BOLL & KIRCH Remote / Digital Service
BOLLFILTER Digital Differential Pressure Indicator with Transmitter DPIT 4.66.7
Digital differential pressure indicator/transmitter for BOLLFILTER systems with LED status strip, analog output, programmable switch points, BollBox app access and DNV vibration class B; 24 VDC, up to 16 bar.
Description
The BOLLFILTER DPIT 4.66.7 (DDAT) combines a differential pressure indicator and transmitter. It measures the pressure difference between a high-pressure (P1) and low-pressure (P2) port with electronic sensors and outputs a proportional signal for remote monitoring and process control, replacing the mechanical DDA indicator 1:1 without modifications.
Key features
- LED strip changes from white to red as differential pressure rises, visible from a distance
- Starts automatically when the M12 connector is plugged in
- Absolute (IN/OUT) and differential pressure measurement for the whole system
- Programmable switch points, zero-point offset and 180° display rotation
- Integration with PLC, DCS and SCADA; real-time data, logging and trend analysis (flushing frequency, time between flushes)
- Smartphone access via QR code and the BollBox app, including data export and software updates
- No reed contacts, so no mechanical wear
Technical data
- Power supply: 24 VDC, 500 mA
- Max. operating pressure: 16 bar (versions up to 100 bar)
- Temperature: -40 °C to 150 °C
- Media resistance: as DPI, plus methanol
- Vibration resistance: DNV Vibration Class B (4.0 g)
Specifications
| Feature | DDAT | DDA |
|---|---|---|
| Output | Analog electrical signal for system control | Mechanical optical display (analog scale) Discrete contacts and optical display (one make contact, one switching contact) 4.36.2 |
| Measurement principle | Electronic pressure sensors | Mechanical diaphragm for measuring differential pressure |
| Absolute pressure measurement | Yes (IN/OUT) | No |
| Switch points | Yes, programmable | Yes (4.36.2), fixed, not programmable |
| Integration with control systems | Yes, integrates with PLC, DCS, SCADA for automation | No, does not transmit signals to control systems, only discrete switch points |
| Power supply | 24 VDC, 500 mA | Not required, purely mechanical |
| Max. operating data | Pman = 16 bar (can reach up to 100 bar) Tmax = 150 °C Tmin = -40 °C | Pman = 16 bar (canreach up to 100 bar) Tmax = 150 °C Tmin = |
| Resistance | Like DPI + methanol | / |
| Application | Manual differential pressure indication Operation, maintenance, diagnostics of automatic filters Continuous process monitoring and control | Manual differential pressure indication Operation, maintenance, and diagnostics of automatic filters |
| Real-time monitoring | Yes, provides continuous feedback to control systems | No, provides a static measurement value that must be monitored manually, only 2 switching points |
| Automation | Supports process control and automated decision-making | No automation or feedback to control systems |
| Accuracy | High accuracy, suitable for precise control and regulation | Moderate accuracy, sufficient for basic monitoring |
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