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Help CenterHigh Quality KTH18 Explosion-proof BEN Automatic Mine Telephone for Sale
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High quality KTH18 Explosion-proof BEN Automatic Mine Telephone for sale
Product Introduction
1)This phone shell is made of Aluminium alloy , beautiful outlook, high mechanical strength
2)The domestic new key number plate.
3)Circuit inside the telephone uses the international general integrated circuit, has the advantage of dialing accurate, clear communication, work stability etc
4)Send signals with dual tone frequency and have pulse dialing function (ex-factory general switch in double audio situation)
5)with shockproof, moisture proof, small volume, light weight, strong, durable, easy maintenance, etc.
Technology Parameters
1) Condition of usage
Environment temperature: -10~40°C
Relative temperature :<=95%(+25°C)
Atmospheric pressure:(86~106)kpa
Related device: HDK coupler
2)Intrinsically safe parameters
Item |
KTH33 |
Max input voltage(V) |
DC60 |
Max input current(mA) |
30 |
Max voltage of bell(V) |
AC56V |
Max current of bell(mA) |
10 |
3)index electric and audio
|
Length of mining artificial line
|
0KM |
5KM |
10KM |
Send loudness rating(SLR) |
≥ 2 |
≤ 15 |
≤ 18 |
Receive loudness rating (RLR) |
≥ -8 |
≤ 2 |
≤ 2 |
Side Tone Masking Rating (STMR) |
≥ 3 |
≥ 8 |
≥ 5 |
Sound grade: ≥ 80dB
Impulse break-make ratio:1.6±0.2:1
Impulse rate:10±1 times/second
Frequency of double audio
|
High audio frequency Data& sign
Low audio frequency |
1209 |
1336 |
1477 |
697 |
1 |
2 |
3 |
770 |
4 |
5 |
6 |
852 |
7 |
8 |
9 |
941 |
* |
0 |
* |
Frequency error<=1.5%
Low frequency group of level :-9dBm±3dB
High frequency group of level :-7dBm±3dB
In the frequency combination, high frequency electrical level should be low frequency electrical level higher about 2±1dB
The real details photo
Good Cooperation
Transaction history
Quality Certificate
Transport and Shipping
welcome to visit our company webiste, Any question,pls contact EVA Shao,
company website: https://img13.fr-trading.com/
Skype : hw.april
QQ: 2283541257
Mobile:+8613518655765
Tel : 0086-537-2580308
Fax : 0086-537-2585538
Send Inquiry to This Supplier
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