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Riken Keiki GD-3EC, Technical Manual

The Riken Keiki GD-3EC gas detector is a cutting-edge instrument designed to detect a wide range of gases accurately. For detailed instructions on how to operate and maintain this device, be sure to download the free Technical Manual from manualshive.com. Ensure optimal performance with the comprehensive manual.

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6. Alarm Activation 

6-3    Warning operation 

97 / 168 

6-3    Warning operation 

If the product ambient temperature exceeds the specified operating temperature range, the concentration readout 
and warning number [E-27] are displayed alternately. 
Gas can still be measured in this state, as this is not a product fault. The external output will also be output in the 
range 4 mA to 20 mA according to the target gas concentration. The fault lamp will not light up. 

Summary of Contents for GD-3EC

Page 1: ...PT2E 2871 Gas Detector with Signal Converter SD 3 Series Technical Manual 2 7 6 Azusawa Itabashi ku Tokyo 174 8744 Japan Website https www rikenkeiki co jp...

Page 2: ...llation information 40 4 1 2 Restrictions regarding installation 41 4 2 System design precautions 45 4 2 1 Using a stable power supply 45 4 2 2 Lightning strike protective measures 45 4 3 Providing ma...

Page 3: ...utomatic sensor recognition function 106 7 Maintenance 107 7 1 Maintenance intervals and items 107 7 2 Maintenance mode 109 7 2 1 Maintenance mode setting items 109 7 2 2 Switching to maintenance mode...

Page 4: ...with EC barrier 150 10 2 3 Electrical ratings SD 3SC GD 3 153 10 3 Detection target gases for individual detection principles 154 10 3 1 Non dispersive infrared absorption type Infrared type 154 10 3...

Page 5: ...ovements Any duplication or reproduction of this manual without permission is prohibited whether in whole or in part Riken Keiki accepts no liability for accidents or damage resulting from use of the...

Page 6: ...ng icons Non dispersive infrared absorption type infrared type New ceramic type Semiconductor type Hot wire semiconductor type Electrochemical type Operating procedures and specifications for which no...

Page 7: ...ic type Range setting GH Semiconductor type 0 Single range Standard GHS Semiconductor type selectable for CS2 only 1 Double range 4 16 selectable with NC only SP Hot wire semiconductor type 2 Double r...

Page 8: ...n SD 3RI Diffusion Non dispersive infrared absorption type infrared type SD 3NC New ceramic type SD 3GH Semiconductor type SD 3GHS Semiconductor type CS2 carbon disulfide only SD 3SP Hot wire semicond...

Page 9: ...ramic type SGF Semiconductor type SHF Hot wire semiconductor type ESF Electrochemical type 1 2 3 Product features Standard specifications The product is constructed with a stainless steel housing suit...

Page 10: ...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 a...

Page 11: ...tuations 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 si...

Page 12: ...age 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 fun...

Page 13: ...ned 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 th...

Page 14: ...s alarms and faults no digital signal No alarm relay digital communication RS 485 output The electrochemical sensor is made into an explosion proof construction by using an EC barrier Detection princi...

Page 15: ...r Electrochemical type GD 3EC GD 3ECS GD 3ECB WARNING The SD 3EC and GD 3EC models are subdivided by the type of explosion proof construction of the flame arrester fitted to the sensor and whether the...

Page 16: ...70 C SD 3DSP GD 3SP SD 3EC d II 2G Ex db IIC T4 Gb 50 C Ta 70 C SD 3DEC GD 3EC SD 3ECS d II 2G Ex db IIC T4 Gb 50 C Ta 70 C SD 3DECS GD 3ECS SD 3ECB d i II 2G Ex db ia IIC T4 Gb 40 C Ta 70 C SD 3DECB...

Page 17: ...3DECS GD 3ECS SD 3ECB d i II 2G Ex db ia IIC T4 Gb 40 C Ta 70 C SD 3DECB GD 3ECB SD 3SC 2 d II 2G Ex db IIC T6 T5 T4 Gb 40 C Ta 47 C 55 C 70 C SD 3SC 3 d II 2G Ex db IIC T5 T4 Gb 40 C Ta 44 C 70 C SD...

