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Surtronic 25

User’s Guide

K505/125-01 Issue 4

Taylor Hobson Ltd

PO Box 36, 2 New Star Road, Thurmaston, Leicester

LE4 9JQ, England

Tel44 (0)116 2763 771, Fax +44(0)116 274 1350

E-mail: [email protected]

www.taylor-hobson.com

Summary of Contents for Surtronic 25

Page 1: ...r s Guide K505 125 01 Issue 4 Taylor Hobson Ltd POBox 36 2 New Star Road Thurmaston Leicester LE49JQ England Telephone 44 0 116 2763 771 Fax 44 0 116 274 1350 E mail taylor hobson uk ametek com www ta...

Page 2: ......

Page 3: ...logy and definitions 1 1 Surface Texture Definitions 1 1 Parameter Definitions 1 3 Ra 1 3 Rp 1 3 RSm 1 3 Rz 1 3 Rz1max 1 3 Rt 1 4 Rmr 1 4 RPc 1 4 Rsk 1 4 Rda 1 5 Chapter 2 Description 2 1 The Equipmen...

Page 4: ...Getting Started 3 1 Battery 3 1 Connecting the Pick up 3 1 Making a measurement 3 2 Switching the Surtronic 25 ON 3 2 To cancel a measurement 3 4 Using the Surtronic 25 with a PC 3 4 Printing 3 4 To...

Page 5: ...PC 4 5 SPC Mode 4 5 Language Settings 4 6 Chapter 5 Making Measurements Technical Considerations 5 1 Operating Notes 5 1 On a horizontal surface 5 1 On other surfaces 5 2 Cut off 5 2 Evaluation Length...

Page 6: ...6 1 Small Bore Pick up 112 2673 6 1 Narrow Gauge Stylus 155 P11610 6 2 Right Angle Pick up 5mm 200min stylus tip radius 112 1505 6 2 Recess pick up 5mm 200min stylus tip radius 112 1506 6 3 Recess pic...

Page 7: ...6 8 Replica Kit 112 727 6 9 Portable base 137 1734 6 10 Chapter 7 Maintenance 7 1 Calibration 7 1 Reference Standard 7 1 Sensitivity Check and Adjustment 7 1 Pick up with Chisel Edge Stylus 7 2 Clean...

Page 8: ...Surtronic S25 Page vi...

Page 9: ...ers can be separated into three basic types Amplitude Spacing and Hybrid Amplitude Parameters are measures of the vertical characteristics of the surface deviations Spacing Parameters are measures of...

Page 10: ...lengths For the primary profiles the evaluation length is equal to the sample length Note almost all parameters are defined over one sample length however in practice more than one sample length is as...

Page 11: ...mean value of the individual Rp values for each sample RSm RSm is the mean spacing between profile peaks at the mean line measured within the sampling length A profile peak is the highest point of th...

Page 12: ...through a selectable band centred about the mean line or a line parallel to it The count is determined only over the evaluation length though the results are given in peaks per cm or per inch Known a...

Page 13: ...Surtronic S25 Further details are included in the Taylor Hobson booklet A Guide to Surface Texture Parameters Page 1 5...

Page 14: ...Surtronic S25 Page 1 6...

Page 15: ...parameters evaluated by this instrument is given in Chapter 1 and in the publication A Guide to Surface Texture Parameters The parameter evaluations and other functions of the instrument are micropro...

Page 16: ...items described in this handbook are optional and may not form part of your particular system Traverse Unit The top panel of the traverse unit carries a membrane type control panel and a liquid crysta...

Page 17: ...always starts from the extreme outward position At the end of the measurement the pickup returns to this position ready for the next measurement The traverse length is determined from selections of c...

Page 18: ...3 it can be turned to angle the pick up or to take it off the centre line as shown in figure 3a It can also be mounted sideways on the drive shaft when the right angle pick up is in use Figure 3 pick...

Page 19: ...up holder This fits into the crutch of the pick up support and is held in place by a spring plunger A biased holder when used as shown in figure 3 exerts a biasing force on the pick up depending on w...

Page 20: ...e unit first and then the pick up To connect the pick up to the display traverse unit the pick up has 2 threaded ends with location pins Insert the location pin securely into the Surtronic body and ti...

Page 21: ...han the roughness spacing This enables it to ride across the surface almost unaffected by the roughness and provide a datum representing the general form of the surface Even so where the waviness is w...

Page 22: ...iven in the Accessories section of this handbook They differ only in the stylus tip radius the dimensions of the housing or position and the shape of the skid The stylus material in all the pickups is...

Page 23: ...or in a large bore unscrew the three feet and use them to fasten an optional roll and bore plate to the bottom of the unit make sure that the feet are correctly located within the holes of the plate...

Page 24: ...Surtronic S25 Page 2 10...

Page 25: ...rough the slot in the holder It is advisable to connect the lead to the display traverse unit first and then the pick up To connect the pick up to the display traverse unit the pick up has 2 threaded...

Page 26: ...ernal vibration see also operating notes in Chapter 5 Switching the Surtronic 25 ON Pressing the SCROLL key brings the display on and the previously selected set up is displayed provided power has bee...

Page 27: ...tings this can be car ried out using the Scroll and Select keys see Chapter 4 for more detail Press the MEASURE button When the measurement is com pleted the pickup returns and the results are display...

Page 28: ...surement data the message Data Dumping is displayed When the data dump is completed the dump menu still remains active From the displayed menu values of evaluation length and range can be changed and...

Page 29: ...ncel print Pressing the PRINT key during printout before display has updated to Main menu state stops the printout and Printer cancelled is displayed for 2 seconds The normal update to Main state then...

Page 30: ...Surtronic S25 Page 3 6...

