Rugged Industrial Telephones

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%,50Hz 2.4 operating current, 50mA,≤0.2A. 2.5 frequency response, 300 3400 Hz 2.6 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 .