Page 18: ...1 A 250 V AC 2 A RS 485 output SD 3DECB GD 3ECB 1 W Max SD 3SC 24 V DC 18 V 30 V DC Max 5 W Max 0 22 mA HART 30 V DC 1 A 250 V AC 2 A RS 485 output Certificate numbers IECEx PRE 20 0064 X Presafe 20 A...

Page 19: ...ries Applicable standards IEC 60079 0 2017 IEC 60079 1 2014 IEC 60079 11 2011 EN 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 Japa...

Page 20: ...s Display Gas detector SD 3 Hazardous area Zone 1 Non hazardous area Installation diagram Signal cable POW COM Sig Sig POW COM Sig Sig RLY RLY Display Gas detector SD 3 Hazardous area Zone 1 Non hazar...

Page 21: ...hazardous area Installation diagram Signal cable POW COM Sig Sig POW COM Sig Sig Signal cable RS 485 Display Gas detector SD 3SC Hazardous area Zone 1 Non hazardous area Installation diagram Signal c...

Page 22: ...M Sig Sig POW COM Sig Sig Signal cable Signal cable POW COM RS 485 Y RS 485 Z POW COM RS 485 Y RS 485 Z Remote sensor head GD 3 RS 485 RS 485 Display Gas detector SD 3SC Hazardous area Zone 1 Non haza...

Page 23: ...sure the grounding is Class D equivalent grounding resistance less than 100 Use crimped terminals to connect the grounding wire to the grounding terminal inside the unit Use a cable with a cross secti...

Page 24: ...M25 1 5 M25 1 5 M25 1 5 indicates no connector is available Connectors 1 2 4 and 6 can be used as cable entry ports Use Connector 6 if the main unit SD 3SC is connected to the remote sensor head GD 3...

Page 25: ...nnectors on the main unit SD 3 SD 3SC Tighten M25 plugs and adapters to a torque of at least 30 Nm Secure a minimum thread engagement of five threads Lightning arrester details Part Manufacturer Eaton...

Page 26: ...gainst mechanical damage for example when pulling connector cables Conforms as assembly These devices are not equipped with grounding or external connectors to junction conductors The user is responsi...

Page 27: ...Sensor assembly EC barrier Approved cable gland M25 plug Adapter M25 1 2NPT Adapter M25 3 4NPT Adapter M25 M20 Can be connected Cannot be connected NOTE Connect only components that are compatible wi...

Page 28: ...2 Important Safety Information 2 4 Safety information 28 168 Connection examples GD 3RI GD 3ECB SD 3SC SD 3SC...

Page 29: ...mportant Safety Information 2 4 Safety information 29 168 Exploded view SD 3 GD 3 Container Cover Blanking plug Blanking plug Gas sensor Sensor guard Cover Blanking plug Gas sensor Sensor guard Contai...

Page 30: ...ate 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...

Page 31: ...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 barri...

Page 32: ...3 Product Configuration 3 1 Main unit and accessories 32 168 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...

Page 33: ...for tightening M4 hex socket set screws Operating manual 1 NOTE The quantity of control keys and hex key wrenches included will vary depending on the quantity of product units ordered 1 10 units 1 11...

Page 34: ...r Material Body PP Nipple Stainless steel Teflon Calibration adapter for ESF sensor 4283 9013 40 SD 3EC ECS ECB calibration adapter Material Body PP Nipple Stainless steel Teflon Protective cover 4283...

Page 35: ...umber 3 is engraved on the underside Material Resin Blanking plug 4283 9018 10 M25 1 5 blanking plug Material Equivalent to SUS316 Adapter 4283 4081 70 Adapter to convert M25 1 5 screw thread to 1 2NP...

Page 36: ...S316 HART modem connector 2905 2439 10 Connector used when connecting a HART modem Lightning arrester 3 wire connection TP48 3 N NDI 2032 0099 50 Device to limit momentary surge voltages caused by lig...

Page 37: ...ey is used to switch menus or adjust lower a value Press in detection mode to display the external output Power lamp POWER Power lamp Lights up in green when the power is on The lamp flashes in green...

