Huatian Cyx-20 Silicon Oil Filled Differential Piezoresistive Pressure Sensor

• Customization: Available
• Type: Piezoresistive Pressure Sensor
• Component: SemiConductor Type
• Model NO.: CYX-20
• For: Diffused Silicon Pressure Transmitter
• Output Signal Type: Analog Type
• Production Process: Integration
• Material: Stainless Steel
• Wiring Type: Four-Wire
• Measuring Medium: Liquid
• Certification: CE
• Customized: Customized
• Range: 10kpa~3MPa
• Transport Package: Standard Package
• Trademark: Huatian
• Origin: Tianshui, Gansu, China
• HS Code: 9026209090
• Production Capacity: 500, 000PCS/Year
• Package Size: 10.00cm * 10.00cm * 6.00cm
• Package Gross Weight: 0.250kg

Product Description

Product Description

CYX20 series differential pressure sensor is a differential pressure sensitive device isolated by stainless steel double corrugated diaphragm. The accurate measurement is achieved by transmitting through the isolation diaphragm and filled silicone oil to the silicon pressure-sensitive element. The sensor is made of international advanced silicon pressure chips with high stability and high precision, and adopts the sintering base with stress optimization design. The sensor is produced by the following processes: patching, gold wire bonding, diaphragm welding, high vacuum oil injection, pressure cycle stress relief, high temperature aging, temperature compensation, etc. The shape, size and sealing mode of the general products are consistent with the international mainstream products of the same kind, and have good interchangeability. They are widely used for differential pressure and liquid level measurement of compatible media with 316L stainless steel, NBR or FKM.

2 Product features

    measurement range: 0 ~ 10kPa…3.5MPa

    constant current / voltage supply

    isolated structure, suitable for multiple fluid media

    all 316L stainless steel

    static pressure 10MPa

    1.5 times overvoltage of full scale

3 Application
     industrial process control                               liquid level measurement of pressure vessel
     gas and liquid pressure measurement          pressure detection and calibration instrument
     differential pressure detection                       flow meter

4 Technical indicators
4.1 Electrical performance

    power supply: ≤ 3.0mA; DC ≤ 10V DC

    electrical connection: 0.2mm² four color 100mm silicon rubber flexible wire

    common-mode voltage output: 50% of current type input (typical value), 40% of voltage type input (typical value)

    input impedance: 2.7kΩ ~ 5kΩ

    output impedance: 3.0kΩ ~ 6kΩ

    response time (10% - 90%): < 1ms

    insulation resistance: 500MΩ / 100V DC

    allowable overvoltage: 1.5 times of full scale
4.2 Structure performance

    diaphragm material: stainless steel 316L

    shell material: stainless steel 316L

    pin lead: silicone rubber flexible wire

    sealing ring: NBR, FKM (optional)

    net weight: about 38g
4.3 Environment condition

    vibration: no change at 10gRMS, (20-2000) Hz

    constant acceleration: 100g, 11ms

    media compatibility: liquid or gas compatible with 316L and NBR (FKM optional)

4.4 Reference conditions

    medium temperature: (25 ± 3) ºC

    ambient temperature: (25 ± 3) ºC

    humidity: (50% ± 10%) RH

    ambient pressure: (86-106) kPa

    power supply: (1.5 ± 0.0015) mA DC

4.5 Standard range sensitivity output and optional pressure form

Range	Full scale output (mV)	Typical value	Pressure form		Range	Full scale output (mV)	Typical value	Pressure form
0~10kPa	35~60	45	D		0~400kPa	60~80	70	D
0~20kPa	70~110	90	D		0~600kPa	90~120	100	D
0~35kPa	55~80	70	D		0~1.0MPa	80~120	100	D
0~70kPa	55~80	60	D		0~1.6MPa	125~185	150	D
0~100kPa	60~85	75	D		0~2.0MPa	50~70	60	D
0~200kPa	65~85	75	D		0~3.5MPa	100~120	110	D

4.6 Basic parameters

Parameters	Typical value	Max value	Unit
Full scale output	80	150	mV
Zero output	± 1	± 2	mV
Nonlinearity	0.2	0.5	%FS
Hysteresis	0.05	0.08	%FS
Repeatability	0.05	0.08	%FS
Input / output impedance	2.6	5.0	kΩ
Zero temperature drift (note 1)	±0.4	±1.0	%FS, @25ºC
Sensitivity temperature drift (note 2)	±0.4	±1.0	%FS, @25ºC
Long-term stability	0.2	0.3	%FS / year
Excitation current	1.5 (the maximum input voltage can be 10V)		mA
Insulation resistance	500(100VDC)		MΩ
Compensation temperature (note 3)	0~50; -10~70		ºC
Working temperature	-40~+125		ºC
Storage temperature	-40~+125		ºC
Response time	≤1		ms
Housing and diaphragm material	stainless steel 316L
O-ring	FKM, NBR, silicone rubber
Measuring medium	Fluids compatible with 316L, NBR or FKM or silicone
Life (25 ºC)	> 1 × 10^8 pressure cycle (80% FS)		times
Filling medium	silicone oil
Sealing ring	Φ 16 × 1.8mm (NBR or FKM (note 4))
Note 1 & 2. 0-10kPa zero temperature drift and sensitivity temperature drift: typical value is 0.5% FS @ 25 ºC, maximum value is 1.2% FS @ 25 ºC. Note 3. compensation temperature 0~ 50 ºC for ranges ≤200kPa; - 10ºC~ 70 ºC for ranges >200kPa. Note 4. temperature resistance range of seal ring is - 20 ºC ~ 200 ºC, low temperature performance is poor, When the temperature is lower than - 20 ºC, please verify before using.

5 Model structure selection
 5.2 Selection Guide

6 Schematic diagram and wiring mode

IN + (red wire) - power supply positive		IN - (black wire) - power supply negative
S + (yellow wire) - output positive		S - (blue wire) - output negative

7 Application Tips

   The leading line end of the sensor is a high pressure end, and the other end is a low pressure end. The "H" and "L" marks on the sensor can also be used to identify the high and low pressure ends. During operation, the pressure added to the high pressure end should not be less than the pressure added to the low pressure end.

   Housing: the inlet end of assembly cavity should be designed with a conical angle, which is easy to assemble and prevent the right angle from scratching the sealing ring. The "floating" sealing structure of O-ring on the side wall is recommended for sealing the differential pressure sensor, which can avoid the front end being compressed and the stability being affected.

   Pay attention to protect the front and rear diaphragm and middle compensation circuit board, so as not to affect the performance or cause damage to the pressure sensor.

   During assembly, pay attention to the tolerance fit between the pressure sensor size and the inner shell of the transmitter. It is recommended that the cavity be processed according to + 0.02 - + 0.05 of the pressure sensor diameter to achieve the required air tightness.

   Avoid falling, crashing, etc., which will affect the stability of the product.

   In case of any change of pin lead, the label with the pressure sensor shall prevail.