User guide
2
AP-AO1 Panel mounting bracket
SET AP-C33 MODE
MPa
SET AP-C40 MODE
MPa
Panel mounting ring
Panel-mounted sample
Front  protective 
cover
Panel-mounted sample
5.  Connection Method and Diagrams
Insert  the  included  connector-tipped  cable  into  the  sensor’s  connector. 
Position the connector so that the side of the connector where the metal-
lic contacts are visible is facing up.
Connector cable
Side where the metallic 
contacts are visible faces up.
Input/output circuit
(AP-C30/C31/C33/C35)  (AP-C31P/C33P)
12 to 24 VDC
5 to 40 VDC
5 to 40 VDC
0V
  Main circuit
Overcurrent
 protection circuit
Load
Load
Input/output 
circuit
Analog output/
zero shift input: switchable
Brown
Blue
Black
White
Pink
12 to 24 VDC
0V
  Main circuit
Overcurrent
 protection circuit
Input/output 
circuit
Analog output/
zero shift input: switchable
Brown
Blue
Black
White
Pink
Load
Load
Analog output circuit 
Analog 
output (1 to 5 V)
0 V
Main
 circuit
Blue
Pink
Zero shift input circuit (NPN)  Zero shift input circuit (PNP)
(Short-circuit current 5 mA max.)
Main
 circuit
Blue
Pink
12 to 24 VDC
Main
 circuit
Pink
(Short-circuit current 5 mA max.)
Brown
Use non-contact input device such as open-collector. 
6.  Precautions for Safe Use
Follow these guidelines. Failure to do so may result in product damage.
CAUTION
■
  Connections
Input/output circuit
●
  Always  ground  the  frame  ground  terminal  when  using  an  off-the-
shelf switching regulator.
  ●
 Use separate conduits  for power line  and high  voltage  lines,  since 
use of a common conduit may result in device malfunction.
  ●
 Improper wiring may result in the device becoming excessively hot 
or in device damage.
■
  Other
  ●
 Do not use this sensor with corrosive gasses or liquids.
  ●
 Do not  insert objects such as  wire  into the pressure insertion  area. 
Doing so may result in the device failing to operate properly due to 
damage to the pressure-sensitive elements.
  ●
 Do not use sharp-tipped objects to press the setting keys.
7.  Detection Mode Operation
■
 General-purpose mode (F-1)
  This mode allows the user to configure 2 detection points.
Control output 1: Turns ON when pressure exceeds setting P1.
Control output 2: Turns ON when pressure exceeds setting P2.
<Output 1>
P1
0
Output 1
OFF ON OFF
P2
0
OFF ON OFF
<Output 2>
Output 2
 * Hysteresis is a standard 0.5% of F.S. when operating in general-purpose 
mode and application modes 1 and 2. During focus mode operation, it is 
0.2% of F.S.
■
 Variable hysteresis mode (F-2)
  Two detection points may be user-configured, and hysteresis for both 
may also be set.
Control output 1
: Turns ON when pressure exceeds setting P1. Turns OFF 
when pressure drops the selected hysteresis  amount 
below P1.
Control output 2:
 Turns ON when pressure exceeds setting P2. Turns OFF 
when pressure drops the selected hysteresis  amount 
below P2.
<Output 1>
P1
H1
Output 1
OFF ON OFF
0
P2
OFF ON OFF
H2
0
<Output 2>
Output 2
■
 Window mode (F-3)
  The user may select a pair  of  upper  (Hi)  and lower (Lo) thresholds, 
and the sensor turns OFF when the pressure falls outside of the result-
ing range.
 * Control output 1 is a standard 0.5% of F.S. During focus mode opera-
tion, it has a hysteresis of 0.2% of F.S., and control output 2 has a 
hysteresis of 0.
Hi
Lo
Output1/Output2
OFF ON ONOFF OFF
<Output 1/Output 2>
0
■
 Application mode 1 (A-1)
  This detection mode is optimum for use in suction detection applica-
tions.
  Recommended sensor heads: AP-C30/C31/C31P
Control output 1:
 Suction pressure detection.
  Turns ON when pressure exceeds setting P1.
Control output 2:
 Detection and confirmation of vacuum burst  pressure 
detection (or vacuum ultimate pressure).
  Turns ON when the pressure falls below setting P2.
  * Cannot be used to detect vacuum burst pressure with 
the  AP-C31/C31P  when  operating  in  focus  mode. 
Standard mode operation only. 
Zero shift:  The zero point is shifted immediately after the zero 
shift timer is set following the activation of zero shift 
input.
P1: Pressure setting for control output 1.
T1: Zero shift timer setting (ms) < Variable between 0 and 1,999 ms
P2: Pressure setting for control output 2.
 * P2 is unrelated to zero shift and is always based on the current ambi-
ent pressure.
■ 
Application mode 2 (A-2)
  This mode is optimum for use in leak test applications.
  Recommended sensor head: AP-C33/C33P
Control output 1
:  Leak pressure detection.
  Turns ON when pressure falls below setting P1.
  *Output only when receiving zero shift input.
Control output 2:
 Window comparator output for detection of fill pressure.
  Turns OFF  when pressure  falls outside  the range deter-
mined by upper (Hi) and lower (Lo) thresholds.
  * Fill pressure values are displayed with the center pres-
sure as 0 during focus mode operation.
P1: Pressure setting for control output 1.
Hi: Upper threshold setting for control output 2.
Lo: Lower threshold setting for control output 2.
 * The Hi and Lo values are unrelated to zero shift and are always based 
on the current ambient pressure.
<Output 1>
P1
Output 1
OFF ON OFF
0
<Output 2>
0
Output 2
OFF ON OFF
P2
0
0
Shift
Zero shift input
T1
<Zero shift>
<Output 1>
P1
Output1
Zero shift input
OFF ON
OFF ON
0
<Output 2>
Hi
Lo
Output 2
OFF
ON
OFF OFF
ON






