Endress+Hauser Deltabar PMD75B HART, Руководство пользователя

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Deltabar PMD75B HART Technical data
Hauser 71
15.2 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: –54 to +85 °C (–65 to +185 °F); under –50 °C (–58 °F): Ex d
measuring devices can be permanently damaged
• 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)
• Separate housing: –20 to +60 °C (–4 to +140 °F)
Devices with inert oil: minimum process and ambient temperature –20 °C (–4 °F)
Ambient temperature T
a
depending on the process temperature T
p
The process connection must be fully insulated for ambient temperatures below
–40 °C (–40 °F).
T
P
T
a
T
p
T
a
+185
+185
−22
−40
[°C]
[°F]
[°C] [°F]
− −
−
50 40
40
−58
+85
+85
−40
−30
1
A0043573
1 Insulation material
Hazardous area
• For measuring devices for use in hazardous areas, see Safety Instructions, Installation or
Control Drawing
• Measuring devices with common explosion protection certificates (e.g. ATEX-/ IEC Ex,...)
can be used in hazardous areas with ambient temperatures to
–54 to +85 °C (–65 to +185 °F) (optionally available). The functionality of the explosion
protection Ex ia is guaranteed for ambient temperatures to –50 °C (–58 °F) (optionally
available).
At temperatures ≤ –50 °C (–58 °F), explosion protection is guaranteed by the housing in
the case of flameproof enclosure (Ex d) type of protection. The functionality of the
transmitter cannot be fully guaranteed. The Ex ia capability can no longer be
guaranteed.