Deskripsi
Electric Contact Secondary Instrument
Model : DQS-76/03
Brand : CHANGCHUN BOILER INSTRUMENT
Product Overview
The DQS-76/03 is an intelligent electric contact secondary instrument used to monitor and display water levels in boiler drums and related vessels. It works in tandem with electrode-type level gauges and uses conductivity differences between steam and water to determine level positions. It’s widely deployed in thermal power stations, chemical plants, and metallurgical systems.
Specifications:
| Parameter | Value / Description |
|---|---|
| Model | DQS-76/03 |
| Function | Secondary display and control for electrode level gauges |
| Display Type | LED digital + light bar indication |
| Power Supply | AC 220V ±10%, 50Hz ±1Hz |
| Alarm Output | Dry contact, AC220V, 1A |
| Liquid Resistance Range | 0–500 kΩ (automatic tracking) |
| Lead Length | ≤ 200 m |
| Operating Temperature | −10°C to +45°C |
| Humidity Tolerance | ≤ 85% RH |
| Communication | Optional PC interface for remote monitoring |
| Compatibility | Works with DQS-76 series electrode level gauges |
Material Composition:
- Enclosure: Industrial-grade ABS or powder-coated steel
- Internal Components: PCB with corrosion-resistant soldering
- Connectors: Shielded terminals with anti-oxidation coating
- Mounting Frame: Galvanized steel or aluminum
All components meet Chinese industrial instrumentation standards and are suitable for high-humidity environments.
Dimensions (Typical):
| Component | Dimensions (mm) |
|---|---|
| Front Panel | ~150 × 150 |
| Depth | ~120 |
| Mounting Hole Spacing | ~130 × 130 |
Application Scope:
- Boiler Drum Water Level Monitoring
- High/Low Pressure Heater Level Control
- Deaerator and Evaporator Monitoring
- Water Tank Level Display
- Alarm Node Output for Safety Systems
Used extensively in power generation, chemical processing, and metallurgical operations.
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