Model NO.
501
Wiring Type
Four-Wire
Measuring Medium
Liquid
IP Rating
IP68
Certification
RoHS
Customized
Customized
Transport Package
Foam+Carton
Specification
dia. 19mm
Trademark
Runpaq
Origin
China
Type:
Piezoresistive Pressure Sensor
Component:
SemiConductor Type
For:
Diffused Silicon Pressure Transmitter
Output Signal Type:
Analog Type
Production Process:
Integration
Material:
Stainless Steel
Flush Diaphragm Material Ceramic Piezo-Resistive Pressure Sensor for refrigeration equipment
Brief Introduction
Flush diaphragm ceramic pressure sensors are made with a ceramic base plate and a flush diaphragm and work following the piezoresistive principle. The Wheatstone bridge is screen printed on one side of the flush ceramic diaphragm which is, in turn, glued to the sensor's body. The bridge faces the inside where a cavity is made and the diaphragm's opposite side can therefore be exposed directly to the medium to be measured.Because of the Al2O3 ceramic excellent chemical resistance (aggressive gases, most of solvents and acids, etc.),
no additional protection is normally required.
Ceramic pressure sensors are thermally compensated by laser-adjustable PTC resistors and the use of ceramic ensures a high linearity across the entire range of measurement, reducing effects of hysteresis to a minimum.
Technical parameters
Tests performed at 25°C in Metallux housings, unless otherwise specified. Different housings may affect performances.
1. Psi values for reference only.
2. The sensitivity of each production batch is constant, within the indicated range and with minimal dispersion.
3. Accuracy =√NonLinearity2+Hysteresis2 +NonRepeatability2, terminal based.
4. All technical characteristics will remain within indicated ranges performing the above-mentioned reliability tests.
Drawing & wiring diagram
Dimensions
Model selections
Note: 1. Extremely attention must be paid to sensor installation process to avoid any miss conduction that affect the sensor performance,
2. please protect the diaphragm and the compensated board carefully to prevent any damage. 3. Please contact us if your requested working
temperature lower than -20ºC
Brief Introduction
Flush diaphragm ceramic pressure sensors are made with a ceramic base plate and a flush diaphragm and work following the piezoresistive principle. The Wheatstone bridge is screen printed on one side of the flush ceramic diaphragm which is, in turn, glued to the sensor's body. The bridge faces the inside where a cavity is made and the diaphragm's opposite side can therefore be exposed directly to the medium to be measured.Because of the Al2O3 ceramic excellent chemical resistance (aggressive gases, most of solvents and acids, etc.),
no additional protection is normally required.
Ceramic pressure sensors are thermally compensated by laser-adjustable PTC resistors and the use of ceramic ensures a high linearity across the entire range of measurement, reducing effects of hysteresis to a minimum.
| Applications | Key features & advantages |
| • Cooling equipment & A/C system • Automotive and vehicle • Industrial process control • HVAC system • Refrigeration equipment • Air conditioning unit | • Pressure range 0.5bar‐800bar • Excellent resistance to corrosion and abrasion • Absolute measurement available • Thermally compensated • Extended customization • Extended choice of measuring ranges |
