manualshive.com logo in svg

EQUYSIS ULTRA-E-F, Руководство пользователя, Страница: 9 / 63

Поделиться
Скачать
EQUYSIS ULTRA-E-F Скачать руководство пользователя страница 9

6 

ULTRA-E-F 

 

 

PART-2 CLAMP-ON TRANSDUCER INSTALLATION 

 

 

General 

The  transducers  that  are  utilized  by  the  Series  ULTRA-E-F  contain  piezoelectric  crystals  for 

transmitting  and  receiving  ultrasound  signals  through  walls  of  liquid  piping  systems.  The 

transducers  are  relatively  simple  and  straight-forward  to  install,  but  spacing  and  alignment  of 

the transducers is critical to the system's accuracy and performance. Extra care should be taken 

to ensure that these instructions are carefully executed. 

Mounting of the clamp-on ultrasonic transit time transducers is comprised of three steps: 

 

Selection of the optimum location on a piping system. 

 

Entering the necessary parameters into the ULTRA-E-F keypad. (ULTRA-E-F will 

calculate proper transducer spacing based on these entries (menu 25)) 

 

Pipe preparation and transducer mounting. 

 
 

 

Mounting Location 

The  first  step  in  the  installation  process  is  the  selection  of  an  optimum  location  for  the  flow 

measurement. For this  to be done effectively, a basic knowledge of the piping system  and its 

plumbing is required. 

An optimum location is defined as: 

A piping system that is completely full of liquid when measurements are being taken. 

The 

pipe may become completely empty during a process cycle - which will result in an error code 

being displayed on the flow meter while the pipe is empty. Error codes will clear automatically 

once the pipe is  filled with liquid.  It  is  not  recommended to  mount the transducers in  an area 

where  the  pipe  may  become  partially  filled.  Partially  filled  pipes  will  cause  erroneous  and 

unpredictable operation of the meter. 

 

A piping system that contains lengths of straight pipe such as those described in Table 

2.1

.  The  optimum  straight  pipe  diameter  recommendations  apply  to  pipes  in  both  horizontal  

and  vertical  orientation.  The  straight  runs  in  Table  2.1  apply  to  liquid  velocities  that  are 

nominally  7  FPS  [2.2  MPS].  As  liquid  velocity  increases  above  this  nominal  rate,  the 

requirement for straight pipe increases proportionally. 

 

Mount  the  transducers  in  an  area  where  they  will  not  be  inadvertently  bumped  or 

disturbed during normal operation. 

 

Avoid  installations  on downward flowing  pipes 

unless  adequate  downstream  head  pressure  

is present to overcome cavitations in the pipe. 

Table 2.1 Requirement of Straight Pipe Length 

Содержание ULTRA-E-F

Страница 1: ...ULTRA E F Transit Time Ultrasonic Flow Meter Clamp on Manual ...

Страница 2: ...T 4 WINDOWS DISPLAY EXPLANATIONS 20 PART 5 OUTPUT FUNCTIONS 28 4 20mA Output 28 OCT Pulse Output 28 Relay Output 29 RS485 Output 29 MODBUS RTU Protocol 29 Data Storage Function 31 PART 6 HOW TO USE MENU FUNCTIONS 33 Use Menu Windows for Transducer Mounting Inspection 33 How to Judge Whether the Instrument works Well on Site 34 How to Judge the LiquidFlowing Direction 35 How to Reset the Default Se...

Страница 3: ...Temperature Sensors 50 6 Clamp On TemperatureSensors Installation 50 7 Insertion TemperatureSensors Installation 51 APPENDIX 3 MOUNTING FRAME INSTALLATION 52 0B Int1 ro duction 52 1B 2 M M ounting Frame Installation 52 Parts List of M Mounting Frame 52 Installation Steps for V and W Transducer Mounting Methods 53 Installation Steps for Z and N Transducer Mounting Methods 56 3 S Mounting Frame Inst...

Страница 4: ... time flow meter utilizes two transducers that function as both ultrasonic transmitters and receivers The transducers are clamped on the outside of a closed pipe at a specific distance from each other The transducers can be mounted in V method where the sound transverses the pipe twice or W method where the sound transverses the pipe four times or in Z method where the transducers are mounted on o...

