Explosion-proof mine telephone set TASH1-1

Explosion-proof mine telephone sets TASH1-1, TASH1-1A Explosion-proof mine telephone sets TASH1-1, TASH1-1A with a dialer are designed to provide stable telephone communications in mine networks. Scope of application: underground workings of coal mines, including those hazardous due to gas and/or dust, as well as hazardous due to sudden outbursts of rock, coal and gas. They are used in mine telephone communication complexes DISK-SHATS, URI, SHTSI4, BIT78, SAT, CORAL. Telephone sets TASH1-1, TASH1-1A are manufactured with a degree of dust and moisture protection - IP65, according to GOST 24754-81, they are designed for operation in hazardous areas and are marked PO Ex ia I Ma. Telephone sets TASH1-1, TASH1-1A are a complete analogue of mine telephone sets TASH1319, but have a number of additional functions and advantages. Functions of the TASH1-1, TASH1-1A devices: telephone communication dialing a number in pulse and tone modes memory for 12 numbers operational and emergency communication with the dispatcher (buttons “D” and “A”) calling 10 numbers by pressing 2 buttons availability of buttons hang up and repeat the last dialed number; automatic disconnection of the line and return to the “call waiting” state when the handset is off-hook after a specified period of time; receiving incoming calls when the handset is off-hook; optionally - the ability to connect an external sensor with a relay contact, when triggered, the device automatically calls in advance to a number recorded in memory, will transmit a pre-recorded voice message, the ability to connect an external device for duplicating an incoming call, the ability to program the device from the keyboard, restricting access to the programming mode via a PIN code. Technical characteristics of devices TASH1-1, TASH1-1A Ring signal volume at a distance of 1 m, dB no less than 95 Degree of protection from dust and moisture IP65 Class of intelligibility of voice messages in communication paths according to GOST 16600 no less than III Level and type of explosion protection PO Ex ia I Ma Maximum length of the communication line when using a cable with a core diameter of more than 0.64 mm, km 15 Climatic modification according to GOST 15150-69 UHL5 Local effect attenuation rate, dB not less than 8 Operating temperature range, deg. C - 30 … +60 Transmission volume indicator, dB 4...10 Relative humidity at 35 degrees C, % 100 Reception volume indicator, dB 0...minus 6 Air dust content, mg/m3, no more than 2500 Vibration loads with acceleration 49 m/s2 in the frequency range, Hz 10...70 Average time to restore working condition in electrical repair shops, hour no more than 2 Shock loads with acceleration 147 m/s2 with a total number of impacts 10000 Mean time between failures, hour no less than 10000 Dimensional dimensions, mm 305х200х90 Average service life, years not less than 6 Weight, kg 2