GF PORTAFLOW 330, Инструкция по эксплуатации

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Instrction manual Design and function
9
5.2.1 Connectors
Legend
Pos. Name Pos. Name
1
Battery Charger 5 LCD Display
2 4-20mA / Pulse Output 6 Keypad
3
USB Socket 7 Reset pin-hole
4 Transducer Cables
Transducer connections
The transducers are connected to two colour-coded miniature coaxial sockets located on the
top of the instrument. Using the red/blue connector cables provided, the upstream
transducer should always be connected to the RED socket and the downstream transducer to
the BLUE one for a positive flow reading. It is safe to connect or disconnect the cable while
the instrument is switched on.
USB Socket
A standard USB socket is provided to enable logged data stored in the Portaflow 330 to be
transferred to a USB memory key.
4-20mA and Pulse output connection
The 4-20mA / ‘pulse’ output cable should be connected to the green 7-pin connector on the
top of the flowmeter, as shown in Figure 1.4. A single cable that can be adapted for use for
either of these output functions is included in the Portaflow 330 kit. The ‘tails’ on the free end
of the cable must be terminated to suit the intended application.

Red – 4-20mA positive

Black – 4-20mA negative

White – Pulse output
 Green – Pulse return
 Thick Black – Cable screen
 Battery charger connection