Riken Keiki SD-3 Series Operating Manual Download

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4. Installation

4-3 Providing maintenance space

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CAUTION

The product requires periodic maintenance.
Do not install in the following or similar locations where maintenance is dangerous or not possible:

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Locations such as within systems that must be stopped for maintenance

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Locations where part of the system must be detached to allow maintenance

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Locations where the product cannot be removed due to the presence of pipes or racks

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Locations where maintenance work is hazardous—for example, close to high-voltage cables

Summary of Contents for SD-3 Series

Page 1: ...PT2E 3011 Gas Detector with Signal Converter SD 3 Series Operating Manual 2 7 6 Azusawa Itabashi ku Tokyo 174 8744 Japan Website https www rikenkeiki co jp ...

Page 2: ...allation information 39 4 1 2 Restrictions regarding installation 40 4 2 System design precautions 44 4 2 1 Using a stable power supply 44 4 2 2 Lightning strike protective measures 44 4 3 Providing maintenance space 45 4 4 Main unit installation 47 4 4 1 Vertical pole mounting 47 4 4 2 Wall mounting 48 4 4 3 Attaching protective cover 49 4 4 4 Attaching sunshade cover 51 4 5 Remote sensor head GD...

Page 3: ...sposal 90 6 1 Procedures for storage or when not in use for extended periods 90 6 2 Procedures for relocation or reuse 92 6 3 Product disposal 92 7 Troubleshooting 93 7 1 Product abnormalities 93 7 2 Reading abnormalities 94 8 Product Specifications 96 8 1 Detection target gases for individual detection principles 96 8 1 1 Non dispersive infrared absorption type Infrared type 96 8 1 2 New ceramic ...

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Page 9: ...e zones and conditions The product is approved for use in areas where gases classified in explosive gas groups IIA IIB or IIC may be present This refers to use limited to hazardous zones categorized as Zone 1 or Zone 2 within the product operating temperature range ...

Page 10: ...ituations in which improper handling may result in fatal or serious injury or significant property damage WARNING This indicates situations in which improper handling may result in serious injury or significant property damage CAUTION This indicates situations in which improper handling may result in minor injury or minor property damage Additionally usage recommendations are indicated as follows ...

Page 11: ...mage the product Do not use unstable power supplies Doing so may result in malfunctions Do not disconnect the protective grounding wire or terminal Before operating the product check the protective functions for defects Do not operate the product if you suspect any problems with the protective grounding or other protective functions Connect to a protective ground before connecting to external cont...

Page 12: ...rned back on immediately The product is not a control device Never use the product output to control other devices Do not disassemble or alter the product Product performance cannot be guaranteed if the product is disassembled or modified Do not alter settings unnecessarily unless you are fully aware of the consequences Doing so may result in improper alarm function Avoid performing any operations...

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Page 18: ...ies Applicable standards IEC 60079 0 2017 IEC 60079 1 2014 IEC 60079 11 2011 EN IEC 60079 0 2018 EN 60079 1 2014 EN 60079 11 2012 Operating manual no PT2 287 2 7 6 Azusawa Itabashi ku Tokyo 174 8744 Japan Phone 81 3 3966 1113 Fax 81 3 3558 9110 Email intdept rikenkeiki co jp Website https www rikenkeiki co jp ...

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Page 22: ...sure the grounding is Class D equivalent grounding resistance less than 100 Ω Use crimped terminals to connect the grounding wire to the grounding terminal inside the unit Use a cable with a cross section area of at least 4 mm2 to connect to the external grounding terminal Use approved cable glands when installing If the product is installed in a location where the ambient temperature exceeds 65 C...

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Page 29: ...iate part thickness Screw holes on rear and underside of container GD 3 There are four screw holes on the rear of the container and four screw holes on the underside Screw size M5 Pitch 0 8 Screw depth 5 Maximum allowable length of male screw Lmax 4 2 mm x x is the intermediate part thickness Container rear Container underside Screw holes on rear of container four locations Screw holes on rear of ...

Page 30: ... 3 1 Main unit and accessories Open the box and packaging and inspect the main unit and accessories If anything is missing contact Riken Keiki 3 1 1 Main unit SD 3 Diffusion type Model without EC barrier Model with EC barrier Suction type Model without EC barrier Model with EC barrier ...

Page 31: ...3 Product Configuration 3 1 Main unit and accessories 31 105 3 1 2 Main unit SD 3SC 3 1 3 Remote sensor head GD 3 Diffusion type Model without EC barrier Model with EC barrier ...

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Page 39: ...have two M25 1 5 connectors for use when wiring in the field Connectors must always be blanked off with blanking plugs when not in use The GD 3 has two M25 1 5 connectors for connecting the SD 3SC The connector not in use must be blanked off with a blanking plug at all times Do not mount a sensor that uses a different detection principle from the model type Use ferrules on the ends of stranded cab...

