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1.0 Installation and Commissioning
The pressure tapping points should be prepared in accordance with the indications given for the sockets. For
more details, see e.g. rule VDE/VDI 3512, sheet3. Suitable for sealing are sealing washers to DIN 16258.
The correct tightening torque is depending on material and shape of the used seal. It should not exeed 80 Nm. The
mounting position should not be subject to strong vibration and radiation heat.The mounting position which the
transmitter is adjusted for, is indicated on the rating plate. If the device is installed in a different position, the zero
point may be offset. In this case, the zero point should be readjusted as described here under.The transmitters
are immediatly ready for service after the pressure and electrical connections have been made.
2.0 Wiring
Electrical connection is made by means of plug.
The vein lines of the cable must be stranded in pairs. The minus of supply voltage as well as the minus of the outlet
line in the plug are connected. The cable must be double shielded. Typ of cable: LiYCY-CY 2x2x0,25 mm²
Precise wiring scheme can be seen in the drawing. In addition, wiring details and required power supply are
given on the rating plate.
Significance of applied terminal designations:
Ub+ / Ub-
supply voltage
S+ / S-
output signal
shield / PE
cable shield/case, earth
2.1 V Signal
Output signal:
0 ... 100 mV / 4 wire-system
Power supply:
Ub = 17 ... 30 V DC
Ra ≥ 10 kΩ
Admissible load:
3.0 Service and Maintenance
The transmitter described here under is maintenance free. If incorporates no components which have to be
repaired or replaced on the site. Repairs can only be carried out at the factory.
Depending on working conditions, the pressure transmitters should be checked about once a year to ensure that
they are within their specifications and be adjusted if necessary. The calibration procedure is as follows:
- As reference for checking and adjusting the measuring span, an adequately accurate pressure standard is
required.
- Remove the screw ring for fastening the plug or cable gland.
- Set zero point with potentiometer "ZERO".
- Set span through potentiometer "SPAN".
- Lock tightly the transmitter after having finished service and maintenance work.
Quality for the
future
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