Technical parameters
| Parameter | Unit | Description | |||||||||||
| sensor type | - | flush diaphragm, absolute (A), gauge (R) or sealed gauge (S) | |||||||||||
| technology | - | piezoresistive | |||||||||||
| diaphragm material | - | ceramic Al2O3 96% (standard), 99.6% or sapphire (on request) | |||||||||||
| weight | g | < = 8 (ceramic cell only) | |||||||||||
| response time | ms | <= 1 | |||||||||||
| supply voltage VDC | VDC | 2...30 | |||||||||||
| offset | mv/v | -0.1 ~ +/-0.1 (other nominal values available on request) | |||||||||||
| current cons. | mA | < = 1.3 @ 10V | |||||||||||
| operating temperature | °C | ‐40...+135 (‐40 °F...+275 °F) | |||||||||||
| storage temperature | °C | ‐40...+150 (‐40 °F...+302 °F) | |||||||||||
| impedance | kΩ | 11+/- 30% | |||||||||||
| nominal pressure FSO | bar | 0.5 | 1 | 2 | 5 | 10 | 20 | 50 | 100 | 200 | 400 | 600 | 800 |
| psi | 7 | 14 | 29 | 73 | 145 | 290 | 725 | 1450 | 2900 | 5800 | 8700 | 11600 | |
| overload pressure | bar | 1 | 2 | 4 | 10 | 15 | 35 | 100 | 150 | 350 | 500 | 750 | 1000 |
| psi | 14 | 29 | 58 | 145 | 217 | 507 | 1450 | 2175 | 5075 | 7250 | 10875 | 14500 | |
| burst pressure | bar | 2 | 3 | 6 | 15 | 25 | 65 | 120 | 200 | 500 | 650 | 950 | 1250 |
| psi | 29 | 43 | 87 | 217 | 362 | 942 | 1740 | 2900 | 7250 | 9425 | 13775 | 18125 | |
| vacuum capability | bar | -0.1 | -0.5 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| psi | -1.4 | -7 | -14 | -14 | -14 | -14 | -14 | -14 | -14 | -14 | -14 | -14 | |
| type | - | R | A/R/S | A/R/S | A/R/S | A/R/S | A/R/S | A/R/S | S | S | S | S | S |
| total thickness | mm | 6.15 | 6.17 | 6.23 | 6.30 | 6.35 | 6.55 | 6.70 | 6.70 | 7.05 | 7.32 | 7.55 | 8.05 |
| in | 0.242 | 0.2432 | 0.245 | 0.248 | 0.250 | 0.258 | 0.263 | 0.263 | 0.278 | 0.288 | 0.297 | 0.317 | |
| sensitivity 2 | mv/v | 1.4-2.4 | 2.0-3.6 | 2.3-3.5 | 2.3-4.0 | 3.1-5.5 | 2.4-4.0 | 4.0-6.0 | 3.0-4.8 | 2.5-3.9 | 3.1-4.8 | 3.1-4.8 | 2.0-3.5 |
| accuracy 3 | %/fs | 0.4/0.9 | 0.3/0.9 | 0.3/0.6 | 0.2/0.4 | 0.2/0.5 | 0.2/0.5 | 0.2/0.5 | 0.2/0.5 | 0.4/0.9 | 0.5/1.0 | 0.5/1.0 | 0.5/1.0 |
| thermal offset shift(typ./max) | %/fs/k | ± 0.005 / ± 0.040 25 °C...85 °C (77 °F...185 °F) | |||||||||||
| thermal span shift | %/fs/k | ≤ ± 0.010 0 °C...70 °C (32 °F...158 °F) ≤ ± 0.012 -25 °C...0 °C / 70 °C...85 °C (-13 °F...32 °F / 158 °F...185 °F) ≤ ± 0.014 -40 °C...-25 °C / 85 °C...135 °C (-40 °F...-13 °F / 185 °F...275 °F) | |||||||||||
| reliability tests 4 | - | 1000 hours @85 °C (185 °F) & 85 %RH 500 thermal shocks ‐40°C...+150 °C (‐40 °F... +302 °F) 1000 hours burn‐in @150 °C (302 °F) 10 million 0 bar to Pnom pressure cycles | |||||||||||
1. Psi values for reference only.
2. The sensitivity of each production batch is constant, within the indicated range and with minimal dispersion.
3. Accuracy =√NonLinearity2+Hysteresis2 +NonRepeatability2, terminal based.
4. All technical characteristics will remain within indicated ranges performing the above-mentioned reliability tests.
Drawing & wiring diagram
Dimensions
Model selections
Note: 1. Extremely attention must be paid to sensor installation process to avoid any miss conduction that affect the sensor performance,
2. please protect the diaphragm and the compensated board carefully to prevent any damage. 3. Please contact us if your requested working
temperature lower than -20ºC
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