Media 6 with LCD
Checking the measuring range (span)
If the key is pressed five times,
∆
p100,
which is the value for the maximum differen-
tial pressure, appears in the display.
First check zero, as described in section
6.3.
Press key five times,
Readout:
∆
p 100 = X.XXX ( x1000 ) mbar.
Use a precision regulator to apply a test
pressure corresponding to the maximum
differential pressure
∆
p 100 while moni-
toring the pressure gauge.
Set point values:
∆
p = 0 mbar = 4 mA
(See also note on gas column correction on p. 17)
∆
p 100 = XXXX mbar = 20 mA
If the readout and output signal do not
correspond with the indicated value
∆
p100,
the upper range value of the measuring
range (span) must be calibrated.
Calibrating the measuring range (span)
First check zero, as described in section
6.3.
Turn write protection (switch
4
) and span
protection (switch
3
)
OFF
.
Press key five times.
Readout:
∆
p 100 = X.XXX ( x1000 ) mbar.
Use a precision regulator to apply a test
pressure corresponding to the maximum
differential pressure
∆
p 100 while moni-
toring the pressure gauge.
Keep key pressed down, the current
measured value is shown in the display.
Current signal I shows the present mA
value.
Press key, the span is calibrated,
current signal goes to 20 mA.
Readout
=
^
∆
p 100.
Release key.
Turn write protection (switch
4
) and span
protection (switch
3
)
ON
.
Media 6 with LED
Checking the measuring range (span)
First check zero, as described in section
6.3.
Use a precision regulator to apply a test
pressure corresponding to the maximum
differential pressure
∆
p 100 while moni-
toring the pressure gauge.
Set point values:
∆
p = 0 mbar = 4 mA
(See also note on gas column correction on p. 17)
∆
p 100 % = XXXX mbar = 20 mA
If the output signal I does not correspond
with the value
∆
p100 %, the upper range
value of the measuring range (span) must
be calibrated.
Calibrating the measuring range (span)
Turn write protection (switch
4
) and span
protection (switch
3
)
OFF
.
Use a precision regulator to apply a test
pressure corresponding to the maximum
differential pressure
∆
p 100 while moni-
toring the pressure gauge.
Keep
key pressed down, current signal I
shows the present mA value.
LED starts to flash rapidly.
Press key, the span is calibrated,
current signal goes to 20 mA,
The LED flashes continuously for ~ 2 s.
Release
key, the LED goes out.
20
EB 9527-1 EN
Setting
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