LEEC SMP131-SLH205G2F24MD-5A User manual

Pressure sensor/ transmitter shall be installed by professional
engineers, technicians and other qualified personnel, please read carefully
the content and important information provided by this installation guide
and label before installation.
Pressure sensor / transmitter is powered by an external power supply,
the power supply should be in accordance with relevant standards
stipulated by energy limitation circuit, and pay attention to the high-voltage
that may exist in the circuit.
The static overpressure has been marked on the label, the maximum
pressure value should be no more than the span of transmitter.
Using pressure sensor/transmitter in dangerous situations, product
installation, using and maintenance should comply with installation guide
and relevant provisions of national standards.
For measuring high
temperature steam, should be
pre-injected in most tube
condenser cooling water,
waiting for the steam pipes is
stable, slowly open the shut-off
valve to start measuring.
Can be used for liquid level
measurement in Open container,
should be considered media
compatibility, and mounted on a level
and temperature changes smoothly
position, it will help to improve the
measurement accuracy.
For light weight pressure transmitter,
pressure transmitter does not need
the support bracket, can be mounted
directly on the pressure tube.
Using a spanner to wring hex bolts,
the maximum torque force is no more
than 50Nm.
The tapping location is selected by
measuring media, situated at the top for
gas, on the side or bottom for liquid and
steam.
Forbid base welding with pressure
transmitter! Avoid to the base
deformation caused by welding, and
pay attention to clean up waste residue,
avoid scratching the measuring
diaphragm.
The thread length must be more than the
base thread depth, to ensure end gasket
seal Is effective.
The thread length must be less than the
base thread depth, to ensure root gasket
seal Is effective.
Using raw material belts or sealant sealing,
when thread lock hard, there is a small part
of space.
Static overpressure
Power supply
Signal outline type
Explosion proof mark
Intrinsic safety equipment parameters
SN:1301-011 -010-1-39800
IN OUT
0 2MPa 4 20： ～ : ～ mA
OP ACC
. 3MPa :0.5%：
SUPPLY:24VDC
Ui 28VDC Li:93m A Pi:0.66W:
Ci:35nF Li:0mH
LEEG INSTRUMENTS CO.,LTD.
SMP131-SLH205G2F24MD-5A
Pressure transmitter
Exia CT4Ⅱ
GYB0771157X
1/:+
2/:-
3
4
1
2
3
4
5
5
2pcs pressure transmitter can be
composed of DP measurement
systems, commonly used in the filter
control or closed container level
measurement.
1
2
Label Two wires Three wires Four wires
1Power+Power+
2Power-Power-
3Signal+
Pipe mounting bracket Panel mounting bracket
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Can be used to gauge and
absolute pressure
measurement, waiting for
the pressure vessel is
stable, slowly open the shut-
off valve to start measuring.
Pressure Transmitter/ Quick Installation Guide

Independent liner direct power supply is suggested to adopt for the power supply of
pressure transmitter, over large resistive load will result in a large pressure drop, so it
requires to calculate the all-in resistance of signal cable, display meter and other
record and display equipment, to ensure the voltage provided to the pressure
transmitter accord with normal operating requirements.
4-20mA Two wire
Three wire Current /voltage signal
Four wire Current /voltage/digital signal
Intrinsic safety 4-20mA Two wire
Measurement signal is abnormal which should judge the process pressure is
abnormal, measuring system error or influence of installation environment or abnormal
in the pressure transmitter, then analyze the reason and take corresponding
measures.
No signal output, process pressure changes but no measurement corresponding
change, or , it may be an abnormal pressure transmitter, it change does not correspond
needs to check the power supply voltage, wiring, power consumption and load
resistance whether they meet normal operating requirements. Also need to check if
there is leaks and pressure impulse line blockage, shut-off valve not turned on, etc.
Signal output error is too big or it exceeds need to check the power the normal range,
supply voltage, power consumption and load resistance whether they meet normal
operating requirements, the measuring range setting, if adjustment is correct. Also
need to check if there is leaks and pressure impulse line blockage, shut-off valve not
turned on, rapid temperature fluctuations, etc.