Page 38: ...converter HART modem Control unit CPU Power supply unit 24 V DC External output 4 20 mA HART Display 7 segment LED Alarm contact output option 1 Gas alarm output ALARM1 2 Gas alarm output ALARM2 3 Fau...

Page 39: ...tput 4 20 mA HART Display 7 segment LED Alarm contact output option 1 Gas alarm output ALARM1 2 Gas alarm output ALARM2 3 Fault output FAULT Contact operation Normal measurement De energized Alarm sta...

Page 40: ...ave 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...

Page 41: ...de cover is recommended when using the product in locations subject to direct sunlight Do not install in locations where maintenance is dangerous or not possible The product requires periodic maintena...

Page 42: ...a HART communication or HART multidrop mode Operating mode Signal impedance range for power supply voltage Operation without HART communication Max 300 at 18 V DC Linear increase to max 600 at 23 V DC...

Page 43: ...ge absorbers DANGER Never use for controls on which human life depends or other mission critical controls e g shutoff valve controls WARNING Contacts may not function correctly if left inactive for ex...

Page 44: ...esult 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...

Page 45: ...ve measures In factories or plants where cabling is configured as follows damage may result in the event of lightning strikes due to the cables connected to the devices acting as a receiving antenna f...

Page 46: ...roviding maintenance space When mounting the product allow space to open and close the covers during maintenance Main unit SD 3 SD 3SC The diagram illustrates the SD 3 The maintenance space for the SD...

Page 47: ...ere 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 wh...

Page 48: ...gh the upper slots on the main unit 2 Secure the U bolt to the main unit with two washers two spring washers and two M10 nuts 3 Fit the second U bolt around the vertical pole and through the lower slo...

Page 49: ...N The product requires periodic maintenance Do not install in the following or similar locations where maintenance is dangerous or not possible Locations such as within systems that must be stopped fo...

Page 50: ...pper slots on the main unit Secure with two washers two spring washers and two M10 nuts 3 Fit the second U bolt around the vertical pole and through the lower slots on the main unit Secure with two wa...

Page 51: ...EMS bolts 2 Attach the protective cover aligning it with the two lugs at the top of the chassis 3 Secure the protective cover in place by tightening the knurled screws on either side of the cover The...

Page 52: ...hers and two M10 nuts 2 Fit the second U bolt around the vertical pole and through the lower slots on the main unit Secure with two washers two spring washers and two M10 nuts 3 Attach the sunshade co...

Page 53: ...e SEMS bolts 2 Attach the sunshade cover aligning it with the two lugs at the top of the chassis 3 Secure the sunshade cover in place by tightening the knurled screws on either side of the cover The d...

Page 54: ...rface and secure with two M6 double SEMS bolts 4 5 2 Duct mounting Attach the remote sensor head GD 3 to a duct Attach to a duct using the duct mounting kit The duct mounting kit has the following dim...

Page 55: ...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...

Page 56: ...the grounding is Class D equivalent grounding resistance not exceeding 100 Use cable lugs on the grounding wire to ensure safe grounding with the cable free of slack and twisting Do not ground to the...

Page 57: ...supply and signal cables max 2 0 mm2 shielded Lightning arrester TP 48 Optional HART modem connector Cannot be used in explosion proof areas Contact output max 2 0 mm2 shielded Optional Power supply a...

Page 58: ...nsor 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...

Page 59: ...ropping the cover while unscrewing and removing it 2 Unscrew the two M3 screws securing the display unit 3 Pull out the display unit and hang on the lug on the housing The display unit is connected to...

Page 60: ...ction 1 Power supply 2 Common power supply signal 3 Signal Using 4 core cable Terminal No Power signal cable connection 1 Power supply 2 Power supply 3 Signal 4 Signal Recommended insulation length 40...

Page 61: ...ke care not to trap the cable here 11 Rotate the cover clockwise 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...

Page 62: ...to unscrew the M4 hex socket set screw Be careful to avoid dropping the cover while unscrewing and removing it 2 Rotate the cover counterclockwise and remove 3 Attach a cable gland or conduit to the c...

