Range modification of capacitive differential pressure transmitters
Thread Content
The previously used CECC-type capacitive differential pressure transmitter had a range of 0~10 kPa. Due to changes in system parameters, it is necessary to expand the range to 0~20 kPa. Is it possible to make this adjustment without replacing the transmitter, and if so, how? Thank you first. Last edited by marry on 2009-3-25 08:29]
Change it with a manual controller. Your range isn’t that large; it should be possible to adjust it. If it cannot be changed as shown on the handheld device, then one has to buy another transmitter: lol
Transmitters generally have a variable range ratio of around 6; as long as it does not exceed 6 times the lowest adjustable range, it can usually be adjusted.
It should be modified using an intelligent manual controller; it’s not an intelligent transmitter with a range adjustment potentiometer, and there might also be a coarse adjustment switch – give it a try.
Name, Model, Measurement Range, Maximum Operating Pressure, Accuracy Class (continuously adjustable), (static pressure) (Mpa), Micro differential pressure: CECC-2100 – 0.16～1.6 KPa, 10.5; Micro differential pressure: CECC-3100 – 0.16～1.6 KPa, 2.5; Micro differential pressure: CECC-4100 – 0.16～1.6 KPa, 4; Low differential pressure: CECC-2200 – 1～6 KPa, 10.2, 0.5; Low differential pressure: CECC-3200 – 1～6 KPa, 2.5; Low differential pressure: CECC-4200 – 1～6 KPa, 4; Low differential pressure: CECC-6200 – 1～6 KPa, 10; Medium differential pressure: CECC-4300 – 6～40 KPa, 40.2, 0.5; Medium differential pressure: CECC-6300 – 6～40 KPa, 10; Medium differential pressure: CECC-4400 – 40～250 KPa, 4; Medium differential pressure: CECC-6400 – 40～250 KPa, 10; High differential pressure: CECC-6500 – 0.16～1 KPa, 100.25, 0.5; High differential pressure: CECC-6600 – 0.4～2.5 KPa, 10; High differential pressure: CECC-6700 – 1.6～10 KPa, 10. Yours falls within the range of medium differential pressure CECC-4300 – 0～6～40 KPa; it should be possible to adjust it without the need to replace the pressure transmitter! This post was last edited by zlky2005 on 2009-3-25 08:38.]
The information upstairs is very detailed^_^ It can be modified; as long as the range can be adjusted under the maximum operating pressure, and if HART is used, then it’s:victory:
The information on the 5th floor is more detailed; please check the transmitter model, OP. If it’s CECC-670 with a high pressure difference, then it can’t be changed ； The intelligent hand controller can also be adjusted manually. Manual time adjustment requires a pressure source (which can be replaced by the height of a water column)