Edwards ELD500 Series Instruction Manual Download Page 70

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D13510840D - Calibrated leak - He 4-6

Page 60

Figure 45 Wall/wooden panel mounting

Figure 46 Calibrated leak CL-HE 4 to 6 complete

1. Over-pressure manometer for

test gas pressure

5. Connecting flange DN 16 ISO-KF

2. Test gas supply shut-off valve

6. Shut-off valve for leak outlet orifice

3. Vent screw

7. Test gas bottle

4. Body with leak capillary

8. Holder

Summary of Contents for ELD500 Series

Page 1: ...edwardsvacuum com ELD500 ACCESSORIES INSTRUCTION MANUAL Publication number D13510840 Issue D Original Instructions...

Page 3: ...l 9 Inputs and outputs 9 RJ25 socket 10 Connections on the side 10 Wall plug in power supply 11 Operation 12 Starting up the ELD500 RC 12 Touch display operation 12 Display functions 13 Main menu for...

Page 4: ...nsmitter See Figure 30 29 Installation of the wireless transmitter See Figure 31 29 Technical specifications 30 SL Extender interface 31 Description 31 General 31 Purpose 31 Technical data 32 Technica...

Page 5: ...capillary filter 45 Checking replacing the sinter filter 45 Spare parts for sniffer lines 46 Waste Disposal 47 Partial flow adaptor 49 Warranty 49 Safety information 49 Purpose 49 Description 49 Parti...

Page 6: ...illary 65 Using search gases other than helium 65 Adjustment of leak rate 66 Calibrated leak He 8 69 Description 69 Technical data 69 Handling of calibrated leaks 70 Maintenance 70 Return of equipment...

Page 7: ...ibration command 260 106 PLC input state command 261 107 PLC output state command 262 107 PLC output configuration command 263 107 Cal history command 275 108 Error history command 287 108 TMP error h...

Page 8: ...nsmitter with plug and antenna 29 Wireless transmitter installed at leak detector 30 ELD500 SL extender interface 33 Connection of the SL extender interface to the ELD500 leak detector 35 Exchanging t...

Page 9: ...D13510840D Contents Page vii...

Page 10: ...This page has been intentionally left blank D13510840D Contents Page viii...

Page 11: ...alling accessories onto the ELD500 Important safety information is highlighted as WARNING and CAUTION instructions obey these instructions The use of WARNINGS and CAUTIONS is defined below WARNING War...

Page 12: ...D13510840D Introduction Page 2 This page has been intentionally left blank...

Page 13: ...s regarding safety operation and or maintenance the user should contact the nearest representative Restrictions of use Hazards in the event of intended use When handling the ELD500 RC Note The ELD500...

Page 14: ...ome overheated and cause burns Do not short circuit the battery of the ELD500 RC Wireless WARNING Possible explosion hazard The battery of the ELD500 RC Wireless can explode if it is extreme overheate...

Page 15: ...eing stored in unfavourable conditions too damp too hot too cold too high above sea level for months or years see Technical Data If the ELD500 RC has been stored under such conditions leave it switche...

Page 16: ...the display and an acoustic warning signal with variable pitch proportionally to the leak rate is sounded on the integrated loudspeaker or the connected headphones Operating Elements Figure 1 ELD500...

Page 17: ...hows measurements displayed numerically or as a curve indicates statuses and offers operating interfaces Operating LED Flashes during normal operation Charging LED ELD500 RC Wireless Lights up while t...

Page 18: ...nit on Alternatively it can also be connected by means of the enclosed cable similar to connecting the ELD500 RC Wired In this case only one connection cable must be used with the ELD500 RC Wireless n...

Page 19: ...l Figure 4 Contact area for ELD500 RC Inputs and outputs The inputs and outputs of the ELD500 RC have covers to prevent large dirt particles and moisture from penetrating Note The operating range of t...

Page 20: ...ctive plug in the socket when the cable is not connected Note We recommend only inserting and removing the RJ25 plug as often as is necessary for operation Note Fold the protective strip upwards befor...

Page 21: ...rol The LED switches off as soon as the battery has fully charged The battery can be charged during operation You can use the enclosed power supply all over the world adapt it with the interchangeable...

Page 22: ...area a message no data connection is displayed The establishing of a data connection is described in Connecting disconnecting ELD500 RC Wireless If a data connection with a leak detector is establishe...

