1 Application

1.1     The hazardous location of explosive gas mixture , Zone1, Zone 2

1.2     explosive gas mixture , 1A  2B  IIC*                                                                                                                                                                                                                                                                                                      

1.3     temperature group ,T1-T6

1.4     Ambient temperature,-30 ~ +50

1.5     degreeRelative humidity, ≤95%

1.6       Atmospheric pressure, 80~110Kpa

1.7       Defend grade, IP 67

2.Main features

2.1 Operation standard,GB3836.1-2000,GB3836.2-2000, GB3836.3-2000,GB3836.4-2000.2.2 Anti-explosion mark ,check details at our homepage 2.3 Operating voltage ,AC220V±15%,50Hz2.4 operating current  , 50mA,≤0.2A.  

2.5 frequency response , 300~3400 Hz2.6 output sound signal ,1.5V / 300Ω

2.7 loop circuit impedance ,1KΩ

2.8 distortion factor ,≤2%

2.9 Output power amplification ,0~35W (load impedance 16Ω)

3.0 Installed  ,wall-mounted

3 Specification

3.1 This type of explosion-proof telephone made of si-aluminium alloy die-casting, High temperature electrostatic pensu of its surface. Shell with dial-up keyboard, high-performance glue sealing handle, hang pressure by induction fork of non-contact switch, Increased-safety connecting terminal . To be sure guaranteed the quality of  explosion-proof and electrical properties.

3.2  Using the integrated design concept with basic conversations, Noise resection, power amplifier, power circuit and protecting circuits etc in a phone,. well-known oversea brand components. High temperature screening tests..

3.3  Seven channels in a telephone or more channels are available which according to customer's requirement.

Machines can be arbitrary extension, netting flexible Settings, random number . All the boards in a bus and cables, so it can decrease anytime without restriction . Each unit is independent of a fault, workstation won't affect the entire system. This systems can be automatic gain control , there is no influence for its audio samll or heavy and its quantity of the telephones in a system.

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