Clavis Type 7 User Manual

Belt frequency meter

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

CLAVIS Belt Frequency

Meter Type 7

User Manual

Table of Contents

Need help?

Do you have a question about the Type 7 and is the answer not in the manual?

Questions and answers

Summary of Contents for Clavis Type 7

Page 1 CLAVIS Belt Frequency Meter Type 7 User Manual...
Page 2 General safety tips Safety ﬁ rst – read and understand this manual before operating the CLAVIS Belt Frequency Meter. Never use your CLAVIS Belt Frequency Meter on moving belts. Switch off and isolate any Do not leave the unit in...
Page 3: Table Of Contents
Table of contents page 1.0 Device description 2.0 Quick start 3.0 Functions 3.1 Keys 3.2 Audio/ visual display 3.3 Optical sensor 3.4 Acoustic Sensor 3.5 Battery condition 3.6 Charging batteries 3.7 RS232C serial communication 4.0 Setup & use 5.0 Operating tips 6.0 Meter range 7.0 Calibration 7.1 Spot check...
Page 4: Device Description
Two differing types of sensor are used with the CLAVIS meter. The ﬁ rst is the acoutic sensor which is available in a range of sizes and proﬁ les. The second is an optical sen- sor which uses an infrared beam to detect the vibration of a belt strand and sends a signal to the meter.
Page 5: Quick Start
2.0 Quick start 5. Read belt frequency (Hz) 2. Press to switch meter on 3. Aim sensor at belt, gap 5 to 25 mm 4. Tap or pluck belt 1. Plug in sensor 3. Hold sen- sor across 5. Read belt the belt.
Page 6: Functions
3.0 Functions 3.1 Keys This key switches the meter on or off. If the meter is on and sits idle ON/OFF for more than 3 minutes, it automatically switches off to preserve bat- tery life. When the meter is ﬁ rst switched on a battery check is made see Section 3.4 for a description This key is used to enter the belt span length.
Page 7: Audio/Visual Display
3.2 Audio/visual display The CLAVIS Belt Frequency Meter is an interactive tool. It provides both visual and audible communication with the operator. Each signal or combination of signals has a meaning. While all these signals are discussed in other sections of this manual, a compilation of all the available signals will be presented here.
Page 8: Optical Sensor
Solvents are never to be used. 3.4 Acoustic sensor The acoustic sensor uses a CLAVIS patented technique for detecting the belt vibration signal whilst minimising ambient noise. The acoustic sensor is particularly suitable for belts which vibrate poorly or where the amplitude of belt vibration is very small.
Page 9: Battery Condition
3.5 Battery condition When the CLAVIS Belt Frequency Meter is ﬁ rst switched on, a battery condi- tion check is automatically performed. A low battery condition is signalled both visually and audibly. The display window will ﬂ ash an array of zeros, starting with four and progressing to only one.
Page 10: Charging Batteries
Do not charge batteries with the sensor head attached to the meter. Do not attempt to use the meter while batteries are being charged. The CLAVIS Belt Frequency Meter is compatible with rechargeable batteries and charging unit. A convenient 3,5 mm, positive centre charging socket is located on the bottom end of the meter body adjacent to the sensor cable plug-in port.
Page 11: Setup & Use
4.0 Setup and use 1. Plug sensor head into meter body. This is a keyed plug. Line it up, do not use force! 2. Turn unit on using ON/OFF 3. Load span and mass data or recall previously loaded data. SPAN To load span data simply hold down while using...
Page 12 To recall stored span and mass data simply press MEM 1 MEM 3 MEM 2 Depending upon where you stored the data for this speciﬁ c drive. 4. Aim sensor at centre of selected belt span. Tap or pluck the belt. The meter will beep once to indicate that a measurement was taken.
Page 13: Operating Tips
