Hach-Lange LDO Sensor - Manual (Page 7)

3. Examine the connector.
• Hazardous location certified sensors have a safety lock connector. Refer to Figure 3
on page 7.
• Sensors that are not certified for hazardous locations have a quick-connect connector, without
a safety lock.
Connect the sensor in a hazardous location
D A N G E R
Explosion hazard. This equipment is suitable for use in non-hazardous locations or Class 1, Division 2,
Groups A, B, C, D Hazardous Locations with specified sensors and options when installed per the
Hazardous Location Installation Control Drawing. Always refer to the Control Drawing and applicable
electrical code regulations for proper installation instructions.
D A N G E R
Explosion hazard. Do not connect or disconnect electrical components or circuits to the equipment
unless power has been removed or the area is known to be non-hazardous.
N O T I C E
Use only a hazardous location certified sensor and cable lock in hazardous locations. The hazardous location
certified version of this product does not fulfill the requirements of the 94/9/EC Directive (ATEX Directive).
For more information, refer to Validate the sensor type on page 6 .
1. Remove the connector cap from the controller. Keep the connector cap to seal the connector
opening when the sensor is removed.
2. Connect the sensor to the controller. Refer to the controller manual for more information.
3. Close the safety lock over the connector.
4. To remove the connector safety lock, use a small flat screwdriver. Refer to
Figure 3 .
Figure 3 Connector safety lock
Connect the sensor in a non-hazardous location
Refer to Figure 4 to connect an LDO sensor to an sc controller. Refer to the specific sc controller
manual for hard-wiring instructions.
Figure 4 Connect the LDO sensor (non-hazardous location sensor shown)
English 7