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MMF VM22 Instruction Manual

Vibration
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Instruction Manual
Vibration Meter
VM22
Manfred Weber
Metra Mess- und Frequenztechnik in Radebeul e.K.
Meissner Str. 58 - D-01445 Radebeul
Tel. +49-351 836 2191 Fax +49-351 836 2940
Email:
Info@MMF.de
Internet:
www.MMF.de

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  • Page 1 Instruction Manual Vibration Meter VM22 Manfred Weber Metra Mess- und Frequenztechnik in Radebeul e.K. Meissner Str. 58 - D-01445 Radebeul Tel. +49-351 836 2191 Fax +49-351 836 2940 Email: Info@MMF.de Internet: www.MMF.de...
  • Page 2 Metra Mess- und Frequenztechnik in Radebeul e.K. Meißner Str. 58 D-01445 Radebeul Tel. +49-351-836 2191 +49-351-836 2940 Email Info@MMF.de Internet www.MMF.de Note: The latest version of this manual can be found at http://www.mmf.de/product_literature.htm Specification subject to change. © 2012 Manfred Weber Metra Mess- und Frequenztechnik in Radebeul e.K.

  • Page 3: Table Of Contents

    5.3.2. Mounting the VMID Measurement Point..........10 6. Measurement......................11 6.1. Measurement Value Display.................11 6.2. Measurement Point Detection...............11 6.2.1. Reading the VMID Data with the VM22..........11 6.2.2. Entering the Measurement Point Text...........12 6.2.3. Deleting Measurement Point Data............13 6.3. Saving Measurands..................13 7. Viewing Saved Measurement Data..............14 7.1.
  • Page 4 Figure 1: VM22 with sensor...

  • Page 5: Purpose

    The VM22 measures and records vibration velocity, also known as vibration sever- ity, at a frequency range of 10 to 1000 Hz. The VM22 specification corresponds to the ISO 2954 regulations and is suitable for, among other things, the measurement...

  • Page 6: The Measuring Instrument

    Figure 2: Block Diagram 2 shows the block diagram. The VM22 supplies the IEPE Sensor with 2 mA con- stant current. At the sensor output, a vibration acceleration proportional AC voltage arises, which is amplified in the instrument to produce an optimum level. The gain switch-over takes place automatically.

  • Page 7: The Batteries

    4. The Batteries 4.1. Inserting the Batteries The VM22 is supplied by three alkaline standard cell type AAA (LR03) batteries. NiMH batteries (HR03) may also be used. The minimum energy requirement of the VM22 enables maximum utilization of the batteries.

  • Page 8: Switching On And Off

    Figure 4: Battery Compartment Important: • Always use three batteries of the same type and same date of manufacture. • Remove old batteries from the instrument, and take out the batteries if the instru- ment will not be used for a long period of time. Otherwise leaking battery acid may cause severe damage to the instrument.

  • Page 9: Battery Display And Battery Type

    At this point the battery level indicator is completely empty and the instrument switches itself off automatically. If the VM22 is connected to a USB port, it will be supplied by the USB voltage in order to spare the batteries. In this case, “External” is displayed on the screen in - stead of the battery level indicator.

  • Page 10: Preparation Of Measuring Points

    lected by pressing F1 and the timer duration options of 1, 5, 15 and 60 minutes can be selected, alternatively to deactivate the switch off timer select “none”. The auto- matic switch off timer starts to run after the last press of a button. If a button is pressed then the timer restarts and counts down again according to the duration se- lected.
  • Page 11 The Standard ISO 13373-1 also gives recommendations for measurement points on various machine types. Figure 10: Measuring points on flange Figure 9: Measuring points on vertical bearings bearings Figure 11: Measuring points on electric motors Figure 12: Measuring points on ma- chines with vertical rotors...

  • Page 12: Vmid Measurement Point

    5.3. VMID Measurement Point 5.3.1. How the VMID Measurement Point Functions The VM22 is equipped with an electronic measuring point detector. Metra offers a type measurement point called VMID, which is made of magnetic stainless steel and has an inbuilt memory with an individual serial number (13).

  • Page 13: Measurement

    To improve the vibration transmis- sion the measuring point can be lightly lubricated. As soon as the Sensor base comes into contact with the measurement point, the VM22 displays the measurement point number (Point ID) (15). Figure 15: Newly recognized VMID...

  • Page 14: Entering The Measurement Point Text

    Note: More conveniently, the measurement point texts can also be entered using the available computer software. Once you have assigned the VMID serial number a text, the VM22 will display the text continually upon identification of the measurement point. (17).

