Pressure transmitter for the process industry (data sheet 9721)
With HART® communication
The precision pressure transmitter PTDi is suitable for precisely measuring and monitoring differential pressures and positive pressures of liquid as well as gaseous media for pressure ranges from −7 / +7 mbar to 0 – 70 bar.
A piezoresistive resistance silicon sensor, which is separated from the medium by the membrane and a special manometric liquid, serves as measuring element. The special design of the measuring cell guarantees pressure shock and overload resistance up to 420 bar – depending on the version. The case is made of die-cast aluminum or stainless steel 3161) with degree of protection IP66. It is equipped with an integrated LC display (adjustable horizontally / vertically) and can be rotated by 0 – 340° relative to the sensor. The SIL2 version is optionally available.
The mounting of chemical seals is possible, e.g. for the petrochemical industry (see model overview 7000 and the data sheets of heading 7, e.g. data sheet 7500).
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1) optional
| model |
PTDi |
| accuracy |
≤ ±0.075 % |
| special equipment |
• HART® communication
• analogue output signal: 2-wire 4…20 mA, linear
• static pressure 250 bar (type C)
• turn-down 1:10 to 1:25
• PED conformity 2014/68/EU |
| measuring cell / sensor |
piezoresistive measuring cell
diaphragm stainless steel 316L
sealing FPM |
| output signals |
analogue: 2-wire 4…20 mA
digital: HART® communication |
| measuring range |
−7 / +7 mbar to 0 – 70 bar |
| case |
die-cast aluminum with display |
| process connection |
type C:
4 threads 1⁄4" NPT female at the cover flanges (oval flanges) made of 316L
2 plugs with vent screw 1⁄4" NPT
8 fixing threads M 10 |
