Safety & health monitoring room sensors (12 pages)
Summary of Contents for S&S Northern HGD-100
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Installation, Operation & Maintenance Manual HGD-100 HGD-100 Hydrogen (H ) Detector Installation, Operation & Maintenance Please read this manual carefully and retain for future use. For specific requirements that may deviate from the information in this guide – contact your supplier....
Product Description Overview The HGD-100 Hydrogen Gas Detector will monitor hydrogen gas buildup in storage rooms and facilities that house batteries. The detector provides terminal block connections for single-phase 90-250V AC, 24VAC or 18-60VDC power. Detected Hydrogen levels are displayed in % Vol and traffic light indication - Green (Normal) Yellow (Warning Pre-alarm) Red (Alarm).
Installation, Operation & Maintenance Manual HGD-100 Installation Typical Application & Location Installation must be carried out by a licenced, insured contractor! Ensure that detectors are not exposed to liquid or dust contamination! Detectors and cables must be protected against mechanical damage! Avoid conditions of any other environmental factors outside of the specification that could potentially impede the accuracy and operation of the detector such as condensation;...
Installation, Operation & Maintenance Manual HGD-100 Mounting & Cabling If mounting direct to wall - ensure the wall surface is flat to prevent base distortion! Ensure the rear base is installed in the correct orientation as shown! Where cable glands/conduits are used for wire entry, use 20mm (3/4 inch) max separated by at least 20mm!
Installation, Operation & Maintenance Manual HGD-100 Circuit Board Overview Damage to PCBs when creating cable entry points may void any warranty! Any damage attempting to remove the circuit board may void any warranty! A disconnector is required and accessible for the supply and an adequate overcurrent device is fitted!
Installation, Operation & Maintenance Manual HGD-100 Power Input Power can be provided using either 24 VAC, 18-60 VDC, or 90~250V AC Terminals are pluggable types for easier connections. Analogue Outputs The 0(2)-10V & 0(4)-20mA output is linearly scaled according to the status of gas concentrations detected.
Installation, Operation & Maintenance Manual HGD-100 This output can be used to regulate the external fan speed and can be connected directly to fan speed controllers, select 0(2)-10v or 0(4)-20mA from the S1 dip switch. S1 Switch Settings S1-1 ON...
Installation, Operation & Maintenance Manual HGD-100 External Strobe The Strobe connection provides 12V DC (504mA max) output power to an external strobe and will activate when the Hydrogen level reaches 2% Vol. Fire Alarm The fire alarm connection provides a 1A normally open dry contact output to an external fire alarm, the output will be activated at the warning alarm level of 2% Vol.
Installation, Operation & Maintenance Manual HGD-100 Setting Screen There is a settings and menu switch on the main board. Switch the MENU or SETTINGS switch to prompt the on-screen menu. Navigate the menu using the SEL buttons on the main board, press the OK button to save desired settings and switch off to return to the normal operating mode.
Installation, Operation & Maintenance Manual HGD-100 Menu Out 2 Pre Alarm delay(s) Alarm delay(s) FACTORY RESET Out 1 - Analogue output 0(2)-10 or 0(4)-20mA Selection between 0v / 0mA and 2v / 4mA Out 2 - Analogue output 0(2)-10 or 0(4)-20mA Selection between 0v / 0mA and 2v / 4mA Pre-Alarm Delay(s) –...
Installation, Operation & Maintenance Manual HGD-100 Bump Test (Gas Response Check) What is a Bump Test? Gas response checks are often referred to as a ‘bump test’. Bump tests are important to make sure a device can detect a release of gas as early as possible. The aim of the bump test is to make sure a detector is working at its optimum by briefly exposing the unit to a known concentration of the target gas that usually exceeds the highest alarm point.
Installation, Operation & Maintenance Manual HGD-100 Exposure to chemicals, smoke, or any other materials other than the gases intended to be monitored can seriously damage the gas sensing elements! Always allow a minimum of 5 minutes before testing the same unit! Ensure you have a suitable bump testing kit, contact your S&S Northern representative for details.
Installation, Operation & Maintenance Manual HGD-100 Specification General Model: HGD100 Target Gases: Hydrogen – H Size: (H x W x D) 5.95 x 4.37 x 1.97” (151 x 111 x 50mm) Housing Material: ABS PA765. Flame Retardant UL 94V-1 Mounting:...
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Installation, Operation & Maintenance Manual HGD-100 S&S Northern Limited www.snsnorthern.com S&S Northern Head Office Tel: +44 (0) 1257 470983 info@snsnorthern.com S&S Southeast Division Tel: +44 (0) 1702 291725 south@snsnorthern.com S&S Northern is the owner of this document and reserves all rights of modification without prior notice.
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