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| Mine-used Wire/Wireless Communication |
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Model KXT22 Mine-used Communication and Signaling Device is suitable for the environment with explosion danger of methane and coal dust in mine underground, also for industries of metallurgy, chemical, building, transportation, power and food. It can be used separately, also can be equipped with the electric control device for belt conveyor. Model KXT22 consists of main machine and auxiliary machine which are mine-used intrinsic safety type, and the main machine has functions of start pre-alarming input control, pre-alarming reply output and dotting signal output. |
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Explosionproof Type: Mine-used Intrinsic safety, with marks as "ExibI" |
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Working Mode: Continuously |
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Capacity of Single Set: 1 Main machine;  18 auxiliary machines (multiple machines in cascade connection) |
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Recharge Power Supply: DC 18 24 V (I.S. power supply is required when used in mine underground) |
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Communication Distance: 2000 m (single series)
Parameters of Communication Cable:
Ring resistance =13.6  /km, inductance 0.8 H/m(10 kHz), capacitance 280 pF/m |
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Call Signal
a. Amplifying Loudness:  95 dB/m (A-weighting);
b. Distortion: 10%; frequency response: 4503000 Hz; discontinuity: 3 dB;
c. Continuous Amplifying Time: 3 min |
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Dotting Signal
a. Frequency: 976 10 Hz
b. Loudness: 95 dB/m (A-weighting) |
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Pre-alarming, Reply and Dotting Signal Output of Main Machine
a. Start pre-alarming control signal input: Voltage 518 V
b. Start pre-alarming reply output:
When conducting resistance is 500 (=2 mA), corresponding start pre-alarming signal is "Yes"
When cut-off resistance is 100 k(=5 V), corresponding start pre-alarming signal is "No"
c. Dotting signal output:
When conducting resistance is 500 (=2 mA), corresponding dotting signal is "Yes"
When cut-off resistance is 100 k(=5 V), corresponding dotting signal is "No" |
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Recharging Current: 204 mA/set |
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Overall Dimensions: 267 16793 (mm) |
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Weight: 5 kg |
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