Product Overview
Engineered for uncompromising reliability in demanding industrial environments, the SP-25 Series High Protection Communication Digital Pressure Switch combines rugged durability with smart factory connectivity. Built with an IP65 protection-rated enclosure, this controller effortlessly withstands dust ingress and multi-directional water jets, making it the perfect solution for harsh manufacturing zones. Beyond its physical resilience, the SP-25 seamlessly integrates into Industry 4.0 ecosystems via the standard MODBUS RS485 protocol, enabling centralized SCADA monitoring while intelligently retaining a traditional switching output for localized failsafe control.
Product Highlights
IP65 Washdown Protection
Strictly complies with IP65 standards, ensuring the internal electronics are fully shielded against low-pressure water jets and heavy industrial dust, extending the lifespan in aggressive environments.
MODBUS RS485 Integration
Features native RS485 communication protocols allowing up to 32 discrete units to be daisy-chained for remote parameter configuration, continuous data reading, and centralized troubleshooting.
Unmatched Application Compatibility
Boasts a rich selection of optional accessories and connection fittings (from M5 to RC1/8), backed by a hybrid output architecture that preserves 1-channel traditional switching alongside the digital bus.
Comprehensive Technical Specifications
| MODEL |
High-Protection Universal Gas Type |
High-Protection Universal Fluid Type |
| (Low Pressure) |
(High Pressure) |
(Low Pressure) |
(High Pressure) |
(Ultra-High Pressure Type) |
Rated pressure range |
-101.3~101.3kPa |
-0.101~1.000MPa |
-101.3~101.3kPa |
-0.101~1.000MPa |
-0.101~2.500MPa |
Setting pressure range |
-105.0~105.0kPa |
-0.105~1.000MPa |
-105.0~105.0kPa |
-0.105~1.000MPa |
-0.105~2.500MPa |
Max withstand pressure |
500kPa |
1.5MPa |
500kPa |
1.5MPa |
5.0MPa |
Applicable Media |
Filtered air, Non-corrosive/Non-flammable gas Compliant with ISO8573-1:2010[7:4:4] |
Liquids or Gases Non-Corrosive to SUS304 and SUS316 |
Power supply voltage |
12~24V DC ±10% |
Current consumption |
≤45mA (With no load) |
Display Resolution Under Different Pressure Units |
kPa |
0.1 |
1 |
0.1 |
1 |
1 |
| MPa |
- |
0.001 |
- |
0.001 |
0.001 |
| kgf/cm2 |
0.001 |
0.01 |
0.001 |
0.01 |
0.01 |
| bar |
0.001 |
0.01 |
0.001 |
0.01 |
0.01 |
| psi |
0.01 |
0.1 |
0.01 |
0.1 |
0.1 |
| mmHg |
0.1 |
- |
0.1 |
- |
- |
| inchHg |
1 |
- |
1 |
- |
- |
Comparative Output *1 |
NPN Open Collector Output Max load current: 100mA Max supply voltage: 30V DC Internal voltage drop: 1.5V or less
PNP Open Collector Output Max load current: 100mA Max supply voltage: 24V DC Internal voltage drop: 1.5V or less
|
MODBUS Function *2 |
Yes |
Display Accuracy |
±2% F.S. ±1 digits (Operating temperature 25±3°C) |
| Repeatability |
±0.2% F.S. ±2 digits |
| Response time |
2.0ms, 50ms, 100ms 250ms, 500ms, 2000ms 3000ms, 5000ms Optional |
| Display |
3 color (Red/Green/Yellow Orange) Display (Sampling rate: 4 times/1sec) |
Temp. Characteristics |
±2% F.S. detected pressure (25°C) at temperature range of 0~50 °C |
Operating Environment |
0~50°C (No condensation/icing) ; 35~85%RH (No water droplets) |
Storage Environment |
-10~50°C (No condensation/icing) ; 35~85%RH (No water droplets) |
| Protection |
IP65 |
| Pressure port |
M5 Female Thread |
R2: Ext 1/4, Int M5 S: SCR1/4 face-seal, compatible with VCR 1/4 |
| Weight |
70g |
110g |
| Accessories |
1 terminal power cable, 1 user manual |
Examples of Supported General Media
- • General Compressed Air
- • Nitrogen (N2)
- • Argon (Ar)
- • Vacuum Suction Lines
- • Clean Dry Air (CDA)
- • Environmental Control Gases
- • Carbon Dioxide (CO2)
- • Non-corrosive Gases
- • Inert Industrial Gases
Circuit Wiring Diagram & RS485 Integration
Industrial network topology relies on correct RS485 polarization. Ensure the White wire (485A) and Orange wire (485B) are consistently routed throughout your daisy chain to guarantee stable remote reading from the upper PLC, while leveraging the Black wire for immediate local load switching.
Wiring Definitions & Bracket Accessories:
- • 5-Core Connection: Brown (DC+), Black (OUT1), White (485A), Orange (485B), Blue (DC-).
- • MODBUS Bus: White/Orange pair handles bi-directional data flow for models 030/031.
- • Bracket Mounts: Compatible with specific XP-BT-04 (L-Type) and XP-BT-05 (Z-Type) metal brackets.
- • Panel Arrays: XP-PA-03 bracket securely mounts the IP65 body into control panels.
Specialized Application Scenarios
The SP-25 bridges the physical toughness required on the factory floor with the digital intelligence necessary for centralized enterprise management:
Harsh Environment Automation The IP65 rated enclosure perfectly withstands moisture, coolant splashes, and heavy airborne dust found in metalworking and heavy machinery sectors.
Smart Factory Central SCADA Utilize MODBUS RS485 to connect up to 32 high-protection switches to continuously harvest real-time pipeline pressure metrics for preventative maintenance.
CNC Machining Centers Deploys flawlessly next to active milling machines where standard sensors fail, providing reliable pneumatic tool clamping confirmation.
Redundant Safety Systems While the RS485 logs historical pressure drops to the server, the retained 1-channel NPN/PNP output instantly halts machinery upon detecting critical vacuum loss.
Frequently Asked Questions (FAQ)
Q: What does the IP65 rating on the SP-25 mean in practice?
A: The IP65 rating signifies that the switch enclosure is completely "dust tight" and protected against "low-pressure water jets" from any direction. This makes it highly reliable in wet, dusty, or washdown-heavy factory environments.
Q: How many devices can be connected via the MODBUS RS485 network?
A: Using the standard MODBUS protocol, you can reliably interconnect up to 32 units on a single daisy-chain bus, streaming data directly back to your central upper computer or PLC for comprehensive smart manufacturing integration.
Q: Why does the SP-25 retain a traditional switch output alongside RS485?
A: Retaining the 1-channel discrete output ensures absolute failsafe operation. It guarantees that critical hardware thresholds can trigger immediate local safety actions, even if the industrial network experiences latency or downtime.
Company Advantages & Factory Strength