Страница 5: ...ow interrupted A pair of sensors can satisfy different materials wide different pipe diameters Clear user friendly menu selections make ULTRA E F series simple and convenient to use 4 Lines display can display total flow flow rate velocity and meter run status Parallel operation of positive negative and net flow totalizes U S British and Metric measurement units are available Meanwhile almost all ...

Страница 6: ...outputs are isolated from earth and system grounds Data storage function 4 20mA 1000 ohm max Accuracy 0 1 Frequency output From F out for flow rate or total flow Relay output for total flow or alarm RS485 Modbus RTU output Option Wireless handheld operator GPRS Display 4 line 16 English letters LCD it can display total flow flow rate velocity and meter run statusetc Units Rate Totalizer User Confi...

Страница 7: ...all mounted Transducers Ex proof type ATEX K transducer High temperature transducer S Transducer M Transducer L Transducer M Mounting Frame V method andZ method S Mounting Frame V method and Z method Accessories Stainless Steel Strap Flexible belts Couplant ...

Страница 8: ...5 ULTRA E F K mode transducers Size A B C D K1 3 4 1 55 39 42 34 K2 3 4 1 1 1 4 64 46 42 43 K3 1 1 4 1 3 4 2 80 46 42 61 ...

Страница 9: ...quired An optimum location is defined as A piping system that is completely full of liquid when measurements are being taken The pipe may become completely empty during a process cycle which will result in an error code being displayed on the flow meter while the pipe is empty Error codes will clear automatically once the pipe is filled with liquid It is not recommended to mount the transducers in...

Страница 10: ...nce from each other The transducers can be mounted in V mode where the sound transverses the pipe two times W mode where the sound transverses the pipe four times or in Z mode where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once W mode provides the longest sound path length between the transducers but the weakest signal strength Z mode provides the st...

Страница 11: ...pe 10 Fluid sound speed Nominal values for these parameters are included within the ULTRA E F operating system The nominal values may be used as they appear or may be modified if exact system values are known After entering the data listed above the ULTRA E F will calculate proper transducer spacing for the particular data set This distance will be in inches if the ULTRA E F is configured in Engli...

Страница 12: ... operate will be acceptable Figure 2 2 2 Place the upstream transducer in position and secure with a mounting strap Straps should be placed in the arched groove on the end of the transducer A screw is provided to help hold the transducer onto the strap Verify that the transducer is stick to the pipe adjust as necessary Tighten the transducer strap securely 3 Place the downstream transducer on the ...

Страница 13: ... the end of one transducer to another sensor The transducer mounting spacing is very important for Transit time meters and users need mount transducers exactly according to the spacing distance value M25 displays after users input proper parameter settings M91 is only for reference and just keep it within 97 103 value range As the above figure shows the normal transducer spacing refers to the dist...

Страница 14: ...of weak signal strength and or inaccurate readings The section below details a method for properly locating the transducers on larger pipes This method requires a roll of paper such as freezer paper or wrapping paper masking tape and a marking device 1 Wrap the paper around the pipe in the manner shown in Figure 2 4 Align the paper ends to within 6 mm 2 Mark the intersection of the two ends of the...

Страница 15: ...Figure 2 2 Generally a silicone based grease is used as an acoustic couplant but any grease like substance that is rated to not flow at the temperature that the pipe may operate at will beacceptable a Place the upstream transducer in position and secure with a stainless steel strap or other Straps should be placed in the arched groove on the end of the transducer A screw is provided b Try to help ...

Страница 16: ...32 was used ensure that no relative movement between the transducer and the pipe takes place during the setting time and do not apply instrument power for at least 24 hours Dow 111 also be used for permanent installations avoid rain or water etc setting time is not necessary We recommend using Dow 111 for permanent installing and then use Dow732 around the transducer in order to fix the transducer...

Страница 17: ... the ULTRA E F system If this is not possible it is recommended that the cable be exchanged for one that is of proper length Transducer cables that are up to 990 feet 300 meters may be accommodated 2 Mount the ULTRA E F transmitter in a location that is Where little vibrationexists Protected from falling corrosivefluids Within ambient temperature limits 40 to 131 F 40 to 55 C Out of direct sunligh...

Страница 18: ...appropriate size hole in the enclosure s bottom Use extreme care not to run the drill bit into the wiring or circuit cards TransmitterWirings Figure 3 2 Transmitter Wirings To access terminal strips for electronic connectors loosen the two screws in the enclosure door and open the door Guide the transducer terminations through the transmitter conduit hole located in the bottom center of the enclos...