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Page 43: ...result in momentary opening in the event of an external force or other physical impact If a b contact is used as an alarm contact implement measures to account for such momentary operations for example by adding a delay operation of approximately one second to the signal on the b contact receiving side ...

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Page 46: ...here maintenance is dangerous or not possible Locations such as within systems that must be stopped for maintenance Locations where part of the system must be detached to allow maintenance Locations where the product cannot be removed due to the presence of pipes or racks Locations where maintenance work is hazardous for example close to high voltage cables ...

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Page 54: ...e sensor on the remote sensor head GD 3 to enable calibration The tube should protrude from the top of the duct mounting kit 3 Insert the duct mounting kit into the opening in the duct Secure in place with six M6 bolts 0NOTE When mounting the remote sensor head GD 3 inside a duct make sure the sensor is not in contact with the duct inner wall Duct mounting kit Duct 300 or more ...

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Page 57: ...ensor head GD 3 Up to two external cable connectors can be used at the same time excluding the remote sensor head GD 3 connector cable Use the approved cable glands for the connection Blank off unused connectors with blanking plugs Do not use more than one adapter per connector Do not use an adapter together with a blanking plug ...

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Page 63: ...ise to attach and secure with the single M4 hex socket set screw Use a hex key wrench 2 across flats to tighten the M4 hex socket set screw Take care not to trap the cable when attaching the cover Rotate the cover clockwise until it moves no further to securely fasten in place Hex key wrench ...

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Page 73: ...e mounting method for the remote sensor head GD 3 is identical CAUTION Depending on the sensor some fluctuation of the reading may occur if foreign objects are introduced while replacing the sensor 4 9 Alarm relay setting option The product can be operated as a standalone unit by setting an alarm relay By default the alarm relay is set to a de energized state WARNING If using a supply voltage of 3...

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Page 80: ...and after sensor replacement Allow the product to warm up for the specified time Expected warmup completion times for the semiconductor type SGF and hot wire semiconductor type SHF sensors are indicated after initialization Alarm activation and output signals will be unstable during warmup Notify the relevant department beforehand to avoid conditions that may lead to errors Perform calibration onc...

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Page 82: ...g the control key Use the control key to touch the four keys MENU ESC key SET key key and key on the front of the product This operating manual refers to the action of touching the individual keys using the control key as pressing Control key CAUTION Do not press the control key forcibly against the glass ...

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Page 84: ...ed Set or display individual items 3 Once the operation is complete hold down the MENU ESC key for approximately three seconds The product switches to detection mode WARNING Once the operation is complete be sure to hold down the MENU ESC key to return to detection mode The product will not detect gases while in adjustment setting state If left in user mode the product will take 10 hours to return...

Page 85: ...ns clean air Performing zero calibration in the presence of miscellaneous gases will prevent correct calibration and create safety hazards in the event of an actual gas leak CAUTION Perform zero calibration after supplying the zero calibration gas and waiting for the reading to stabilize 1 Press the or key in user mode to select 1 1 then press the SET key 2 Introduce the zero calibration gas then ...

Page 86: ...ctuates significantly around zero FAIL is displayed before the display returns to 1 1 If this occurs zero calibration was not performed 1 1 corresponds to span adjustment for the oxygen deficiency alarm specifications Introduce clean air to adjust to 20 9 vol For information on span adjustment refer to 7 4 3 Performing span adjustment in the Technical manual ...

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Page 88: ... is on or off This is not normally used by the user Sensitivity correction ON OFF display Displays whether sensitivity correction is on or off This is not normally used by the user Press the key to return to the first alarm setpoint display 4 Press the MENU ESC key Returns to the 1 2 0 display NOTE The alarm setpoints alarm delay time and zero suppression value can be set in environmental settings...

Page 89: ...am central system Before shutting down product operation make sure the INHIBIT setting is enabled alarm processes are stopped in the upstream central system Also check the operation of any devices connected to the external output or external contact output terminal of the product to confirm shutting down the power will not cause problems If using contacts optional the contacts may activate when th...

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Page 92: ...n relocation locations For information on installation procedures refer to 4 Installation CAUTION Calibration must always be performed before resuming use of the product that has been relocated or previously stopped and stored Contact Riken Keiki for information on readjustment procedures including calibration 6 3 Product disposal Dispose of the product as industrial waste incombustible in accorda...

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Page 97: ...oint to 25 LEL or higher Due to infrared absorption characteristics readings may differ even for the same target gas concentration if the base gas composition differs significantly between calibration and measurement for example if an air base is used for calibration and a CO2 base is used for measurement Perform maintenance if a warning appears while the life assessment or self diagnostic functio...

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Page 104: ...s with use under normal conditions in compliance with precautions indicated in the operating instructions or on labels affixed to the main unit For information on the length of the warranty for each sensor model refer to 10 3 Detection target gases for individual detection principles Aprecondition of the warranty for sensors requires sensors to be serviced once or more a year from the purchase dat...

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