Hydrogen Gas Detector, Mark4 - Dual Relay
Arrgh!! Hydrogen Gas Detector
099140 HGD-DR Mark4 AC Dual Relay, 85- 265 VAC 50/60HZ
099141 HGD-DR Mark4 DC Dual Relay, 17-60 VDC
099142 HGD-DR Mark4 VDC, Dual Relay, 12 VDC only
For lead-acid battery charging rooms and other areas where hydrogen is present protects life, property and profits.
Lead-acid batteries on charge emit hydrogen gas after reaching the 80% recharge point.
Automatic Operation, Continuous Monitoring, High Sensitivity & Stability, Solid State Reliability, Safe, 12 Volt dc Operating Voltage, Easy Installation, Low Cost, Two Year Warranty.
The sensor consists of a semiconductor whose electrical conductivity increases when hydrogen is adsorbed on its surface. Conductivity, proportional to the gas concentration, is continuously measured by an electronic circuit.
|Typical hydrogen emissions for motive-power batteries are:|
|Concentrations of 4.1% to 75% mixed with air can be explosive. Sparks or hot surfaces can ignite them. An Arrgh!! hydrogen gas detector in your battery room will provide a warning and facilitate dissipation of hydrogen concentrations before they reach the lower explosive limit (LEL) of 4.1%.|
|»||Steel junction box for hard-wiring to wall or ceiling.|
||Remote box (modular jack with duplicate LEDs, test button, and buzzer if needed) for placement at eye-level or in another room.|
|»||Telephone-type modular cable for connecting the remote box to the detector.|
|Dimensions:||Height 7 " (17.8 cm.)|
|Width 4-3/4 " (12.0 cm.)|
|Depth 2-1/2 " ( 5.5 cm.)|
|Mounting:||Four 3/16 " (4.5 mm.) screws|
|Power Requirements:||120 volts ac 50/60 hertz standard.|
|220 volts ac, or 12 to 48 volts dc upon request.|
|Relay(s):||Form A, Normally-Open standard.|
|Form B, Normally-Closed upon request.|
|Form C, Available at additional cost.|
|Operating Temperature:||14 to 104 degrees F ( -10 to 40 degrees C)|