Product Info

Micropilot FMR60B HART
26 V. 1, Rev. 2, 26-07-2022 Endress+Hauser
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
Ambient temperature range
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).
Ambient temperature limits
The permitted ambient temperature (T
a
) depends on the selected housing material and process
temperature range.
In the event of temperature (T
p
) at the process connection, the permitted ambient temperature (T
a
)
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)
T
a
T
p
P2
P1
P3
P4
P5
A0032024
 8 Plastic housing material; process temperature range: –20 to +150 °C (–4 to +302 °F)
P1 = T
p
: –20 °C (–4 °F) | T
a
: +76 °C (+169 °F)
P2 = T
p
: +76 °C (+169 °F) | T
a
: +76 °C (+169 °F)
P3 = T
p
: +150 °C (+302 °F) | T
a
: +25 °C (+77 °F)
P4 = T
p
: +150 °C (+302 °F) | T
a
: –20 °C (–4 °F)
P5 = T
p
: –20 °C (–4 °F) | T
a
: –20 °C (–4 °F)
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