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Pin
A
B
C
Connect a pH probe (optional)
Connect the pH probe cable to the terminal strip in the junction box of the pre-amp interface. Then,
connect the 6-pin connector of the pre-amp interface to the pH port on the instrument.
Cable requirement: Pre-amp interface (6-pin connector on one end and a junction box with terminal
strips on the other end)
To attach the pH probe to the junction box of the pre-amp interface:
1. Attach the clear wire to one or the other screw on the terminal strip with the label GLASS.
2. Attach the black wire on the shield of the cable to the REF screw on the other terminal strip.
3. Attach the red wire to the GND screw on the terminal strip.
4. Attach the green and yellow wires to the screws with the label RTD (resistance temperature
detector). The green and yellow wires can be attached to either one of the other RTD terminal
screws because there is no polarity.
Connect an ORP probe (optional)
Connect the ORP probe cable to the terminal strip in the junction box of the pre-amp interface. Then,
connect the 6-pin connector of the pre-amp interface to the ORP port on the instrument.
Cable requirement: Pre-amp interface (6-pin connector on one end and a junction box with terminal
strips on the other end)
To attach the ORP probe to the junction box of the pre-amp interface:
1. Attach the clear wire to one or the other screw on the terminal strip with the label GLASS.
2. Attach the black wire to the REF screw on the other terminal strip.
3. Attach the red wire to the GND screw on the terminal strip.
Make communications connections (optional)
Use the RS232 port and/or the Modem port on the instrument and InSight data management
software to transfer data to a personal computer (PC) or on a telephone line. As an alternative, use
the RS232 port and/or the Modem port for SCADA-Modbus
Make communications connections to the instrument, then refer to the expanded user manual on the
manufacturer's website to configure the communications settings.
Note: Not all communication options have CE approval. Refer to
approved for use in the European Union.
• RS232 port—Connect to a serial port (DB9 or DB25) on a PC that has InSight data management
software. Use an RS232 to PC cable assembly to make the connection. An optional extension
cable is available. As an alternative, use the RS232 port as a SCADA-Modbus interface.
• Modem port—Connect to a standard dial-up public telephone line or use as a SCADA-Modbus
interface. Use the modem line filter connector (2-pin connector) to make the connection. Refer to
Table
10.
Note: As an alternative, use the RJ11-style phone connector adapter for a modular connection. Refer to
Figure
6.
• 4–20 mA port—Connect to external devices, such as a chlorinator or a chart recorder. Use a
4–20 mA output cable assembly (4-pin connector on one end and tinned wire leads on the other
end) to make the connection. All the 4–20 mA outputs are on the one 4–20 mA port. Refer to
Table
11.
Note: Make sure to use an AC power converter to supply power to the instrument. Battery power does not
supply sufficient power for the 4–20 mA current loops.
16 English
Table 9 Rain gauge port wiring
Description
+12 VDC source output
—
+12 VDC pulse input
Pin
D
E
F
®
communications.
Table 1
on page 8 for instrument models that are
Description
—
—
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