CYX23/25 series pressure sensor

 

1 Overview

CYX23/25 series oil injection core pressure sensor is a joint type flat membrane sensitive device. Selection of internationally advanced high-stability, high-precision silicon pressure chips, stress-optimized design of sintering seat, through patch, gold wire bonding, diaphragm welding, high vacuum oil injection, pressure cycle stress relief, high temperature aging, temperature compensation, etc. Craft production. Thirty years of research and production experience and process innovation have made the products have excellent stability and excellent performance, and have been widely recognized by users.

1.1 CYX23/25 series oil filling core pressure sensor recommended thread

The recommended standard threaded joints are M20×1.5, G1/2. The product is used for pressure detection of media compatible with 316L stainless steel and nitrile rubber or fluorine rubber.

1.2 Gauge type for measuring negative pressure CYX23/25 series oil injection core pressure sensor model +Y

The negative pressure oil injection core pressure sensor is produced by a special process of negative pressure, which can reliably complete the detection of lower than atmospheric pressure, and the range is arbitrarily selected between -100kPa and 3MPa.

 

2 Product features

● Measuring range 0kPa～10kPa…10MPa

● With gauge pressure G, absolute pressure A and sealed gauge pressure S

● Constant current/constant voltage power supply

● Isolated structure, suitable for a variety of fluid media

● M20×1.5, G1/2 thread optional

● All 316L stainless steel

3 Main uses

● Industrial process control,

● liquid level measurement

● liquid level measurement

● gas and liquid pressure measurement

● Pressure switch and hydraulic system: Medicine and food equipment

4 Technical indicators

4.1 Electrical performance

● Power supply: ≤3.0mA; DC≤10V DC

● Electrical connection: 0.2mm2 four-color 100mm silicone rubber flexible wire

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

● Input impedance: 2.7kΩ～5kΩ

● Output impedance: 3.0kΩ～6kΩ

● Response time (10%～90%): <1ms

● Insulation resistance: 500MΩ/100V DC

● Allow overvoltage: 1.5 times full scale

 

4.2 Structural performance

● Diaphragm material: stainless steel 316L

● Shell material: stainless steel 316L

● Pressure tube material: stainless steel 316L

● Pin Lead: Gold-plated Kovar

● Sealing ring: nitrile rubber, fluorine rubber (optional)

● Net weight: about 50g (CYX23), 70g (CYX25)

4.3 Environmental conditions

● Vibration: no change under 10gRMS, (20～2000) Hz

● Constant acceleration: 100g, 11ms

● Media compatibility: 316L and nitrile rubber (optional fluorine rubber) liquid or gas

4.4 Benchmark conditions

● Medium temperature: (25±3)℃

● Ambient temperature: (25±3)℃

● Humidity: (50%±10%) RH

● Environmental pressure: (86～106) kPa

● Power supply: (1.5±0.0015) mA DC
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4.5 Standard range sensitivity output and optional pressure form

Range	full range Output (mV)	pressure form		Range	full range Output (mV)	pressure form
0～10kPa	(30-120) ±20	G		0～1.0MPa	(55~145) ±20	G/A
0～35kPa	(40-120) ±20	G/A		0～2.0MPa	(50-160) ±20	G/A
0～70kPa	（20-140) ±20	G/A		0～3.5MPa	（60-150) ±20	G/S/A
0～100kPa	（50~145) ±20	G/A		0～6.0MPa	(60~130) ±20	S
0～200kPa	(30~125) ±20	G/A		0～10MPa	(40~110) ±20	S
0～400kPa	(40-150) ±20	G/A

 

4.6 Basic parameters

Parameters	Typical value	Maximum	Single
Zero output	±1	±2	mV
Non-linear	0.2	0.5	%FS
Late	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,@25℃
Sensitivity temperature drift Note 2	±0.4	±1.0	%FS, @25℃
Long-term stability	0.2	0.3	%FS/year
Excitation current	1.5（Maximum input voltage 10V）		mA
Insulation resistance	500（100VDC）		MΩ
Compensation temperature Note 3	0～50;-10℃～70℃		℃
Operating temperature	-40～+125		℃
storage temperature	-40～+125		℃
Response time	≤1		ms
Housing and diaphragm materials	316L stainless steel
ED sealing ring	Fluorine rubber, nitrile rubber
Measuring medium	Fluid compatible with 316L, nitrile rubber or fluoroelastomer
Life (25℃)	＞1×108 pressure cycle (80%FS)		Times
Filling medium	Silicone oil
ED sealing ring	18.5×23.9×1.5mm（Dingqing or fluorinated rubber Note 4）
Note 1, Note 2: The typical value of zero to 10 kPa temperature drift and sensitivity temperature drift is 0.5%FS@25℃, and the maximum value is 1.2%FS@25℃. Note 3: For 200kPa and below ranges, the compensation temperature is 0～50℃; for more than 200kPa, the compensation temperature is -10℃～70℃. Note 4: The temperature resistance range of fluororubber seals is -20℃～200℃, the low temperature performance is poor, when the temperature range is lower than -20℃, please verify the use.

 

5 Type selection structure

5.1 Core model selection model and outline drawing

Series	Quantity	Type	Outline
CYX23/P	-100kPa～10MPa	CYX2301
		CYX2301P
CYX25/P	-100kPa～10MPa	CYX2501
		CYX2501P

 

5.2 Selection guide

*Technology identification: f means general technology, Y means negative pressure technology.

 

6 Schematic diagram and wiring

  

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

 

7 Application tips

● The hexagonal ED seal ring structure is recommended for the sealing method of the pressure core. When installing the thread, avoid excessive torque affecting the stability of the pressure core. It is recommended that the torque pressure range is not greater than the following values: 0 ~ 500kPa, 0.9Nm; 500kPa ~ 2MPa, 1.1Nm; 2MPa ~ 10MPa, 1.6Nm.

● Pay attention to protect the front diaphragm of the pressure core and the compensation circuit board at the rear end, so as not to damage the performance of the pressure core or damage the core.

● Do not press the metal diaphragm with your hands or hard objects to avoid damage to the core due to chip deformation or perforation.

● The vent pipe at the rear of the G-type core body should be kept open to the atmosphere; it is forbidden for water, water vapor or corrosive media to enter the reference cavity at the rear of the core body.

● Avoid dropping, bumping, etc., which will affect the stability of the product.

● If there is a change in the pin lead, the actual physical label of the core shall prevail.