Page 63: ...0 50 mm When connecting cables connect the cable shielding to the terminals at the top left or top right on the inside of the main unit Depending on the installation location noise interference may re...

Page 64: ...se 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 Rota...

Page 65: ...ile unscrewing and removing it 2 Unscrew the two M3 screws securing the display unit 3 Pull out the display unit and hang on the lug on the housing The display unit is connected to the terminal plate...

Page 66: ...the remote connection terminal plate For information on connecting cables to the terminal plate refer to 4 7 5 Connecting cables to the terminal plate Terminal No Power signal cable connection 1 Powe...

Page 67: ...secure with the two M3 screws Take care not to trap the cable here 11 Rotate the cover clockwise to attach and secure with the single M4 hex socket set screw Use a hex key wrench 2 across flats to ti...

Page 68: ...onnecting the power and signal cables 68 168 SD 3SC and GD 3 connection example SD 3 SD 3SC and RM 5003 terminal plate connection example 1 2 3 4 13 12 14 RM 5003 SD 3 SD 3SC SD 3SC Cable Cable glands...

Page 69: ...ator e g RM 5003 SD 3 Connect the shield to the grounding bolt on the chassis Indicator e g RM 5003 SD 3SC Connect the shield to the grounding bolt on the chassis Secure shielded cable with clamp GD 3...

Page 70: ...sult if the stripped wire conductor length is too short and the wire is clamped incorrectly Conduction faults or overheating may result if the stripped wire conductor length is too short and the wire...

Page 71: ...le If a cable is inserted into the screwdriver slot the conductor may not make contact resulting in conduction faults or overheating When using the operating lever provided as a standard accessory con...

Page 72: ...r hole in the terminal plate as shown in the figure to the right 2 With the flathead screwdriver still being inserted insert the cable into the wire insertion hole round hole until it contacts the end...

Page 73: ...hex socket set screw 3 Rotate and remove the sensor guard Remove using a hex key wrench 8 across flats or wrench 4 Pull out and remove the sensor if fitted 5 Match the main unit connector and sensor...

Page 74: ...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...

Page 75: ...screw the M4 hex socket set screw on the main unit cover then rotate the cover counterclockwise to remove Use a hex key wrench 2 across flats to unscrew the M4 hex socket set screw Be careful to avoid...

Page 76: ...C N O Normally open N C Normally closed Recommended insulation length 120 130 mm 6 Mount the terminal plates TN2 Relay1 TN3 Relay2 and TN4 Relay3 on the terminal plate board Adjust the cable position...

Page 77: ...ver fit the filter inside the splash guard and reattach the cover This step is required only when using a silicone removal filter or activated carbon filter 2 Mount the splash guard over the guard on...

Page 78: ...is engraved on the underside of each splash guard IRF sensor identification number 1 Combustible gas sensor identification number 2 ESF sensor identification number 3 The splash guards are compatible...

Page 79: ...pply voltage is within the rated range External contacts may operate while adjustment is under way Take precautions to prevent any external effects from the contacts operating How to read display exam...

Page 80: ...ng to detection mode after the power is turned on System checks alarm cutoff and other initialization occurs during this time The display automatically changes as follows after the power is turned on...

Page 81: ...nd 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 indicate...

Page 82: ...larm NOTE The LEDs on the product comprise a five digit seven segment display Setting details are displayed as item numbers When setting in user mode or maintenance mode select the item number corresp...

Page 83: ...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 usin...

Page 84: ...duct from operating correctly 5 5 1 User mode setting items Item No Setting item LED display Details 1 0 Version information Displays the program version and other information This is not normally use...

Page 85: ...d 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 compl...

Page 86: ...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...

Page 87: ...oxygen fluctuates 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 def...

Page 88: ...F display appears only with sensors that rely on the new ceramic or electrochemical detection principle Refer to 1 2 2 Detection principles and detection target gases for individual models The sensiti...

Page 89: ...wer setting 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 th...

Page 90: ...m 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 conn...

