Emerson CMF200A UL and CSA ambient temperature limits, Sensor models Electronics

Determining a Location

Figure 6 High-temperature and extreme high-temperature ELITE sensor ambient and process temperature limits

(°C)	176 (80)								662
									(350)
°F	140 (60)
in
transmitter	104 (40)
	68 (20)			High-temp. models
or
processor	32 (0)
				Extreme high-temp. models
	–4 (–20)
core	–40 (–40)
of
temperature	–76 (–60)
				Mount transmitter remotely; use junction box
	–112 (–80)
Ambient	–148 (–100)
	–58 (–50)	32 (0)	122 (50)	212 (100)	302 (150)	392 (200)	482 (250)	572 (300)	662 (350)	752 (400)	800 (427)	842 (450)

Maximum process temperature in °F (°C)

Notes:

1.When ambient temperature is below –40 °F (–40 °C), a core processor or Model 2400S 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.

2.Temperature limits may be further restricted by hazardous area approvals.

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. IECEx and NEPSI approvals also use the ATEX “T” rating. UL and CSA ambient temperature limits are listed in Table 1.

Table 1 UL and CSA ambient temperature limits

	Sensor models	Electronics	°F	°C
UL	All models	Junction box	+104 maximum	+40 maximum
		Core processor	–40 to +104	–40 to +40
CSA	All models	Junction box	+140 maximum	+60 maximum
		Core processor	–40 to +140	–40 to +60
	All models except CMF400	2400S transmitter	–40 to +140	–40 to +60
	CMF400	2400S transmitter	–58 to +140	–50 to +60

8 Micro Motion® ELITE® Sensors