Hach Ultra MET ONE 227 User Manual
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Hach Ultra MET ONE 227 User Manual

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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
701094
MET ONE 227
Particle Counter
USER MANUAL
May 2008, Edition 6

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Summary of Contents for Hach Ultra MET ONE 227

  • Page 1 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com 701094 MET ONE 227 Particle Counter USER MANUAL May 2008, Edition 6...
  • Page 2 701094 MET ONE 227 Particle Detector USER MANUAL May 2008, Edition 6 © Hach Ultra Analytics, Inc., 2008. All rights reserved. Printed in the U.S.A.

  • Page 4: Table Of Contents

    2.3 Theory of operation........................9 Section 3 Installation ........................11 3.1 Unpack the instrument ....................... 11 3.2 Installation guidelines for the MET ONE 227 particle counter ........... 11 3.3 Mechanical installation....................... 12 3.3.1 Install the isokinetic probe....................12 3.3.2 Install the purge filter......................12 3.3.3 Install the charging stand ....................
  • Page 5 Table of Contents Appendix A Computer Interface Operations ................43 A.1 Data analysis for ISO 14644 ......................43 A.1.1 Computer communications ....................43 Appendix B PortAll Software ......................47 B.1 Connections ..........................47 B.2 Operation ...........................47 Appendix C DPU-414 Printer ......................49 C.1 Printer setup ..........................49 C.2 Counter setup for the printer......................51 C.3 Interpret the printout ........................52 Index...

  • Page 6: Section 1 Specifications

    Section 1 Specifications Specifications are subject to change without notice. General Dimension (W x H x L) 101.60 mm x 58.42 mm x 165.10 mm (4.0" x 2.3" x 6.5") Weight 1 kg (2.13 lb) Maximum count displayed 9,999,999 Sample flow rate 0.1 cfm Number of size ranges 2 (second size range can be selected at the front panel)
  • Page 7 Specifications...

  • Page 8: Section 2 General Information

    Section 2 General Information 2.1 Safety information Read this entire manual before unpacking, setting up or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment. To make sure that the protection provided by this equipment is not impaired, do not use or install this equipment in any manner other than that specified in this manual.

  • Page 9: Laser Safety Information

    General Information 2.1.3 Laser safety information This particle counter contains a laser-based sensor that is a Class 1 product (as defined by 21 CFR, Subchapter J, of the Health and Safety Act of 1968) when used under normal operation and maintenance. The manual contains no procedures for service of internal parts within this unit.

  • Page 10: General Product Information

    (cfm). The flow rate is required to set the sampling parameters. For instance, the MET ONE 227 particle counter takes 10 minutes to sample 1 cubic foot of air. To obtain the counts per cubic foot, multiply the results of a 1-minute sample by ten. All counts are reported as cumulative counts;...
  • Page 11 General Information Figure 2 Theory of operation Sample inlet Sample exhaust Sensor Serial data out Pump Control electronics Filter Display...

  • Page 12: Section 3 Installation

    Charging stand (Catalog No. 2080469) 3.2 Installation guidelines for the MET ONE 227 particle counter The MET ONE 227 particle counter is ready to use when shipped and is configured in a default mode (refer to section 4.2 on page 15).

  • Page 13: Mechanical Installation

    MET ONE 227 particle counter. The filter prevents the contamination of the sensor and purges the sensor of accumulated internal particles. To install the purge filter: 1. Remove the red sensor inlet cap or the isokinetic probe from the MET ONE 227 particle counter. 2. Attach the purge filter to the sensor inlet.

  • Page 14: Install The Charging Stand

    Figure 3 on page 11, item 5) is used to charge the internal battery and use the MET ONE 227 particle counter with a standard 115 VAC outlet. To connect the AC adapter: 1. Turn off power to the MET ONE 227 particle counter.
  • Page 15 Installation...

  • Page 16: Section 4 Operation

    Section 4 Operation 4.1 Power up Use the power switch at the bottom of the counter to turn on the MET ONE 227 particle counter (refer to Figure 5 on page 13, item 3). When first turned on, the counter will...

  • Page 17: Automatic Mode

    Table 2 on page 17 describes all the common functions of the MET ONE 227 particle counter. The MET ONE 227 particle counter need not be programmed in a sequential order and any parameter may be programmed at any time without affecting the others.
  • Page 18 Operation Figure 7 Example of a sampling pattern Sections of a large room (1–8) Table 2 MET ONE 227 particle counter function descriptions Function Description Stop Count cycle status when the count cycles are complete. Count cycle status for 2-second pause to allow the pump to come up Wait to speed before starting first count cycle.
  • Page 19 Operation Table 2 MET ONE 227 particle counter function descriptions (continued) Function Description Temp = Changes temperature readout from °F to °C. When the printer is connected, results are printed at the end of each RS232 Mode = Print a Record count cycle.

  • Page 20: Unlock The Program Mode

    Operation 4.4.1 Unlock the program mode To program the MET ONE 227 particle counter, unlock the Program mode. Note: The Program mode is unlocked at the factory by default. To unlock the Program mode: 1. Press on the main screen.
  • Page 21 If infinity (INF) is selected, the 2 (INC) 3 (DEC) MET ONE 227 particle counter will continue to count cycles until manually stopped. 7. Press to save the settings and return to the main screen.

