MEMS Pressure Sensor | Piezoresistive (Gauge/Absolute/ΔP)
Winsen’s piezoresistive MEMS portfolio spans board-level sensors and rugged transmitters. Measure mengukur, mutlak Dan differential (ΔP) pressure—from barometric 300–1100 hPa and Pascals-level ΔP up to 25 bar process lines—with outputs tailored for embedded controllers or PLC/BMS.
OEM/ODM • Pelabelan pribadi • Waktu tunggu yang cepat
- Pascals → 25 bar scalable ranges
- 0.5–4.5 V / I²C board-level
- 0–10 V / 4–20 mA industrial transmitters
- Gauge / Abs / ΔP measurement modes
Overview & Working Principle
Our MEMS sensors use a diffused-silicon piezoresistive diaphragm forming a Wheatstone bridge. Pressure-induced strain changes bridge resistance and the ASIC provides a temperature-compensated, linear output. For liquids or harsh gases, the die is oil-filled and isolated behind an SS316L diaphragm (WPCK series).
Sensor tekanan dan ikhtisar perbandingan pemancar
| Kategori | Model | Catu daya / output | Rentang deteksi | Akurasi / nonlinier | Referensi Tekanan | Suhu operasi | Bahan shell | Perkataan |
| Sensor tekanan silikon yang tersebar | Wpak70 | 1.5mA / mv | -100kpa ~ 0 ~ 10kpa… 10mpa | ≤ ± 0,3%FS | Gauge / Absolute / Segited Gauge | -40 ℃ ~ 120 ℃ | - - | Keserbagunaan tinggi, desain kompak |
| Wpak69 | 1.5mA / mv | -100kpa ~ 0 ~ 10kpa… 10mpa | ≤ ± 0,3%FS | Gauge / Absolute / Segited Gauge | -40 ℃ ~ 120 ℃ | - - | Mirip dengan WPAK70 | |
| Wpak68 | 1.5mA / mv | -100kpa ~ 0 ~ 10kpa… 100mpa | ≤ ± 0,3%FS | Gauge / Absolute / Segited Gauge | -40 ℃ ~ 120 ℃ | - - | Versi rentang yang diperluas | |
| Wpak67 | 1.5mA / mv | 0 ~ 10kpa… 2.5mpa | ≤ ± 0,3%FS | Tekanan diferensial | -40 ℃ ~ 120 ℃ | - - | Untuk aplikasi diferensial | |
| Wpak66 | 1.5mA atau 10v / mv | 6mpa ... 60mpa | ≤ ± 0,3%FS | Pengukur tertutup | -40 ℃ ~ 120 ℃ | - - | Desain Tertutup untuk Rentang yang Lebih Tinggi | |
| Wpek65 | 1.5mA atau 10v / mv | -100kpa ~ 0 ~ 10kpa… 16mpa | ≤ ± 0,3%FS | Gauge / Absolute / Segited Gauge | -40 ℃ ~ 120 ℃ | - - | Sensor tujuan umum | |
| Wpak64 | 1.5mA atau 10v / mv | -100kpa ~ 0 ~ 10kpa… 25mpa | ≤ ± 0,3%FS | Gauge / Absolute / Segited Gauge | -40 ℃ ~ 120 ℃ | - - | Cakupan rentang sedang | |
| Wopak63j | 1.5mA / mv | -100kpa ~ 0 ~ 10kpa… 100mpa | ≤ ± 0,3%FS | Gauge / Absolute / Segited Gauge | -40 ℃ ~ 120 ℃ | - - | Versi J-Type untuk pemasangan khusus | |
| Wpak63 | 1.5mA atau 10v / mv | -100kpa ~ 0 ~ 10kpa… 100mpa | ≤ ± 0,3%FS | Gauge / Absolute / Segited Gauge | -40 ℃ ~ 120 ℃ | - - | Serbaguna dengan berbagai macam | |
| Sensor tekanan keramik | WPAH01 | 2–20V / mV | 0 ~ 200kpa ... 40mpa | ≤ ± 0,3%FS | - - | -40 ℃ ~ 125 ℃ | - - | Resistensi kimia tinggi |
| Sensor Tekanan Tertutup Plastik | WPAS12 | Digital dan analog | 15–115kpa | - - | - - | -40 ℃ ~ 125 ℃ | - - | Hemat biaya, kompak |
