Installation manual

Environmental limits for F-Series sensorsFigure 1-1:
Maximum process temperature in °F (°C)
176 (80)
140 (60)
104 (40)
68 (20)
32 (0)
–4 (–20)
–40 (–40)
–76 (–60)
–112 (–80)
–148 (–100)
–148
(–100)
–76
(–60)
–4
(–20)
140
(60)
212
(100)
284
(140)
356
(180)
140
(60)
81 (27)
Ambient temperature of core processor or
transmitter in °F (°C)
Gray area = Mount transmitter remotely (use junction box)
68
(20)
400
(204)
Notes
• High-temperature sensors:
• Ambient temperature: –40 to +140 °F (–40 to +60 °C)
• Process temperature: –50 to +662 °F (–40 to +350 °C)
• When ambient temperature is below –40 °F (–40 °C), a core processor or transmitter 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.
• Temperature limits may be further restricted by hazardous area approvals. Refer to the hazardous
area approvals documentation shipped with the sensor or available from the Micro Motion web site
(www.micromotion.com).
• The extended-electronics option allows the sensor case to be insulated without covering the
transmitter, core processor, or junction box, but does not affect temperature ratings.
• For F300 sensors, the difference between the process fluid temperature and the average
temperature of the case must be less than 120 °F (66 °C).
• 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.
Planning
Installation Manual 3