suggested that all connections be checked for leaks after installation. This can be done by pressurizing the instrument (do not exceed 500 psig unless the Flowmeter is specifically rated for higher pressures) and applying a diluted soap solution to the flow connections rated for higher pressures) and applying a diluted soap solution to the flow connections.
2.5.Electrical Connections
If a power supply from Hastings Instruments is used, installation consists of connecting the
This
The power supply used must be capable of supplying +15VDC at 50mA and
Pins 2, B and C are all Commons and they are connected together internally with solder jumpers to ensure compatibility with legacy flow controllers. At least one of these Common pins must be connected to the Common pin on the power supply. However for new designs and for installations with long cable runs between the transducer and the power supply it is recommended that pin C be isolated from the other Common pins of the transducer and provided a separate wire to connect it to the power supply Common.
Figure 2.1
This pin carries the valve current and under conditions when the impedance of the wire connecting the transducer Common to the power supply Common is high, tying these Commons together at the transducer can create