ABB SensyMaster FMT430 - Page 11

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 11
Measuring medium temperature (Ex data) for model FMT4x0-A1… in Zone 1, Zone 21
The table shows the maximum permissible measuring medium temperature as a function of ambient temperature and temperature
class. The permissible measuring medium temperature specified in Environmental and process conditions for model FMT4xx… on
page 10 must not be up-scaled!
Temperature class
Ambient temperature T
amb.
T1
T2
T3
T4
T5
T6
−
40 °C to 50 °C
(−40 °F to 122 °F)
280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
−
40 °C to 60 °C
(−40
°F to 140 °F)
280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
−
40 °C to 70 °C
(−40 °F to 158 °F)
280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
Measuring medium temperature (Ex data) for model FMT4x0-A2… in Zone 2, Zone 22
The table shows the maximum permissible measuring medium temperature as a function of ambient temperature and temperature
class. The permissible measuring medium temperature specified in Environmental and process conditions for model FMT4xx… on
page 10 must not be up-scaled!
Temperature class
Ambient temperature T
amb.
T1
T2
T3
T4
T5
T6
−
40 °C to 40 °C
(−40 °F to 104 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) 95 °C (203 °F) 80 °C (176 °F)
−
40 °C to 50 °C
(−40
°F to 122 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) 95 °C (203 °F) —
−
40 °C to 60 °C
(−40 °F to 140 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) — —
−
40 °C to 70 °C
(−40
°F to 158 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) — —