Why can’t the zero point of an immersion-type level transmitter be adjusted lower?
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The liquid level transmitter model DBYG is used to measure water. The zero point drifts by 1.6 meters. Why can’t the zero point be adjusted on the zeroing knob? :o
Is it impossible to adjust at all, or can it be adjusted a little? If it can be adjusted a little, it means the zero offset is too large and exceeds the calibration range; if it cannot be adjusted at all, it indicates that the zero calibration has failed
This post was last edited by 1111111 on 2018-4-8 at 17:32. 1. “A drift of 1.6 meters at zero point” – what kind of range does this level gauge have? 2. “Can’t get it down to zero” — :lol, it’s drifting too much and in an unusual manner; it’s beyond the tuning range, so of course it can’t be tuned. 3. “Liquid level transmitter model DBYG” —— Whose gauge is this, hehehe. 4. If it’s not possible to adjust the level gauge, another approach is to modify the settings on the DCS or other higher-level control system; with a well-designed algorithm, it’s possible to achieve nearly 100% offset elimination across the entire range. 5. OP, next time you come to buy an immersion-type level transmitter from me, I’ll enclose the amplification circuit inside the probe – you won’t be able to adjust it! Bro, even if you use it for 10 years, the zero point of the level gauge won’t lose accuracy! :Lol, there’s also a zero-leakage gas collection and pressure sensing sensor with a diaphragm that is not in contact with liquid – it’s an immersion-type level gauge that is particularly suitable for use with corrosive wastewater, as well as lime slurry, mud, and mineral slurry. Everyone is welcome to give it a try and experience it – a world-class product designed in China and manufactured in China, with outstanding performance at an extremely low price
Take it out and check whether the level transmitter’s reading is drifting, by how much. Also check what the adjustment amount for the zero point drift is. It’s also possible that the zero adjustment knob is damaged, or there is a fault with the instrument itself; go through each possibility one by one
It floated 1.6m – what’s the range of the gauge?
With such large zero drift that it cannot be adjusted, it is certain the sensor is damaged; replace it.