6 flights with everything being normal, then you have a baseline for any future changes that might come up due to a worn motor, a change in fuel, or a clogged needle.
That baseline becomes the alarm setting you will use in the DX8.

I use Arctic Silver Thermal Adhesive/Glue/Epoxy to glue the sensors in place
http://www.ebay.com/itm/Arctic-Silve...gAAOSwn7JYEz~8

[Kgnx]

Originally Posted by ticedoff8

I don't use the Orange RX.
I use Spektrum TM1000 and the AR8010T

The most accurate place to measure temperature is next to the glowplug on the head
It is also the hottest.
My readings are 280F on my YS 120SR-X.
But on my YS 60SR, they rarely get above 250F

For you, the trick is to find a place on the cylinder that is cooler but consistent. Most people will place the sensor near the exhaust port.
But, consistency is the key.

The goal is find the temperature that matches a known "good" setup and placement of the sensor.

After 5 or 6 flights with everything being normal, then you have a baseline for any future changes that might come up due to a worn motor, a change in fuel, or a clogged needle.
That baseline becomes the alarm setting you will use in the DX8.

I use Arctic Silver Thermal Adhesive/Glue/Epoxy to glue the sensors in place
Arctic Silver Thermal Adhesive/Glue/Epoxy 7g (2x 3.5g Tubes) (ASTA-7G) Artic

I've been using tm1000 with spektrum sats. but sometimes temp goes low or high. I place the temp sensor between motor body and carburator.Tigthened from back of the motor, but I dont like it's precision.
Can you post a photo of your sensor position?
As far as I know there is no calibration process for temperature readings.

[Ignatjev]

Thanks ticedoff !
What sensor you use, this shall be glued or could it be wrapped around cylinder:
Aircraft Telemetry Temperature Sensor SPMA9571

[ticedoff8]

Originally Posted by Ignatjev

Thanks ticedoff !
What sensor you use, this shall be glued or could it be wrapped around cylinder:
Aircraft Telemetry Temperature Sensor SPMA9571

I use the sensor in your link.
That is the standard TM1000 temp sensor.
The actual ceramic sensor is centered under the red heat shrink tubing.
It is not too fragile - but it can be broken.

kazanci:
The issue you are describing seems like the senor is not staying in contact with the metal. When it lifts up, it cools.
The Arctic Silver epoxy will bond it in place permanently. That is a "plus" and a "minus"
Plus: There is no chance it will lift up
Minus: It is permanent and will most likely break the sensor if you try to remove it.

[Dawiev]

I wrap it around the cylinder. Then where the black wires cross, on the opposite side to the sensor, I use a blop Automotive Goop. It stays in place and can easily be removed.

You can also use some heatshrink down to the cross point.