KEYENCE GP-M User Manual
96M11843
Environment Resisting Type
Built-in-amplifier Pressure Sensors
GP-M Series
Instruction Manual
Read this instruction manual before using the product in order to
achieve maximum performance.
Keep this instruction manual in a safe place after reading it so that it
can be used at any time.
Symbols
DANGER
WARNING
CAUTION
NOTICE
Reference
WARNING
In this instruction manual, the following symbols will be used to so
that important points can be understood at one glance.
Be sure to read these messages carefully.
It indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
It indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
It indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
It indicates a situation which, if not avoided, could
result in product damage as well as property damage.
It indicates tips for better understanding or useful infor mation.
Safety Information for GP-M Series
1. Do not use this product for the purpose to
protect a human body or a part of human body.
2. This product is not intended for use as an
explosion-proof product. Do not use this
product in hazardous locations and/or
potentially explosive atmospheres.
3. The GP-M Series is not designed to sanitary
specifications. Do not use the product for
applications such as drinks, foods, or medical
liquids.
4. Do not use the GP-M Series for applications
requiring safety measures, such as any
nuclear, railroad, aircraft, vehicle, or
playground equipment.
2
1. You must verify that the GP-M Series is
CAUTION
NOTICE
operating correctly in terms of functionality
and performance before the start and
operation of the GP-M Series.
2. We recommend that you take all the necessary
safety measures to avoid any damage in the
unlikely event of a problem occurring.
3. Do not use the GP-M Series with corrosive liquids.
1. We cannot guarantee the functions and/or
performance in the event that the product is
used outside the standards of the
specification, or if the product is modified.
2. When using our product in combination with
another product, based on such factors as
conditions of use and surrounding
environment, sometimes functions and
performance may not be fully realized. In such
a case, use after adequate examination.
Precautions on Regulations and Standards
CE Marking
KEYENCE Corporation has confirmed that this product complies with the
essential requirements of the applicable EC Di rectives, based on the
following specifications. Be sure to consider the following specifications
when using this product in the Member States of European Union.
z EMC Directive (2004/108/EC)
• Applicable standards EMI: EN61326-1, Class A
Remarks
These specifications do not give any guarantee that the
end-product with this product incorporated complies with the
essential requirements of EMC Directive.
The manufacturer of the end-product is solely responsible for the
compliance on the end-product itself according to EMC Directive.
EMS: EN61326-1
3
CSA Certificate
CAUTION
NOTICE
GP-M Series complies with the following CSA and UL standards and
has been certified by CSA.
• Applicable standard CAN/CSA C22.2 No.61010-1
Be sure to consider the following specifications when using this
product as a product certified by CSA.
• Overvoltage category: 1
• Use this product under pollution degree 2.
• Use this product at the altitude of 2000 m or less.
• Indoor use only.
• Use CSA/UL certified power supply that provides Class 2 output
as defined in the CEC (Canadian Electrical Code) and NEC
(National Electrical Code), or CSA/ULcertified power supply that
has been evaluated as a Limited Power Source as defined in
CAN/CSA-C22.2 No. 60950-1/UL60950-1.
• Do not use the GP-M Series for poizonous fluid.
Caution when handling
1. When detecting the temperature of the fluid, the
2. The screw part of the main unit is sharp, take
1. Do not drop or hit the device, and avoid any
2. Do not use a sharply pointed object to press
3. If the detection portion is pushed with sharp
UL61010-1
housing of the product will be hot, and there is
the danger of a burn injury. Do not touch the
metal housing while the product is in operation.
care to avoid injury.
other large shock to the device.
the setting keys.
thing, damage may occur to the detection
surface. Also, for devices where the measuring
range is low, the detection portion is thin and
easy to break. Touch as little as possible.
4
Precautions for wiring
CAUTION
NOTICE
NOTICE
1. Do not modify or disassemble unnecessarily. It
may cause electric shock or improper operation.
2. Do not work on the wiring with bare hands.
Even if the power is OFF, electric charge may
remain and cause electric shock.
3. Do not work on the pipe work or wiring with
wet hands. It may cause electric shock.
4. When wiring, confirm the pin position.
5. Use the GP-M Series within the rated range.
The GP-M Series is a sensor that uses a DC
(direct current) power source. Do not apply
alternating current or other power supplies. Do
not use a load that exceeds the allowable limit.
