Honeywell 04230-A-1001 - Transmitter

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MAN0530 Issue 15 - 07/17 Searchline Excel
2104M0506
There are three ranges of Searchline Excel gas detector. These are:
Open-Path Short Range 5 – 40m (15ft – 130ft)
Medium Range 40 – 120m (130ft – 390ft)
Long Range 120 – 200m (390ft – 650ft)
When designing an installation for Searchline Excel it is important that the correct range of the
gasdetectorforeachpathtobemonitoredisselectedandspecied.
The Transmitter and Receiver are each mounted upon robust, adjustable mounting brackets.
These brackets bolt to a mounting plate, which is designed to accommodate a variety of junction
boxes,accessoriesandmechanicalmountingcongurations.Thesmallsizeandexibilityof
Searchline Excel and its mounting arrangements are intended to make correct installation
design as simple as possible. Installation details are given in Chapter 3.
2.2 TRANSMITTER
The Searchline Excel Transmitter produces an intense, collimated infrared beam which is
producedbyaXenonarcashlamp.
Theashlamp’sinfraredoutputiscollimatedusingmirrorswhichenablesamoreuniformbeam
(no chromatic aberrations) to be produced and hence reduces alignment sensitivity. In order
topreventannoyingvisibleashes,thevisibleemissionsfromtheashlampareblockedbya
lter.
TheTransmitter’sashlampispulsedatprecisely4Hz,eachpulselastingforapproximately
one microsecond. The precise timing and extremely short duration of these pulses give the
Transmitter a very distinctive signature. This distinctive signature makes it easy for the Receiver
todistinguishSearchlineExcelTransmitterpulsesfrombothnaturalandarticialsourcesof
infrared radiation.
NOTE: THE INFRARED BEAM IS INVISIBLE AND EYE SAFE.
ThemediumandlongrangeTransmitterscontainahigherpowerashlampandlargeroptics
than the standard short range unit. The resulting infrared beam is many times brighter which
allows for a considerable increase in operating range.
2. OVERVIEW