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| Brand | Bigdipper |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TBD5 DS1390 |
| Output Signal | 4–20 mA (configurable linear or control mode) |
| Communication Interfaces | RS232, RS485 (selectable baud rate), IEEE 1451.1 NCAP compliant |
| Enclosure Rating | NEMA 6P / NEMA 7 / NEMA 8 / NEMA 9 / IP67 |
| Explosion Protection | Intrinsic Safety (Ia), Class I Div 1 Groups A/B/C/D |
| Operating Temperature | −40 to +85 °C (max 125 °C transient) |
| Storage Temperature | −51 to +125 °C |
| Humidity Range | 0–95% RH (non-condensing) |
| Power Supply | 12/24 V DC ±20%, <100 mW total consumption |
| Repeatability | ±0.02% FS |
| Accuracy | <±1.0% of full scale |
| Response Time | <100 ms |
| Long-Term Stability | ±1% FS per year |
| Wetted Materials | 316SS or 304 stainless steel |
| Measuring Principle | Dual-point differential pressure (ΔP) with temperature-compensated density calculation |
| Probe Immersion Length Options | 30 cm, 60 cm, or 30 cm (model-dependent) |
| Max Working Pressure | 0.0345–0.21 MPa (model-dependent) |
| Display Interface | Built-in 2×16 character LCD driver with external keypad (no PC required) |
| Data Logging | Configurable intervals (hourly,定点, daily, monthly, quarterly, annual) |
| Temperature Compensation | Embedded real-time thermal correction algorithm |
| Digital Outputs | 2 × open-collector 5 V switches |
| Real-Time Clock | Integrated |
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