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4. How to Use

 

4-3. Precautions for system designing 

 

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4-3. Precautions for system designing 

 
 
 
 
 
 
 
 
 
 
 

Using a stable power supply 

The external output and alarm contact of the gas detector may be activated when the power is turned on, 
when momentary blackout occurs, or when the system is being stabilized. In such cases, use a UPS 
(uninterruptible power system), or take appropriate actions on the receiving side. 
The gas detector must be provided with the following power supply. 
 

Power supply 

voltage 

100 - 240 VAC (terminal voltage of the gas detector) 50/60 Hz 
Supply voltage fluctuations up to ±10% 

Allowed time of 

momentary 

blackout 

Up to 500 milliseconds 
(To recover from the momentary 
blackout for 500 milliseconds or more, 
restart the gas detector.) 

Example of actions 
To ensure continuous operation and 
activation, install a UPS (uninterruptible 
power system), etc. outside the gas 
detector. 

Others 

Do not use it with a power supply of 
large power load or high-frequency 
noise. 

Example of actions 
Use a line filter, etc. to avoid the noise 
source if necessary. 

 

Heat radiation designing 

When it is installed in the closed instrumentation panel, attach ventilation fans above and below the panel. 
 
 
 
 
 
 
 
 
 
 

Introducing protective measures against lightning 

If cables are installed outside the factory/plant, or if internal cables are installed in the same duct as the 
cables coming from outside the factory/plant, "lightning" will cause problems. Because lightning acts as a 
large emission source while cables act as a receiving antenna, devices connected to the cables may be 
damaged. 
Lightning cannot be prevented. Cables installed in a metal conduit or under the ground cannot be 
completely protected from inductive lightning surge caused by lightning. Although complete elimination of 
disasters caused by lightning is impossible, the following protective measures can be taken. 
 

Protection 

against lightning 

Take appropriate measures in accordance with the importance of the facilities and the 
environment. 

  Connect the transmission signal route by using optical fiber. 

  Provide protection by a lightning arrester (cable arrester).   

(Although inductive lightning surge can be transmitted through the cable, it is 
prevented by installing a lightning arrester before the field devices and central 
processing equipment. For information on how to use a lightning arrester, please 
contact the manufacturer.) 

Grounding 

In addition to lightning, there are more sources of surge noise. To protect units from 
these noise sources, the units must be grounded. 

   

 

 CAUTION 

  An unstable power supply and noise may cause malfunctions or false alarms. 

The descriptions in this section must be reflected on the designing of a system using the gas 
detector. 

  Careful consideration should be given to instrumentation to maintain safety even when a trouble 

like disconnection of power/signal cable or unexpected malfunction or failure occurs. 

   

 

 CAUTION 

When the internal temperature of the gas detector reaches about 60ºC, the power will be turned off. 
Since the internal temperature rises to ten-odd degrees higher than the ambient temperature, take care 
not to let the ambient temperature exceed 30ºC. Provide a clearance of 30 mm or more above the gas 
detector to prevent a rise in the internal temperature. 

Summary of Contents for TP-70DGII

Page 1: ...PT5E 0581 Gas Detector TP 70DGII Operating Manual...

Page 2: ...perating procedures 25 5 3 How to activate the gas detector 25 5 4 Modes 28 5 5 Detection mode 29 5 6 Alarm test mode 30 5 7 User mode 31 5 8 How to exit 35 6 Operations and Functions 36 6 1 Gas alarm...

Page 3: ...t an analyzer or densitometer which performs quantitative qualitative analysis measurement for gases Please fully understand the features of the gas detector before using it so that it can be used pro...

Page 4: ...labeled on the detector in case of comply with CE marking Please confirm the instrument specification before using Please refer Declaration of Conformity that is at the end of this manual if you have...

Page 5: ...for defects When seeming defects are found in the protective functions such as protective grounding do not start the gas detector External connection Before connecting the gas detector to a detection...

Page 6: ...etector in a place where combustible explosive gases or vapors are present Operating the gas detector in such an environment will lead to extreme dangers Response to gas alarm Issuance of a gas alarm...