Page 23: ...c functions Lock buttons Touch and hold the symbol for more than 2 seconds to lock out the touch display and the hardware buttons START STOP and ZERO operation The touch display then becomes dark Unlo...

Page 24: ...sconnect the main menu is displayed Connecting to a leak detector Figure 12 Display of connectable devices for the connection Pressing the Connect button of the main menu starts the search If devices...

Page 25: ...d with and The selected field is marked red and can be changed Use the numeric keypad to enter the desired digit After entering a digit the mark changes to the next field Confirm the set level with OK...

Page 26: ...s Opens a sub menu for the scaling of the time axis see Figure 16 Figure 15 Scale sub menu Scaling options of the leak rate curve and the bar graph Lin Log Toggle between linear and logarithmic For lo...

Page 27: ...ected leak detector can be adjusted within 15 volume levels Both devices play an example tone at the volume corresponding to the set levels Figure 17 Volume menu Setting the volume Set the volume of t...

Page 28: ...nu see Figure 21 Preparing and configuring of recording Figure 19 Recorder sub menu settings Select Auto record On to prepare the recording The recording to a new data file will start if the measureme...

Page 29: ...to the USB stick Apply the shown message with OK The USB stick can be unplugged Recorded data files can be deleted from the internal memory Figure 21 Recorder sub menu delete files Select the files b...

Page 30: ...the main menu with OK Miscellaneous In the Miscellaneous menu you can set the language make software updates set the time and the date and select energy saving options The menu point Service offers ex...

Page 31: ...he energy consumption and the operating time of the battery is extended Figure 24 Energy menu Set the time period for Backlight off with Arrow up and Arrow down The remote control can be turned off if...

Page 32: ...rol displays a menu page of the configuration you can change to the status display of the leak detector with Back The leak detector can be in the modes Runup or Stand By Figure 26 Runup and Stand By s...

Page 33: ...ical and bar graph Figure 28 Measure curve and Vented status displays STOP button Pressing the STOP button interrupts the measurements The inlet is vented if the button is pressed and held See the Ope...

Page 34: ...ce The ELD500 RC does not require any maintenance Only the battery of the ELD500 RC Wireless needs replacing if its storage capacity becomes less WARNING Possible short circuit hazard The battery migh...

Page 35: ...spose of the device in accordance with the applicable statutory provisions on the disposal of electronic devices especially also regarding the installed rechargeable battery Technical Data Weight dime...

Page 36: ...reless 8 hours depending on battery level Display TFT Touch 1 4 VGA 3 5 inch 240 x 320 px maximum error 4 px ELD500 RC Wireless charging voltage from power supply 24 V d c maximum 0 7 A ELD500 RC Wire...

Page 37: ...mation Product description Item number ELD500 RC Wired D13550100 ELD500 RC Wireless D13550110 Accessories 8 m extension cable 14022 Additional wireless transmitter to operate a second leak detector D1...

Page 38: ...D13510840D Page 28 This page has been intentionally left blank...

Page 39: ...reless transmitter 1 in a suitable location on the leak test device so that there is a direct line of sight between the transmitter and the remote control 2 Connect the connection cable of the wireles...

Page 40: ...gure 31 Wireless transmitter installed at leak detector Technical specifications 1 Wireless transmitter 2 RJ45 socket Producer SENA Frequency 2 4 GHz Power range 18 dBm Sensitivity 88 dBm Supply Integ...

Page 41: ...e If any damage is discovered report it immediately to the forwarding agent and insurer If the damaged part has to be replaced please get in touch with the orders department Purpose The ELD500 SL exte...

Page 42: ...all other gases Therefore this ceramic piece is called separator Detectable leak rate typical 10 6 mbar ls 1 Gas throughput Approximately 2 mbar ls 1 Gas inlet rate to the leak detector Approximately...

Page 43: ...is supplied to the separator From this quantity of gas only approximately 2 x 10 3 mbar ls 1 is supplied to the leak detector The remaining part is released to the ambient air A pushbutton marked TEST...

Page 44: ...operating instructions Vacuum connection Before making any connections check the seating of the O ring Figure 33 item 5 and the conical metal ring Figure 33 item 3 on the connection flange Figure 33 i...

