Datasheet

6
Switching is possible between analog voltage output and external input
Multi-function type is available that allows selection of analog voltage output or external input (auto-reference / remote zero-adjustment).
This is suitable for multi-specification applications.
Auto-reference /
remote zero-adjustment
Low pressure type: 1 to 5 V
High pressure type: 0.6 to 5 V
Comparative output
Analog voltage output
External input

or
ANALOG
lights up
Multi-function type
Equipped with auto-reference / remote zero-adjustment functions
More precise pressure management is possible with a minimum of effort
If the reference pressure of the
device changes, the auto-
reference function partially shift
the comparative output
judgment level by the amount
that the reference pressure
shifts, and the remote zero-
adjustment function can reset
the display value to zero via
external input. These functions
are ideal for places where the
reference pressure fluctuates
wildly, or where fine settings are
desired.
Multi-function type
Multi-function type
With auto-reference function applied
20
15
0
5
OK
Comparative output: Window comparator mode
Hi-10, Lo-1
5
30
Auto-reference input
Sets the absolute threshold level
The display remains at ‘30’ and
only the threshold level is changed.
Threshold level before applying
auto-reference input
Trial 1
25
Time
Pressure
Auto-reference input value
Comparative output: Window comparator mode
Hi-10, Lo-1
5
Sets the absolute threshold level
With remote zero-adjustment function applied
20
15
0
5
OK
30
Remote zero-adjustment input
Threshold level before applying
remote zero-adjustment input
Threshold level after applying
remote zero-adjustment input
Trial 1
25
Time
Pressure
Displayed when remote zero-
adjustment input is applied
5
Without auto-reference and remote zero-adjustment functions
0
30
40
OK
NG?
NG?
25
Comparative output: Window comparator mode
Hi-130, Lo-125
Fixed set value
20
Leak threshold level
Variation in the filling pressure
15
Trial 1
Trial 2
Trial 3
Time
Pressure
The display is forced to ‘0’, and only the
filling pressure drop range is displayed.
Select
0
Threshold level after applying
auto-reference input
Because the threshold level is fixed for conventional pressure sensors,
changes in the reference pressure result in wrong decisions.
When remote zero-adjustment input is applied, the reference pressure is forced to ‘0’.
If the reference pressure changes to ‘20’ or ‘40’, the remote zero-adjustment input
adjusts the reference pressure to ‘0’ every time the reference pressure changes, so
any variation in the filling pressure can be ignored.
When auto-reference input is applied, the reference pressure ‘30’ is added
to the threshold level. If the reference pressure changes to ‘20’ or ‘40’, the
auto-reference input compensates for this every time by changing the
threshold level, so any variation in the filling pressure can be ignored.
10/2006