Capacitance Pressure Transducer
Capacitance Pressure Transmitter is the result of a combination of self-developed anti-jamming, high stability digital circuits and the introduction of foreign Single crystal resonant silicon sensor technology. Its performance much better than our domestic metal capacitive sensor technology transmitter, and main show in the field zero stability and long-term operation stability, and rapid response.
Single crystal resonant silicon sensor technology
Super performance, use to measure pressure, differential pressure and temperature..
Standard 4¡«20mA,RS-485 communication interface
Support upgrade of basic scene control technique
Little temperature effect
Little static effect
Overload can reach 2 times
Compatible with 316LSS,noncorrosive liquids.
Shipping and aviation industry.
Hydraulic pressure and pneumatic control system
Apply in Petroleum industry, chemical industry, electric power, metallurgy, hydrology etc process control.
Analog output: two –wire 4-20mADC
Digital output: two –wire 4-20mADC and superimposing variable digital signal accord with HART
supply voltage 24VDC
Max load resistor Rmax in loop decided by the supply voltage, see the below drawing. HART PROTOCOL require the load resistor not less than 250Ω,not more than 600Ω
Max. 1.5Km, multi-address communication can connect 15 smart transmitters Max.
4 digital display,5 digit LCD display, pointer type.
ExiaIICT5;explosion suppression type
Can positive transfer or negative transfer, but can not overstep the utmost value
ambient temperature -40-85¡æ(When choose LCD : -20-70¡æ)
Static pressure and single side overpressure
3.45KPa(absolute pressure)¡«31.2MPa£¨gauge pressure£©
less than 5 sec.
Less than 0.16cm3
If occur malfunction, automatism diagnose function will output 3.9 or 21.0mA
To avoid the datas are modified random, can utilize software or protect switch lock the record data
zero is the lower limit and not offset, temperature 25¡æ, Atmospheric pressure, 24VDC power,silicon oil , diaphragm 316L, data adjust range the same as the up and lower limit of the range.
Static pressure influence
zero error 0.1URL/6.9Mpa; Zero error 0.1URL/1.7MPa
withstand frequency 200Hz at any direction, arouse error ±0.05%URL
no load influence
Mounting position influence
about 250Pa zero offset, can be eliminate via calibration, no range influence.
RF interference influence
drift is ±0.1%span in the condition of 30-1000MHz frequency and the most field intensity 10V/m
Diaphragm: 316LSS, Hastelloy , Monel or Tantalum
Vent /drain valve:316LSS, Hastelloy , Monel or Tantalum
Flange and joint : steel coated with cadmiumed ,galvanized steel, 316L SS, Hastelloy
O-ring: Fluorin rubber
Filled: silicon oil
Bolt: galvanized steel
Electric housing: low copper and aluminium alloy or SS316
Cover O-ring: NBR
Coating: polyester epoxy resin
Flange connection: 1/4-18NPT
Joint pressure port£º1/2-14NPT
Lead tube connection: M20X1.5¡¢1/2-14NPT
5kg£¨no include option parts£©