Page 7: ...hus condensation must be avoided In addition to the installation environment carefully monitor the temperature humidity of the sampling point to prevent condensation inside the tube In particular when...

Page 8: ...7 3 3 Product Components 3 1 Main unit and standard accessories Main Unit Standard Accessories Operating Manual Protective rubber cap to be removed when using the gas detector Dust filter Silica gel...

Page 9: ...lly for the gas detector Do not use a similar product It will not function normally Display unit Sensor unit CAUTION Each unit consists of precision parts When a unit is detached be careful not to dro...

Page 10: ...front cover This is used to open close the front cover 4 External terminal plate Connect cables for external signals 4 20 mA and contacts 5 Sampling gas inlet outlet GAS IN Connect a sample gas sucti...

Page 11: ...bnormality is detected in the gas detector 10 Gas name display Displays a gas name in chemical formula etc e g Silane SIH4 11 Concentration value display Displays the gas concentration and so on 12 Un...

Page 12: ...pull it out If the sensor unit is hard to detach insert a finger into the gap at the top right of the sensor unit and pull it out When attaching the sensor unit to the main unit thrust it onto the ma...

Page 13: ...ump unit cover With the pump unit cover opened the pump located inside can be pulled out Attach the pump in the reverse order After attaching the pump check that the pump unit cover is fixed securely...

Page 14: ...r units cannot be stored together with other units Please contact RIKEN KEIKI for more information 3 4 Block diagram Tubing Diagram CAUTION The sensor unit must be handled carefully to ensure quality...

Page 15: ...ON ALARM Closed contact at an alarm state Alarm contact controller Transmitter NT specification Digital data transmission Ethernet and PoE specifications Ethernet and 4 20 mA DC transmission Display P...

Page 16: ...ibrations or shocks and it cannot drop CAUTION This is a precision device Because the gas detector may not provide the specified performance in some places environments check the environment in the in...

Page 17: ...the temperature Keep the gas detector and its cables away from noise source devices When selecting installation points avoid a place where high frequency high voltage devices exist Do not install the...

Page 18: ...d to the cables may be damaged Lightning cannot be prevented Cables installed in a metal conduit or under the ground cannot be completely protected from inductive lightning surge caused by lightning A...

Page 19: ...l relay at a lower voltage of 100 VAC or below contact amplification At the same time the surge absorbing part SK1 suitable for the specifications must be attached to the external relay In addition th...

Page 20: ...100BASE T or higher Cable specification Single wire 5 m maximum for a stranded wire Modular plug RJ 45 Number of cores 8 core Wire connection Straight Figure of Terminal Plate 1 2 3 4 5 6 7 8 9 10 24...

Page 21: ...on 200 VAC system prepare a power cable that supports 200 VAC The power cable is provided only for the case that the power voltage is 100 VAC system requested The provided power cable supports 100 VA...

Page 22: ...PLC EA specification with Ethernet Upper unit DCS PLC Upper unit PC PLC Power supply 100 240 VAC Power supply 100 240 VAC RJ45 connector Switching hub CAUTION Do not use a switching hub equipped with...

Page 23: ...ON Be sure to use a switching hub equipped with PoE function with the PoE specification If the PoE function is unavailable the power will not be supplied to the display unit Upper unit PC PLC Power su...

Page 24: ...pling inlet and outlet GAS IN GAS OUT of the gas detector detected gases may be leaked from its inside thus leading to dangers Be sure that excessive pressure is not applied to the gas detector while...

Page 25: ...ive rubber cap from GAS IN and GAS OUT If the gas detector is turned on with the rubber caps remaining while the installation applied overload may damage the pump and sensor Never fail to remove the c...

Page 26: ...ctor enters the detection mode immediately after the start up flow Warm up Time Unpowered time lasts one week or more Warm up the gas detector for 24 hours or more Note that the warm up time can be re...

Page 27: ...and then turn on the power switch of the display unit After the gas detector completes the start up it enters the detection mode swiftly Warm up the gas detector for a specified period to obtain accur...

Page 28: ...the sensor memory during the initial clear When the power is turned off to perform replacement or maintenance of parts the gas detector needs to be warmed up for a specified period which is determine...