| WPAS02 | Digital dan analog | 10kpa ~ 100kpa | - - | - - | -20 ℃ ~ 80 ℃ | - - | Sensor Dasar untuk Udara/Gas | |
| WPAS01 | Digital dan analog | 10kpa ~ 100kpa | - - | - - | -40 ℃ ~ 125 ℃ | - - | Toleransi suhu tinggi yang kuat | |
| Pemancar tekanan silikon tersebar | Wpck81 | 4–20mA, RS485 | 0 ~ 1M… 200MH₂O | ± 0,5%FS / ± 1%FS | Tekanan pengukur | - - | Baja tahan karat | Untuk pengukuran tingkat tingkat dalam dan tangki |
| Wpck62 | 4–20mA (opsional) | 0 ~ 35kpa ... 25Mpa | ± 0,5%FS | Gauge / Absolute / Segited Gauge | - - | Baja tahan karat | Opsi utas yang kompatibel secara luas | |
| Wpck08 | 4–20mA, RS485 | 0 ~ 200MH₂O | ± 0,5%FS | Tekanan pengukur | - - | Baja tahan karat | Versi tahan ledakan | |
| Wpck07 | 4–20mA, 0.5–4.5V, 0–5V, 1–5V, 0–10V, 1–10V | -100kpa ~ 0 ~ 10kpa… 100mpa | ± 0,5%FS | Gauge / Absolute / Segited Gauge | - - | Baja tahan karat | Jenis output rentang penuh | |
| Wpck05 | 0.5–4.5V, 0–5V, 1–5V, 0–10V, 1–10V | -100kpa ~ 0 ~ 10kpa… 100mpa | ± 0,5%FS | Gauge / Absolute / Segited Gauge | - - | Baja tahan karat | Opsi Output Tegangan | |
| WPCK03 | I²C, 4-20Ma, 0,5-4,5V dan banyak lagi | -100kpa ~ 0 ~ 10kpa… 100mpa | ± 0,2%FS, ± 0,5%FS (khusus) | Gauge / Absolute / Segited Gauge | - - | Baja tahan karat | Jenis sinyal yang fleksibel, akurasi tinggi | |
| Pemancar tekanan keramik | WPCH04 | 0.5–4.5V (dapat disesuaikan) | 0.2mpa… 40mpa | 0.1%FS (default) | - - | - - | Baja tahan karat | Inti keramik presisi tinggi |
| WPCH01 | 4–20mA, 0/1–5/10v, 0.5–4.5V | 0.2–5mpa | 0.1%~ 5.0%FS (default 2.0%) | - - | - - | Baja tahan karat | Output yang dapat disesuaikan dan serbaguna | |
| WPBH01 | Tegangan proporsional (0,5-4,5V) | 2–400 bar (dapat disesuaikan) | 0.5%, 1%, 2%(default), 3% | - - | - - | Baja tahan karat | Kisaran tekanan luas | |
| Pemancar pengumpulan mikro kaca | Wpck89 | Digital dan analog | 0 ~ 100 /150 / 250/500 psig | ± 1%FS | - - | - - | Baja tahan karat | Sangat kuat dan stabil secara termal |
Panduan Seleksi
| Gunakan kasing | Mode & Range | Model yang Direkomendasikan | Keluaran | Catatan |
|---|---|---|---|---|
| Weather/altitude reference | Mutlak 300–1100 hPa | WPAS01 | 00,5–4,5V | Calibrate at site altitude; average samples for stability. |
| Cleanroom & HVAC duct static | ΔP ±25…±1000 Pa | Wpak67 | 0–10 V / 4–20 mA / I²C | Equal-length tubing; enable averaging 0.5–3 s. |
| Pneumatics & compressors | Ukuran 0–10/16 batang | WPCK07 / WPCK05 | 4–20 mA / 0–10 V | Add snubber for pulsation; shielded cable on long runs. |
| Water/RO skids & building loops | Gauge 0–6/10/16 bar | Wpck62 | 0–10 V / 4–20 mA | Panel-friendly; select seals for temperature and medium. |
| Pengukur/kepala pintar OEM | Gauge 0–10/16 bar (core) | Wpak66 | 0.5–4.5 V (board) | Add your ADC/display; private labeling available. |
Threads: G1/4, 1/4-NPT, M14×1.5; Electrical: M12, DIN, Deutsch/Packard, pigtail (per model).