Page 45: ...n up until the Stand by mode is reached By operating the pushbutton PUMP START pump the ELD500 SL extender interface down until it is ready for operation This is indicated by transition to leak rate i...

Page 46: ...the distance and the speed at which the probe is moved Therefore several runs with typical sniffing parameters are required until the maximum indication corresponds to the correct value as on the cal...

Page 47: ...Separator faulty or inserted with a leak Clearing the fault Recalibrate using a calibrated leak Exchange separator according to Exchanging the separator 4 Reaction to a calibrated leak is much too str...

Page 48: ...ump is maintenance free Exchanging the separator In case the separator has become contaminated or clogged it can be exchanged as follows Detach the ELD500 SL extender interface from the helium leak de...

Page 49: ...ance to Edwards indicate whether the appliance is free of substances damaging to health or whether it is contaminated If it is contaminated also indicate the nature of hazard To do so you must use a p...

Page 50: ...description Item number He separator for extended interface D13550201 Set 5 x O ring 22 x 5 and 5 x O ring 2 6 x 1 8 D13550202 Central connection piece D13550203 Diaphragm vacuum pump DC membrane pum...

Page 51: ...te and national agencies regarding specific requirements and regulations Address any further safety operation and or maintenance questions to our nearest office Risk clogging Liquid can cause clogging...

Page 52: ...splay is explained in the Technical Handbook of the leak detector Technical data Sniffer line length Figure 36 ELD500 SL general view Operating Display Element Function of the leak detector LED red Ex...

Page 53: ...llation Connection Figure 37 ELD500 SL connections with KF25 flange and 8 pin plug 1 Connect the ELD500 SL with KF25 flange to the inlet port of the leak detector 2 Connect the 8 pin plug of the ELD50...

Page 54: ...work Sniffer probe clogged Clogging of the sniffer probe may be due to Clogging of capillary filter refer to Replacing the felt discs or the capillary filter Clogging of sinter filter refer to Checki...

Page 55: ...llary filter and replace it If using the metallic version do not forget the seal Checking replacing the sinter filter Switch the leak detector off or disconnect the sniffer line Remove the two Phillip...

Page 56: ...sinter filter and the seal Reinstall the sniffer tip Now you can use the sniffer line again Spare parts for sniffer lines Product description Item number Spare filter 50 pieces D13550208 Capillary fi...

Page 57: ...d prices Further details are available on request Separate clean components by material make up and dispose of accordingly When sending any equipment back to Edwards observe the regulations provided i...

Page 58: ...D13510840D SL Sniffer line Page 48 This page has been intentionally left blank...

Page 59: ...if it is to be put into operation at a later date Retain the shipping container and the packaging materials in the event of complaints about damage Check that the partial flow adaptor is complete see...

Page 60: ...The only vacuum link which now exists to the ELD500 is via the bypass orifice see Figure 41 Thus the amount of gas flowing into the leak detector is so small that even at atmospheric pressure 1000 mba...

Page 61: ...the system besides the information given in these operating instructions Start up An overview of the arrangement of the partial flow adaptor is given in Figure 42 Switch the ELD500 off and disconnect...

Page 62: ...ne 10 Evactime 1 5 seconds or higher Line 29 the nominal pumping speed of the partial flow pump Connect the test sample to the partial flow valve block see Figure 42 item 2 Figure 42 Set of partial fl...

Page 63: ...with the relevant regulations We offer this service at fixed prices Further details are available on request Separate clean components according to their materials and dispose of these accordingly We...

Page 64: ...D13510840D Partial flow adaptor Page 54 This page has been intentionally left blank...

Page 65: ...touch with the orders department Technical Data Purpose The calibrated Leak CL Internal with the helium reservoir is used for alignment of the helium mass spectrometer in the helium leak detector as w...

Page 66: ...leak To enter the value of the calibrated leak please refer to the Technical Handbook Section The menu function Overview or the Description of the individual menu functions under menu item Cal leak 0...

Page 67: ...t office Technical data Calibrated Leak Nominal leak rate range 4 6 5 x 10 6 mbar ls 1 Uncertainty of the leak rate With manometer reading 0 bar and p 1 mbar at connecting flange 15 Leak rate Printed...

Page 68: ...fingers or greasy objects Retain the protection cap for the flange and fit it each time the calibrated leak is removed 1 Calibrated leak complete with manometer gas reservoir shut off valve and leak s...