Page 91: ...as concentration display If the reading exceeds the detection range full scale exceeded appears on the LED display Power alarm lamp display The alarms are two step alarms The alarm lamps light up when...

Page 92: ...n falls below the alarm setpoint Alarm pattern H HH Alarm pattern L H Alarm pattern L LL Oxygen deficiency alarm Normal Alarm Reset ALM1 alarm lamp red ALM2 alarm lamp red ALM1 alarm contact ALM2 alar...

Page 93: ...remains constantly lit when reset Then the lamps go out when the gas concentration falls below the alarm setpoint NOTE To cancel an alarm press the MENU ESC key SET key key or key in detection mode Al...

Page 94: ...red ALM2 alarm lamp red ALM1 alarm contact ALM2 alarm contact ALM1 alarm lamp red ALM2 alarm lamp red ALM1 alarm contact ALM2 alarm contact ALM1 alarm lamp red ALM2 alarm lamp red ALM1 alarm contact...

Page 95: ...alarm lamp red ALM2 alarm lamp red ALM1 alarm contact ALM2 alarm contact ALM1 alarm lamp red ALM2 alarm lamp red ALM1 alarm contact ALM2 alarm contact ALM1 alarm lamp red ALM2 alarm lamp red ALM1 alar...

Page 96: ...tep 4 Approach the gas leak location and use a portable gas detector to check for the presence of any remaining gas CAUTION To avoid hazards while carrying out this work assume that the gas is still p...

Page 97: ...fied operating temperature range the concentration readout and warning number E 27 are displayed alternately Gas can still be measured in this state as this is not a product fault The external output...

Page 98: ...tion mode full scale exceeded 20 5 mA fixed 6 Outside operating temperature range 4 20 mA concentration output 7 Fault alarm 0 5 mA fixed 8 Inhibit 2 5 mA setting 2 5 mA 4 mA HOLD 4 20 mA setting 4 mA...

Page 99: ...ance mode Special care is required when starting the product or after altering specifications Make sure you fully understand the operation details Take appropriate precautions where necessary to preve...

Page 100: ...full scale of the L range For example when the target gas is isobutane readings between 0 and 2 000 ppm appear in the L range and the display switches to the H range for readings between 12 0 and 100...

Page 101: ...tion 101 168 4 20 mA H range setting Detection mode Maintenance mode External output 20 5 mA 20 mA 4 mA 2 5 mA 0 Full scale 20 mA output Gas concentration L range H range Zero suppression Full scale o...

Page 102: ...emperature range 4 20 mA concentration output 7 Fault alarm 0 5 mA fixed 8 Inhibit 2 5 mA setting 2 5 mA 4 mA HOLD 4 20 mA setting 4 mA 9 Alarm test mode Output ON setting 4 20 mA concentration output...

Page 103: ...ions where necessary e g setting to skip state to prevent false alarms on the receiving side Particular care is required in the following situations Examples where care is required Analog transmission...

Page 104: ...the 4 20 mA output setting in maintenance mode Special care is required when starting the product or after altering specifications Make sure you fully understand the operation details Take appropriate...

Page 105: ...xygen enabling the zero suppression function will give a reading of 20 9 vol for fluctuations in the vicinity of 20 9 vol up to the preset value Note that the standard preset value for the zero suppre...

Page 106: ...a sensor of different specifications e g detection principle and model Pressing the MENU ESC key makes the product recognize the sensor as a sensor with new specifications and start up If you did not...

Page 107: ...the concentration reading is zero or 20 9 vol for oxygen If the reading is offset perform zero calibration after confirming that no miscellaneous gas is present in the vicinity Alarm test Use the ala...

Page 108: ...that the dust filter is neither contaminated nor clogged Replace the filter if the filter is dirty or clogged Alarm test Use the alarm test function to inspect the alarm circuit Check alarm lamps Che...

Page 109: ...2 Performing zero calibration 2 2 Span adjustment Performs span adjustment Refer to 7 4 3 Performing span adjustment 2 3 Display This is not normally used by the user 2 4 Environmental settings 1 Conf...