Page 29: ...settings First alarm setpoint AL1 Second alarm setpoint AL2 Alarm delay time Zero suppression value Zero follower ON OFF Sensitivity correction ON OFF Flow Rate Indicator 1 3 FLOW Display the current...

Page 30: ...hown on the figure below when the flow rate does not correspond to the specified flow rate for some reasons it is adjusted automatically Low flow rate Excess flow rate Normal flow rate CAUTION If the...

Page 31: ...0 ppm TEST OFF MAINTENANCE First Alarm When the reading reaches the first alarm the ALM1 lamp lights up When Contact ON is selected the first alarm contact is activated 5 0 ppm TEST OFF MAINTENANCE Se...

Page 32: ...MAINTENANCE SET 0 50 L M MAINTENANCE 1 4 ADDRESS This is not used on the gas detector 1 4 ADDRESS MAINTENANCE 1 5 70D VER Display the program version of the main unit 1 5 70D VER MAINTENANCE SET 01234...

Page 33: ...SET MAINTENANCE SET A COM SET MAINTENANCE A Analog transmission E Ethernet EA Ethernet and analog transmission E COM SET MAINTENANCE EA COM SET MAINTENANCE 1 9 M MODE Switch to the regular maintenance...

Page 34: ...l the reading is stabilized PW AL1 AL2 F LCD 1 1 ZERO Press SET key 1 1 ZERO MAINTENANCE Current Concentration Value Display Press the SET key to perform the zero adjustment 1 1 ppm ZERO SET MAINTENAN...

Page 35: ...isplay 5 0 ppm AL 1 MAINTENANCE Second Alarm Setpoint Display 10 0 ppm AL 2 MAINTENANCE Alarm Delay Time Display seconds 2 ALM DLY MAINTENANCE Zero suppression value display 0 9 ppm SUPPRESS MAINTENAN...

Page 36: ...ning off the gas detector the inhibit point skip on the upper central system must be activated Decide whether the power can be turned off by checking the operation of the devices connected to the exte...

Page 37: ...factory set Although the alarm delay time standard two seconds works in the gas detector to prevent a false activation it can be canceled if not needed Display Operation Gas Concentration Display In c...

Page 38: ...ttern H HH Alarm Pattern L LL oxygen deficiency alarm Alarm delay time 2 seconds Alarm delay time 2 seconds Alarm lamp ALM 1 Alarm contact terminal plate 5 6 Alarm lamp ALM 2 Alarm contact terminal pl...

Page 39: ...k that the gas concentration reading is dropped Assuming that gases remain wear protective equipment to avoid dangers and go to the gas leak point and then check if gases remain using a portable gas d...

Page 40: ...ode gas alarm 4 20 mA concentration output Concentration data Alarm bits 3 Initial Clear Depending on the setting of 4 2 5 mA setting 2 5 mA 4 mA HOLD 4 20 mA setting 4 mA Initial bit 4 Maintenance Mo...

Page 41: ...a time server can correct the clock at regular intervals Modbus slave function Modbus TCP Works as a Modbus slave and feeds back a setting value in response to a read request or changes a setting val...

Page 42: ...anagement rules of gas alarm This function is used to hide suppress the fluctuation of the reading under the setting value indicating zero Example COS 0 15 ppm rated range 0 5 ppm COS Suppression Func...

Page 43: ...f sensor used with the gas detector might have sensitivity variations after being used for a long period This function compensates the deterioration of the gas sensitivity among the sensitivity variat...

Page 44: ...e than the one that has been replaced CHG UNIT USED SEN Check for correct installation if this message is displayed because an old sensor might have been installed by mistake C 02 CHG SPEC MAINTENANCE...

Page 45: ...rrect perform the zero adjustment after ensuring that no other gases exist around it Flow rate check See the flow rate indicator to check for abnormalities Filter check Check the dust filter for dust...

Page 46: ...Inspects the alarm circuit by using the alarm test function Checks the alarm lamps Checks each activation of ALM1 and ALM2 Checks the external alarm Checks the activation of the external alarm Span a...