1. Use an insulated stabilizing supply for the
power supply.
2. Do not pull strongly on the cable.
3. Ensure that the cable tip is not submersed in
water during wiring work.
4. Isolate the cable from power supply lines or
power lines.
5. Isolate the cable as far as possible from any
source of noise.
Other precautions
1. The power ON reset time for the GP-M Series is
2 seconds after power is turned on. Do not use
outputs from the sensor during this period.
2. Initial drift may occur after supplying power to
the GP-M Series. To detect a minute difference
in the pressure, let the GP-M Series warm up
for approximately 15 to 30 minutes.
3. Do not bring a strong magnet or magnetic field
close to the main body of the GP-M Series.
5
4. Do not remove the seal of the air hole of the
NOTICE
GP-M001/M010/M025. It will no longer be
waterproof.
5. When condensation occurs, it may become
impossible to make measurements, or,
damage may occur. Take measures such as
the following to prevent condensation.
• Ensure that the ambient temperature is the same
or lower than the fluid temperature.
• Remove moisture via air conditioning
• Separate the sensor 30 cm or more from the
cooling pipes using the connector pipe.
6. When conducting maintenance, use a soft
brush so as not to damage items such as the
detection surface or the O-Ring.
7. When replacing the O-Ring, clean all of the
debris from the surface that will be in contact
with the O-Ring.
Checking the Packed Items
GP-M001/M010/M025
Sensor x 1
Instruction manual x 1
GP-M100/M250/M400
Sensor x 1
Instruction manual x 1
O-Ring x 1
(OP-87287)
O-Ring set x 1
(OP-87288)
6
Name and Function of Each Part
1
Connector
for input
cable use
2
Clasp
3 Air hole
*
4 Operating light (output 1)
5 Operating light
(output 2)
8 MODE button
6
UP button
(U)
7 DOWN
button (V)
O-Ring
Adapter
* Only for the GP-M001/M010/M025
Piping/Installation
Piping
• Use the adapter for matching with the
diameter of the piping.
• When using a replacement adapter, attach
the O-Ring included with the Main Unit to the
groove of the G3/4 female screw part.
(Refer to the diagram below)
GP-M001/M010/M025
GP-M100/M250/M400
Adapter
• Inquire to us when connecting the pipes directly using the GP-M
Series with a G3/4 female screw.
• The body may be rotated horizontally to 330°. When rotating,
hold the clasp in place with something such as a wrench.
Adapter
7
Precautions when installing
Cooling pipe
30 cm or more
z Attaching the coupling
The recommended tightening torque when installing the adapter
to the main body of the sensor is 20 N•m. It is recommended to
apply grease to the G3/4 screw part in order to avoid scorching.
z Grounding of metal parts
The metal parts of the main body, the internal circuits 0 V are insulated.
z Other precautions
• Regardless of whether the power
of the device is ON or OFF, do not
touch the main part of the
pressure detector, if the if the
pressure detector is touched,
damage may occur due to static
electricity.
• If using a non-conductive liquid such as oil, and plastic piping
are used, the risk of an offset change will become greater. In
such a case, it is recommended to ground the metal housing.
• In the case that noise causes malfunction, grounding the
metal housing may improve performance.
• After installation, conduct an atmospheric correction by
making the applied pressure the same as regular room
pressure. (Refer to page 10)
• When there is condensation,
separate the sensor from cooling
pipe by at least 30 cm using the
connecting pipe.
8
Wiring, Output Diagram
3
2 (Output 2)*
1
10 to 30 VDC
4 (Output 1)
0 V
Overcurrent
protection circuit
Main circuit
Load
Load
3
2
(Output 2)*
1
10 to 30 VDC
4 (Output 1)
0 V
Overcurrent
protection circuit
Main circuit
Load
Load
3
2 4 to 20 mA*
Analog current
output circuit
0 V
Main
circuit
Analog input device
2
3
1
4
Output diagram
z When choosing an NPN output
*
When choosing the function of output 2
QWV
(control output) only.
z When choosing a PNP output
*
When choosing the function of output 2
QWV
(control output) only.
Analog output diagram Pin
2
13
4
* When Choosing
#P.)
of the Function of Output 2 only.
M12 Connector Cable (Optional) Pin Position
1 Brown
2 White
3 Blue
4 Black
9
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