Page 110: ...enance mode 1 Hold down the MENU ESC key for approximately three seconds in detection mode The product switches to user mode 2 Press the or key to select 1 3 then press the SET key The product switche...

Page 111: ...setting state If left in maintenance mode the product will take 10 hours to return to detection mode Detection will not be available during this time posing hazards NOTE If the password setting is ena...

Page 112: ...For information on gas test preparation refer to 7 4 1 Calibration preparation WARNING Depending on the settings contact and gas concentration outputs may be activated during gas testing even in maint...

Page 113: ...NOTE The procedure in step 3 is required even if the product is a no alarm relay model Note that the contact will not operate even when on is selected 1 Press the or key in maintenance mode several ti...

Page 114: ...setpoint The alarm lamp ALM1 lights up red when the first alarm is triggered The second alarm is triggered when the reading reaches the second alarm setpoint The alarm lamps ALM1 and ALM2 light up red...

Page 115: ...or key in maintenance mode several times to select 2 0 then press the SET key 2 Press the or key to select 2 0 2 then press the SET key 3 Press the or key to select on then press the SET key 4 Check...

Page 116: ...s to select 2 0 then press the SET key 2 Press the or key to select 2 0 3 then press the SET key 3 Press the or key to select on then press the SET key 4 Check to confirm that all LEDs light up 5 Once...

Page 117: ...e SET key 2 Press the or key to select 2 0 4 then press the SET key 3 Press the SET key The memory test starts 3 Check the memory test result No problems with memory PASS appears Problems with RAM F r...

Page 118: ...ration adapter NOTE Use a flow rate of 0 5 0 1 L min when calibrating Calibration accuracy may be reduced if calibration is performed using a different flow rate If the suction cap and calibration ada...

Page 119: ...168 Using a gas sampling bag The diagram illustrates the SD 3 The connection method for the remote sensor head GD 3 is identical NC GH SP Product SD 3 Calibration adapter a Gas sampling bag In Flowme...

Page 120: ...a gas can Using a gas can The diagram illustrates the SD 3 The connection method for the remote sensor head GD 3 is identical RI EC Product SD 3 Out To exhaust port In Calibration adapter NC GH SP Ou...

Page 121: ...ype Hot wire semiconductor type Electrochemical type Max 1 m s If calibration is unsuccessful fit the calibration adapter and calibrate again When calibrating adsorptive gas fit the calibration adapte...

Page 122: ...7 Maintenance 7 4 Performing calibration 122 168 Using a gas can The diagram illustrates the SD 3 The connection method is the same for the remote sensor head GD 3 Splash guard In...

Page 123: ...rting zero calibration For information on zero calibration preparation refer to 7 4 1 Calibration preparation WARNING Before performing zero calibration for the surrounding atmosphere confirm that the...

Page 124: ...o 2 1 when the SET key is pressed NOTE If zero calibration is unsuccessful because the zero point N2 in the case of oxygen fluctuates significantly around zero FAIL is displayed If this occurs zero ca...

Page 125: ...n maintenance mode several times to select 2 2 then press the SET key 2 Introduce the span adjustment gas then press the SET key The SET key is disabled if the reading is less than 10 of full scale 3...

Page 126: ...g the span adjustment gas and waiting for the reading to stabilize For double range span adjustment perform span adjustment first for the L range followed by the H range in succession If span adjustme...

Page 127: ...unsuccessful FAIL appears 8 Press the SET key Returns to the 2 2 display NOTE If span adjustment is unsuccessful because the reading fluctuates significantly compared to the concentration of the gas i...

Page 128: ...attern setting This is not normally used by the user 2 4 7 Zero suppression value setting This is not normally used by the user 2 4 8 Zero suppression type setting This is not normally used by the use...

Page 129: ...alarm setpoint AL2 Combustible gas First alarm setpoint to 60 of full scale H HH Other gases First alarm setpoint to full scale H HH 1 Press the or key in maintenance mode to select 2 4 then press the...

Page 130: ...set the last two digits of the year then press the SET key The selected item last two digits of the year flashes 4 Press the or key to set the month then press the SET key The selected item month fla...

