Spectrex Quasar 900 Open-Path Gas Detection System - Manual (Page 19)

TM 888200 Rev (I), January 2014
Product Certification 7
The handheld unit can be used:
1 For on-site function programming and set up changes to the Detector.
2 During installation, the handheld unit will display all the detector’s
parameters and confirm that the installation has been completed
successfully. It is also required to perform the necessary Zero
calibration function
3 For Maintenance and Trouble Shooting – The handheld unit will provide
recommendation of maintenance action to overcome and optimize the
Detector’s performance.
For more details, refer to Manual TM 799060.
2.3.11 Modbus RS-485
For more advanced communications, the Quasar 900 has a RS-485 Modbus-
compatible output that provides data communication from a network (up to
247 Detectors) to a host computer or universal controller for central
monitoring. This feature enables easy maintenance, local and remote
diagnostic tools.
2.3.12 Tilt Mount
The new design stainless steel tilt mount provides a smaller installation
footprint that can conform to limited space constraints, while the sturdy
construction maintains alignment even in constant vibration. The improved
‘X’ and ‘Y’ axis worm-gear adjustments provide quick and easy alignment for
installation and maintenance procedures.
2.4 Product Certification
The open path Quasar 900 is approved for the following certification:
 ATEX, IECEx, page 7
 FM / FMC, page 8
 SIL-2, page 8
 Functional Test, page 8
2.4.1 ATEX, IECEx
The Quasar 900 is ATEX approved per SIRA 12ATEX1212X and IECEx per
IECEx SIR 12.0086X per:
 ATEX Ex II 2 GD
Ex d e ib [ib Gb] IIB+H2 T4 Gb
Ex tb IIIC T135°C Db IP66
 T Ambient –55°C to +65°C
This product is suitable to use in hazardous zones 1 and 2 with IIB+H2
group vapors present.