Emerson Clarity II Instruction Manual page 19

MODEL CLARITY II
3.2.2 Sensor
The sensor cable is pre-wired to a plug that inserts into a receiving socket in the analyzer. See Figures 3-2 and
3-3 for the locations of the sockets. If you are using a single input analyzer, be sure to plug the sensor into the
SENSOR 1 receptacle. The cable also passes through a strain relief fitting. To install the cable...
1. Remove the wrenching nut from the strain relief fitting.
2. Insert the plug through the hole in the bottom of the enclosure nearest the sensor socket. Seat the fitting in the
hole.
3. Slide the wrenching nut over the cable plug and screw it onto the fitting.
4. Loosen the cable nut so the cable slides easily.
5. Insert the plug into the appropriate receptacle. To remove the plug, squeeze the release clip and pull straight
out.
6. Adjust the cable slack in the enclosure and tighten the cable nut. Be sure to allow sufficient slack to avoid plac-
ing stress on the cable and connections.
7. Plug the cable into the back of the sensor.
8. Place the sensor in either the measuring chamber or the calibration cup. The sensor must be in a dark place
when power is first appled to the analyzer.
3.2.3 Power, Alarm, and Ouput
AC wiring should be 14 gauge or greater. Provide a switch or breaker to disconnect the analyzer from the main
power supply. Install the switch or breaker near the analyzer and label it as the disconnecting device for the
analyzer.
Keep sensor and output signal wiring separate from power wiring. Do not run sensor and power wiring in the same
conduit or close together in a cable tray.
For best EMI/RFI protection use shielded output signal cable enclosed in an earth-grounded metal conduit.
Connect the shield to earth ground.
Do not apply power to the analyzer until all connections are secured and verified.
Explosion hazard. Do not disconnect equipment when a flammable or
combustible atmosphere is present.
3.2.4
The sensor cable is rated as Non-Incendive field wiring by FM and CSA.
The AC power wiring, analog output wiring, and alarm wiring (optional configuration) is not rated as Non-Incendive
and must be installed in metal conduit. Refer to the FM and CSA control drawings herein, Figures 3-4 through 3-7, for
proper installation in hazardous areas.
WARNING: RISK OF ELECTRICAL SHOCK
AC connections and grounding must be in compliance with UL
508 or local electrical code. DO NOT apply power to the analyz-
er until all electrical connections are verified and secure.
Exposure to some chemicals may degrade the sealing properties of
materials used in the following device: PN AZ8-1CH-6DSEA (Zettler
Inc.)
WARNING!
WARNING!
SECTION 3.0
WIRING
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