Страница 19: ...with other signal wires within the same wiring tray or conduit Keypad Configuration Keypad functions After transducer and connection of appropriate power supply to ULTRA E F keypad configuration of the instrument can be undertaken Generally there should be no display of error messages and the flow meter will go to the most commonly used Menu Window Number 01 short for M01 to display the Velocity F...

Страница 20: ...iameter just press the keys for window Address code 11 Another method to visit a particular window is to press and ENTER keys to scrollthe menu For instance if the current window Address code is 66 press key to enter Window No 65 press the again to enter Window No 64 then press the key to back Window No 65 and press the key again to enter WindowNo 66 Example 1 To enter a pipe outside diameter of 2...

Страница 21: ...t turn totalizers on off and reset totalizes etc 40 49 windows for Setup options Scale factor network IDN Window No 46 system lock Window No 47 and keypad lock code Window No 48 etc 50 89 windows for Input and output setup relay output setup 4 20mA outputs flow batch controller LCD backlit option date and time low high output frequency alarm output date totalizer etc 90 94 windows for Diagnoses Si...

Страница 22: ... enter Window No 14 press the key move the or key to select pipe material and press the key 4 Press the key to enter Window No 16 press the key move the or key to select liner material and press the key 5 Press the key to enter Window No 20 press the ENTER key move the or key to select fluid type press the key 6 Press the key to enter Window No 23 press the key move the or key to select transducer...

Страница 23: ... of the value M12 Window for entering pipe wall thickness M13 Window for entering the inside inner diameter of the pipe If user had entered the parameters of M11 and M12 M13 is not necessary to enter automaticallydisplay and can t change M14 Window for selecting pipe material familiar pipe materials include The materials must be equable compact and can transmit ultrasound 0 Carbon steel 1 Stainles...

Страница 24: ...ped transducer 80 4500mm M24 Window for selecting the transducer mounting method XDCR Mounting Four methods can be selected 0 V method 1 Z method 2 N method 3 W method M25 Important Display the transducer mounting spacing Users need mount transducers exactly according to the spacing distance value M25 displays after users input correct parameter setting M26 Entry to store the parameter configurati...

Страница 25: ...hort for m3 1 Liter l 2 American Gallon gal 3 Imperial Gallon igl 4 Million Gallon American mgl 5 Cubic Feet cf 6 American Liquid Barrel bal 7 Imperial Liquid Barrel ib 8 Oil Barrel ob The flow unit in terms of time can be per day per hour per minute or per second So there are 36 different flow rate units in total for selection M32 Window for selecting Totaliziers Unit working unit default is cubi...

Страница 26: ... called zero point When the Zero Point is not really at zero the incorrect read value is going to be added into the actual flow values Set Zero must be carried out after the transducers are right installed and the flow inside is in the absolute static state no liquid moved in the pipe line Set Zero also is very important step when recalibrating the meter in lab Doing this step enhances the measuri...

Страница 27: ...ey M51 Logger Time on Keypad as below Start Interval 00 05 00 It means it is notime limit Go On M52 Internal data logging direction control To RS 232 M53 CL Calibration 4 20mA output calibration Press ENTER when ready Meter window will display M53 CL Calibration Pre ENT When Ready M53 Use a Ammeterto verify CL Calibration 4mAoutput if not use 4mA 035_ key or let the output is 4 0mA Use the same wa...

Страница 28: ...eries ULTRA E F flow meter M62 Communication setup 115200 None M63 Temperature range of inlet temperature sensor for heat flow application wiring terminals is Tin Tin Press ENTER and use key or to input temperature upper limit and lower limit M64 Temperature range of Outlet temperature sensor for heat flow application wiring terminals is Tout Tout Press ENTER and use key or to input temperature up...

Страница 29: ...er input source is selected the buzzer will beep when the trigger event occurs 0 No Signal 1 Poor Signal 2 Not Ready state error 3 Reverse Flow 4 Analog Output overflow100 5 Frequency Outputoverflow120 6 Alarm 1 7 Alarm 2 not used 8 Batch Control 9 Positive IntPulse 10 Negative Int Pulse 11 EnergyPulse 12 ON OFF viaRS232 13 Fluid Changed fluid sound speed changed 14 Key Stroke ON ring when press k...

