Features and Applications of Explosion-Proof Telephones

An Overview of Explosion-Proof Telephones

Explosion-proof telephones are designed with a special anti-explosion structure, enabling them to operate safely in complex, harsh, and potentially explosive environments. Most power plants, industrial and mining facilities, and chemical factories install this communication equipment. Additionally, these explosion-proof telephones not only possess anti-explosion features but also offer basic calling functions, which can be utilized by simply connecting to a standard telephone line.

Currently, there are mainly two types of explosion-proof telephones on the market: intrinsic safety explosion-proof telephones and隔爆型 explosion-proof telephones. However, the majority of the market uses隔爆型 explosion-proof telephones due to their broader applications and higher performance compared to intrinsic safety models. Additionally, the housing design of隔爆型 explosion-proof telephones boasts a high degree of sealing, which also makes them waterproof. According to experimental tests, the waterproof level of隔爆型 explosion-proof telephones can reach P66, a figure that is comparable to very professional waterproof telephones.

Section Two: The Working Principle of Explosion-Proof Telephones

Explosion-proof telephones were originally designed for use in flammable and explosive environments such as coal mines, typically employed in H-2 grade facilities within factories and mines. The production of explosion-proof telephones must comply with the "Interim Provisional Regulations for the Manufacturing and Inspection of Safety Spark-Type Explosion-Proof Electrical Equipment issued by the Ministry of Machinery, the Ministry of Coal, and the Ministry of Petrochemical Industry," and meet the H-2 grade explosion-proof requirements.

The explosion-proof telephone uses protective components and safety barriers, ensuring the reliability of its spark-proof performance. Its bell coil, induction coil, and other parts are sealed with epoxy resin, making the explosion-proof telephone safe and reliable for use in oxygen chambers, classifying it as an intrinsically safe device.

Section III: Structural Materials

The explosion-proof telephone's housing is made of aluminum alloy casting with a static powder coating on the surface, offering excellent impact resistance and protective properties. The keypad of the explosion-proof telephone is made of stainless steel, while the handle is designed with outdoor public telephone specifications. The handle cord is a metal sheathed cable rope commonly used for outdoor public telephones. The circuit components are procured and produced according to outdoor standards, with the circuit undergoing strict explosion-proof and protective treatments. The explosion-proof telephone is available with an anti-noise handle (also known as an explosion-proof anti-noise telephone), ensuring clearer communication in high-noise environments.

Four: Explosion-proof Telephone Technical Specifications

Environmental Temperature: -45 to +60℃

2. Relative Humidity: ≤95%

Atmospheric Pressure: 80～110 kPa

4. Environmental Noise: ≤60dB

Ex d ib II BT 6

6. Protection Level: IP67

7. Frequency Range: 300-3400 Hz

8. Ringtone Level: ≥70 dB

Five: Application Scope of Explosion-Proof Telephones

Applicable for explosive gas environments in Zones 1 and 2

◆ Suitable for IIA, IIB Class Explosive Gas Environments

Applicable to Combustible Dust Environments in Zones 20, 21, and 22

◆ Suitable for T1~T6 temperature categories

Broadly used in hazardous environments such as oil exploration, chemical industry, refining, and at locations like oil depots, offshore oil platforms, and oil tankers.

Jowu explosion-proof telephone features:

The telephone can be combined with a programmable exchange and a coupler to form an independent communication system.

◆Directly Connect to Telecommunications Networks

After the call system is composed, each phone is an independent workstation, and a single failure does not affect the entire system's operation.

The product features an automatic gain function after being integrated into a call system, ensuring that the volume of speech remains consistent regardless of distance or the number of telephones.

◆ Phone Case Design: Waterproof, dustproof, no need for a water-resistant cover, stylish and practical.

The internal circuit of our telephones utilizes internationally standard dual-sided integrated circuits, offering advantages such as accurate dialing, clear通话, and stable performance.

◆ Aluminum alloy die-cast shell, featuring high mechanical strength and strong impact resistance.

The outer shell surface is high-temperature electrostatic spray painting, with excellent antistatic properties and eye-catching colors.

◆ Our company independently produces key components such as handles, hangers, and keyboards, with strict quality control and a fast response to after-sales feedback.

How to Use Jiuwo Explosion-Proof Telephones

1. The caller picks up the receiver and dials the recipient's phone number → The recipient's phone rings

2. The called party hears the ringtone → picks up the handset to answer the call, and both parties engage in a normal conversation.

The call has ended, and the receiver is hung back.

4. When initiating a call, press the "R" key to dial the last called number.

Jiwo explosion-proof telephone sets - Product design and installation dimensions

Our Core Values: Altruism, Craftsmanship, Integrity, Perseverance, Innovation.

Ningbo Jiuwo Explosion-Proof Technology Co., Ltd. established the "Jiuwo" brand operation team in its early stages. With its high-quality products and services, Jiuwo has become a network supplier for many well-known enterprises at home and abroad. Our products are widely used in industries such as pipeline corridors, highways, tunnels, oil, chemicals, coal, electricity, railways, metallurgy, ships, and fire protection. They are popular in all provinces and municipalities across China and have been exported to over 20 countries, receiving favorable reviews from customers.