Page 69: ...elivery can be used Apply strips of this tape on the basic plate as shown Apply the counter parts of the tape on the surface put carrier in the appropriate position on the tape strips Figure 44 Vertic...

Page 70: ...ting Figure 46 Calibrated leak CL HE 4 to 6 complete 1 Over pressure manometer for test gas pressure 5 Connecting flange DN 16 ISO KF 2 Test gas supply shut off valve 6 Shut off valve for leak outlet...

Page 71: ...bottle 3 Remove protective cap from new test gas bottle 4 Screw in the new reservoir hand tight right up to the stop 5 Open the test gas supply on the reservoir the knob turns downwards See Figure 46...

Page 72: ...test gas supply so that the pressure reaches the pressure of the test gas cylinder 10 Close test gas supply Repeat process steps 6 through 10 twice so as to ensure that the gas reservoir ahead of the...

Page 73: ...the type of gas 1 Close all valve the knob turns upwards 2 Unscrew the old test gas bottle 3 After removing the protective cap screw on the new test gas bottle 4 Open the test gas supply See Figure 46...

Page 74: ...torque of 2 5 Nm by turning it in the clockwise direction how often this will be required will depend on how much the calibrated leak is being used Thereafter it must be easily possible to turn the k...

Page 75: ...n the pressure gauge and it may be determined from the calibration curve Using search gases other than helium When using test gases other than helium leak rates can only approximately be determined th...

Page 76: ...can be found in Figures 49 or 50 Upon request individual calibration of a single test leak as a function of the search gas pressure can be made in our factory at cost price If you suspect the nominal...

Page 77: ...D13510840D Calibrated leak He 4 6 Page 67 Figure 49 Diagram leak rate pressure sniffing operation Figure 50 Diagram leak rate pressure vacuum operation...

Page 78: ...D13510840D Calibrated leak He 4 6 Page 68 This page has been intentionally left blank...

Page 79: ...e actual leak is not closed The helium supply which lasts for more than 10 years flows continuously through the leak and collects before the valve when it is closed On opening the valve the accumulate...

Page 80: ...the manufacturer can be repaired only when certain procedures are followed Read form HS1 and fill out HS2 which can be found at the back of printed manuals or can be downloaded from http edwardsvacuu...

Page 81: ...Edwards office Safety Information The calibrated leak is only designed for the described purpose see Description A different use can cause risks for health and for the calibrated leak To ensure the c...

Page 82: ...operating pressure that is exposed to the calibrated leak is below 20 bar the transport casing can be glued as a retainer for the calibrated leak into the test sample Advantage The calibrated leak is...

Page 83: ...mpanied by a contamination statement Waste disposal The equipment may have been contaminated by the process or by environmental influences In this case the equipment must be decontaminated in accordan...

Page 84: ...D13510840D Calibrated leak screwed socket Page 74 This page has been intentionally left blank...

Page 85: ...ges ASCII protocol Advantages human readable easy to use with simple terminal program Disadvantages No checksum therefore lower data security PC PLC software must convert numerical values from ASCII s...

Page 86: ...9 way sub D socket at the leak detector The signals are assigned as follows The other pins are not used The levels on the RS 232 interface are defined as follows A standard RS232 cable can be used str...

Page 87: ...r the command for setting data the command has to be followed by the new value to be set Parameter can be Boolean or numerical Always use a point as the decimal marker If a comma is used during numeri...

Page 88: ...CR request value trigger 1 conf trig1 2 0E 9 CR OK CR set value trigger 1 config vacrange CR FINE_ONLY CR status vacuum range config vacrange gross_only CR GROSS_ONLY CR Setting gross only mode CLS c...

Page 89: ...ror number ERRorHist 1 Error history starting from 1 to 12 ERRorHist 2 ERRorHist 12 ZERO zero TURBO Device state TMP RANGE measuring mode GROSS FINE PRECISION PART1 PART2 PART3 PREAMPresistor Pre ampl...

Page 90: ...ssure atm MBAR foreline pressure mbar PA foreline pressure Pa TORR foreline pressure torr OFFset offset current A IMess current raw values A IFilter current filtered A UNV amplifier voltage V UVV pre...

