Hazardous (Classified) LocationClass 1, Division 2, Group B

INTRINSICALLY SAFE APPARATUS WITH ENTITY PARAMETERS

Lcable/Rcable verification (See note 5)

OR

SIMPLE APPARATUS

Notes to Intrinsic Safety Wiring:1. The maximum unclassified location voltage, Um, is 250 V ac/dc.2. Barrier ground shall be connected to a grounding electrode ANSI/NFPA 70, Articles 504. The resistance of the ground path must be less than 1 ohm. Barrier grounding is established on the standard35mm Din Rail bonded to the ground electrode (AWG#10).3. Barriers shall not be connected any device which uses or generates internally any voltage in excess of 250Vrms or DC unless the device has been determined to adequately isolate the voltage from thebarrier.4. The installation must be in accordance with the Class 1, Division 2 wiring methods of National Electrical Code, NFPA 70, Articles 504 and 505, and ANSI/ISA-RP12.06.01, Canadian Electrical Code C22.1or in accordance with the authority having the jurisdiction.5. Simple Apparatus: An electrical component or combination of components of simple construction with well defined electrical parameters that does not generate more than 1.5 volts, 100 milliamps,and 25 milliwatts, or a passive component that does not dissipate more than 1.3 watts.6. Li may be greater than La and the cable length restrictions due to cable inductance (Lcable) can be ignored if both of the following conditions are met:

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TANK# 1

TANK#2

TANK#3

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