The SMC ISE20C-R-02-W is a 3-screen high-precision digital pressure switch for general fluids, built for positive pressure measurement in industrial systems where clear visualization, fast response, and stable output are required. In SMC’s official product structure, this model belongs to the ISE20C(H) Series, which is the general-fluid version of the ISE20 platform and is designed for applications involving liquids and gases that do not corrode stainless steel 630 and 304. Unlike the standard air-service ISE20 variants, the ISE20C series is specifically positioned for broader media compatibility and uses stainless steel for the pressure sensor and fitting materials in contact with fluid.
For this exact part number, SMC’s web catalog identifies the configuration as follows: ISE20C = positive-pressure model for general fluids, R = NPN open collector, 2 outputs + analog voltage output, 02 = R1/4 port with M5 female threaded connection detail, piping direction rear ported, and W = lead wire with connector, 5-core, 2 m, with waterproof cover. This is therefore not just a generic pressure sensor, but a fairly specific digital pressure switch package suitable for machine builders and maintenance users who need switching outputs plus analog feedback in a compact body.
Product Overview
The ISE20C-R-02-W is intended for installations where the user needs more than a simple pressure reading. Its design combines digital indication, switching outputs, and analog signal output in one compact unit. That makes it suitable for automated equipment where pressure must be monitored locally by operators while also being transmitted to a controller or PLC. SMC describes the series as a 3-screen display high-precision digital pressure switch, and the official catalog highlights features such as visualization of settings, simple 3-step setting, easy screen switching, and delay time of 1.5 ms or less.
A key distinction of the ISE20C family is that it is for general fluids, not only clean compressed air. SMC specifies the applicable fluid as liquids and gases that do not corrode stainless steel 630 and 304, which expands its usefulness in process equipment, water-based systems, coolant monitoring, and other industrial circuits where an air-only pressure switch would not be appropriate.
Key Specifications
| Item | Description |
|---|---|
| Brand | SMC |
| Model | ISE20C-R-02-W |
| Series | ISE20C(H) |
| Product Type | 3-screen high-precision digital pressure switch |
| Media Class | General fluids |
| Pressure Type | Positive pressure |
| Rated Pressure Range | -0.100 to 1.000 MPa |
| Display/Set Pressure Range | -0.105 to 1.050 MPa |
| Output Type | NPN open collector, 2 outputs + analog voltage output |
| Port Specification | R1/4 |
| Piping Direction | Rear ported |
| Cable Option | 5-core lead wire, 2 m, with waterproof cover |
| Power Supply | 12 to 24 VDC ±10% |
| Enclosure | IP65 |
| Materials in Contact With Fluid | Pressure sensor: Stainless steel 630; fitting: Stainless steel 304 |
These values come from SMC’s official catalog and model-specific web catalog page for the ISE20C-R-02-W.
Product Weight
For this exact model, the weight can be derived directly from SMC’s official catalog because the part number identifies the port style and port direction precisely.
SMC states for the ISE20C(H) series:
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Body weight, rear ported, model 02: 51 g
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Lead wire with connector: +39 g
Because ISE20C-R-02-W is a rear-ported 02 model and the W option includes the 5-core 2 m lead wire with waterproof cover, the practical product weight for this configuration is:
Approximate net weight: 90 g
This is the most defensible public catalog weight for this exact configuration.
| Weight Item | Value |
|---|---|
| Body weight, rear ported 02 | 51 g |
| Lead wire with connector | +39 g |
| Approximate total assembled weight | 90 g |
For quotation or logistics use, the recommended wording is:
Product weight: approx. 90 g (catalog-based assembled weight for rear-ported 02 specification with lead wire).
Functional Advantages
Accurate pressure monitoring for industrial control
The ISE20C-R-02-W is designed for users who need precise pressure monitoring in compact automation systems. SMC lists display accuracy of ±2% F.S. ±1 digit, repeatability of ±0.2% F.S. ±1 digit, and analog output linearity of ±1% F.S. under stated conditions. These values make the unit suitable for repeatable machine control, alarm thresholds, and process confirmation where unstable or vague readings would be unacceptable.
