IM 01E21A03-01EN
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  <2. Explosion Protection Type>
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2.4   Operation
•  Take care not to generate mechanical spark when 
access to the product and peripheral devices in 
hazardous locations.
•  Take care the following warning marking when 
the opening the cover.
Integral Flowmeter and Remote Transmitter
•  Take care the following warning marking “AFTER 
DE-ENERGIZING, DELAY 20 MINUTES 
BEFORE OPENING”.
Remote Sensor
•  Take care the following warning marking “OPEN 
CIRCUIT BEFORE REMOVING COVER”.
2.5   Maintenance and Repair
Only personnel authorized by Yokogawa Electric 
Corporation can repair the equipment 
2.6   Specic Condition of Use
•  In the case the electrodes and/or grounding rings 
are made of titanium, the sensor should be kept 
away from impacts and frictions in hazardous 
locations.
•  Electrostatic charges on the non-metallic 
parts(excluding glass parts) or coated parts of the 
product shall be avoided.
•  The applicable temperature class, ambient 
temperature range and process temperature 
range of the product are shown in Table 2.1 and 
Table 2.2.
•  From the sufety point of view the intrinsically 
safe circuit of product shall  be assumed to be 
connected to ground.
•  The product shall be installed as over-voltage 
category II.
•  Remote sensor, for connection to a  Remote 
Transmitter authorized by Yokogawa Electric 
Corporation.