KTH106-1Z type mine intrinsically safe automatic telephone 
 First, the use of mine KTH106-1Z-type automatic telephone intrinsically safe standard in accordance with Q/HX001-2007 production. Pulse audio is compatible with the dual telephones, and associated mining equipment HDK telephone couplers, and output signals meet the requirements of the dispatch or switch can be composed of Coal Mine Safety Communication System network. Can be widely used in explosive gas environments. The explosion marked as "Exib Ⅰ". 
 Second, model the meaning of K: Mine T: Communication Equipment H: Telephone Z: automatic 106: Atmospheric pressure 
 Third, the main features of 1, the phone casing is aluminum, good looks, high mechanical strength. 2, using the new key number plate. 3, telephone with international standard integrated circuit within the circuit, has made accurate number, the call clear, stable and so on. 4, with two-tone and pulse Fat No Fat No function (switch factory common dual audio). 5, the whole shock, moisture, small size, light weight, strong, durable, easy to maintain. 
 Fourth, the main technical parameters 1, the use of ambient temperature conditions: -10 ℃ - +40 ℃; relative humidity: ≤ 95% (+25 ℃ pm) atmospheric pressure: (86-106) kpa associated equipment: HDK coupler 2, the Security parameters in Table 1: Project Parameters The maximum input voltage DC60V Maximum input current 30mA maximum ringing ringing voltage AC56V maximum current 10mA 3, electro-acoustic indicators in Table 2: Table 2 mine simulation length 0km 5km 10km send loudness rating ( SLR) ≥ 2 ≤ 15 ≤ 18 receiving loudness rating (RLR) ≥ -8 ≤ 2 ≤ 2 lateral masking assessment of the value of sound pressure (STMR) ≥ 3 ≥ 8 ≥ 5 ringing level: ≥ 80dB. Intermittent pulse ratio: 1.6 ± 0.2:1 pulse rate: 10 ± 1 times / second two-disc audio frequency of No. 3 Table 3 Table 4 Dimensions mm: 112 × 290 × 122 5, Weight: 2.5kg 6, Communication distance: ≤ 10km, cable model specifications for the MHYV1 * 2 * 7/0.37. 
 Fifth, use 1, a telephone line connected to the input HDK-type coupling the output of the whole (couplers should be located in safe areas) and the coupler input termination consistent with the input signal or switch to dispatch. 2, when the dispatcher or switch signal format for the pulse signal, the phone open, the switch "on the pulse" position. 3, pick up, then hear the dial tone to dial-up, when the called party is busy, you can hang up first, and then re-hook to dial. 
 VI Caution 1, to avoid telephone strong vibration, shock and water washout. 2, the telephone in the overhaul, may not change the circuit element specifications and models, or they will undermine the explosion-proof performance. 3, the phone only allows use with HDK-coupler, the role of prohibition and other associated equipment. 4, the telephone line connected with the user should meet the following requirements: subscriber line loop resistance ≤ 1kΩ line to line leakage resistance ≤ 20kΩ distributed capacitance ≤ 0.1μF/km distributed inductance ≤ 1mH/km