Environment; Ambient Temperature Range; Ambient Temperature Limits - Endress+Hauser Micropilot FMR60B Technical Information

Ambient temperature range

Ambient temperature limits

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If process temperatures are high, the device should be included in the usual container insulation
system (2) to prevent the electronics from heating as a result of thermal radiation or convection. The
rib structure (1) must not be insulated.

Environment

The following values apply up to a process temperature of +85 °C (+185 °F). At higher process
temperatures, the permitted ambient temperature is reduced.
• Without LCD display:
• Standard: –40 to +85 °C (–40 to +185 °F)
• Optionally available: –50 to +85 °C (–58 to +185 °F) with restricted operating life and
performance
• Optionally available: –60 to +85 °C (–76 to +185 °F) with restricted operating life and
performance; below –50 °C (–58 °F): devices can be damaged permanently
• With LCD display: –40 to +85 °C (–40 to +185 °F) with limitations in optical properties such as
display speed and contrast. Can be used without limitations up to –20 to +60 °C (–4 to +140 °F)
If operating outdoors in strong sunlight:
• Mount the device in the shade.
• Avoid direct sunlight, particularly in warm climatic regions.
• Use a weather protection cover (see accessories).
The permitted ambient temperature (T
temperature range.
In the event of temperature (T
is reduced.
The following information only takes functional aspects into consideration. Additional
restrictions may apply for certified device versions.
Plastic housing material
Order option; process temperature range: –20 to +150 °C (–4 to +302 °F)
 8 Plastic housing material; process temperature range: –20 to +150 °C (–4 to +302 °F)
P1 = T : –20 °C (–4 °F) | T
p
P2 = T : +76 °C (+169 °F) | T
p
P3 = T : +150 °C (+302 °F) | T
p
P4 = T : +150 °C (+302 °F) | T
p
P5 = T : –20 °C (–4 °F) | T
p
In the case of devices with plastic housings and CSA C/US approval, the selected process
temperature range of –20 to +150 °C (–4 to +302 °F) is limited to
0 to +150 °C (+32 to +302 °F).
Process temperature range: 0 to +150 °C (+32 to +302 °F), with CSA C/US approval
) depends on the selected housing material and process
a
) at the process connection, the permitted ambient temperature (T
p
T
a
P1 P2
P5
: +76 °C (+169 °F)
a
: +76 °C (+169 °F)
a
: +25 °C (+77 °F)
a
: –20 °C (–4 °F)
a
: –20 °C (–4 °F)
a
Micropilot FMR60B HART
P3
T
p
P4
Endress+Hauser
)
a
A0032024