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5 Installation and maintenance
The EK220 is suitable for wall mounting and for installation on a gas meter. The holes for
wall mounting become accessible after opening the housing cover. For installation on a
meter a mounting bracket is required.
The installation and first test can occur without the presence of a calibration official, be-
cause all relevant areas are secured by adhesive labels.
5.1
Installation procedure
The following steps must be carried out to install the device:
1. Mounting of the EK220 on the gas meter, on a bracket or on the wall.
2. Connection of the pulse transmitter, pressure line and insertion of the temperature se n-
sor in the thermowell.
3. If required, connection of the following equipment to the power supply input, serial inter-
face or pulse/signal outputs.
F
If the EK220 is used in a hazardous area (Zone 1), then only intrinsically safe electri-
cal circuits of certificated "associated operating equipment " must be connected. Their
certificated electrical data must conform to the requirements stated in the certificate
of conformance for the EK220.
4. With unused union screw joints the insertion seal must be replaced by one the enclosed
blind insertion seals.
5. Sealing of the device by the weights and measures office or test station according to the
seal layout.
6. Close the housing.
F
When closing the housing, make sure that no cables are pinched.
© Elster GmbH
Volume Conversion Device EK220
91
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