Flammable Sensors; The 4 / 20 Ma Output - Teledyne Everywhereyoulook MX 62 User Manual

WB Interface
WB/4-20mA CONVERTER
USER MANUAL

Flammable sensors

• Only "Wheatstone bridge" type flammable sensors can be connected to the WB
interface. The following sensor types may be used: CAPTEX, CEX 300, OLC20, OLC50,
etc
• Terminals C1, C2 and C3 of the WB interface and the sensors will be connected facing
each other as shown in Figure 2.
• The maximum loop resistance is 16 ohms.
Example: the maximum distance between the WB interface and the sensors will be 500 m with
1.5 mm² section conductors.

The 4 / 20 mA output

The 4/20 mA output of each measuring channel will be able to be connected to an
appropriate central measuring unit.
The maximum impedance of the current loop will be 500 ohms.
The WB interface is linked to the central unit using a shielded cable with two active
conductors. The shielding will be grounded at one end only.
The connections will be made as shown in Figure 3.
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Figure 3
NPMWBEN
Revision A.0