Signal Device

Your Professional Signal Device Supplier

Our goal is to become your true partner in the field of signal device in China. Anhui Hengtai Electrical Technology Co., Ltd. is a national-level high-tech enterprise. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

Intrinsically Safe Sound and Light Signal Device

Why Choose Us

01.

Production equipment

We have advanced production equipment, mainly including: CNC lathes, machining centers, laser cutting machines, automatic online coding machines, shearing machines, laser welders, welding robots, etc. more than 50 sets.

02.

Our certificates

We have 116 safety standard certificates, 28 authorized national patents, 6 software copyright certificates, and 20 scientific and technological achievement registration certificates.

03.

Production market

Our products are very popular in the market, and our sales areas are spread across many countries, mainly including Germany, Vietnam and Mongolia.

04.

Our services

All products are under the condition of correct installation, normal use and proper maintenance, and enjoy a one-year warranty from the date of acceptance of the installation and commissioning of the entire set of equipment. During the warranty period, the supplier will solve any quality problems of the main components free of charge.

Advantages of Signal Device

Multiple operating modes: The Intrinsically Safe Sound and Light Signal Device supports a variety of working modes, including continuous, intermittent, and triggered.

Remote control and monitoring: The Intrinsically Safe Sound and Light Signal Device can be remotely controlled and monitored via a network or other communication channel.

Low energy design: The Intrinsically Safe Sound and Light Signal Device's circuits and components are designed to be low energy, limiting the energy level of any potential electric sparks or heat impacts.

Explosion-proof measures: Additional explosion-proof measures are used, such as sealing design and flameproof enclosures.

Signal Devicer Specification

Product name	Signal device
Working Voltage	AC127V; Voltage fluctuation range: AC90~240V
Maximum Working Current	0.25A (127V)
Input Control Signal	One channel of non-intrinsically safe active contact input with control signal input voltage AC127V; one channel of intrinsically safe passive input
Dial Signal and Voice Signal Intensity	≥85dB(A)
Light Signal	Emission method: LED indication, red indicator light for signal, red indicator light for voice prompt alarm; Visibility: Not less than 20m (in darkness).

Features of Signal Device

Sending signals (dialing)

Pressing the "dial" button on the device sends a dial signal to both the device and the connected standby units.

Receiving signals

All interconnected units can receive dial signals from any unit, indicated through speakers and high-brightness indicator lights.

Voice alarm

Common phrases like "station ahead, please prepare to disembark," "moving, pedestrians not allowed," "emergency stop, please be careful," "system starting, please be cautious," etc., can be customized according to user requirements. The voice alarms are clear and loud with human pronunciation.

Simplex intercom function

Holding down the "talk" button and speaking into the microphone allows all interconnected units to clearly hear the intercom content.

Emergency stop function

Mainly used for safety lockout in underground coal mine small winch systems and as part of comprehensive protection for conveyor belts.

Components of Signal Device

Energy-limiting devices: At the heart of an intrinsically safe barrier system are energy-limiting devices. These devices are designed to restrict electrical energy transmitted to a hazardous area, ensuring that under normal or fault conditions, the energy levels cannot ignite flammable materials.

Isolators: Isolators play a crucial role in intrinsically safe barrier systems. They electrically separate the safe area circuitry from circuits in hazardous areas. This separation ensures that high voltages or faults in the system do not reach the explosive environment.

Grounding systems: Proper grounding is essential in any intrinsically safe barrier system. It serves to ensure that electrical and static discharges are safely directed away from explosive atmospheres.

Application of Signal Device

Intrinsically safe sound and light signal device integrates multiple functions such as signaling, communication, sound-light alarms, and safety lockout. It is primarily used for safety lockout, signal communication, and voice alarms in underground coal mine small winches and monkey car systems. This signaling device can operate independently as a system or be used in conjunction with our company's belt protection control host for startup warning, signal communication, and emergency stop lockout for the entire belt system.

Packing and Shipping of Signal Device

Packing	Box
Shipping	Shipped by road, sea, rail

FAQ

Q: What is the most important benefit of using intrinsically safe lighting?

A: One of the primary benefits of intrinsically safe lighting is its ability to prevent ignitions in explosive atmospheres.

Q: What are the requirements for intrinsically safe equipment?

A: Six classes define temperature levels. In general, equipment meeting the T4 designation is considered intrinsically safe because temperatures will not exceed 135°C (275°F) (equipment dissipating less than 1.3 W generally stays below this temperature).

Q: What is the voltage limit for intrinsically safe devices?

A: Avoiding ignition entails minimizing both the available power and the maximum temperatures. Defining the maximum level of available power is complex, but in general terms can be considered as meaning voltage less than 29V and under 300 mA.

Q: How to tell if a device is intrinsically safe?

A: The Ex-mark on a product always includes the type of protection offered. The “i” in Ex i indicates that a product is intrinsically safe. Typically, the mark also includes another letter indicating the severity of the hazardous area it is suitable for.

Q: Is intrinsically safe better than explosion proof?

A: An Intrinsically Safe designed and certified product provides the convenience of safety and servicing while in operation in hazardous environments that an Explosion Proof designed product cannot provide.

Q: What type of wire should be used for intrinsically safe devices?

A: The cables are often protected by tough sheathing materials such as polyurethane to prevent any mechanical damage which could compromise electrical safety. Examples of intrinsically safe cables include the French Standard NF M87-202 instrumentation cables.

As one of the most professional signal device manufacturers in China, we're featured by providing high quality products for mining communication system and mining automation equipment. Welcome to buy customized signal device from our factory.