STRAINSENSE M20 Installation And Operation Manual

M20 Pressure Transmitter
Installation and Operation Manual
Contents
1 Introduction .................................................................................................................................................. 1
2 Scope of Supply............................................................................................................................................ 1
3 Unpacking................................... .......................................................................................................... 1
4 Storage................................................................................................................................................. 1
5 Outline Dimensions and Installation ............................................................................................................ 2
6 Electrical Connection........................................................................................................................... 3
7 Operation............................................................................................................................................. 5
8 Maintenance......................................................................................................................... 6
9 Warranty ..................................................................................................................................................... 6
10 Appendix ........................................................................................................................... 7
1. Introduction
At the heart of the M20 pressure transmitter is a precision, silicon Piezoresistive sensing element, enclosed
in a 316L stainless steel housing. The diaphragm material is 316L (up to 250 bar) or 17-4PH (above 250
bar).
Please read this manual carefully to ensure correct & reliable operation.
2. Scope of Supply
The transmitter is supplied with the following items as standard :
M20 Pressure Transmitter
Mating Connector
Operation Manual
Calibration sheet
3. Unpacking
a) Carefully unpack the transmitter, taking care not to damage the transmitter or accessories.
4. Storage
The transmitter should be stored in a dry, well-ventilated room with an ambient temperature of -40°C to
100°C/-20°C to 85°C (depending on the cable type) and a relative humidity of ≤85%. The room should
not contain any corrosive substances.
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M20 Pressure Transmitter
Installation and Operation Manual
5.3 Installation method
Generally, the transmitter should be mounted vertically, perpendicular to the ground, with the pressure port
downwards. If this is not possible, the maximum slope angle between the transmitter and the ground should
not exceed 30 degrees. It is NOT recommended to mount the transmitter upside down.
As an example, the M20 pressure transmitter with a suitable male pressure port can be directly installed on
a measuring pipe joint. To facilitate installation and maintenance, a shut-off valve should be installed between
the connector and the pipeline (See Figure 2.). The recommended torque is between 20Nm and 35Nm.
6. Electrical Connection
6.1 Pin definition
The transmitter either comes with cable or connectors (DIN/M12) for connecting to a measurement system.
Please refer to table 1 and 2 for the pin arrangement of DIN and M12 connectors
Pin
1
2
3
Table 1 - DIN Connector
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Absolute, Gauge and Sealed Gauge
•
• -1 to 1000 bar
Stainless steel construction
•
4-20mA or voltage
•
1
1 (DIN connector only)
1
1
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2 wires 3 wires
+V +V
+OUT GND
- +OUT
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M20 Pressure Transmitter
Installation and Operation Manual
5. Outline Dimensions and Installation
5.1 Dimensions (mm)
DIN connector
5.2 Installation
5.2.1 Check before Installation:
a) The measuring pressure is within the transmitter's pressure range.
b) The pressure media is compatible with the sensor's construction material.
c) The pressure media is unlikely to obstruct the pressure port opening.
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M20 Pressure Transmitter
Installation and Operation Manual
Pin
1
2
4
The pin definitions of M12 cable (MS903/MS904) are as follows:
Color
Brown
Blue
Black
Yellow/Green
6.2 DIN Connector Fitting
a) If the DIN connector is already connected to the transmitter, loosen the central screw on the top of the
connector using a small screwdriver and pull the socket away from the
the plug from the transmitter to protect it.)
b) To disconnect the wiring block, remove the central screw on the top of the socket. Then, turn the socket
over and insert a small flat-head screwdriver into a corner marked "Lift" or an arrow and apply force. The
socket wiring block can then be disconnected from the housing.
c) To connect the cable, pass the cable through the cable jack and connect the wires to the terminals on the
plug core correctly. (The connection terminals are marked with clear numbers.) Please use Ø4.5mm~Ø7mm
shielded cable and connect the cable cores securely to prevent short circuits.
d) Gently pull the cable and push the socket wiring block into the housing, then tighten the cable-fixing nut.
e) Securely attach the mating socket to the transmitter.
Caution: Ensure that the rectangular sealing ring is installed / seated correctly to maintain the protection class
when connecting the plug and socket.
f) To remove the cable, loosen the cable-fixing nut to release the cable. Then, perform the same steps as in
steps a) to disconnect the socket & step b) to access the wiring block. Remove the cable from the terminals
using a small screwdriver and pull the cable out of the cable-fixing nut. Then, reassemble the socket
assembly.
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M12 Connector
Fig. 1
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2 wires 3 wires
- +OUT
+OUT GND
+V +V
Table 2 – M12 Connector
2 wires 3 wires
+V +V
+OUT GND
- +OUT
Ground Ground
transmitter. (Caution: Do not remove
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