DPH Series Digital Pressure Sensor
High Precision Pressure Monitoring Switch
Safety Instructions
- Impact: Do not drop or knock the sensor, as internal damage to the sensing element may cause malfunction.
- Wiring: The tensile strength of the connection cable is 60N. Do not pull the cable with force exceeding this limit to prevent internal wire breakage.
- Media: Do not allow corrosive gases or fluids to contact the product. Ensure compatibility with the monitored media.
- Environment: Do not use in environments with heavy water vapor, condensation, or oil mist.
- Power: Always turn off the power supply before wiring. High voltage or power cables should be wired in a separate conduit to avoid electrical interference.
Panel Description
- Display: High-visibility 4-digit LED display (shows current pressure or setting value).
-
Indicators:
- OUT1 (Green LED) - Output 1 status
- OUT2 (Red LED) - Output 2 status
- Analog output (Orange LED)
- Keys: UP / DOWN keys for quick value adjustment; SET key for menu navigation and confirmation.
- Zero Point Reset: In standard measurement mode, press the UP and DOWN keys simultaneously to instantly reset the zero point.
Output Mode Judgment
1. Hysteresis Mode
Logic: Output turns ON when Pressure > (Setting P1 + Hysteresis). Output turns OFF when Pressure drops below P1. Prevents chattering near the setpoint.
2. Window Comparator Mode
Logic: Output turns ON when pressure is within the defined acceptable range [P1L, P1H]. Output turns OFF when pressure falls outside this range (incorporating hysteresis H at the boundaries).
3. Suction (Vacuum) Mode
Logic: Generally used for vacuum/suction applications. The output behavior is inverted compared to standard positive pressure mode (ON/OFF logic triggers based on vacuum threshold achievement).
4. Automatic Sensitivity Setting Mode
Logic: Sets reference values automatically based on teach-in pressure levels (e.g., sampling adsorption pressure vs. release pressure) to determine the optimal switching threshold without manual calculation.
Analog Output Characteristics
- Voltage Output: 1 ~ 5V (Linear output strictly relative to the rated pressure range, e.g., -100kPa ~ 1000kPa).
- Current Output: 4 ~ 20mA (Linear proportional output).
- Important Note: Do not connect a load directly between the 0V terminal and the Analog Output terminal, as this may permanently damage the internal analog circuit.
Electrical Specifications & Wiring
Internal Circuit Wiring
| Output Type | Wire Color | Function |
|---|---|---|
|
NPN Output (Common Positive) |
Brown | DC (+) 12-24V |
| Black | OUT 1 (Control Output 1) | |
| White | OUT 2 (Control Output 2) | |
| Orange | Analog Output (1-5V / 4-20mA) | |
| Blue | DC (-) 0V | |
|
PNP Output (Common Negative) |
Brown | DC (+) 12-24V |
| Black | OUT 1 (Control Output 1) | |
| White | OUT 2 (Control Output 2) | |
| Orange | Analog Output (1-5V / 4-20mA) | |
| Blue | DC (-) 0V |
Accessories Ordering
Note: The main unit ordering code depends on the exact pressure range and output type selected from the catalog. Below are the standard mounting accessory codes.
Mounting Accessories
| Accessory Item | Model Code | Description & Specs |
|---|---|---|
| Panel Mount Adapter | F-DPSEB |
Includes panel mounting frame and transparent protective front cover. Suitable for panel thickness: 1 ~ 5 mm. Required panel cutout size: 36 x 36 mm (±0.3). |
| L-Bracket | F-DPSLB |
Metal L-shaped bracket for robust wall or surface mounting. Includes required mounting screws. Mounting hole pitch: 20 mm. |
