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ST-700

Gas alarm

 

   
   

Features

 1        Gas alarm meets UL 1484 standard.

 

 2        Built-in the high tech gas sensor, it has the high sensitivity, the high stability, and the high gas selectivity’s characteristic, may precise detect the gas concentration.

 

 3        With the advanced high tech microprocessor and the wisdom control, processing the precise computation of the gas concentration and have much intelligent control.

 

 4        Provide the test / silence button, besides internal self- diagnosis, under the stand-by status, may lightly press the test / silence button to test the alarm. This button also provides the specialist to test the system link when continuously presses the button for 8 seconds.

 

 5        Provide the power switch button, it automatically turn on when inserts the power source, when continuously press the button for 1 second, it will turn off, and has the key tone. This button provides the specialist to use; usually this product should setting for the turn on condition.

 

 6        Built-in the high efficiency wide-range Switching Power Supply, suitable to the universal voltage. 

 

   

Selection guide

   
Specifications

Model no.

ST-700

Model name

Gas alarm

Target gas

GAS (LNG & LPG)

Detect mode

Semiconductor type or hot-wire

Threshold

Meets UL 1484 standard

Power LED

Blue

Alarm LED

Red blinking per half-second

Fault LED

Yellow blinking per 8 seconds

Warning sounds

High/low tone, repeat, 85dB/1M

Trouble sound

Beep per 24 seconds

External warning

Sounds & Power LED: Twice every half-second, stops half-second, repeat continuous.

Working temperature

0~ 50

Working humidity

95%RH max.

Power supply

AC100~240V, 50~60Hz; or DC12V, 500mA external (Refer to the Selection guide)

Power consumption

Stand-by: around 1W Warning: 1~6W (According to the link)

Dimensions

H120mm×W70mm×D35mm (with base)

Weight

130g (AC, without plug) ; 110g (DC)

Signal link, Valve control & other optional functions: Refer to the Selection guide

Remark: LNG (Liquefied Natural Gas), LPG (Liquefied Petroleum Gas)

Concerning the gas alarm’s threshold, UL 1484 (Residential Gas Detectors) standard: The gas concentration has not reached the 1/100 LEL must not warning; the gas concentration between 1/100~1/4 LEL must warning. The unit setting at 1/10 LEL, meets UL 1484 standard.
 
 
   
 

The matches valves

Solenoid valve (Model: V15 or V20)

  During normal status, the valve is no power consumption, energy saving and high safety.

  The pipeline bursts, boils the overflow, blows out ... and so on cause which the gas leaks, gas alarm output the 12V pulse signal to the valve to interrupt gas.

  The pull rod has the dustproof and waterproof cover. Meet IP-54.

  Could use the manual control to opens or closes the valve.

  Suits to the pipe size: 1/2" or 3/4" (V15 for 1/2”, V20 for 3/4”)

  Working pressure: 500mBAR

  Must conjunction the gas alarm or related equipment that provide the signal.

  Corresponding alarm series: ST-700AE, ST-710AE, and ST-720AE…(Refer to the Selection guide)

 

Mechanical valve (Model: MV-20N)

  During normal status, the valve is no power consumption. Suit for any working pressure.

  When the gas concentration achieved the threshold, the alarm provides DC12V to the mechanical valve, automatically turns off the gas, guarantees the security.

  With manual shut-off and reset button.

  Directly installs on the ball valve. Unnecessary to cut off the gas pipeline, installs conveniently.

  The substitution product of the solenoid valve, must conjunction the gas alarm or related equipment that provide the signal.

  Corresponding alarm series: ST-700AM, ST-710AM, and ST-720AM…

 

 

For single station useIf the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

 

 
   
   
 
         
 
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