Страница 30: ...ed Normally this value should be approximately equal to the entered value in Menu 21 when M20 the fluid type select Other If this value has an obvious difference with the actual fluid sound speed pipe parameters entered and the transducer installation should be checked again If Menu20 the fluid type doesn t select Other this window is no matter with user M 1 Calibrate T1 at 0 We have already done ...

Страница 31: ...he 4 20mA is for the positive direction The output module options are displayed in Window M54 Enter 1000 in Window M55 and 2000 in Window M56 Calibrating and testing the current loop is performed in Window M57 Complete the steps as follows Press Menu 5 7 ENTER move or to display 0mA 4mA 8mA 16mA 20mA readings connect an ammeter to test the current loop output and calculate the difference Calibrate...

Страница 32: ... RELAY select the corresponding totalizer in Menu 79 and setup the minimum display totalizer increments in Menu 33 Every time the totalizer increases a value set in M33 the relay closed one time When the relay is used for alarm output connect terminal RELAY select the corresponding item in Menu 79 it can be used for several alarm condition For example select Alarm 1 set Alarm 1 Low Value in Menu 7...

Страница 33: ... address is 0x16 Function Code One byte 03 read data from registers Register address of data start Two bytes expressed in Hex and high bit is before low bit For example read data from Flow Velocity Start Register Address is 00 08 Length of Register Address Two bytes expressed in Hex and high bit is before low bit For example read data from Flow rate per day to Net totalizer the length is 00 10 CRC...

Страница 34: ...izer return bytes length is 0x20 Return data Section Four bytes for per data expressed in Hex and high bit is before low bit For example read Flow rate per hour and the flow rate is 100m3 h then return data section is 42 C8 00 00 CRC Code Two bytes expressed in Hex and high bit is before low bit Data Storage Function Menu Setup In M60 it is setup of date and time for meter the date format is YY MM...

Страница 35: ...ore when pulling out the SD card to copy data for a long while the meter will loss partial data The meter has a buffer of 60 data if the interval time is 5s the buffer time is300s Read Data When downloading data it will create a new folder in U Disk the naming rules of the folder is meter address M46 folder number For example meter address is 1 and the first time of download data the folder name i...

Страница 36: ...Quality displayed in Window M90 It indicates the level of the signal detected In the ULTRA E F Q value is indicated by numbers from 00 99 00 represents the minimum signal detected while 99 represent the maximum Normally the transducer position should be adjusted repeatedly and couplant application should be checked frequently until the signal quality detected is as strong as possible Transit Time ...

Страница 37: ...ameters have been entered accurately Check to be sure the transducer mounting method has been selected properly the pipe is not worn out and the liner is not too thick Make sure there is fluid in the pipe or the transducer is not very close to a valve or elbow and there are not too many air bubbles in the fluid etc With the exception of these reasons if there is still no signal detected the measur...

Страница 38: ...k the wirings If the wirings are OK customers need replace the transducers or send them back for repair 3 If the two S values are both 0 it means the transmitter or transducers have problem Check the wirings if the wirings are OK customers need replace the meter or send it back for repair How to Judge the Liquid Flowing Direction Make sure that the instrument works properly Check the flow rate for...

Страница 39: ...installations a provision is made in this entry to establish True Zero flow SETUPZERO There exists a Zero Point with certain installation which means the flow meter will display a non zero value when the flow is absolutely stopped In this case setting a zero point with the function in window M42 will bring a more accurate measurement result When do a calibration test it is also veryimportant Make ...

Страница 40: ... 1 8 digits password and after keypad locked all keys are invalid and the LCD displays the menu that uses entered before enter Menu 48 If the password of system lock or keypad lock is forgotten please contact the factory for a common password How to Set Date andTime Use the windowM60 press ENTER key and then input the new data and the new time Press the ENTER key to confirm ON OFF Totalizer Window...

Страница 41: ...lf diagnostics once again to detect and solve possible errors using the table below If a problem still exists please contact the factory or the factory s local representative for assistance Table 2 applies when errors caused by incorrect settings and signals are detected and are announced by error codes displayed in Window M07 Table 1 Self diagnoses and error solutions upon power on LCD Display Ca...

