Fixed and flame
Searchline Excel, Excel Plus and Excel Edge
Open path detectors monitor a line rather than a point. Instead of waiting for gas to reach a sensor, an infrared beam is projected across the area and any gas cloud crossing that beam is detected — which is the right principle for perimeters, pipe racks and loading areas.
What it is
Purpose and use
Honeywell states a dynamic monitoring range of 200 m for the established Searchline Excel. The next generation covers two ranges: Excel Plus from 2 to 120 m for medium distances, and Excel Edge from 60 to 330 m for long distances. Both come as standard with HART® over the 4-20 mA analogue output, Modbus and Bluetooth®.
The practical value of an open path installation is coverage per device. A single beam across a loading rack replaces a row of point detectors and still catches a cloud that drifts between them. The practical risk is alignment: a beam that is knocked out of adjustment stops protecting, which is why commissioning, mechanical stability of the mounting and a maintenance routine matter more here than with a point detector.
Technical description
- Open path infrared detection of flammable gas across a beam path
- Searchline Excel: 200 m dynamic monitoring range
- Searchline Excel Plus: medium range from 2 to 120 m
- Searchline Excel Edge: long range from 60 to 330 m
- Excel Plus and Excel Edge: HART® over 4-20 mA, Modbus and Bluetooth® as standard
Stated according to the current manufacturer documentation. Binding data for a specific configuration is confirmed with the quotation.
Application
Where it is used
- Perimeter monitoring of process units and tank farms
- Pipe racks and pipe bridges
- Loading and unloading areas for road and rail tankers
- Open plant areas where a point detector would be bypassed by a drifting cloud
Accessories and spare parts
- Mounting frames and alignment accessories
- Weather protection for the transmitter and receiver
- Commissioning and alignment service
Service by VERTEX GmbH
What we deliver around this product
We design the beam paths, verify that the mounting structures are mechanically stable enough to hold alignment, install and align the units, test the alarm chain, and include the alignment check in the scheduled maintenance so that a misaligned beam does not become an unnoticed gap in the coverage.
Honeywell and the product names on this page are trademarks of Honeywell International Inc. VERTEX GmbH is an independent supplier and service provider in Krefeld, Germany.
FAQ
Questions about Searchline Excel, Excel Plus and Excel Edge
Open path or point detection?
Point detection where the release point is known and the gas will accumulate — a pump seal, a compressor, a sump. Open path where the release could be anywhere along a line and the atmosphere is open enough for a cloud to drift past a point detector. Large installations normally use both.
Which Searchline Excel version for which distance?
Excel Plus covers 2 to 120 m, Excel Edge covers 60 to 330 m, and the established Searchline Excel has a 200 m dynamic range. The path length is only part of the decision — the mounting structure, the expected obstruction of the beam and the ambient conditions decide the rest.
Enquiry
Send us your specification
Send us your requests with technical specifications to receive a prompt reply from our industry specialists. For gas detection, add the gases and the zone classification.
Or by email: purchasing@vertex-group.de