Page 47: ...ET 3 MAINTE Regular replacement operation pump stop This is not used on the gas detector SET 4 F TEST Fault alarm test P52 Environmental setting 2 P53 2 10 SETTING2 Functions setting SET 0 ADDRESS Add...

Page 48: ...7 Mode Item LCD display Details Pyrolyzer data display P62 2 11 PL DATA Display various pyrolyzer data Fault investigation 2 12 FAULT Not used Catalyst aging function P64 2 13 PL AGING Perform aging o...

Page 49: ...INTENANCE SET 0 2 ppm GAS TEST MAINTENANCE Alternate Display 0 2 ppm COS MAINTENANCE 2 1 ZERO Perform zero adjustment 2 1 ZERO MAINTENANCE SET Zero adjustment P65 2 2 SPAN Perform span adjustment 2 2...

Page 50: ...TEMP MAINTENANCE 2 8 WARMTIME Display the suggested warm up completion date time for semiconductor type SGU which requires a long warm up time This is not used on the gas detector 2 8 WARMTIME MAINTEN...

Page 51: ...gate and analyze the causes of faults This is not used by the user 2 12 FAULT MAINTENANCE 2 13 PL AGING Used to perform aging of catalyst 2 13 PL AGING MAINTENANCE SET Catalyst aging function P64 2 14...

Page 52: ...ered to external circuits even though the gas detector is in the detection mode SET 0 INHIBIT MAINTENANCE SET OFF INHIBIT MAINTENANCE ON INHIBIT MAINTENANCE INHIBIT SET 1 ALM P Set the alarm value SET...

Page 53: ...kip this menu 10 0ppm AL 2 MAINTENANCE Return to SET 1 ALM P Fault Alarm Test 2 9 SET 4 PW A1 A2 F LCD SET 4 F TEST Press SET key SET 4 F TEST MAINTENANCE Fault Alarm Test ON OFF Select either ON OFF...

Page 54: ...CE SET 1 DAY TIME Set the date time of the main unit SET 1 DAY TIME MAINTENANCE SET Date and time setting P58 SET 2 SUPPRESS Set the suppression value Change the value by pressing the or key and then...

Page 55: ...ss the SET key to confirm the selection When ON is selected the external output 4 20 mA is output even during an alarm test When OFF is selected the output is kept at the one just before the alarm tes...

Page 56: ...ector is used in a normal way because it determines how the gas detector functions Auto reset setting nL SET 10 FLT PTRN MAINTENANCE SET 11 AT FLOW Set the flow rate auto adjustment Select either ON O...

Page 57: ...electrochemical type ESU is installed Select either ON OFF and then press the SET key to confirm the selection When ON is selected the sensitivity correction function is activated SET 14 S ASSIST MAIN...

Page 58: ...the selection When ON is selected the backlight lights up continuously When SAVE is selected the backlight is usually turned off but lights up only during an operation or event SET 17 BK LIGHT MAINTEN...

Page 59: ...and then press the SET key to confirm the value 12 00 2009 01 01 MAINTENANCE Date Setting Change the value by pressing the or key and then press the SET key to confirm the value 12 00 2009 01 01 MAINT...

Page 60: ...t Alarm Contact Setting Select either nd de energized nE energized and then press the SET key to confirm the selection Press the MODE key to skip this menu nd FLT RLY MAINTENANCE nE FLT RLY MAINTENANC...

Page 61: ...E MAC2 MAC6 IP Address Setting Change the value by pressing the or key and then press the SET key to confirm the value There are IP addresses from IP1 to IP4 Select one using and keys and set them one...

Page 62: ...DHCP MAINTENANCE ON DHCP MAINTENANCE Setting result record To record the results of the settings made in the above press the SET key SAVE MAINTENANCE SET SPAN Y N MAINTENANCE Return to MAC Address Che...

Page 63: ...CE PL 2 PL SET Press the or key to change the setting of pyrolyzer heater temperature and then press the SET key to confirm the value PL 2 PL SET MAINTENANCE SET 120 C PL SET MAINTENANCE PL 3 PL AMP1...