Two switching outputs plus analog feedback
One of the strongest commercial advantages of this model is its output architecture. It offers two NPN open collector switch outputs together with an analog voltage output. This allows one device to support multiple control layers at the same time. For example, one output can be used for a low-pressure alarm, another for a process confirmation threshold, while the analog voltage signal is sent to a PLC or controller for continuous monitoring.
Compact design with strong readability
SMC’s ISE20 family is known for its 3-screen display, which improves visibility during setup and operation. In practical terms, this means the operator can view measured values and settings more efficiently than with simpler single-display units. SMC also emphasizes easy screen switching and simple 3-step setting, both of which matter in machine commissioning and maintenance work because they reduce configuration time and operator error.
Fast response for dynamic systems
The official catalog specifies a delay time of 1.5 ms or less, with additional anti-chattering settings available. That fast electrical response is useful in dynamic pneumatic and fluid-control applications where pressure changes occur quickly and the control system needs rapid confirmation rather than slow averaged feedback.
Technical Performance Summary
| Performance Item | Official Value |
|---|---|
| Rated pressure range | -0.100 to 1.000 MPa |
| Display/set pressure range | -0.105 to 1.050 MPa |
| Withstand pressure | 2 MPa |
| Power supply voltage | 12 to 24 VDC ±10% |
| Current consumption | 35 mA or less |
| Display accuracy | ±2% F.S. ±1 digit |
| Repeatability | ±0.2% F.S. ±1 digit |
| Analog output accuracy | ±2.5% F.S. |
| Analog output linearity | ±1% F.S. |
| Max. load current | 80 mA |
| Delay time | 1.5 ms or less |
| Enclosure | IP65 |
These figures are all from SMC’s official specifications for the ISE20C series.
Construction and Media Compatibility
The media-contacting materials are important in this model because the unit is intended for general fluids rather than air only. SMC specifies:
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Pressure sensor: stainless steel 630
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Fitting: stainless steel 304
This combination gives the device better suitability for non-corrosive industrial liquids and gases than standard air-only digital pressure switches. That does not mean it is universal for all chemicals, but it does mean it fits a broader range of machine applications such as industrial water circuits, utility lines, and certain process-media systems, provided the medium does not corrode the specified stainless materials.
Typical Applications
The ISE20C-R-02-W is well suited to equipment builders and maintenance teams in sectors such as packaging, process equipment, coolant handling, water management, semiconductor utility skids, and automated machinery where reliable pressure confirmation is required. Because the device combines local display, switch outputs, and analog voltage output, it can be used in systems that need both operator visibility and PLC-level integration. Its IP65 enclosure and waterproof-covered lead wire also support installation in harsher machine environments compared with low-protection indoor-only display switches.
Why This Model Is Commercially Useful
From a purchasing and engineering perspective, SMC ISE20C-R-02-W is a practical choice when the requirement is not just “measure pressure,” but “measure pressure cleanly, display it clearly, output it to control logic, and survive real industrial installation conditions.” The rear-ported layout helps with machine integration, the R1/4 connection is common in industrial piping, and the included cable option makes installation straightforward. Its output combination also reduces the need for separate pressure transducers and switching devices.
Summary
| Summary Item | Conclusion |
|---|---|
| Full model | SMC ISE20C-R-02-W |
| Product category | High-precision digital pressure switch |
| Series | ISE20C(H) |
| Service medium | General fluids |
| Pressure type | Positive pressure |
| Port | R1/4 |
| Output | 2 NPN outputs + analog voltage output |
| Protection | IP65 |
| Cable | 5-core, 2 m, waterproof-covered lead wire |
| Weight | Approx. 90 g |
| Main strength | Compact digital monitoring with switch and analog outputs |
SMC ISE20C-R-02-W is a compact, high-precision digital pressure switch for general fluids, intended for positive pressure monitoring up to 1.0 MPa, with two NPN switching outputs, analog voltage output, IP65 protection, and an approximate assembled weight of 90 g. It is a strong fit for industrial automation systems that require clear local indication, reliable electrical output, and stable monitoring performance.
