1 Overview

CYX12 series oil injection core pressure sensor adopts international advanced high stability and high precision silicon pressure chip, adopts sintering seat of stress optimization design, through patch, gold wire bonding, diaphragm welding, high vacuum oil injection, pressure cycle stress relief, High temperature aging, temperature compensation and other processes. The product has excellent stability and excellent performance.

The compact size is designed to meet the small size of the user’s machine. It is used for pressure detection of media compatible with 316L stainless steel and nitrile rubber or fluorine rubber.

2 Product features

● Measuring range 0kPa～200kPa…100MPa
● With gauge pressure G, absolute pressure A and sealed gauge pressure S
● Constant current power supply
● Isolated structure, suitable for a variety of fluid media
● Φ12.6mm pressure oil injection core
● All 316L stainless steel
● Tantalum diaphragm can be customized

3 Main uses

● Industrial process control, oil well monitoring, oil well monitoring, gas, liquid pressure measurement, gas and liquid pressure measurement
● Pressure detection and calibration instrument Pressure switch and hydraulic system Pressure switch and hydraulic system Fire Internet of Things

4 Technical indicators

4.1 Electrical performance

● Power supply: ≤3.0mA
● Electrical connection: 0.2mm2 four-color 100mm silicone rubber flexible wire
● Common mode voltage output: 50% of the current input (typical value)
● 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
● Pin Lead: Gold-plated Kovar
● Sealing ring: nitrile rubber, fluorine rubber (optional)
● Net weight: about 10g

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

4.5 Standard range sensitivity output and optional pressure form

4.6 Basic parameters

5 Type selection structure

5.1 Core model selection model and outline drawing

Series	Quantity	Type	Outline
CYX12	600kPa～10MPa	CYX1201
	25MPa～100MPa	CYX1202

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 sealing method of the pressure core is recommended to use the “floating” sealing structure of the O-ring on the side wall to avoid the front end face compression and prevent affecting the stability of the pressure core.
● 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 cause damage to the core.
● The core cavity of the outer shell should be designed with a tapered angle, which is easy for the core body to assemble and can prevent the seal ring from being scratched at a right angle.
● When assembling, pay attention to the size of the core and the tolerance of the inner shell of the transmitter. It is recommended that the cavity be processed according to the core diameter of +0.02~+0.05 to achieve the required airtightness.
● When assembling, put it upright and press down evenly to prevent jamming or crushing the compensation piece.
● 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 core body pins should not be cut too short when wiring, the length is generally not less than 5mm, and the welding time is not more than 5 seconds.
● The vent tube 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.