Страница 42: ... a measurement location The instrument may run properly at a new site with less scale Wait until liners solidified and saturated H Low Signal Strength Low signal strength Cause refers to above mentioned reasons Solution refers to above mentioned solutions H Poor Signal Quality Poor signal quality All reasons are included in the above mentioned causes Solution refers to above mentioned solutions E ...

Страница 43: ...h respect to each other around the installation point until the maximum signal is detected Be careful that the new installation location is free of scale inside the pipe and that the pipe is concentric not distorted so that the sound waves do not bounce outside of the proposed area For pipe with thick scale inside or outside try to clean the scale off if it is accessible from the inside Note Somet...

Страница 44: ...nder strong interference conditions and is able to adjust itself with strong or weak sound waves It will work in a wide band of voltage 90 240VAC or 9V 28VDC voltage Q Why is the pipe not full of liquid or no flow in pipe but still displays an unstable or wrong reading A Pipe must be full of liquid if not ENTER the menu window M29 setup a EMPTY PIPE Q VALUE less than normal Q value pipe is full of...

Страница 45: ...e made according the cost 1 For any hardware failure of the instrument we recommend that our customers send back the instrument to our factory for service due to the fact that the instrument is made of microprocessors and it will be difficult to perform field maintenance Before sending back the instrument please try to contact the factory first to make sure what the problem is 2 For other operatio...

Страница 46: ... ULTRA E F will calculate the transducer spacing in Menu 25 The transducer spacing is distance between the centre points of two insertion transducers Z method is the most commonly used mounting method for insertion type ultrasonic flow meters suitable for pipe diameters ranging from 80mm to 4500mm Due to strong signal strength and high measurement accuracy the Z method is preferable for pipe secti...

Страница 47: ...hod Fig 4 Mark the overlapping line between the folded end and the other end of the paper mark A point as shown Fig 5 Mark C point A and C into 180 symmetric extended C level again determined to point B L BC L is transducer spacing in Menu 25 Fig 6 Remove the positioning paper prepare weld the ball valve bases on A and B point note that the center point of Ball Valve Base coincidences with the A B...

Страница 48: ...rength and signal quality time ratio within the range of 97 103 Screw one transducer or another transducer let the value of Menu 90 at least 60 The scale factor is used to modify the measurement results factory default is 1 0 or other value depends on calibration The user can enter a numerical value other than 1 0 according to re calibration results ...

Страница 49: ...mperature signals from outside When calculating energy T1 connects to inlet sensor and T2 to outlet sensor Menu 06 displays the corresponding temperature 3 Energy Calculation Energy Flow thermal enthalpy at T1 temp thermal enthalpy at T2 temp This thermal enthalpy is automatically calculated by heat meter according to international standard Menu 84 Energy unit selection kWh GJ optional Menu 85 Tem...

Страница 50: ... is provided by manufacturer For measurement accuracy test security convenient maintenance and not affect equipment operation and production operation we should pay attention to the following before installation 1 Should be rationally choose installation position avoid the valve elbow and equipment installed with thermal resistance 2 For measuring the fluid temperature of pipe center generally the...

Страница 51: ... Installation Parts List of M Mounting Frame Table 1 Parts List of M Mounting Frame Parts Name Quantity Function Picture Brackets 2 To install transducer Guide Rods See table 2 To fix brackets Graduated Scale 1 Position transducer precisely Copper Screws 2 To fix bracket and metal chains Metal Chains 2 To surround pipe and fix brackets Latchs 4 To connect brackets and chains Nuts 2 To fix copper s...

Страница 52: ...read Two rods with inside thread Four rods with outside thread Installation Steps for V and W Transducer MountingMethods When using V or W method to install transducers install the two transducers on the same side of pipeline A Install the guide rods In the parts list there are two brackets and the two brackets are exactly the same Select one bracket and install guide robs on it When finishing gui...

Страница 53: ...her tool to locate the transducer spacing C Install metal chains Suppose the side we install graduated scale as bracket upside On the bracket downside use latch 1 to connect bracket and metal chain shown as the following pictures On the metal chain end use latch 2 to connect copper screw and metal chain D Fix the bracket on pipeline According to the pipe size adjust the latch 2 s position on metal...

