Input type liquid level transmitter
I. product use
The TPS400 series static pressure (input) liquid level transmitter is widely used in petroleum, chemical industry, sewage treatment, urban water supply, machinery, metallurgy, electric power, scientific research and other enterprises and institutions to realize the measurement of liquid, gas or steam pressure, and is applicable to all weather conditions and the measurement and control of all kinds of corrosive liquids, gases and steam pressure in various occasions.
Two, working principle
The TPS series hydrostatic liquid level transmitter uses the static pressure generated by measuring the liquid level height to measure the liquid level. When the sensor part of the liquid level transmitter is put into the liquid medium, the process pressure converts the pressure signal to the electrical signal through the pressure sensor. After amplifying by the differential amplifier and the output amplifier, and then converting it to the input through the conversion of the V/A converter. The 4-20mA standard current output signal is linearly proportional to pressure.
Three, product characteristics
1, high accuracy and good stability. In addition to laser correction of imported original sensors, the comprehensive temperature drift and nonlinearity of the whole machine in the temperature range are compensated meticulously, so the temperature and stability are good in the temperature range.
2. Reliable mechanical protection IP65 and explosion protection iaIICT5 can be used in all kinds of harsh environments.
3. It can be used to measure viscous, crystalline and corrosive media.
4, 4-20mA standard current output signal, two-wire system, with load anti-interference ability.
5, small volume, light weight, installation, maintenance, easy to use.
Four, technical indicators
Liquid, gas, steam
Gauge pressure 0-2KPa-100MPa
Absolute pressure 0-100KPa-35MPa
Negative pressure -100kpa-1.0MPa
(liquid level) 0-10m-100m
Better than + 0.2%FS years
The rated range is 1.5-3 times.
Less than 95%
Not more than 75 ohms
Less than 0.02%/ degrees C
Full range temperature coefficient
Less than 0.02%/ degrees C
Cast aluminum alloy
Ding Qing rubber
316L stainless steel
Hester joint and waterproof joint
Contact medium connector
Process connection mode
Threaded M20*1.5, M12*1.5, 1/2NPT, 1/4NPT, G1/2, G3/8 (customized according to customer requirements), flange DN20, DN25, etc.
Five, zero and range adjustment.
The zero and range of transmitter can be adjusted continuously after opening. (Z) is a zero point potentiometer, (S) is a full range potentiometer.
Six, selection table
Static pressure (input) liquid level transmitter
Universal type, suitable for water, sewage, sea water and other weak corrosive liquid media.
Liquid material: alumina ceramics, PVC, 316L, seals: fluorine rubber.
Oil resistant type, suitable for gasoline, clear oil, heavy oil and other organic solutions.
Liquid material: alumina ceramics, 316L, seals: Ding Qing oil resistant rubber.
Acid and alkali resistant, suitable for hydrochloric acid, dilute sulfuric acid, concentrated sulfuric acid and other inorganic solutions.
Liquid material: alumina ceramics, polytetrafluoroethylene, PPR, seals: fluorine rubber.
Food hygiene, conform to GMP standard and 3-A hygiene standard.
Liquid material: ceramic diaphragm, 316L, seal: silicone rubber.
Flange mounting type
Bracket mounting type
Hygienic quick assembling clamp type
Thread mounting type
Ordinary waterproof type, protection grade IP65, without on-site display.
Intrinsically safe ExiaIICT4-CT6
With live LED digital display
Length of gas guide cable or installation height