Description
1 Summary
CYX12 series oil injection core pressure sensor adopts the international advanced high stability and high precision silicon pressure chip, adopts the sintering base of stress optimization design, and is produced by the process of patch, gold wire bonding, diaphragm welding, high vacuum oil injection, pressure circulation stress relief, high temperature aging, temperature compensation, etc.The product has excellent stability and excellent performance.
Miniaturization of the overall size of the user to meet the overall small size and design.It is used for pressure detection of compatible media with 316L stainless steel, nitrile rubber or fluororubber.
2 Features
the measuring range is 0kpa ~ 600kpa100MPa
it has the form of gauge pressure g, absolute pressure a and sealing gauge pressure s
constant current power supply
isolated structure, suitable for a variety of fluid media
Φ 12.6mm pressure oil injection core
tantalum film can be customized
3 Main uses
industrial process control
oil well monitoring
gas and liquid pressure measurement
pressure detection and calibration instrument
pressure switch and hydraulic system
internet of things for fire protection
4 Technical index
4.1 Electrical performance
power supply: ≤ 3.0ma
electrical connection: 0.2mm2 4-color 100 mm silicone rubber flexible conductor
common mode voltage output: 50% of current mode input (typical value)
input impedance: 2.7K Ω ~ 5K Ω
output impedance: 3.0k Ω ~ 6K Ω
response time (10% ~ 90%): < 1ms
insulation resistance: 500M Ω / 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: Gold Plated Kovar
sealing ring: nitrile rubber, fluororubber (optional)
net weight: about 10g
4.3 Environment condition
vibration: no change at 10grms, (20-2000) Hz
constant acceleration: 100g, 11ms
media compatibility: liquid or gas of 316L and NBR (optional fluororubber)
4.4 Base conditions
medium temperature: (25 ± 3) ºC
ambient temperature: (25 ± 3) ºC
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
| Range | Full scale
Output (mV) | Typical value | Pressure
form | | Range | Full scale
Output (mV) | Typical value | Form of pressure |
| 0~600kPa | 90~120 | 100 | G/A | 0~10MPa | 180~230 | 200 | S/A |
| 0~1.0MPa | 80~120 | 100 | G/A | 0~25MPa | 140~170 | 150 | S/A |
| 0~1.6MPa | 125~185 | 150 | G/A | 0~40MPa | 230~280 | 250 | S/A |
| 0~2.0MPa | 50~70 | 60 | G/A | 0~60MPa | 100~160 | 130 | S/A |
| 0~3.5MPa | 100~120 | 110 | G/S/A | 0~100MPa | 100~150 | 120 | S/A |
| 0~7.0MPa | 120~150 | 135 | S/A | | | | |
4.6 Basic parameters| Parameters | Typical value | Maximum | Company |
| Full scale output | 100 | 250 | 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 | K Omega |
| Zero temperature drift | ±0.4 | ±1.0 | %FS,@25Temperature |
| Sensitivity temperature drift | ±0.4 | ±1.0 | %FS, @25ºC |
| Long term stability | 0.2 | 0.3 | %FS / year |
| Exciting current | 1.5(the maximum input voltage can be 10V) | mA |
| Insulation resistance | 500(100VDC) | M Omega |
| Compensation temperature | -10ºC~70ºC | Temperature |
| Working temperature | -40~+125 | Temperature |
| Storage temperature | -40~+125 | Temperature |
| Response time | ≤1 | MS |
| Shell and diaphragm material | 316L stainless steel | |
| O-ring | Fluororubber, nitrile rubber, silicone rubber | |
| Measuring medium | Fluids compatible with 316L, nitrile rubber or fluoroelastomer or silicone rubber | |
| Life (25 ºC) | > 1 × 108 pressure cycle (80% FS) | second |
| Filling medium | silicone oil | |
| Seal ring | Φ 10 × 1.3mm (nitrile or fluorinated rubber note 1) | |
| Note 1: The temperature resistance range of fluororubber seal ring is - 20 ºC ~ 200 ºC. When the temperature range is lower than - 20 ºC, please select it carefully. |
5 Selection structure5.1 Model selection and outline drawing of core body| Series | Range | Model | Outline drawing |
| CYX12 | 600kPa~10MPa | CYX1201 | |
| 25MPa~100MPa | CYX1202 | |
5.2 Selection Guide
6 Schematic diagram and wiring mode
IN+ (red line) -Supply Positive IN - (black line) - Supply Negative
S + (yellow line) - Output Positive S- (blue line) - Output Negative
7 Application Tips The "floating" sealing structure of side wall O-ring is recommended for the sealing mode of pressure core body, so as to avoid the compression of front end face and affect the stability of pressure core body. Pay attention to protect the front diaphragm and the compensation circuit board at the back end of the pressure core body, so as not to damage the performance of the pressure core body or cause damage to the core body. The core cavity of the shell shall be designed with a conical angle, which is easy for core assembly and can prevent the seal ring from being scratched by the right angle. During assembly, pay attention to the tolerance fit between the core size and the inner shell of the transmitter shell. It is suggested that the cavity should be processed according to + 0.02 - + 0.05 of the core diameter to achieve the required air tightness. During assembly, it should be placed vertically and pressed down evenly to avoid jamming or crushing the compensation plate. Do not press the metal diaphragm with hands or hard objects to avoid core damage due to chip deformation or perforation. When wiring, the core pin should not be cut too short, the length is generally not less than 5mm, and the welding time is not more than 5 seconds. The ventilation pipe at the rear of the g-core should be connected with the atmosphere; water, water vapor or corrosive media are not allowed to enter the reference chamber at the rear of the core. Avoid falling and bumping, which will affect the stability of the product. If there is any change in the pin lead, the label carried by the core shall prevail.
Complaint