5.0 Operating tips Here are some procedures and “best” practices that may ease use or help increase the reliability of your belt tensioning efforts. Take your tension reading as close to the centre of the selected span as practical. Use the longest belt span that can be readily accessed. Minimum useable span length is equal to 20 times the belt tooth pitch for synchronous belts and 30 times the belt top width for “v”...
Page 14: Meter Range
If everything looks correct then this drive is simply beyond the capacity of the CLAVIS Belt Frequency Meter. The drive will have to be tensioned by traditional force and deﬂ ection techniques.
Page 15: Calibration
7.0 Calibration 7.1 Spot check The measurement system of the CLAVIS Belt Frequency Meter is based upon a very stable quartz crystal that should never wander. However, a precision mechanical resonator (tuning fork) is included with the meter so that a calibration check at a spot frequency of 250 Hz may be performed at any time.
Page 16: Annual Certifi Cation
7.2 Annual certiﬁ cation Technical support relating to calibration certiﬁ cation and/or operation of the CLAVIS Belt Frequency Meter can be obtained from the manufacturer at: techsupport@clavis.co.uk phone: +44 191 262 7869 fax: +44 191 262 0091 The meter may be returned to the manufacturer for repair or recalibration at any time.
Page 17: Technical Specifi Cation
8.0 Technical speciﬁ cation Measurement range Frequency range ........10 to 600 Hz Measurement accuracy Below 100 Hz....... ± 1 signiﬁ cant digit Above 100 Hz........ ± 1% Belt mass input range ......0,001 to 9,990 kg/m Belt span input range ......0,001 to 9,99 m Maximum belt tension display ....
Page 18: Useful Formulae And Conversions
9.0 Formulae and conversions Force conversion constants newton x 0,2248 = lb pound x 4,4482 = N kilogram x 9,8067 = N Length conversion constants inch x 0,0254 = m metre x 39,3701 = in mm x 0,001 = m Span length calculation (D - d) where:...
Page 19: Appendix
= span length (m) f = vibration frequency (Hz) The CLAVIS Belt Frequency Meter is a dual function tool. The optical sensing head uses an invisible infrared beam to detect vibration. The acoustic sensing head uses the almost inaudible acoustic signal from the belt to detect vibration.
Page 20: Limited Warranty
CLAVIS Belt Frequency Meter in respect to which such cause arise, and in no event shall IDS be liable for special, incidental, consequential, exemplary, or punitive damages resulting from any such cause.
Page 21: Weights And Tension Values
3.0 Weights and tension values The following tables are suggested tension values for power transmission belts manufactured by SKF (SKF is a registered trademark of the SKF Group). ® Timing belts Belt type Belt type Belt Tension Mass New belt Run in belt kg/m HiTD...
Page 22 Wrapped V, wedge and banded belts Belt Smallest pulley Speed range Belt tension per Mass type diameter single belt* New belt Run in Single belt Belt in a over incl. over incl. belt band** kg/m 1 000 2 500 0,0598 2 500 4 000 60 over...
Page 23 Wrapped V, wedge and banded belts Belt Smallest pulley Speed range Belt tension per Mass type diameter single belt* New belt Run in Single belt Belt in a over incl. over incl. belt band** kg/m 1 740 2 026 1 350 0,3804 0,4398 1 740 3 000...
Page 24 Cogged raw edge V, wedge and banded belts Belt Smallest pulley Speed range Belt tension per Mass type diameter single belt* New belt Run in Single belt Belt in a over incl. over incl. belt band** kg/m 2 500 0,1804 0,2250 2 500 4 000...
Page 25 Cogged raw edge V, wedge and banded belts Belt Smallest pulley Speed range Belt tension per Mass type diameter single belt* New belt Run in Single belt Belt in a over incl. over incl belt band** kg/m 1 000 2 500 0,1830 0,2520 2 500...
Page 26 Integrated Display Systems Limited, Maurice Road, Wallsend, Tyne and Wear, NE28 6BY, United Kingdom © Integrated Display Systems Limited. The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage...