Explosion-proof ultraviolet flame detector

Explosion-proofDLH－105UltravioletFireFlame detectors are primarily used for flame detection in gas industrial burners. They offer reliable detection performance, capable of eliminating the effects of carbon buildup and wiring distribution capacitance. They are sensitive only to flames and do not react to high temperatures, radiation, or convection, featuring strong anti-interference capabilities.

I. Main Technical Specifications    

Power Voltage220V　±10%　50/60HZ

Explosion-proof rating: BT4 IP65

3Flame Detection - Ultraviolet Flame Detector (UV Probe)

4.Detection response time ≤ 1 second

5Temperature at the front end of the ultraviolet probe; -40℃- 80℃    

6Probe-to-detector connection distance≤200 meters (length to be processed according to on-site requirements)

7.Explosion-proof shell dimensions ：300*200*150mm

Figure 2 shows the wiring terminals of the fire detection module.

    1Power connectionHotlineL                    2. Power inletNeutral wireN

    3. In processProbe connection wire3. Connect the probe lead wire 4

    5. Follow the normally closed contact of the first group of switch points             

    6. Common terminal of the switch points in the first group           

    7. Connected to the normally open contact of the first group of switch points

    8. Continuity at the normally open contact of the second group of switches

    9. Common terminal of the switch contact in Group 2

    10. Normally closed contact of the second set of switch terminals

IV. Installation

 Installation

DLH－105UV flame detectorIt is a non-contact flame detector. Please aim the probe at the flame during installation.The temperature range for the probe use is80The probe must be vented and cooled before the detection channel when used on burners or other high-temperature equipment. The diameter of the detection channel must not be less than Φ18, and the installation thread of the probe is1 inch。

This productInspectionThe distance will increase with the enhancement of flame radiation intensity and the widening of the detection channel, but it cannot exceed8Meters.

2. Debugging

The DLH-105 UV flame detector module is connected to a 220V power source. The power indicator light is on, the flame is burning, the detection indicator light is on, and two sets of switch signals are output. When the flame extinguishes, no switch signals are output. If the AC power source used by the user is an ungrounded power source, such as powered by an isolation transformer, please ground one wire of the power source.

Six. Troubleshooting

The burner is on fire, but the detector shows no flame. It might be due to dust covering the probe lens. Please clean the quartz lens of the probe. If the flame is still not detected after cleaning, please contact the manufacturer!

2. Should the lens of the probe be accidentally broken during installation or use, do not substitute it with a standard glass plate, as standard glass does not transmit the ultraviolet rays produced by the flame.

Seven, note.

1. Variable frequency drives offer unparalleled advantages in industrial production, yet due to the high-power diode rectification and high-power transistor inversion involved, they generate higher harmonic currents in the input-output circuits, causing interference to the power supply system, load, and adjacent electrical equipment. This issue is particularly pronounced in high-precision instruments and computer control systems, which have stringent anti-interference requirements. Therefore, for power supplies surrounding flame detectors with variable frequency drives, an isolated power supply must be added at the input terminal of the flame detector to strictly prevent higher harmonic currents from damaging or puncturing the flame detector.