The BEP Marine 600-GDL Gas Detector uses microprocessor control to maintain accurate sensor sensitivity. It is capable of controlling two sensors that detect both LPG and petrol, and provides both visual and audible alarms. A built-in test switch allows users to verify sensor operation, while indicator lights assist with fault detection.The 600-GDL model includes all the features of the 600-GD, with the added functionality of switching a valve on and off. It also incorporates a pulse and hold feature, enabling the solenoid valve to open using full power and then reducing power to maintain the valve in the open position. This helps minimize power consumption and reduces heat generation while the valve remains active.FeaturesSelf testing capabilityMicroprocessor controlDual sensor capabilityProvision for an external alarmProvision for automatic bilge blower switchingAutomatic shut-off solenoid control with Pulse and Hold circuit technology for low power draw(600-GDL only)Manual override Important: Disables gas detector (600-GDL only)SpecificationsVoltage: 600-GDL 10-15V DCCurrent: Total 350mA MaxAlarm: 20% LEL (Lower Explosive Limit)Current at outputs: 800mA Max (per output)Note: If you are using a solenoid valve other than BEPs VR2. The solenoid current draw must be checked to make sure it is 800mA or less at 12.5 volts.Fault DetectionThe nominal alarm point of the 600 series is 20% of the LEL (Lower Explosive Limit) of LPG/CNG in Air. In the event of a gas leak and the alarm activating, close the manual valve on your gas bottles and open hatches to ventilate the area. All fans and blowers used to ventilate must be ignition protected types.In the event of a sensor being contaminated, damaged, cable shorting or a faulty connection, the amber light will come on for the particular sensor. If the sensor fault persists then the sensor could be damaged and will need to be replaced. In detecting LPG the sensor can also detect hydrocarbons in other products such as cleaners and strong adhesives, this can cause nuisance alarms.Cautions When Using Gas SensorsExposure to silicone vapors can irreversibly inhibit sensor sensitivity.Highly corrosive environments can cause irreversible damage to the sensor.Water, freezing, and high-density gas exposure can adversely affect sensor performance.The sensor can detect hydrocarbons in other products, causing nuisance alarms.Important NotesIf the sensor gets wet, it becomes inoperable and must be replaced.For units with S/N before J48494, an 82k resistor must be fitted between terminals G and R on the back of the meter case.DimensionsTechnical FilesInstallation And Operating Instructions BL-SL-L Instructions 600 LPG Control Instructions .input-wrapper a { text-decoration: none; / Removes underline / background-color: transparent; / Ensures no background color / } .input-wrapper a:hover { text-decoration: underline; / Adds underline on hover / background-color: transparent !important; / Removes grey highlight / }