Page 64: ...3 3V MAINTENANCE PL 7 PL 5 0V Display the pyrolyzer 5 0 V output PL 7 PL 5 0V MAINTENANCE SET 5000 mv PL 5 0V MAINTENANCE PL 8 PL VER Display the pyrolyzer version PL 8 PL VER MAINTENANCE SET 01234 A...

Page 65: ...he pyrolyzer temperature is adjusted to 700 C automatically When 700 C is reached it is kept for two hours 700 C PL AGING MAINTENANCE Two hours later the pyrolyzer temperature is adjusted to the setti...

Page 66: ...d PW A1 A2 F LCD 2 1 ZERO Press SET key 2 1 ZERO MAINTENANCE Current Concentration Value Display Press the SET key to perform the zero adjustment 1 1 ppm ZERO SET MAINTENANCE Zero Adjustment Completed...

Page 67: ...se of less than 10 FS this is not switched to the next menu 2 0 ppm SPAN GAS MAINTENANCE Span Adjustment Because the reading will be fixed adjust the introduced gas concentration by pressing the or ke...

Page 68: ...e menu returns to 2 2 SPAN automatically 8 0 ppm SPAN END MAINTENANCE Return to 2 2 SPAN When the span adjustment fails 8 0 ppm SPAN NG MAINTENANCE Return to 2 2 SPAN CAUTION Exhaust gas must be colle...

Page 69: ...sed or decreased by pressing the or key the flow rate changes accordingly Adjust the flow rate to 0 5 L min and then press the SET key Press the MODE key to cancel this menu 50 0 50 L M MAINTENANCE Cl...

Page 70: ...nit 0 5 years 1 2 years 1 2 Flow sensor 1 year 5 years 1 4 Fan 0 5 years 2 4 years 1 5 Catalyst tube 0 5 years 1 year 1 6 Sensor unit 0 5 years 1 year 1 7 Tubes and joints 0 5 years 3 8 years 8 C4F6 C...

Page 71: ...st be checked by a qualified service engineer Since the catalyst tube has an influence over gas sensitivity calibration needs to be performed after replacement Please contact RIKEN KEIKI Sensor Unit R...

Page 72: ...light In a place where gases solvents or vapors are not present 8 2 Procedures to relocate the gas detector or use it again When the gas detector is relocated select a new place in accordance with 4 2...

Page 73: ...or turn OFF the power and contact RIKEN KEIKI immediately When the gas detector is disposed of it must be treated properly as an industrial waste in accordance with the local regulations WARNING Do no...

Page 74: ...cuit Check the wiring of gas detector and related devices around it Fuse disconnection Find out why the fuse has blown and take appropriate actions before replacing it If the power still cannot be tur...

Page 75: ...ilter Replace the dust filter Unstable flow caused by bended or clogged suction tube or exhaust tube Fix the defective parts Pressure difference is present in the sampling condition The flow rate is e...

Page 76: ...of the clock inside the gas detector Make a setting of Date Time Note that when the sensitivity correction function of ESU is used correction may not be made properly If such a symptom is observed re...

Page 77: ...information on actions such as removal filter please contact RIKEN KEIKI Disturbance by noise Turn off and restart the gas detector If such a symptom is observed frequently take appropriate measures...

Page 78: ...play First ALM1 lamp blinks or lights up Red Second ALM2 lamp blinks or lights up Red Gas alarm pattern Auto reset or self latching Gas alarm contact No voltage contact 1a or 1b 2 step independent De...

Page 79: ...ication Digital transmission Ethernet Analog transmission 4 20 mA DC no insulation load resistance under 300 Transmission cable Shielded twisted pair cable 1 25 sq of KPEV S etc 1P Digital transmissio...

Page 80: ...electrochemical type sensor The electric potential between the working electrode and reference electrode is kept at a certain level by a potentiostat circuit The gas to be detected is electrolyzed di...

Page 81: ...the analog signal output must be used for an indicator or external recorder If these outputs are used to control other units we shall not be responsible for any malfunctions 4 Because the contact poin...

Page 82: ...nd a signal to indicate the maintenance mode status is sent out to the external output signal As a result maintenance can be performed on a single unit of the gas detector Initial clear The reading is...

Page 83: ...11 Definition of Terms 82...

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