User guide

l Serial number
l Technical data
3.2 Principle of operation
IPT-1* Vers. 3.0 is a pressure transmitter for measurement of
overpressure, absolute pressure or vacuum. Measured products are
gases, vapours and liquids in measuring ranges up to 4000 bar
(400 MPa); with front-flush version also viscous liquids in measuring
ranges up to 600 bar (60 MPa).
The process press ure acts on the sensor element via the stainless
steel diaphragm. The process pressure causes a resistance change
which is converted into a corresponding output signal and outputted as
measured value.
1)
Power is supplied via the H1 Fieldbus. A two-wire cable according to
Fieldbus specification serves as carrier of both power and digital data
for multiple sensors. This cable can be operated in two versions:
l via an H1 interface card in the control system and additional power
supply
l via a Linking device
with HSE (High speed
Ethernet) and additio-
nal power supply ac-
cording to IEC 61158-2
The DD (Device Descriptions) and CFF (capability files) necessary for
planning and configuration of your FF (Foundation Fieldbus) commu-
nication network are available in the download area of the WIKA
homepage
www.wika.com under "Services". The appropriate certifi-
cates are also available there. A CD with the appropriate files and
certificates can be ordered via e-mail under
[e-mail] or by
phone from one of the WIKA agencies.
The backlight of the indicating and adjustment module is powered by
the sensor. Prerequisite is a certain level of operating voltage.
The data for power supply are specified in chapter "Technical data".
1)
Measuring ranges up to 16 bar: piezoresistive sensor element with internal
transmission liquid, with measuring ranges up to 25 bar: Strain gauge
(DMS) sensor element on the rear of the stainless steel diaphragm (dry).
Application area
Functional principle
Power supply and bus
communication
DD/CFF
8 Process pressure transmitter IPT-1* Vers. 3.0 - metalic sensor • Foundation Fieldbus
3 Product description
31545-EN-081211