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1.0 Installation and Commissioning
The pressure tapping points should be prepared in accordance with the indications given for the sok-
kets. For more details, see e.g. regulation VDE/VDI 3511 and 3512, sheet 3, also DIN 837-1/2.
Suitable for sealing are sealing washers to DIN 16258. The correct tighening torque is depending
on material and shape of the used seal. It shold not exceed 80 Nm. The mounting position should
not be subject to strong vibration and radiation heat.
The transmitters with digital display are immediately ready for service after the pressure and
electrical connections have been made.
2.0 Service and Maintenance
The transmitter with digital display described here under is maintenance free. It incorporates no
components which have to be repaired or replaced on the site. Repairs will exclusively be carried
out at the factory.
Depending on working conditions, the pressure transmiter 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 referenze for adjusting the measuring span, an adequately accurate pressure standard is required.
- For readjustment, loosen, with a left-hand rotation, the cam ring (bayonet type), and remove
from casing with the window.
- Set zero point via potentiometer „ZERO".
- Set span via potentiometer „SPAN".
- After having carried out service and maintenance work, lock tightly the instrument with the
camring (bayonet type), the window and the sealing.
2.1 Current supply
The battery, Order N°. 409420, has a service life off appro. 500 active hours. In case the display
show "lowbat" continuously, the battery has to be replaced.
2.2 Operation
After activating the key, the measured value is displayed during 70 sec.
accu case
button
cam Ring (bajonet typ)
window
Typ MExx.U.1.N100
bottom pressure entry
Typ MExx.H.1.N100
back pressure entry
Quality for the
future
3
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