| All modern heat release measurements
use oxygen depletion calorimetry. The analysis and instrumentation used
for quantitative oxygen, carbon monoxide and carbon dioxide measurements
for both large and small calorimetry have the same specification. Thus a
single set of instrumentation can be used for both tests. By housing the
common gas analysis instrumentation and higher capacity pumps and gas handling
filtration required for Large Scale Calorimeters (e.g. ISO 9705) into a
separate rack from the main Cone Calorimeter housing FTT has developed the
Dual Analysis Calorimeter 2000. The instrumentation can then conveniently
be used both for Cone and Large Scale Calorimeters. When used with the Cone Calorimeter, the analysis rack is elegantly located with the Cone Calorimeter unit. When instrumentation is required for the Large Scale Calorimeter this section is quickly de-coupled from the Cone frame and transferred, on the factory-fitted castors, to the new location for equally quick connection to power and sampling lines of the larger calorimeter. The FTT Dual Calorimeter meets all National and International Standards (including ISO 5660, ASTM E 1354, ASTM E 1474, ASTM E 1740, ASTM F 1550, ASTM D 6113, NFPA 264, CAN ULC 135 and BS 476 Part 15) and has all the advantages of the conventional single purpose FTT Cone Calorimeter. |
| LARGE
SCALE OXYGEN DEPLETION CALORIMETRY FTT build and supply the room hood rigs complete with the appropriate instrumentation package or supply instrumentation to clients wishing to upgrade existing facilities or with a wish to build their own rigs. In the latter cases FTT supply a customised instrument rack containing all stipulated analyzers and a duct insert containing probes for gas sampling and air velocity measurement along with smoke analysis equipment. Most dynamic fire testing rigs can be instrumented to measure heat released from products burnt in them. |
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| Duct insert for ductwork
of room hood rig showing laser smoke unit and sampling ports. |
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Instrument panel from an oxygen
depletion calorimeter. |
Schematic of ISO or Nordtest rig.
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Bidirectional sensor probe used in
larger rigs for gas velocity measurements. Orifice plates are better in smaller ducts. |
Laser smoke system on optical
bench. Can be supplied any path length (0.001-5m) with a variety of customised housings. White light systems also available. |
Elevation of duct sub assembly with
gas sampling probe, bidirectional probe, and laser smoke analysis unit in position. |