Страница 54: ...et on pipeline F Install transducer When the mounting frame has been installed it is shown as the following picture Make sure that the reading of graduated scale should be the same as transducer spacing displayed in Menu 25 of flowmeter In practical application in order to increase signal quality Q and make ratio value in the range of 100 3 maybe need to adjust transducer mounting spacing a little...

Страница 55: ...eld Flowmeter Flat view Installation Steps for Z and N Transducer Mounting Methods When using Z or N method to install transducers install the two transducers respectively on the opposite sides of pipeline Installation steps are as follow A Install metal chain Refer to step C in steps for V and W method Due to install the two transducers on the opposite sides of pipeline do not use guide rods and ...

Страница 56: ...sducer spacing we can make a sign on the same side at first then make another sign on the other side ofpipeline When finishing the installation it will show as follow D Install the transducer Equably spread couplant on measuring side of transducer and then put transducer into bracket from broadside make sure pipeline and transducer have good coupling Use screws to fix transducers Refer to the foll...

Страница 57: ...S Mounting Frame Parts Name Quantity Function Picture Brackets 2 To install transducer Guide Rod 1 To fix brackets Retaining Plates 2 To retain brackets Stainless Steel Screws 4 To connect bracket and retaining plate Combination Nuts 8 To fix screws Combination Screws 8 To fix transducers Screws 2 To fix guide rod Wing Nuts 4 To fix retaining plate ...

Страница 58: ...ucer and bracket Notes 1 Keep transducer end face and bracket end face at the same plane 2 In the package the stainless steel screws and combination screws are already installed on the brackets B Install guide rod Use two screws to fix guide rod When fixing guide rod we should pay attention to transducer mounting spacing The spacing between two transducers should be the same as the value shown in ...

Страница 59: ...e of pipe and use wing nuts to fix them When finishing installation it will show as follow Notes Do not over tighten to prevent couplant extrusion Installation Steps for Z and N Transducer Mounting Methods When using Z or N method to install S transducers install the two transducers respectively on the opposite sides of pipeline Installation steps are as follow A Fix transducer in bracket Refer to...

Страница 60: ... coupling Put the retaining plates on another side of pipe and use wing nuts to fix them C Install the other transducer Based on the transducer mounting spacing Menu 25 repeat steps A and B to install the other transducer Notes Do not over tighten to prevent couplant extrusion ...

Страница 61: ...691 Bromine 2930 889 2916 7 3 0 0 323 0 946 n Butane 600 1085 3559 7 5 8 Butyrate Ethyl 1170 3836 1 Carbon dioxide 1100 839 2752 6 7 7 0 137 0 151 Carbon tetrachloride 1600 926 3038 1 2 5 0 607 0 968 Chlorobenzene 1110 1273 4176 5 3 6 0 722 0 799 Chloroform 1490 979 3211 9 3 4 0 550 0 819 Diethyl ether 710 985 3231 6 4 9 0 311 0 222 Diethyl Ketone 1310 4295 1 Diethylene glycol 1120 1586 5203 4 2 4...

Страница 62: ...44 Refrigerant 114 1460 665 3 2182 7 3 73 Refrigerant 115 656 4 2153 5 4 42 Refrigerant C318 1620 574 1883 2 3 88 Silicone 30 cp 990 990 3248 30 000 29 790 Toluene 870 1328 4357 4 27 0 644 0 558 Transformer Oil 1390 4557 4 Trichlorethylene 1050 3442 6 1 1 1 Trichloro ethane 1330 985 3231 6 0 902 1 200 Turpentine 880 1255 4117 5 1 400 1 232 Water distilled 996 1498 4914 7 2 4 1 000 0 996 Water heav...

Страница 63: ...79 1 44 1534 9 69 1554 5 94 1547 5 20 1482 3 45 1536 3 70 1554 7 95 1547 1 21 1485 3 46 1537 7 71 1554 9 96 1546 3 22 1488 2 47 1538 9 72 1555 0 97 1545 6 23 1491 1 48 1540 2 73 1555 0 98 1544 7 24 1493 9 49 1541 3 74 1555 1 99 1543 9 3 Pipe Material Sound SpeedTable Equipos y Sistemas para Medir y Tratar Agua S A de C V Matehuala No 109 Mitras Centro Monterrey Nuevo Leon cp 64460 Phone 81 1970 89...

Отзывы:

Нет отзывов