7.2 Explosive gas atmospheres zone 2
The PFMH and PFMN can be used in explosion hazardous areas of zone 2 without using Zener barriers.
Approval for PFMx-xx.xxxx.xxxxx.xxxxx.x3xx: Ex nA II T5
All PFMN/H with protection type nA
Comply with the following temperatures and
f
connection values.
8.
Configuration
8.1 Configuration via touch screen
Programming CombiView, type DFON
Tap on the display screen and hold until the menu button appears.
f
Press menu to start the configuration.
f
Examples
Configure damping value.
f
Menu
PFMx menu
Configure pressure unit.
f
PFMx menu
Menu
Further available settings:
f
Input and display outputs
Relays
Warning and error indication
Screen layout
8.2 Zero point
Relative pressure
Set zero pressure equal to atmospheric pressure
f
or level in the selcted tank.
Absolute pressure
Set zero point lower than 1 mbar absolute.
f
Revert to factory setting
Select factory settings with FlexProgrammer.
f
For optimal results, adjust zero point after mounting.
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Output con g.
Damping
Unit setup
Pressure unit
Operating Instructions
Pressure measurement
CombiPress™ PFMH/N
Fully welded pressure transmitter with touch screen
ATEX II 3G Ex nA II T5
Supply range
Temperature class
with display
without display
Damping value
Select from list
Backlight intensity
Color
Language
Zero point adjustment
9 Pressure transmitter and installation area have
the same temperature
9 Zero point pressure set
Press zero button and hold until LED starts to
f
flash fast.
FlexProgrammer or HART configurator can be
used alternatively.
Un: 35 V DC max.
In: 100 mA max.
T1 ... T5:
–30 < Tamb < 65 °C
–40 < Tamb < 85 °C
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