Page 91: ...te external test leak in sniffer mode CALREQ calibration request on off CAThode cathode 1 2 CONTrol control location LOCAL RS232 PLC LOCAL RS232 LOCAL PLC ALL TRIGger1 trigger 1 TRIGger2 trigger 2 TRI...

Page 92: ...nimum volume PLCINlink 1_1 Digital in control pin 1 1_2 Digital in control pin 2 1_3 Digital in control pin 3 2_1 Digital in control 2 pin 1 2_2 Digital in control 2 pin 2 2_3 Digital in control 2 pin...

Page 93: ...ENIX L300i h SERVice FORE service foreline pump h FILTER service filter h TIME actual time TURBO operating hours TMP RUNup Run up time POWer Time since power on min FACtor CORrection correction factor...

Page 94: ...ntrol Deactivate flow control in PC PLC or use cable according to the wiring diagram in Section 2 Wrong COM Port used at PC Select correct COM Port Wrong interface parameters Baud rate Data bits Parit...

Page 95: ...s with Carriage Return ASCII 0dhex 13dez ELD500 replieswith E06 Control via RS232 not enabled in the ELD500 Enable control via RS232 see sub menu control location ELD500 replieswith error message to t...

Page 96: ...3 3 DATA Data belonging to master request 0 n 248 Slave reply to write command is sent without data If I O module 7 byte additional header is used then limit maximum data length to 241 CRC Checksum C...

Page 97: ...s 0 no data no array 1 data no array 2 255 array 3 Byte Bit 0 1 Reading allowed 0 Reading not allowed Bit 1 1 Writing allowed 0 Writing not allowed Bit 2 7 always 0 not used Value Meaning Acronym Comm...

Page 98: ...byte and values in following DATA bytes All elements of an array have the same Min Def Max value Commands Command dec Command hex Name Data type Read Write Min Def Max value Meaning 0 0000 NOP NO_DATA...

Page 99: ...01A Interface protocol UINT8 2 R W REMOTE 1 2 4 4 5 Interface protocol SERIAL 0 0 5 Index 0 REMOTE 1 2 Index 1 SERIAL see table enumerations 27 001B Used interface UINT8 R Used interface 0 REMOTE 1 2...

Page 100: ...ours h UINT32 R Leak detector operation hours h 144 0090 TMP temperature electronic deg C FLOAT R 10 0 150 TMP temperature electronic C 145 0091 TMP temperature bearing deg C FLOAT R 10 0 150 TMP temp...

Page 101: ...CC Pre amplifier voltage mod mV FLOAT R 0 0 2000 Pre amplifier voltage mod mV 208 00D0 24 V supply valve V FLOAT R 0 0 54 24 V supply valve V 212 00D4 24 V power out RC V FLOAT R 0 0 54 24 V power out...

Page 102: ...only 260 0104 Calibration status UINT8 3 R Calibration status Index 0 task state Index 1 calibration mode Index 2 calibration state see table enumerations 261 0105 PLC input state UINT8 R 0 0 127 PLC...

Page 103: ...OFF 1 STANDBY 2 ON 266 010A TMP actual status UINT8 R 0 0 4 TMP actual status 0 OFF 1 ON 2 RUNNING_UP 3 RUNNING_DOWN 4 FAIL 275 0113 Calibration history CHAR R Calibration history To read send after t...

Page 104: ...history To read send after the array index 255 the UINT8 history list index TD400 0 11 TDS 0 7 see table enumerations 290 0122 Number of actual error UINT8 R 0 0 255 Error number of the actual error...

Page 105: ...version MC68 Index 0 Main version Index 1 Sub version Index 2 Debug version 315 013B SW version TMP controller UINT8 3 R SW version TMP controller Index 0 Main version Index 1 Sub version Index 2 Inde...

Page 106: ...r 3 390 0186 Test leak extern vacuum mbar l s FLOAT R W 1 0E 9 1 0E 7 0 01 Test leak extern vacuum mbar l s 392 0188 Test leak extern sniff mbar l s FLOAT R W 1 0E 6 1 0E 5 0 1 Test leak extern sniff...

Page 107: ...Volume Volume min 421 01A5 Volume min UINT8 R W 0 0 15 Volume min 430 01AE Pressure unit UINT8 R W 0 0 3 Pressure unit 0 mbar 1 Pa 2 atm 3 Torr 431 01AF Leak rate unit UINT8 R W 0 0 7 Leak rate unit 0...

