5

Determining a Location

Figure 4 T-Series sensor ambient and process temperature limits Hazardous area approvals may impose additional limits on ambient and process temperature. For the ATEX “T” rating, refer to the ATEX documentation shipped with the sensor or available on the Micro Motion web site at www.micromotion.com. UL and CSA ambient temperature limits are listed in Table1.Table 1 UL and CSA ambient temperature limits
Electronics °F °C
UL Sensor with junction box +104 maximum +40 maximum
Sensor with core processor or integral
transmitter
–40 to +140 –40 to +60
CSA Sensor with junction box +140 maximum +60 maximum
Sensor with integral Model 1700/2700
transmitter
–40 to +140 –40 to +60
–60 (–51)
–20 (–29)
–40 (–40)
20 (7)
60 (16)
100 (38)
140 (60)
–60 (–51)
–20 (–29)
20 (7)
60 (16)
100 (38)
140 (60)
200 (93)
240 (116)
280 (138)
320 (160)
300 (149)
125.5
(52)
122
(50)
Mount transmitter remotely; use junction box
Below –40°F (–40 °C),
mount transmitter remotely;
use junction box
* When ambient temperature is below –40°F (–40 °C), a core processor must be heated to bring its local
ambient temperature to between –40°F (–40 °C) and +140 °F (+60 °C). Long-term storage of
electronics at ambient temperatures below –40°F (–40 °C) is not recommended.
* For the purposes of selecting electronics options, this graph should be used only as a general guide. If
your process conditions are close to the gray areas, it may be inappropriate to use electronics options
other than a junction box. Consult with your Micro Motion representative.
Ambient temperature of core processor or transmitter in °F (°C)
Maximum process temperature in °F (°C)