Vortex Manual Appendix D
Issue 7 December 2009 67
APPENDICES
Product
Name
Type of Detector Typical Range/Gas
TXgard-IS+ Electrochemical.
2-wire 4-20mA sink, loop powered, local amplifier with
display. Output is proportional to the gas concentration at the
detector.
Intrinsically safe.
Various ranges.
Most toxic gases, oxygen.
TXgard Plus Electrochemical.
3-wire 4-20mA source or sink output, includes a local
amplifier and display. Output is proportional to the gas
concentration at the detector.
Flameproof.
Various ranges. Oxygen,
carbon monoxide and
hydrogen sulphide only.
Flamgard Plus Pellistor/catalytic bead.
3-wire 4-20mA source or sink output, includes a local
amplifier and display. Output is proportional to the gas
concentration at the detector.
Flameproof.
0-100% LEL.
Most flammable gases.
Nimbus Infrared.
3-wire 4-20mA source and sink output, includes a local
amplifier. Output is proportional to the gas concentration at
the detector.
Flameproof.
0-100% LEL.
Many hydrocarbon gases and
vapours.
Xgard IR Infrared.
3-wire 4-20mA source and sink output, includes a local
amplifier. Output is proportional to the gas concentration at
the detector.
Flameproof.
0-100% LEL.
Methane, butane, propane,
ethylene, ethanol, pentane,
hexane, LPG
0-2 or 0-5% CO2.
TCgard Thermal conductivity.
3-wire 4-20mA source or sink output, includes a local
amplifier. Output is proportional to the gas concentration at
the detector.
Flameproof.
0-100% vv.
Suitable for binary gases only.
Detailed Installation, Operating and Maintenance Instructions are supplied with each type of detector.
Read these instructions before connecting the detector to Vortex and applying power.
Detectors not listed may still be used with Vortex. For further details contact Crowcon.