Page 131: ...rmally used by the user 2 6 1 Energized de energized setting This is not normally used by the user 2 6 2 Maintenance external output setting This is not normally used by the user 2 6 3 External output...

Page 132: ...mA L range 16 20 mA H range 4 16 The default setting is 4 16 mA L range 16 20 mA H range 4 16 NOTE The double range external output setting can be set only with sensors that rely on the new ceramic d...

Page 133: ...rd for SD 3RI GHS 6 months 3 8 years 1 Sensor guard for SD 3NC GH SP Sensor guard for SD 3EC ECS ECB Gas sensor Refer to separate sensor specifications 1 Silicone removal filter 1 year 2 Activated car...

Page 134: ...ironment free of corrosive gas vibration and dust Avoid condensation and moisture Store in an environment free of gases that may act as a catalyst poison e g silicone chlorine sulfur gases SHF 0 5 10...

Page 135: ...hat may act as a catalyst poison e g silicone chlorine sulfur gases Store in the dedicated sensor storage container 5 Open the dedicated container just before use remove the sensor and mount in the de...

Page 136: ...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 prev...

Page 137: ...nnection cable not connected short circuit Check the wiring for the product and peripheral devices Fuse blown Replacement required Contact Riken Keiki Internal circuit abnormality Replacement required...

Page 138: ...cts of sudden surge noise Turn off the power and restart If similar symptoms recur frequently take appropriate measures to address the noise source If the problem persists even with noise prevention m...

Page 139: ...E 9 Clock abnormality Set the date and time Correction may not function correctly if the EC sensitivity correction function is enabled If similar symptoms recur frequently the internal clock may be de...

Page 140: ...Depends on sensor specifications Repeatability for identical conditions Depends on sensor specifications Indication accuracy for identical conditions Depends on sensor specifications Gas alarm type Tw...

Page 141: ...1 25 sq 1 38 mm2 AWG16 or 2 0 sq 2 08 mm2 AWG14 same as transmission cable To ensure explosion protection use a cable designed for use in temperatures at least 5 C above the maximum anticipated ambien...

Page 142: ...10 Product Specifications 10 1 SD 3 specifications 142 168 Dimensional drawings SD 3 model without EC barrier Diffusion type Suction type...

Page 143: ...rror code display Fault alarm reset operation System abnormality Self latching Sensor abnormality Auto reset self latching if sensor is disconnected Contact operation SPDT 3 2 alarms 1 fault output 25...

Page 144: ...ith sensor specifications if restrictions apply due to sensor specifications Operating humidity range 0 RH 95 RH no condensation In accordance with sensor specifications if restrictions apply due to s...

Page 145: ...10 Product Specifications 10 1 SD 3 specifications 145 168 Dimensional drawings SD 3 model with EC barrier Diffusion type Suction type...

Page 146: ...4 V DC 18 V 30 V DC Max 3 8 W SD 3GH 24 V DC 18 V 30 V DC Max 4 5 W SD 3GHS 24 V DC 18 V 30 V DC Max 4 5 W SD 3NC 24 V DC 18 V 30 V DC Max 4 5 W SD 3SP 24 V DC 18 V 30 V DC Max 3 5 W SD 3EC 24 V DC 18...

Page 147: ...arm H HH H L or L LL Gas alarm indication Alarm lamp lit red Gas alarm reset operation Auto reset or self latching Fault alarm self diagnosis System abnormality E 9 sensor abnormality E 1 Fault alarm...

Page 148: ...r 2 0 sq 2 08 mm2 AWG14 same as transmission cable To ensure explosion protection use a cable designed for use in temperatures at least 5 C above the maximum anticipated ambient temperature Power cons...

Page 149: ...10 Product Specifications 10 2 SD 3SC GD 3 specifications 149 168 Dimensional drawings SD 3SC GD 3 model without EC barrier Diffusion type...

Page 150: ...abnormality E 1 Fault alarm indication Fault lamp lit yellow error code display Fault alarm reset operation System abnormality Self latching Sensor abnormality Auto reset self latching if sensor is di...

