DigitalFlow™ Multipurpose Ultrasonic Liquid Flowmeter Startup Guide (1- and 2-Channel) 47
Appendix A. CE Mark Compliance
Appendix A. CE Mark Compliance
A.1 Introduction
For CE Mark compliance, the Model DF868 flowmeter must be wired in accordance with the instructions in this
appendix.
IMPORTANT: CE Mark compliance is required only for units intended for use in EEC countries.
A.2 Wiring
The Model DF868 must be wired with the recommended cable, and all connections must be properly shielded and
grounded. Refer to Table 16 for the specific requirements.
A.3 External Grounding
For CE Mark compliance, the electronics enclosure and the transducer fixture must each have an external ground wire
attached.
Note: If the Model DF868 is wired as described in this appendix, the unit will comply with the EMC Directive
89/336/EEC.
Table 16: Wiring Modifications
Connection Cable Type Termination Modification
Transducer
RG62 a/u Add a metallic cable clamp from
the braid to the chassis ground.
Armored RG62 a/u or conduit None - grounded using a cable
gland.
Input/Output
22 AWG shielded
(e.g. Baystate #78-1197)
Terminate the shield to the
chassis ground.
Armored conduit None - grounded using a cable
gland.
Power
14 AWG, 3 conductor, shielded
(e.g. Belden #19364)
An external ground to the
chassis is required.
Armored Conduit None - grounded using a cable
gland.
Shielding
For CE compliance, power and I/O cables must be shielded. Cables
to be terminated within a cable gland at the DF868. Shielded cable
is not required when installations include metal conduit.
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