  • Page 22: Set Serial Input/Output (Sio) Functions

    Operation 4.4.3 Set serial input/output (SIO) functions 4.4.3.1 Clear the memory buffer Clear the memory buffer to remove data records that were stored previously. To clear the memory buffer: 1. Press on the main screen 3 (SIO) 2. Press to display the Buffer Count screen (refer to Figure 12).
  • Page 23 MET ONE 227 particle counter will stop the count. 4. Move the MET ONE 227 particle counter to the next location that needs to be sampled. If required, reprogram the Location Number to reflect the movements in the room.

  • Page 24: Average Mode

    Operation 4.5 Average mode In the Average mode, the MET ONE 227 particle counter counts for the number of sample periods programmed and then stops. The results displayed for both the channels are the average results of all the cycles. The minimum and maximum number of counts in all cycles are also displayed.

  • Page 25: Concentration Mode

    Figure 17 Completed samples screen 4.6 Concentration mode The Concentration mode in the MET ONE 227 particle counter can be used to take a quick snapshot of airborne particulate contamination levels, but cannot be used as a substitute for full sampling. The Concentration mode is appropriate for areas where the particulate levels are unknown and may exceed the operating limits of the MET ONE 227 particle counter.
  • Page 26 Figure 19 Concentration mode (10-second period) 10-second period Recalculation and display update Seconds To program the MET ONE 227 particle counter for the Concentration mode: 1. Press on the main screen. 2 (DSP) 2. Press to display the Count mode screen (refer to Figure 20).

  • Page 27: Beep Mode

    1,000 particles, the beep will sound at 1,000, 2,000, 3,000 and so on. There are two size channels displayed at once and the MET ONE 227 particle counter beeps when either particle size range limit is reached. Set a limit for only one size range of interest and set the remaining range to zero, which generates no alarm.
  • Page 28 Operation To program the MET ONE 227 particle counter for the Beep mode: 1. Press on the main screen. 2 (DSP) 2. Press to display the Count mode screen (refer to Figure 23). 2 (NXT) Figure 23 Count mode 3. Press to enter the Program mode.

  • Page 29: Program The Temperature Probe

    Operation 4.8 Program the temperature probe The MET ONE 227 particle counter displays the temperature readings of the optional environmental probe in degree Celsius (°C) or degrees Fahrenheit (°F). To program the temperature display: 1. Press on the main screen and then repeatedly press...

  • Page 30: Section 5 Maintenance

    To clean the sensor: 1. Remove the four screws (two on each side) from the MET ONE 227 particle counter. 2. Remove the two screws from the bracket on the top end of the MET ONE 227 particle counter. 3. Open the two halves of the unit apart. Pull the back of the unit slightly downward to enable the sensor inlet to have an opening at the top of the counter.
  • Page 31 Maintenance...

  • Page 32: Section 6 Troubleshooting

    6.2 Reset the counter If for any reason the MET ONE 227 particle counter begins to perform out of character (for example, incorrect date and time), clear the counter memory and start the microprocessor again.

  • Page 33: Troubleshoot The Pump

    Troubleshooting Figure 26 Default mode screen 3. Press to return to the main screen. 4 (RET) 4. Program the date and time and any other function that may have been set to original default values. 6.3 Troubleshoot the pump If the vacuum pump does not operate or exhibits any questionable symptoms such as unusual sound or vibration, it may be removed for maintenance to restore it to optimum operation.
  • Page 34 Troubleshooting 5. Use a 1.27 mm or 1.5 mm hex key (Allen) wrench to loosen the set screw in the bracket on top of the pump. Figure 28 Loosening of the set screw Hex key wrench 6. Push the bracket to one side and remove it from the pump (refer to Figure 29).
  • Page 35 Troubleshooting 8. Remove the pump body (refer to Figure 31). Figure 31 Removal of the pump body Pump body 9. Remove the carbon vanes (refer to Figure 32 on page 34 Figure 33 on page and make sure that the rotor turns freely. Figure 32 Removal of carbon vanes Carbon vane Figure 33 After removal of carbon vanes...

  • Page 36: Optimize The Pump

    To optimize the pump: 1. After the assembly of the pump, loosen the set screw plug in the bracket. Connect the set screw plug to the MET ONE 227 particle counter. 2. Turn on power to the MET ONE 227 particle counter.
  • Page 37 Troubleshooting...

  • Page 38: Section 7 Replacement Parts And Accessories

    The probe monitors the relative humidity (10 to 90%) and temperature (5 to 122 °F or -15 to 50 °C). The MET ONE 227 particle counter displays and stores the readings in the internal particle count data record. Refer to section 3.3.5 on page 13...
  • Page 39 Replacement Parts and Accessories PortAll software The PortAll software is used to transfer count data from the buffer of the counter and to display the data on the computer in a spreadsheet format. The software performs calculations as per the FS 209E and ISO 14644 standards. The software includes an adapter for use with a standard 9-pin serial cable.

