1 Summary 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 scale3 Application industrial process
control
liquid level measurement of pressure vessel gas
and liquid pressure
measurement
pressure detection and calibration instrument
differential pressure detection
flow meter4 Technical indicators4.1 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
scale4.2 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 38g4.3 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 DC4.5 Standard range sensitivity
output and optional pressure formRangeFull scale output (mV)Typical
valuePressureform RangeFull scale output (mV)Typical
valuePressure
form0~10kPa35~6045D0~400kPa60~8070D0~20kPa70~11090D0~600kPa90~120100D0~35kPa55~8070D0~1.0MPa80~120100D0~70kPa55~8060D0~1.6MPa125~185150D0~100kPa60~8575D0~2.0MPa50~7060D0~200kPa65~8575D0~3.5MPa100~120110D4.6
Basic parametersParametersTypical valueMax valueUnitFull scale
output80150mVZero output± 1±
2mVNonlinearity0.20.5%FSHysteresis0.050.08%FSRepeatability0.050.08%FSInput
/ output impedance2.65.0kΩZero temperature drift(note
1)±0.4±1.0%FS, @25ºCSensitivity temperature drift(note
2)±0.4±1.0%FS, @25ºCLong-term stability0.20.3%FS / yearExcitation
current1.5 (the maximum input voltage can be 10V)mAInsulation
resistance500(100VDC)MΩCompensation temperature (note 3)0~50;
-10~70ºCWorking temperature-40~+125ºCStorage
temperature-40~+125ºCResponse time≤1msHousing and diaphragm
materialstainless steel 316L O-ringFKM, NBR, silicone
rubber Measuring mediumFluids compatible with 316L, NBR or FKM
or silicone Life (25 ºC)> 1 × 108 pressure cycle (80%
FS)timesFilling mediumsilicone oil Sealing ringΦ 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 viton 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 Guide6
Schematic diagram and wiring modeIN + (red wire) - power supply
positive IN - (black wire) - power supply negativeS + (yellow
wire) - output positive S - (blue wire) - output negative7
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 struc
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