Testo 0390 0070 - a short guide and how to replace it

Looking for a replacement oxygen sensor for your flue gas analyzer? Check out the Testo 0390 0070 model and learn how to install it with our simple instructions.

Of course, there are many other O2 oxygen sensors but today let’s talk about the 0390 0070.

Here are the digital flue gas analyzers which are suited for Testo 0390 0070:

- Testo 300 M
- Testo 300 XL
- Testo 300 M-I
- Testo 300 XL-I
- Testo 300 XXL
- Testo 335
- Testo 350 M
- Testo 350 XL

Other specifications:

Package Dimensions: 41.9 x 24.1 x 14.8 cm
Item Weight: 30 g
Measuring range: 0 - 25 vol.%

So, why do you need an O2 sensor?

It’s for measuring oxygen levels remaining in the flue exhaust gas. You need a tool called a flue gas analyzer (combustion analyzer). There are many different instruments on the market but nearly all of them include an O2 oxygen sensor like the 0390 0070.

That’s why you need an oxygen sensor.

Good news is that it’s pre-calibrated too so you won’t need to calibrate yourself. Simply plug in the sensor and you are all set.

Okay, so how to replace a faulty sensor?

It’s not too difficult to change the O2 sensor for your flue gas analyzer. You'll be able to replace the faulty sensor with ease and get back to accurate measurements in no time.

To ensure a seamless replacement process, please follow these simple steps:

1. Switch off the measuring instrument.
2. Carefully place the instrument on its front.
3. Unscrew and lift up the service cover.
4. Disconnect the hose connections from the faulty sensor/bridge.
5. Remove the old sensor/bridge from its slot.
6. Install the new sensor/bridge securely in the designated slot.
7. Push the hose connections onto the new sensor/bridge.
8. Refit and close the service cover.

Remember, after replacing an O2 sensor, allow a 60-minute equalization period before using the instrument again for accurate readings.

If you still have questions, please watch this short video on Youtube to clear any remaining confusion.

Here’s the video: https://www.youtube.com/watch?v=1gCsyZ_r1Nc&list=LL&index=1

Meanwhile, if you need to purchase a brand new Testo 0390 0070 oxygen sensor then you can easily do it by clicking this link to go to our webstore - click here!

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