  • Page 15: Deleting Measurement Point Data

    In the same way, the entire measurement point data can be deleted as a whole by se - lecting “Erase all Point IDs” in the “ID Menu”. The VM22 memory can store data for a maximum of 1600 measurement points. Note: Deleting measurement point data effects the display of saved measurements.

  • Page 16: Viewing Saved Measurement Data

    To deliver the service staff on site a report about the periodic changes in vibration severity and consequently the previous history of the measurement point concerned, the VM22 provides a graphical trend display. The prerequisite for retrieving graphi- cal trends is placing the sensor on the relevant VMID. The trend display is obtained by pressing the F2 key.

  • Page 17: Viewing Saved Measurement Values

    With F1 you can scroll to the next measurand. The currently displayed measurands can be deleted by pressing OK. Press F2 to exit the menu. The VM22 memory can hold 16000 measurement values. Figure 20: Viewing Saved Measurement Values 7.3. Deleting all Measurement Data Select in the sub-menu “Measurement data memory”...
  • Page 18 In the appendix of part 1, extended in 2009, general zone restrictions for machines which are not separately dealt with in other parts of the standard are specified. 45 mm/s 28 mm/s 18 mm/s 14.7 mm/s Zone 11.2 mm/s 4.5 – 14.7 9.3 mm/s Zone mm/s...
  • Page 19 In part 3 of the ISO 10816, revised in 2009, the zone borders for the vibration veloc- ity of machines with a power of 15 kW to 50 MW are specified (2). Large machines with 300 Medium sized machines kW to 50 MW with 15 to 300 kW Machine type Electric motors with a...

  • Page 20: Setting The Date And Time

    Part 7 of the ISO 10816 deals specifically with rotodynamic pumps (3). Category 1 Category 2 Pumps with high Pumps for general Type safety and reliability and less critical use demands Performance < 200 kW > 200 kW < 200 kW >...

  • Page 21: Calibration

    To exit the menu press OK followed by F2 repeatedly. 10. Calibration The VM22 comes with with a factory calibration, which is traceable to the reference standard of the Physikalisch-Technischen Bundesanstalt (PTB). The calibration is only valid with the supplied vibration transducer. The serial number of the instru- ment and the transducer are stated on the calibration certificate.
  • Page 22 Figure 24: Calibration Figure 25: Calibration Menu The VM22 is now ready for the reference vibration signal. It displays the measured acceleration (24). By using F1 and F2 the displayed value can be increased or de- creased, until it amounts to 10.00 m/s². To save the setting press OK and exit the menu.

  • Page 23: Sensor Check

    ERROR” instead of the measurand. 12. Reset Key If it occurs that the VM22 does not respond to the press of any button, press the re - set key to restart the instrument. The reset key is reached with a thin object through the aperture next to the type label (26).

  • Page 24: Vm2X Measurement Database

    Connect the other end of the cable to a USB port of the computer and switch the VM22 on again. If the instrument is being connected with a particular computer for the first time, a driver installation will be necessary. The driver MMF_VCP.zip can be found on our website: http://mmf.de/software_download.htm...

  • Page 25: Firmware Update

    2. Also download the program “Firmware Updater” from the above named inter- net address and install it on your PC. 3. Connect the VM22 to the PC using the USB cable and switch it on so that Win- dows detects it as USB device.
  • Page 26 The transfer progress is displayed as a time bar on the PC and also on the VM22. When the update is finished the VM22 will start up and the “Firmware Updater” will close. Please do not interrupt the update process. Fol- lowing transfer failures the update can be restarted at point 3.

  • Page 27: Technical Data

    14. Technical Data Displayed measurand true RMS of the vibration velocity Measuring range 0.1 – 1000 mm/s for specified measurement accuracy Display resolution 0.1 mm/s Measurement accuracy ± 5 % ± 2 digits Frequency range 10 – 1000 Hz, 3 order Butterworth filter Overload indication at >...
  • Page 28 Coding 16 digit unique hexadecimal number Measuring point ID mem- 1600 measuring points with serial number and text ory (VM22) Mounting the VMID Mount with two part adhesive, e.g. LOCTITE Hysol 3430 or 3450 Maximum temperature 80 °C...

  • Page 29: Limited Warranty

    The repaired or replaced product will be sent back at Metra’s expense. Declaration of Conformity According to EMC Directive 2014/30/EC Product: Vibration Meter Type: VM22 (from Ser. no. 160000) It is hereby certified that the above mentioned product complies with the demands pursuant to the following standards: DIN EN 61326-1: 2013...

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