The JPT201 CAN-bus output piezoresistive pressure transmitter features adjustable zero-point and full-scale output. It utilizes a highly stable and reliable pressure sensor combined with high-performance, application-specific transmitter circuitry, ensuring overall stability and reliability. It is widely used for fluid pressure monitoring and control in industries such as petroleum, chemicals, electric power, vehicle testing, and defense.
Related guides: Inline Pressure Transducer Guide, Smart Pressure Transmitters (4–20 mA, HART, RS485 Modbus), and Gauge vs. Sealed-Gauge Pressure Selection.
| Parameter | Specification |
|---|---|
| Measuring range | −0.1…0~0.01…260 MPa (−1…0~0.1…2600 bar) |
| Pressure type | Gauge / absolute / sealed gauge |
| Over-pressure | 1.5 × full scale, or 260 MPa, whichever is lower |
| Accuracy | ±0.5% FS, ±0.25% FS, ±0.1% FS (typical 0.25%) |
| Long-term stability | ±0.3% FS/year (max) |
| Zero temperature error | 0.1% FS/°C (≤100 kPa); 0.05% FS/°C (>100 kPa) |
| Span temperature error | 0.1% FS/°C (≤100 kPa); 0.05% FS/°C (>100 kPa) |
| Compensated temperature | 0~50°C (extendable) |
| Operating temperature | −30~80°C |
| Storage temperature | −40~120°C |
| Power supply | 12 VDC |
| Output signal | CAN 2.0B — CANopen or custom CAN protocol |
| Load resistance | ≤ (U−12)/0.02 Ω, ≥15 kΩ (4-wire) |
| Ingress protection | IP65 / IP67 / IP68 (optional) |
| Electrical connection | DIN 43650 connector (IP65) or direct cable outlet (IP67) |
| Protection | Short-circuit, reverse-polarity, over-pressure |
| Explosion protection | Exd IIC T6 Gb (optional) |
Materials of Construction:
| Part | Material |
|---|---|
| Housing | Stainless steel 304 |
| Pressure port | Stainless steel 304 |
| Diaphragm | 316L ultra-low-carbon stainless steel |
| Seal gasket | Fluororubber (FKM) |
| Connector housing | Plastic |
For aggressive or corrosive media, tantalum diaphragm with Hastelloy C pressure port is available (material code 35). Always confirm that the wetted parts are compatible with the process media before ordering.
| Position | Code | Selection |
|---|---|---|
| 1. Series | JPT201 | CAN bus pressure transducer |
| 2. Range | [0~X] MPa | Any range from −0.1 to 260 MPa (−1 to 2600 bar) |
| 3. Output | CZ | Custom CAN protocol |
| CO | CANopen protocol | |
| 4. Material (diaphragm / port / housing) | 22 | 316L SS / SS / SS |
| 24 | 316L SS / 316L SS / 316L SS | |
| 35 | Tantalum / Hastelloy C / SS | |
| 5. Connection & options | B1 | Hirschmann connector |
| B2 | Direct cable outlet | |
| B3 | 4-pin aviation connector | |
| C1 | M20×1.5 external thread | |
| C3 | G1/2 external thread | |
| PC1 | Flush diaphragm, M20×1.5 external thread | |
| PC3 | Flush diaphragm, G1/2 external thread | |
| C* | Custom pressure connection | |
| d | Flameproof Exd CT6 (hazardous area) | |
| 6. Pressure type | G | Gauge |
| S | Sealed gauge | |
| A | Absolute |
Example: JPT201 – [0~1MPa] – CO – 22 – B1C1 – G — CANopen output, 316L diaphragm with SS port and housing, Hirschmann connector, M20×1.5 thread, gauge pressure.
CAN (Controller Area Network) is a serial communication protocol bus developed by Bosch, a German company. It uses twisted-pair cable to transmit signals and is one of the most widely used fieldbuses in the world.
A single twisted pair carries the pressure value plus diagnostics, and several transducers share that one bus instead of each needing its own analog pair back to the controller. This cuts wiring on mobile machinery, test rigs, and distributed systems, and the digital value carries no signal loss over cable length—the way an analog output does.
The transducer reports pressure as a 4-byte IEEE floating-point number, high byte first (big-endian), in kPa. You can poll it on demand or set it to stream at fixed intervals, and you can run a zero-point calibration command over the bus without taking the unit off the machine.
CAN 2.0B defines only the physical and data-link layers, so the application layer below is defined on top of the standard frame format.
| Parameter | Value |
|---|---|
| Bit rate | 125 kbit/s |
| Frame type | Standard data frame |
| Host → transducer ID | 0x001 (configurable) |
| Transducer → host ID | 0x101 (configurable) |
| Data format | 4-byte IEEE float, big-endian (high byte first), unit kPa |
Command set:
| Function | Send | Return |
|---|---|---|
| Zero calibration | 31 05 00 00 00 00 00 00 | 31 06 00 00 00 00 00 00 |
| Start continuous transmission | 31 01 xx 00 00 00 00 00 | 31 02 00 00 00 00 00 00, then 31 03 00 00 F1 F2 F3 F4 |
| Stop continuous transmission | 31 00 00 00 00 00 00 00 | 31 10 00 00 00 00 00 00 |
| Pressure query (single read) | 31 07 00 00 00 00 00 00 | 31 08 00 00 F1 F2 F3 F4 |
F1 F2 F3 F4 is the pressure value as a big-endian float in kPa. For continuous mode, xx sets the update interval:
| xx | Interval |
|---|---|
| 01 | 50 ms |
| 02 | 100 ms |
| 03 | 200 ms |
| 04 | 300 ms |
| 05 | 500 ms |
| 06 | 1000 ms |
A CANopen-protocol version is also available — specify output code CO when ordering.
Sino-Inst manufactures and supplies a comprehensive range of pressure sensors widely used for pressure monitoring in oil, gas, and chemical processes. Our sensors support customization of various output signals, such as 4-20mA, 0-10V, 0-5V, RS485, HART, and CAN. Please feel free to contact our sales engineers; we will provide a tailored pressure measurement solution based on your specific operating conditions.
Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.
Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.
Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.