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Capacitance Differential Pressure Transmitter XPM3051
Pressure or differential pressure will cause changing of capacitance value, analog signal convert to digital signal via AD and then being transfered to microprocessor, processed by microprocessor then
convertted to 4~20mA analog electricity signal via DA
Product introduction

Description

Pressure or differential pressure will cause changing of capacitance value, analog signal convert to digital signal via AD and then being transfered to microprocessor, processed by microprocessor then

convertted to 420mA analog electricity signal via DA

Feature


² Super performance, use to measure pressure, differential pressure,liquid level, rate of flow.

² Accuracy: ±0.075%~±0.1%F.S

² Stability: ±0.25%

² Standard 4~20mA,RS-485 communication interface

² Support upgrade of basic scene control technique


Application


² Compatible with 316LSS,noncorrosive liquids.   


² Shipping and aviation industry.

² Hydraulic pressure and pneumatic control system

² Apply in Petroleum industry, chemical industry, electric power, metallurgy, hydrology etc process control.

Range

Range code

Range

Measuring range

Min.

Max.

4

0.374KPa

37.4KPa

-37.437.4KPa

5

1.868KPa

186.8KPa

-186.8186.8KPa

6

6.9KPa

690KPa

-690690KPa

7

20.68KPa

2068KPa

-20682068KPa

Technical Data

Output

Analog output: two –wire 4-20mADC

Digital output: two –wire 4-20mADC and superimposing variable digital signal accord with HART

Power supply

supply voltage 12.5-45VDC

Limit load

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

Communication distance

Max. 1.5Km, multi-address communication can connect 15 smart transmitters Max.

Display

4 digital display,5 digit LCD display, pointer type.

Explosion-proof

ExiaIICT5;explosion suppression type

Zero offset

Can positive transfer or negative transfer, but can not overstep the utmost value

Temperature

ambient temperature -40-85℃(When choose LCD : -20-70℃)

Medium temperature

-40104

Static pressure and single side overpressure

3.45KPa(absolute pressure)31.2MPagauge pressure

Relative humidity

598%RH

Run-up time

less than 5 sec.

Capability change

Less than 0.16cm3

Damp adjust

0.2025 second

Malfunction alarming

If occur malfunction, automatism diagnose function will output 3.9 or 21.0mA

Configuration protection

To avoid the data are modified random, can utilize software or protect switch lock the record data

 

 

Performance Data

Reference condition

zero is the lower limit and not offset, temperature 25℃, Atmospheric pressure, 24VDC power,

 silicon oil , diaphragm 316L, data adjust range the same as the up and lower limit of the range.

Accuracy

±0.075±0.1%

Stability

±0.1%URL/year

Tem. influence

±0.05%URL0.15%FS200Pa20

Static pressure influence

zero error  0.1URL/6.9Mpa; Zero error 0.1URL/1.7MPa

Vibration influence

withstand frequency 200Hz at any direction, arouse error ±0.05%URL

Power influence

0.005%/V

Load influence

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

 

Configuration parameter

wetted material

Diaphragm: 316L SS, Hastelloy , Monel or Tantalum

Vent /drain valve: 316L SS, Hastelloy , Monel or Tantalum

Flange and joint : steel coated with cadmiumed ,galvanized steel, 316L SS, Hastelloy

O-ring:  Fluorin rubber

other material

Filled: silicon oil

Bolt: galvanized steel

Electric housing: low copper and aluminium alloy.

Cover O-ring:  NBR

Coating: polyester epoxy resin

Pressure port

Flange connection: 1/4-18NPT

Joint pressure port1/2-14NPT

Electrical connection

Lead tube connection: M20X1.51/2-14NPT

Weight

3.6kgno include option parts

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