Page 31: ...H PARAMETERS RANGE PRINT SETTINGS UNITS FILTER DUMP MODE The Scroll key is used to cycle through these options and the Select key is used to confirm the set up screen required For a chart of default s...

Page 32: ...will appear on the screen see below Press the Scroll key left to right across the columns then press the Select key for each parameter required multiple selections can be made The Select key is also...

Page 33: ...mal digits of the percentage then the sign and 3 decimal digits of the offset and then to OK Pressing SELECT will change the sign digit keep pressing SELECT until the required figure is reached Pressi...

Page 34: ...m 0 01 m 0 1 m Rp 0 01 m 0 1 m 1 0 m Rz 0 01 m 0 1 m 1 0 m Rz1max 0 01 m 0 1 m 1 0 m Rt 0 01 m 0 1 m 1 0 m Rmr 0 1 0 1 0 1 RPc 1 decimal point 1 decimal point 1 decimal point Rsk 0 001 m 0 001 m 0 00...

Page 35: ...u options will be available EVALUATION LENGTH RANGE UNITS FILTER DUMP MODE All other settings are carried out via the PC SPC Mode If SPC is required this can be switched on by pressing the PRINT AND S...

Page 36: ...Language Settings The default on the Surtronic 25 is English Language If the user wishes to select other languages press the PRINT AND SCROLL buttons down simultaneously The following warning screen...

Page 37: ...ct Language Select SPCmode Quit Scroll down the options with and click to select Select Language English Fran ais Deutsch Italiano OK Scroll down the list of languages with and click to select This se...

Page 38: ...Surtronic S25 Page 4 8...

Page 39: ...verse unit so that the traverse is made parallel to the surface being measured 4 After a measurement the traverse unit can be removed from the surface as soon as the pick up completes its return strok...

Page 40: ...the cause correct it and repeat the measurement On other surfaces On a cylindrical surface fit the optional roll and bore plate On a vertical surface If necessary hold the display traverse unit by han...

Page 41: ...the following should be used to determine the cut off c ISO4288 1996 Recommended Cut off ISO 4288 1996 Periodic Profiles Non periodic Profiles Cut offs Sampling Length Evaluation Length Spacing Distan...

Page 42: ...n front of a measured value due to excessive slew rate for a single data point large spike May also occur if the pick up is lifted off the surface Data transmit error Printer connected at start of tra...

Page 43: ...essing PRINT key when printer not connected connected or no computer connected to receive dump data Printing pressing PRINT key during data transmission to cancelled printer stop printing Message disp...

Page 44: ...i cad only 110 240V THP No 112 1591 50 60Hz Traverse Speed 1mm sec Measurement metric inch units Cut off values 0 25mm 0 8mm and 2 5mm 0 01in 0 03in and 0 1in Traverse lengths 0 25 25mm 0 05 0 98in Di...

Page 45: ...instrument 5V logic When connected to Ground constant power is on RS232 Output Printer Configuration Is SPC is on then Baud rate 4800 Baud Parity Even Data bit length 7 bits Printer head disabled If S...

Page 46: ...ing format is used for data dump from Surtronic 25 to a PC Transmission set up is as follows Baud rate 9600 Baud Number of data bits 8 Start bit 1 Stop bit 1 Parity None Resolution Horizontal Vertical...

Page 47: ...spacing Number of data values per mm 1 byte First data value Resolution 10nm 1 byte Diff data value Difference between this and the previous data value 80 Stop byte 2 stop bytes are sent 80 Stop byte...

Page 48: ...Surtronic S25 Page 5 10...

Page 49: ...mall bores on narrow surfaces and in grooves or with the skid supported independently of the surface being measured On this pick up the skid is integral with the stylus arm housing and is set further...

Page 50: ...is set at right angles to its normal position Figure 10 The right angle pickup It is particular useful in grooves or slots where the lay of the surface texture makes it unsuitable for measurement wit...

Page 51: ...piece Recess pick up 5 m 200 in stylus tip radius 112 1506 This pick up has an extended stylus and skid for measuring at the bottom of a recess or between shoulders and flanges up to 5 7mm deep A spec...

Page 52: ...ius Chisel edge pick up 112 1524 For measuring along a sharp edge or a wire which cannot be traversed with a normal stylus The pick up has a rotatable square skid Not for use on flat surfaces Figure 1...

Page 53: ...cular to the surface when the pick up is viewed from the end This is particularly necessary when the pick up is used on a concave surface such as a bore but owing to the form of the skid this conditio...

Page 54: ...an be clamped to the pick up body to enable the Datum Support Stand to be used with the standard recess right angle and chisel edge stylus pick ups The normal skid should be removed by undoing the sma...

Page 55: ...the traverse unit and remove the pick up from the traverse unit carriage 2 Remove the lead from the pick up 3 Carefully locate the central pin of the extension rod with the hole in the pick up and scr...

Page 56: ...nter comprises 1 portable printer 112 3469 01 1 paper roll 112 1527 1 interconnecting cable 112 3471 01 1 charger part of 112 3469 01 The connector is a 9 way D type socket The interfacing cable for t...

Page 57: ...ructions are included with the kit but briefly the procedure is as follows An area not exceeding 400mm is enclosed by a thin wall of the plasticine provided The solution is then poured onto the area a...

Page 58: ...Surtronic S25 Page 6 10...

Page 59: ...and adjusting the pick up sensitivity is as follows for the chisel edge stylus type see the note at the end of this section 1 Place the reference specimen on a flat surface and set up the instrument t...

Page 60: ...moistened with a proprietary cleaning agent Pick up Skid To reduce the effect of wear on pick ups with a rotatable skid occasionally turn the skid round to present a new contact surface The skid is c...

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