Capacitive differential pressure transmitter with hart

Range code

Range

Measuring range

Min.

Max.

4

0.374KPa

37.4KPa

-37.4~37.4KPa

5

1.868KPa

186.8KPa

-186.8~186.8KPa

6

6.9KPa

690KPa

-690~690KPa

7

20.68KPa

2068KPa

-2068~2068KPa

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°C(When choose LCD : -20-70°C)

Medium temperature

-40~104°C

Static pressure and single side overpressure

3.45KPa(absolute pressure)~31.2MPa(gauge pressure)

Relative humidity

5~98%RH

Run-up time

less than 5 sec.

Capability change

Less than 0.16cm3

Damp adjust

0.20~25 second

Malfunction alarming

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

Configuration protection

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

Reference condition

zero is the lower limit and not offset, temperature 25°C, 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%URL+0.15%FS+200Pa)20°C

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

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 port:1/2-14NPT

Electrical connection

Lead tube connection: M20X1.5,1/2-14NPT

Weight

3.6kg(no include option parts)