  • Page 40: Section 8 Service Contact Information

    Service Contact Information U.S.A. customers By Telephone: (541) 472-6500 6:30 a.m. to 5:00 p.m. PST Monday through Friday By Fax: (541) 474-7414 By Mail: Hach Ultra 481 California Avenue Grants Pass, Oregon 97526 Email: TechSupportGP@hachultra.com Website: www.hachultra.com International customers By Telephone:...

  • Page 41: Section 9 Limited Warranty

    If any instrument covered under this warranty proves defective during this period, Hach Ultra will, at its option either repair the defective part without charge for extra parts and labor or provide an equivalent replacement in exchange for the defective product.

  • Page 42: Section 10 Certification

    Section 10 Certification DECLARATION of CONFORMITY Pacific Scientific Instruments 481 California Avenue Grants Pass, Oregon 97526 declare under sole responsibility that the Particle Counter, Model 227, part number 2082611 conforms to Directive 89/336/EEC for Electromagnetic Compatibility and Directive 73/23/EEC for Low Voltage. Compliance was demonstrated to the following specifications as listed in the official Journal of the European Communities: EN 61326:1998, Class A / EN 500081-1:1992 Emissions: EN 55011 :1991 Class A Radiated...
  • Page 43 Certification...

  • Page 44: Appendix A Computer Interface Operations

    Appendix A Computer Interface Operations A.1 Data analysis for ISO 14644 The primary reason for a computer interface with the MET ONE 227 particle counter is to download the count data for analysis. ISO 14644 is the governing standard for clean-rooms. The MET ONE 227 particle ®...
  • Page 45 Eight (8) data bits • One (1) stop bit • No parity Table 4 describes the ASCII commands that are supported by the MET ONE 227 particle counter. Table 4 ASCII commands supported by the counter ASCII command Description "a" Auto: When the "a"...
  • Page 46 A.1.1.2 Data record format Each counter can send a record of the data available. The data record is a string of ASCII characters where the position in the string identifies the meaning of the character. The length of the string changes with the amount of data points available from the counter. Each data point is preceded by a 3-character tag that identifies the type of data that follows in the next six data characters.

  • Page 48: Appendix B Portall Software

    42). This enables the PortAll software to recognize the MET ONE 227 particle counter. After any communication with the computer, the keypad of the MET ONE 227 particle counter is disabled until the power is cycled off and on. Figure 42 MET ONE 227 particle counter connections...
  • Page 49 • The total count data returned from the particle counter must be normalized to counts per unit volume to obtain a correct classification. The PortAll software will automatically normalize (counts x 10) the count data. Refer to the online User's Guide for instructions to set up this feature.

  • Page 50: Appendix C Dpu-414 Printer

    Appendix C DPU-414 Printer C.1 Printer setup The Model DPU-414 printer (refer to Figure 43 on page 49) is an accessory of the MET ONE 227 particle counter. DIP switch settings for the DPU-414 printer are made in the internal firmware of the printer with the use of the front panel buttons of the printer.
  • Page 51 Table 5 DIP switch settings Dip switch 1 (OFF) : Input = Serial (ON) : Printing Speed = High (ON) : Auto Loading = On (ON) : Auto LF = On (ON) : Setting Command = Enable (ON) : Printing (ON) : Density (ON)

  • Page 52: Counter Setup For The Printer

    C.2 Counter setup for the printer Connect the printer cable to the MET ONE 227 particle counter. The printer interface settings are located below the SIO functions menu on the main screen of the MET ONE 227 particle counter because the data is transmitted serially from the MET ONE 227 particle counter in an RS232 format.

  • Page 53: Interpret The Printout

    2. Press to enter the Program mode. 1 (PROG) 3. Press to select the required RS232 mode. 2 (INC) 3 (DEC) 4. Press to return to the main screen. 4 (RET) C.3 Interpret the printout The printer will print the following: •...

  • Page 54: Index

    Index memory buffer, clearance ........21 accessories, included ..........37 automatic mode, operation ........16 Operation ..............47 average mode ............23 operation, PortAll software ........47 operation, theory ............9 battery safety ............. 8 beep mode ............... 26 period and hold times ..........22 power up, operation ..........
  • Page 56 Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after 12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European electrical equipment users must now return old or end-of life equipment to the Producer for disposal at no charge to the user.
  • Page 57 SWEDISH Elektronikutrustning som är märkt med denna symbol kanske inte kan lämnas in på europeiska offentliga sopstationer efter 2005-08-12. Enligt europeiska lokala och nationella föreskrifter (EU-direktiv 2002/96/EC) måste användare av elektronikutrustning i Europa nu återlämna gammal eller utrangerad utrustning till tillverkaren för kassering utan kostnad för användaren.
  • Page 58 Dieses Informationsblatt enthält Angaben, die ausschließlich für den Export dieses Gerätes in die Volksrepublik China erforderlich sind. This document contains information which is only required for the export of this instrument into the People’s Republic of China. Ce document contient les informations nécessaires pour l'exportation d'instruments vers la République Populaire de Chine. 本手册只包含出口到中华人民共和国的･...
  • Page 59 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Trademarks are property of their respective owners. Specifications subject to change without notice.

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