TEKSENS THL1203-E User manual
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1
Notes:
1
Do not touch the diaphragm with
hard objects, which may cause damage
to the diaphragm.
2
Please read the Instruction Manual of
the product carefully before installation
and check the relevant information of
the product.
3
Strictly follow the wiring method for
wiring, otherwise it may cause product
damage or other potential faults.
4
Misuse of the product may cause
danger or personal injury.
THL1203-E Submersible Level Transmitter
Features
■Piezoresistive diffused
silicon pressure sensor
■Probe insertion measurement
method, easy to install
■For level measurement
■Multiple protective structure
design, high protection ability
■LCD option
■Variety of styles, suitable for
various industrial applications
■Anti-corrosion stainless steel
material adopted, suitable for
many occasions
Applications
■Static pressure level
■Liquid tanks
■Sewage
■Industrial water
■Pools
■Wells
■Rivers
■Seawater
■Lakes
Product overview
THL1203-E Submersible Level Transmitter accurately measures
static pressure of the liquid proportional to the level depth using
highperformancepiezoresistivediffusedsiliconpressuresensoras
the measuring element. The result is converted to standard current
or voltage signal output through signal conditioning circuit,
establishing the linear corresponding relation between the output
signal and liquid depth to complete the measurement of the liquid
depth. The product has advantages of high precision and small
volume. Submerse it directly into liquid, the height between the end
of the transmitter to the liquid surface is measured easily. The
product is applicable to the measurement and control of the liquid
level in the petroleum, chemical industry, power plant, urban water
supply and hydrological exploration fields.
THL1203-E has passed long-term aging and stability screening
with stable and reliable performance and can be used in harsh
outdoor environment. Meanwhile, it can display liquid level on site.
Zero shift and full scale span shift available.
Notes:
1
Do not misuse documentation.
2
The information presented in this product sheet is for reference only. Do
not use this document as a product installation guide.
3
Complete installation, operation, and maintenance information is provided
in the instructions of the product.
4
Misuse of the product may cause danger or personal injury.
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Performance Parameters
Pressure range
0~0.5m…20mH₂O
4~20mA (18~36V, 24V typical)
Supply & output
4~20mA with display (12~36V, 24V typical)
1~5V, 0~5V, 0.5~4.5V, 0~10V (12~32V, 24V typical)
Operating temp.
-20℃~85℃
Medium temp.
-10℃~70℃
Storage temp.
-40℃~125℃
Compensated temp.
0m~10mH
₂
O: 0℃~60℃
10m~200mH₂O: -10℃~70℃
Zero temp. coefficient
±1.5%FS (within compensated temp.)
Span temp. coefficient
±1.5%FS (within compensated temp.)
Overpressure
200%FS~300%FS
Mechanical vibration
20g (20~5000HZ)
Shock
100g (11ms)
Accuracy
0.5%FS
Insulation
100MΩ/250VDC
Response time
≤1ms (Up to 90%FS)
Long term stability
±0.2%FS/year
Protection
IP68
Material
Low copper aluminum alloy for junction box; stainless steel for level probe
Polyurethane wire for cable
Medium compatibility
All kinds of media compatible with stainless steel 304
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Wiring Method
Wiring
method
2 non-polar wires
Current output Voltage output
①Red wire:
Supply+
Green wire:
Current output
②Red wire: Supply+
Yellow wire:
Voltage output
Green wire:
Ground
1. Installation in still water (deep wells, pools, liquid tanks,etc.)
Installation tips:
1) When measuring the level of stationary fluid in an open container, place the level transmitter vertically
into the bottom of the container and secure the cable connecting the transmitter to the junction box
at the opening of the container.
2) When the medium viscosity is relatively large (such as sewage pool), casing or bracket can be
installed to ensure that the transmitter can be put into the bottom of thecontainer.
3) When doing an open-air installation, the terminal box of the transmitter should be placed in a
ventilated and dry place to avoid direct exposure to light and rain, which may cause the shell
temperature to be too high or water to get inside and damage the internal circuitboard.
Control
room
Secondary instrument
or control system
Secondary
instrument
Ventilated
Sewage
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2. Installation in moving water (rivers, lakes, etc.)
Installation tips:
1) When measuring the water level in flowing water, when the medium fluctuates greatly, a steel pipe
can be inserted in the water channel with an inner diameter of about 50 cm. Make several holes of
about Φ5 in diameter on the side of the immersed pipe opposite to the flow direction to allow water to
enter the pipe and fix the cable and junction box at the outlet of thepipe.
2) When the medium of the water channel fluctuates greatly or the sediment is large, a damping device
can be installed to filter the sediment, eliminate the adverse effects of dynamic pressure and wave
and ensure the measurement accuracy.
3) When installing the product in lightening intensified area, please indicate “Lightning Protection” when
placing an order. Meanwhile, it is recommended that users install lightning protection devices at the
site and ensure that the product and power supply are reliably grounded to reduce damage to the
transmitter caused by lightning.
Over Pressure –Burts Pressure
Pressure Range
Over Pressure
Burst Pressure
0.5m H2O
300％FS
600％FS
1m H2O
300％FS
600％FS
1.5m H2O
300％FS
600％FS
2m H2O
300％FS
600％FS
2.5m H2O
300％FS
600％FS
3m H2O
300％FS
600％FS
3.5m H2O
300％FS
600％FS
4m H2O
300％FS
600％FS
4.5m H2O
300％FS
600％FS
5m H2O
300％FS
600％FS
5.5m H2O
300％FS
600％FS
6m H2O
300％FS
600％FS
6.5m H2O
300％FS
600％FS
Control room
Steel pipe
Control room
Flow direction
Damping device
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B1: 4~20mA (24VDC)
B2: 1~5V (24VDC)
B3: 0~5V (24VDC)
B6: 0.5~4.5V (24VDC)
B7: 0~10V (24VDC)
7m H2O
300％FS
600％FS
8m H2O
300％FS
600％FS
9m H2O
300％FS
600％FS
10m H2O
200％FS
500％FS
12m H2O
200％FS
500％FS
15m H2O
200％FS
500％FS
18m H2O
200％FS
500％FS
20m H2O
200％FS
500％FS
THL1203-E - 10 B1 J3 L1.5
Example: THL1203-E--10B1J3L15
Refer to product model THL1203E, with pressure range 10m H2O, output signal 4~20mA (24VDC
supply), electrical connection cable outlet, cable length 15m.
Optional Accessories
1. The part of cable exceeding the standard cable length
2. THL1203-E anti-blocking protective cover (with filter)
Contact us
TEKSENS PROSES OLCUM EKIPMANLARI LTD STI
Add : 5 YEDPA E68 34779 ATASEHIR-ISTANBUL
Tel :+90 216 660 12 77 +90 216 660 12 78
Fax : +90 216 660 12 79
Email: info@teksens.com.tr
Product model
Refer to “Pressure
range selection”
Refer to “Cable
length selection”
J1: 2088 housing
J2: 2088 housing
with display
J3: Cable outlet
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