Page 151: ...ximum anticipated ambient temperature Power consumption Refer to 10 2 3 Electrical ratings SD 3SC GD 3 Cable connectors M25 1 5 Operation method Dedicated magnet control key Operating temperature rang...

Page 152: ...10 Product Specifications 10 2 SD 3SC GD 3 specifications 152 168 Dimensional drawings SD 3SC GD 3 model with EC barrier Diffusion type...

Page 153: ...ption SD 3SC 24 V DC 18 V 30 V DC Max 5 W GD 3RI 24 V DC 18 V 30 V DC Max 1 2 W GD 3GH 24 V DC 18 V 30 V DC Max 2 W GD 3GHS 24 V DC 18 V 30 V DC Max 2 W GD 3NC 24 V DC 18 V 30 V DC Max 2 W GD 3SP 24 V...

Page 154: ...i C4H8 i C4H10 IRF 1308 n hexane n C6H14 100 LEL 0 5 LEL 25 LEL 50 LEL n C6H14 i C4H10 IRF 1332 Butadiene C4H6 100 LEL 0 5 LEL 25 LEL 50 LEL C4H6 CH4 Interference occurs due to other hydrocarbon gases...

Page 155: ...nction However we recommend using a sensor with a different detection principle where gas is constantly present The zero follower function cannot be used under such conditions The reading may change e...

Page 156: ...method the gas may form a mist when drawn in from the high temperature side and detected at the low temperature side possibly forming condensation inside the sensor or causing clogging due to sinterin...

Page 157: ...Under 10 minutes At least 1 hours At least 30 minutes Under 1 hour At least 2 hours At least 2 hours Under 24 hours At least 4 hours At least 4 hours Under 72 hours At least 24 hours At least 24 hours...

Page 158: ...or causing clogging due to sintering Keep vapor pressure in mind during use Perform maintenance if a warning appears while the life assessment or self diagnostic function is active Use the combustible...

Page 159: ...utes At least 1 hour Under 1 hour At least 30 minutes At least 2 hours Under 24 hours At least 1 hour At least 4 hours Under 72 hours At least 4 hours At least 24 hours Under 10 days At least 2 days A...

Page 160: ...adjusting if below 25 C Can be used for a total of one week between 40 C and 70 C 2 Allow the product to fully adjust to the usage conditions before adjusting if below 25 C Can be used for a total of...

Page 161: ...filter before being detected by the infrared sensor The optical filter selectively allows the passage of infrared light in the waveband absorbed by the detection target gas Principle When the detectio...

Page 162: ...gases sintered on top of a precious metal coil This compensates for atmospheric effects Principle When combustible gas burns on the surface of the detecting element heated to between 300 C and 450 C b...

Page 163: ...tal oxide semiconductor heated to between 350 C and 400 C by the heater coil The semiconductor maintains a constant resistance If a methane or other such gas comes into contact with this surface and b...

Page 164: ...detecting element is the combined resistance of the semiconductor resistance RS and the platinum coil resistance RH The detecting element is heated to between 300 C and 400 C by the platinum coil and...

Page 165: ...d to maintain a constant potential between the working electrode and reference electrode The detection target gas passes through the gas permeable membrane and undergoes electrolysis reaction on reach...

Page 166: ...ations below a set lower limit to minimize sensor output fluctuations not caused by gas such as temperature and humidity fluctuations and noise effects Alarm delay time This function temporarily suspe...

Page 167: ...certain sensors 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 warra...

Page 168: ...11 Appendix Revision History 168 168 Revision History Issue Revision details Issue date 0 First issue 1 25 2021 1 Complete revision 3 15 2021...

Page 169: ...11 Appendix Revision History 169 168...

Page 170: ...11 Appendix Revision History 170 168...

Page 171: ...11 Appendix Revision History 171 168...

Page 172: ...11 Appendix Revision History 172 168...

Page 173: ...11 Appendix Revision History 173 168...

Page 174: ...11 Appendix Revision History 174 168...

Page 175: ...11 Appendix Revision History 175 168...

Page 176: ...11 Appendix Revision History 176 168...

Page 177: ...11 Appendix Revision History 177 168...

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