Electrical Installation - Honeywell Searchline Excel Open-Path Technical Handbook

MAN0530 Issue 09 October 03
2104M0506

4.5 ELECTRICAL INSTALLATION

CENELEC
TX/RX Configuration
CSA/FM/UL TX/RX Configuration
4.5.1 Electrical Installation – Precautions and Recommendations
Consult the recommendations for the Open-Path Excel in section 3.3.1 as they also apply to
the Cross-Duct Excel.
Because the Transmitter and Receiver operate from a common supply, the field cabling
requirements are different:
For Cross-Duct Excel, the field cabling conductors should have sufficient cross sectional area
to ensure that the minimum supply voltage applied to the gas detector is 18V at a current of
720mA. This corresponds to a maximum round loop impedance of 8.3 ohms for a nominal 24V
system supply.
4. CROSS-DUCT EXCEL
UL TX/RX Configuration
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Searchline Excel
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