INFICON HPG400-SP ATM to High-Vacuum Gauge (Profibus) User Manual

Page 27

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tira36e1-a (0310) BPG/HPG400 v1.cp

27

Pressure unit

Full scale

COUNTS

30 333

Torr

750.06168

mTorr (Micron)

750 061.68

mbar

1 000

Pascal

100 000

When the gauge is not in the EXECUTING status (ID 25, Device Block) or if there
is a device error, a value defined by Safe State is output as pressure value. You
can select among:

• "0"
• Full scale
• Last valid value
• Safe Value (user-definable in ID 40)

Safe State

Coding

PV behavior

Zero

0

The Process Value (measured value ID 19) is set
to 0.

Full Scale

1

The Process Value (measured value ID 19) is set
to the full scale value (ID 24).

Hold Last Value

2

The Process Value is set to the last valid value
obtained in the EXECUTING status.

Use Safe Value

3

The Process Value (measured value ID 19) is set
to the Safe Value (ID 40).

The Safe Value is the value output with the Process Value parameter (ID 19) when
an error occurs or the gauge goes to the NOT EXECUTING status. If this value is
set to zero, it will remain on zero when the data unit is changed.

Overrange is the highest valid measured value at which Reading Valid is still on
"1".

Pressure unit

Overrange

COUNTS

31 000

Torr

750.06168

mTorr (Micron)

750 061.68

mbar

1 000

Pascal

100 000

Pressure unit

Overrange

COUNTS

30 333

Torr

750.06168

mTorr (Micron)

750 061.68

mbar

1 000

Pascal

100 000

Underrange is the lowest valid measured value at which Reading Valid is still on
"1".

Pressure unit

Underrange

COUNTS

20 480.7254

Torr

4.12534×10

-3

mTorr (Micron)

4.12534

mbar

5.5×10

-3

Pascal

0.55

HGP400-SP

3.2.2.7 Safe State

3.2.2.8 Safe Value

3.2.2.9 Overrange

BGP400-SP

HGP400-SP

3.2.2.10 Underrange

BGP400-SP

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