Page 108: ...X 2 0 3 8 Index 1 CONTROL Pin 2 INDEX 3 0 4 8 Index 2 CONTROL Pin 3 INDEX 4 0 5 8 Index 3 CONTROL 2 Pin 1 INDEX 5 0 6 8 Index 4 CONTROL 2 Pin 2 Index 5 CONTROL 2 Pin 3 see table enumerations 442 01BA...

Page 109: ...1 470 MOhm 2 15 GOhm 3 500 GOhm 4 13 MOhm fixed 5 470 MOhm fixed 6 15 GOhm fixed 7 500 GOhm fixed 504 01F8 500GOhm value FLOAT R W 30 33 26 40 Factor 15 GOhm to 500 GOhm 506 01FA Mass UINT8 R W 2 4 4...

Page 110: ...1 0E6 Factor sniff 530 0212 Cathode selection UINT8 R W 0 0 1 Cathode selection 0 cathode 1 1 cathode 2 540 021C Pressure EVAC GROSS mbar FLOAT R W 3 15 15 Pressure limit EVAC GROSS mbar 541 021D Pres...

Page 111: ...Audio alarm delay UINT16 R W 0 30 60000 Audio alarm delay 0 1 2 3 10 12 14 30 35 40 100 110 120 300 330 360 600 60000 infinite 604 025C Audio beep UINT8 R W 0 1 1 Audio beep 0 disabled 1 enabled 620...

Page 112: ...0 0546 Valve cycle counter UINT32 11 R 0 0 10000000 00 Valve cycle counter see table enumerations 1352 0548 Next service fore pump FLOAT R 0 0 9500 Next service fore pump 1354 054A Next service filter...

Page 113: ...ect R W UINT8 0 0 1 Contamination protection 0 disabled 1 enabled 2500 09C4 Last parameter set CHAR R Last parameter set see table enumerations 2501 09C5 Parameter set UINT8 R W Parameter set 0 load d...

Page 114: ...it 2 Bit 3 Sniffer button Bit 4 ZERO Bit 5 Still warning Bit 6 Range 0 Bit 7 Range 1 Bit 8 Range 2 Bit 9 Trigger 1 exceeded Bit 10 Trigger 2 exceeded Bit 11 Trigger 3 exceeded Bit 12 Bit 13 Device War...

Page 115: ...range 0 000 NO RANGE 1 001 GROSS 2 010 FINE 3 011 NO RANGE 4 100 PRECISION 5 101 PARTIALFLOW 1 6 110 PARTIALFLOW 2 7 111 PARTIALFLOW 3 Value Meaning 0 ASCII SERIAL only 1 Diagnostics SERIAL only 4 ELD...

Page 116: ...2 5 V decade 4 5 V decade 5 10 V decade Value Index 0 Meaning 0 Task idle 1 Task start 2 Task running 3 Task stop Value Index 1 Meaning 0 CAL idle 1 CAL internal no user action required 2 CAL externa...

Page 117: ...OL Pin 2 0x04 CONTROL Pin 3 0x08 CONTROL 2 Pin 1 0x10 CONTROL 2 Pin 2 0x20 CONTROL 2 Pin 3 0x20 OPTION Pin 6 0x80 Value Meaning 0x01 CONTROL Pin 5 6 7 0x02 CONTROL Pin 8 9 10 0x04 CONTROL Pin 11 12 13...

Page 118: ...3 01 24 08 54 EXT VAC 9 220E 01 Answer ListNo year month day hour min type number Example 0 13 01 24 08 57 E72 Answer ListNo operating hours frequency code Example 5 483 23 1145 123 Value Meaning 0x00...

Page 119: ...aning 0 NOT_USED 1 START 2 STOP 3 ZERO 4 CAL 5 CAL_INTERN 6 CAL_EXTERN 7 CLEAR 8 GAS_BALLAST Value Index Bit Meaning 0 V1 1 V2a 2 V2b 3 V3 4 V4a 5 V4b 6 V6 7 V7 8 V8 external 9 V9 external 10 V10 exte...

Page 120: ...from colliding with the next request the slaves do not respond in case of a timeout Error numbers for Stw Bit 15 to 1 In case of error STX LEN Stw Cmd and one Data Byte with error number sent Answer N...

Page 121: ......

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