Applications & Industries
HVAC & Cleanrooms
Duct static, room pressurization, filter status and VAV control using ΔP cores/transducers.
Pneumatics & Compressors
Manifolds, regulator monitoring, leak and energy programs in plant air systems.
Water & Process Lines
RO/UF skids, building water loops, boiler auxiliaries with isolated SS316L transmitters.
Instruments & Test Benches
Fast response channels for labs and OEM devices; ratiometric or 0–10 V outputs.
Weather & Altitude
Barometric reference in stations, drones and environmental compensation channels.
OEM Smart Gauges
Private-label gauge heads built on WPAK66/64 with your display and enclosure.
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Meminta konsultasi
Integration & Installation
Board-level (0.5–4.5 V/I²C): Use a stable 5 V supply, short traces to ADC, and good ground. Average samples (e.g., moving average) to reduce vibration noise.
Transmitters (0–10 V / 4–20 mA): 12–36 V supply; shielded cable; ground at one end; 4–20 mA preferred for long/noisy runs. Add a snubber for pulsation.
- Vent gauge sensors correctly; avoid trapped pressure.
- For ΔP, keep tubes equal length; add hydrophobic filters/drip loops.
- Confirm overload/burst vs. transients (water hammer, compressor ripple).
Ordering & Bulk Purchasing
Cara Menentukan
- Mode & range (Gauge/Absolute/ΔP; units & span)
- Output (0.5–4.5 V, I²C, 0–10 V, 4–20 mA)
- Medium & temperature (air, water, process)
- Process connection (G1/4, 1/4-NPT, M14×1.5, barbed, manifold)
- Electrical interface (M12, DIN, Deutsch/Packard, pigtail, board)
- Docs required (test report, calibration certificate, labeling)
Ketentuan Program
- Sampel untuk validasi
- Penetapan harga berjenjang untuk jadwal volume
- Private labeling & custom packaging
- Rolling forecast & safety stock options
Sensor Tekanan Diferensial vs Transduser vs Pemancar
| Perangkat | Keluaran | Penggunaan Khas | Kelebihan | Pertimbangan |
|---|---|---|---|---|
| ΔP Sensor (papan/kompak) | Ratiometri / I²C / SPI | Perangkat tertanam, instrumen | Kecil, berdaya rendah, hemat biaya | Membutuhkan perangkat elektronik dan penutup host |
| ΔP Transduser | 0–10 V / 4–20 mA | Pengukuran PLC/DAQ | Kabel sederhana, kabel panjang | Tampilan/relai eksternal tidak disertakan |
| Pemancar ΔP | AC + enclosure (sering dipajang/relay) | Pemasangan di lapangan, pemasangan panel | Tangguh, ramah penginstal | Ukuran terbesar dan biaya tertinggi |
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Pertanyaan yang Sering Diajukan (FAQ)
What is a MEMS (piezoresistive) pressure sensor?
A silicon diaphragm with diffused resistors forms a Wheatstone bridge. Pressure changes resistance; the ASIC outputs a temperature-compensated, linear signal.
When should I choose gauge vs absolute vs differential?
Gauge for lines/tanks, absolute for barometric/altitude/reference, differential for ΔP across ducts, filters and flow elements.
Can MEMS measure liquids safely?
Yes—use isolated, oil-filled transmitters (WPCK series) that protect the die behind an SS316L diaphragm.
Which output suits my controller?
0.5–4.5 V or I²C for embedded devices; 0–10 V/4–20 mA for PLC/BMS. Choose 4–20 mA for long/noisy runs.
How to deal with pulsation and surges?
Add a snubber/restrictor, mount away from hammer sources, and verify overload/burst ratings vs. peak spikes.
Apakah Anda menyediakan dokumentasi kalibrasi?
Yes—test reports are standard; calibration certificates and serialized labels are available on request.
