Explosion proof human body static discharge alarm

AS6608-S Explosion proof Human Static Discharge Alarm

Explosion proof human static discharge alarm is an instrument suitable for human static discharge in flammable, explosive, and anti-static places. Its characteristic lies in the design of a reasonable human body static discharge resistor, which effectively controls the human body static discharge, prolongs the human body static discharge time, reduces the instantaneous human body static discharge energy, and enables the safe discharge of human body static electricity. At the same time, it can detect whether the contact between the human body and the static touch ball is reliable, and sound and light alarms indicate whether the static elimination is completed.

The design of explosion-proof human static discharge alarm refers to the following national standards:

GB12158-2006 "General Guidelines for Preventing Static Electricity Accidents"

GB5074-2002 "Design Code for Petroleum Storage"

Article 14.3.13 stipulates that due to the widespread use of artificial fabric clothing, artificial fabrics are prone to generate static electricity, which often accumulates on the human body. To prevent sparks that may be generated by static electricity, it is necessary to install devices to eliminate human static electricity on the operating platforms that enter the oil pump room, the top of the light oil tank, the light oil operation area, and the escalators or entrances in explosive hazardous areas. This static elimination device refers to handrails made of metal tubes, which should be touched by the human body before entering these places to eliminate static electricity.

SH3097-2000 "Design Specification for Static Electricity Grounding in Petrochemical Industry"

The human static discharge alarm has been certified by the National Center for Quality Supervision and Inspection of Explosion proof Electrical Products (NCEX) and meets the following standards:

GB3836.1-2010 Explosive Atmosphere Part 1: General Requirements for Equipment

GB3836.4-2010 Explosive Atmosphere Part 4: Equipment Protected by Intrinsic Safety Type "i"

The explosion-proof mark of the product is ExiaICT4 GC.

2. Working principle and composition of the product

1.Working principle

At present, some flammable and explosive hazardous areas still use direct grounding discharge of metal conductors to eliminate human static electricity. Although this method can eliminate human static electricity, it uses discharge between conductors to release electrostatic charges, with low release resistance, short static discharge time, and large instantaneous energy release, which may lead to the possibility and inevitability of human electric shock or fire and explosion accidents.

The human body static discharge alarm compensates for the shortcomings of current human body static discharge methods, with a reasonable human body static discharge resistance, extending the human body static discharge time, reducing the instantaneous release energy of human body static electricity, and effectively avoiding the occurrence of fire and explosion accidents and the phenomenon of human body static electric shock.

3. Product features

1. Ultra low power consumption design, no need to replace the battery during normal use

2. Touch sensitive, without mechanical moving parts

3. Special topic: Epoxy resin sealing, anti-corrosion, waterproof, and moisture-proof

4. Explosion proof touch ball, safely releases static electricity, and does not produce electric shock when in contact with the human body

5. Sound and light alarm indicates that the contact between the human body and the explosion-proof touch ball is reliable and static electricity has been discharged

3Electrical parameters

1.Working power supply: High performance built-in lithium battery
2. Sleep current:<1mA
3. Working current:<5MA
4. Working temperature: -40 ° C℃~60℃
5. Response time:<1s
6. Grounding resistance: ≤ Ω 55
7. Explosion proof grade: ExiaICT4

8. Withstand static voltage: ± 20KV
9. Alarm method: Sound and light alarm (>90Db, 30cm straight-line distance measurement)

4. Mechanical parameters

1.Pole material: 304 stainless steel
2. Pole diameter: Φ 38mm
3. Wall thickness of pole: 1.0mm
4. Product height: 1000mm
5. Touch ball diameter: Φ 90mm
6. Installation flange wall thickness: 3.0mm
7. Grounding cable length: 3m straight PU cable