Liquid level pressure transmitter sensor 4-20mA

Liquid level pressure sensor high accuracy 4-20mA for water Tanks and Deep Well Pump

Liquid level pressure transmitter sensor PT-928 adopts the diffused silicon pressure sensor core of an internationally renowned company. It converts the measured liquid depth into 4~20mA through a highly reliable amplification circuit and precise digital temperature compensation and non-linear correction technology. , 0~10VDC analog signal and IIC, RS485 and other standard digital signals. It has a wide measuring range and a variety of output signals. Good stability over a wide temperature range. Fully sealed 304 stainless steel isolated small structure, protection grade IP68. Users can measure the height of various liquids conveniently, quickly and accurately. The ultra-high cost performance can be widely used in water conservancy monitoring, underwater environmental work, tap water pipeline systems, underground water pipeline pressure measurement, industrial process pressure measurement and other fields. Can be customized and OEM manufactured according to needs.

Liquid level pressure transmitter sensor features

Compact design, laser welding sealing method;
Stable sensor core, high cost performance;
IP68 waterproof all-stainless steel housing;
Waterproof and anti-corrosion gas cable export;
High sensitivity, high precision, high stability.
A variety of pressure interfaces and signal outputs are available.
Digital temperature compensation and non-linear correction
The liquid inlet is equipped with a protective cover for easy cleaning and can effectively protect against sand, gravel and sedimentation
Multiple signal outputs, equipped with breathable cables: perfectly solve the gauge pressure error caused by the disconnection between the sensor and the atmosphere.
The high-performance diffused silicon sensor core is equipped with a highly integrated bridge pressure sensor dedicated advanced chip for signal conditioning.
High cost performance, one-year warranty

ABOUT US

Shenzhen OULD Instrument CO.,Ltd.

We are professional manufacturer of pressure measurement products since 2002. Our main products include pressure sensors, pressure transmitters, temperature sensors, temperature transmitters, wireless pressure/temperature transmitters, and level transmitters. We are OEM supplier for many well-known producers of air compressors, water pumps, air conditioning equipment, hydraulic equipment, etc. we are also authorized distributor for the automation components of Hirschmann, Lumberg, Metallux, IST, HTP, etc. in China.Our manufacturing plant occupies more than 3,000 square meters, including a dust-free workshop of 1350 square meters for pressure sensors manufacturing, and we have around 100 employees. We have CNC machines and 35 kinds of manufacturing facilities, including temperature compensation test equipment, laser resistance regulator machines, etc. We can produce more than 600,000 pressure sensors/transmitters and 300,000 sets temperature sensors/transmitters monthly. We have strong capability for research and development on our main products and customized products. Our company implements ISO9001 quality management system, and has been identified as National High-Tech Enterprise since 2017. Our products have CE certificate and explosion-proof certificate.

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If you are interested in our products, please contact us.

Range	1000m
Type of Pressure	Gauge pressure, absolute pressure
Overload Pressure	200%FS
Process Connection	G1/4, G1/2, M20*1.5, 1/4NPT, R1/4 can be customized
Comprehensive Accuracy	±1%FS,±0.5%FS、±0.2%FS、±0.1%FS
Temperature Compensation Range	±0.3%FS/year
Long-term Stability	-10～70℃
Operating Temperature	-40℃~85℃
Storage Temperature	-40℃~125℃
Protection Level	IP68
Supply voltage (DC)	10-36V		3-5V
Output Signal	4-20mA	0-5V	0-5V
Load Resistance	50 (U-10)Ω【4-20mA】, greater than 10KΩ【V】
Material	Sensor: ceramic; housing: stainless steel 304; cable: PVC; waterproof ring: HNBR
Medium Adaptability	Various fluids that are non-corrosive to 304 stainless steel
Vibration	10gRMS, (20～2000)Hz
Shock	100g, 11ms
Insulation	Greater than 100MΩ @250VDC
Response Time	Less than 1ms (@90%FS)
CE Certification	EMC: IEC61326-1 Class B
	Electrostatic discharge immunity: IEC61000-4-2
	Electromagnetic field immunity: IEC61000-4-3
	EFT immunity: IEC61000-4-4
	Surge immunity: IEC61000-4-5

Selection tips:

1. When selecting, please note that the medium to be measured must be compatible with the part of the product that is in contact with the medium. At the same time, the type of the medium to be measured must be noted.
Specific gravity (default is water 1g/³ T=4℃).

2. Voltage input and output have various ranges, which need to be specified in the order.

3. IIC output type has no polarity protection. The installation and use process must be confirmed before powering on. The wire length is less than 3 meters.

4. The cable must not be bent vertically during installation, but must be bent in an arc to avoid clogging the air guide holes and affecting accuracy.

5. When measuring flowing liquid, you can insert a hard tube of about φ50 into the liquid, and open a number of small holes at different heights in the opposite direction of the water flow in the tube to avoid the impact of liquid flow on the pressure.

6. When the product is installed in an area with frequent thunderstorms, it is recommended that the user install a lightning protection device.

7. For special requirements, please consult with our company

The PT-928 input liquid level transmitter adopts the diffused silicon pressure sensor core of an internationally renowned company. It converts the measured liquid depth into 4~20mA through a highly reliable amplification circuit and precise digital temperature compensation and non-linear correction technology. , 0~10VDC analog signal and IIC, RS485, etc.
Standard digital signal. Fully sealed 304 stainless steel structure, protection grade IP68. Users can measure the height of various liquids conveniently, quickly and accurately. It is extremely cost-effective and widely used in water conservancy monitoring, underwater environmental work, tap water pipeline systems, underground water pipeline pressure measurement, industrial process pressure measurement, etc.