Ashcroft t5500e Manual de instruções de instalação e manutenção - Página 8
Procurar online ou descarregar pdf Manual de instruções de instalação e manutenção para Instrumentos de medição Ashcroft t5500e. Ashcroft t5500e 11 páginas. Bourdon tube pressure gauge with integrated transmitter
Imprimir página
Safety notice: Only mount using the correct open-jawed wrench, and do not twist the device itself.
G ¼ B, G ½ B
1. Pressure connection
2. Gasket DIN 16258
7.3.2 Electrical connection
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.
Power supply to be provided is 12-30 VDC
Maximum loop resistance for 4 ... 20 mA: ≤ (UB – 9,5 V) / 0,02 A
For minimum noise susceptibility, avoid running the transducer's cable in a conduit that contains high current AC
power cables. Where possible avoid running the cable near inductive equipment.
Units with shielded cable electrical termination, connect the drain wire to the guard terminal on the read out device
or measuring instrument, if available. In all other cases connect to the ground or to the power supply negative
terminal.
Wiring Diagrams:
7.4 Starting up
The precondition for start-up is proper installation of all electrical feed lines and metering pipes. All connecting lines
must be laid such that no mechanical forces can act on the device.
Before start-up, the seal on the pressurized connection line must be checked.
7.4.1 Zero point adjustment for pressure gauge
The pressure gauges are supplied calibrated ex works, so that as a rule there is no need for calibration works at the
installation point.
For devices with Micrometer pointer (see. order code), zero point adjustment on site is possible. For this, proceed as
follows:
Page 8 of 11
Other parallel threads
1. Pressure connection
2. Gasket (USIT)