If there is any question, please contact Shanghai LEEG Instruments Co.,Ltd. Tel: [phone] Fax: [phone] Email: [e-mail], [e-mail]
The signal connection of intrinsic safety instruments needs to refer to
isolation safety barrier factory instructions.
Using cable with shielded twisted-pair signal has the best effect, to avoid ground loop,
shielded layer adopts single-end grounded.
Transient resistance built-in module only effect in the case of good grounding, metal
shell and internal grounding terminals is used to the nearest grounded directly.
In order to avoid the liquid flowing along the
cable, which will cause waterproof joint
effusion or flow into terminal box, an U-
shaped ring needs to configured between
pull box and pressure transmitter as in the
picture, and make the U-shaped bottom
under the pressure transmitter. Considering
the needs of maintenance and replace,
enough cable length needs to reserve.
Using flame proof pressure
transmitter in dangerous situations,
need to use metal flexible explosion-
proof tube to connect the signal cable
into pull box and lead to the safety zone.
Please refer to the label for specific signal outline type.
+
-
1
2
1
2
3
+
-
1
2
1
2
3
Label
Label
Label
Label
+
-
S+
1
2
3
1
2
3
+
-
S+
S-
Red
Black
Yellow
Blue
Label Two wires Three wires Four wires
1/Brown Power+Power+Power+
2/White Signal-
3/Blue +
Signal Signal+
4/Black Power-Power-Power-
Label Two wires Three wires Four wires
Red Power+Power+Power+
Black Power-Power-Power-
Blue Signal+Signal+
Yellow Signal-
For example choose DIN43650
ŒConnect the positive power supply P+（ ）
to the terminals 1 of pressure transmitter;
Connect the positive signal module (S+)
to the terminals 2 of pressure transmitter;
ŽConnect the negative signal module (S-)
to the negative power supply (P-).
1
2
1
2
3
3
3
3
4
Brown
black
Blue
White
PWR/
COMM
TEST
Label Two wires Three wires Four wires
P WR+ Power+Power+
P WR- -Powe r Power-
TEST+ +
Signal
Label Two wires Three wires Four wires wires
+Power+Power+Power+
-Power-Power-Power-
ASignal+Signal+
BSignal-
Adjustment needs caution. Not all types of pressure transmitters have
adjustment function.
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Reference standard pressure source,
adjust the potentiometer to calibrate the
pressure transmitter, maximum adjustable
range is + / - 5%. Using a straight
screwdriver, forward or reverse rotate to
increase or decrease the range. The
potentiometer belongs to precision device,
which needs fine-tuning.
Through LCD buttons, terminal box
external buttons or software as HART
protocol, it is convenient for range
adjustment. For detailed operation, please
reference instructions of display meter,
HART protocol and so on.
Red
Black
Blue
Yellow
Filter
！The reference pressure is the current atmospheric pressure for gauge pressure
transmitter.Be careful, avoid the filter dropping off, and kept dry.
For example choose DIN43650
ŒConnect the positive power supply P+（ ）
to the terminals 1 of pressure transmitter;
Connect the positive signal module (S+)
to the terminals 2 of pressure transmitter;
ŽConnect the negative signal module (S-)
to the negative power supply (P-).
Please note! The signal connection
of intrinsic safety instruments needs to
refer to isolation safety barrier factory
instructions.
For example choose DIN43650
Œ Connect the positive power supply P+（ ）
to the terminals 1 of pressure transmitter;
 Connect the negative power supply P-（
）to the terminals 2 of pressure transmitter,
connect the negative signal module (s-) to
the negative power supply P- ;（ ）
ŽConnect the positive signal module (S+) to
the terminals 3 of pressure transmitter;
For example choose cable connect directly
ŒConnect the positive power supply P+（ ）
to red wire of pressure transmitter;
Connect the nega tive power supply P-（
）to black wire of pressure transmitter,;
ŽConnect the positive signal module
(S +) to blue wire of press ure tran smit te r;
Connect the nega tive signal module (S-
) to yellow wire of pressure transmitter;
Pressure Transmitter/ Quick Installation Guide
A B
+ -
A B + -
A