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The important products from PTFE thermal decomposition are:
At Temperatures Greater Than
400°C/752°F
430°C/806°F
440°C/824°F
475°C/887°F
500°C/932°F
* May also be produced if PTFE tape is kept at 400°C/752°F for an extended time.
Health Hazard Data
• Inhalation of decomposition products from PTFE can produce 'polymer fume
fever', which has symptoms similar to influenza.
• There is no risk from ingestion or skin contact.
• There are no medical conditions generally aggravated by exposure to PTFE.
Emergency and First-aid Procedures
• If there is accidental contact with PTFE fumes, remove the person
concerned to clean air.
• Self-contained breathing apparatus and protective clothing should be worn
when fire-fighting.
Thermocouple Probes for Food Applications
Type T thermocouple probes having a hot junction combining copper and
constantan are the standard probes for use in the food industry. In some cases,
type K (combining nickel–chromium alloy and nickel–aluminum alloy) are
preferred.
Thermocouples are supplied with water-tight, O-ring-sealed connectors to
provide IP67 rating for the logger and to guarantee reliability and accuracy in the
most hostile of environments (steam, water, condensation, etc.). Cable lengths
can be customized to match the exact requirements of a given process.
Probes are available for the MultiPaq21 logger in a variety of types, as shown
below.
FOOD TR ACK ER
Product
See note*
Tetrafluoroethylene
Hexafluoropropylene
Perfluoroisobutylene
Carbonyl fluoride*, which, in moist air,
converts to the acid gas hydrogen fluoride
29
Hardware
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