industrial telephone for fiammable and combustible

1)shell made of si-aluminium alloy 2)adopt stainless steel keypad 3)imported PC material 4)defend grade is up to IP67

±1.Range

   Can be used in nuclear power plant, petroleum, chemical plant, storage and transport industry etc flammable and combustible area.Then user can be communicate in a dangerous area.

2.Feature

  2.1Shell of the explosion-proof telephone made of si-aluminium alloy with high temperature, electrostatic plastic sprayed surface.Good impact resistance.

  2.2The telephone adopt stainless steel keypad, which contact resistance≤30ohm, life cycle≥2 million, push force 160~200 grams,defend grade is up to IP67,good hand feeling.

  2.3Handle adopts imported PC engineer material,thermostability of the PTFE wire. military noise cancelling microphone.  Clear conversation in 115dB environment.

  2.4Hook adopts magnetic induction switch,life cycle≥500 thousand. Increased safety terminal compartment,to ensure that product′s explosion-proof and electronic properties.

  2.5Using integral design faith, integrate basic conversation ciruit, noise removal circuit.power amplifying ciruit and power cicuitand protection circuit etc. These electronic components of the product adopt famous imported brand and selected by high and low temperature aging test.

  2.6Six channels in a telephone or more are available which according to customer′s requirement. This telephone network is flexible, can be setted of its extension set arbitrarily, numbers can be changed random.All of telephones connect in a bus cables, so it can add or decrease anytime without restriction. Each telephone is the independent workstation, will break down not to interfere with the overall system work. The system has the automatic gain   control, they donot change for volume of the Sound,lengh of distance and the quantity of telephone in whole system..

  2.7It is very easy to be installed and be protected for there is a extra box for more cables.

3.Technical parameter

Ambient temperature	-30~+50°c
Defend grade	IP66
Relative humidity	≤95%
Atmospheric pressure	80~110KPa
Call effective distance	6Km
Anti-explosion grade	Exde[ib]ibllBT6,Exde[ib]ibllCT6,DIP A21 TA, T6
Output voltage	AC220V±15%, 50Hz
Wait,working current	50mA  ≤0.2A
Frequency response	250~7500Hz
Lines output audio signal level	+2dB
Loop cicuit impedance	1KΩ
Amplify output power	0~25W Continuously adjustable
Noise cancelling index	115dB enviroment
Installation	Wall-mounted

industrial telephone for fiammable and combustible