Chapter 1. Installation
8 DigitalFlow™ XMT868i Startup Guide
1.7.2 Wiring Transducers
Before wiring the XMT868i transducers, complete the following steps:
1. Disconnect the main power from the electronics enclosure.
2. Remove the rear cover and install all required cable clamps.
Note: For transducer frequencies below 2 MHz, the cable lengths must be within 4 in. (10 cm) of each other. If the
transducer frequency exceeds 2 MHz, the cable lengths must be within 0.5 in. (1.25 cm) of each other.
3. Locate the
CH1 transducer cables and connect them to the two CH1 transducers in the flowcell. Feed the free
ends of the cables through the selected conduit hole in the electronics enclosure.
4. If an optional lightning protector is being installed, connect it between the meter and the transducers.
5. Refer to the wiring diagram in Figure 10 on page 23 and connect the transducer cables to terminal block
J3.
Then, secure the cable clamp.
Note: The RED cable leads are the SIG(+) leads and the BLACK cable leads are the RTN(-) leads.
6. For a 2-Channel XMT868i, repeat the above steps to connect the
CH2 transducers to terminal block J4. It is not
required that both channels of a 2-Channel unit be connected.
7. If wiring of the unit has been completed, reinstall the rear cover on the enclosure and tighten the set screw.
Note: A channel must be activated before it can begin taking measurements. See Chapter 2, Initial Setup, for
instructions.
WARNING! Before connecting the transducers, take them to a safe area and discharge any static
buildup by shorting the center conductor of the transducer cables to the metal shield on the cable
connector.
WARNING! To meet CE Mark requirements, all cables must be installed as described in
Appendix A, CE Mark Compliance.
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