Ashcroft P6500 Інструкція з монтажу та обслуговування - Сторінка 6
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7 Assembly/Installation
7.1 Safety
To ensure safe working during installation and servicing, suitable shut-off valves must be installed in the plant (see 5.4
Accessories), enabling the device:
To be depressurized or taken out of operation;
To be disconnected from the mains supply for repair or checks within the relevant plant;
Or to enable function tests of the device to be performed "on site".
During the works to mount/install the gauge, the plant must be protected against being switched back on.
7.2 Preparations (requirements for the installation location)
A check on suitability of the device for the medium to be measured, the scope of the measurement range and of
the protection against special conditions such as vibrations, pulsations and pressure spikes.
A bracket must be installed to support the pressure gauge if the metering pipe is not able to provide adequate
support.
Devices with a blow-out require a minimum spacing to the rear (20 mm).
The installation location should be chosen such that the work-spaces for operating personnel are not located to
the rear of the pressure gauge.
7.3 Mounting/Installation
7.3.1 Process connection
As standard, the device is equipped for pipework mounting with a pressure connection shank pursuant to DIN EN 837-
3. The device is calibrated ex works for vertical installation.
Connection to be undertaken by authorized and qualified specialist staff only.
Use only with the mechanical process connection provided – regarding the configuration, see order code on the
device type label, with a matching threaded seal.
When connecting the device, the pipes must be depressurized.
The pressure metering pipe must be laid inclined in such a way that, for example, for measurements of fluids no
air pockets can form, and for measurements of gases no water pockets. If the necessary incline is not achieved,
then at suitable points water separators or air separators must be installed.
The pressure metering pipe must be kept as short as possible and laid without sharp bends, to avoid the
occurrence of irritating delays.
With liquid measurement media, the pressurized connection pipe must be degassed, since any gas bubble
inclusions result in measurement error.
If water is used as the measurement medium, the device must be frost-protected.
Safety notice: Only mount using the correct open-jawed wrench, and do not twist the device itself.
7.3.2 Electrical connection
Take note of the electrical data in the EU design type test certification and the
locally-applicable regulations and guidelines for installing and operating electrical
plant in explosion risk areas (e.g. EN 60079-14, etc.).
Connection to be undertaken by authorized and qualified specialist staff only.
The electrical connection of the device is to be undertaken in accordance with
the relevant regulations of the VDE and the regulations supplied by the local
utilities company.
Disconnect the plant from the mains supply before wiring electrical
connections.
Install appropriate fuses upstream.
Page 6 of 8
Please refer to type label for
configuration of connections