Renishaw RMP600 User manual

RMP600 high-accuracy radio machine
probe
Installation guide
H-5312-8503-08-B

© 2008–2022 Renishaw plc. All rights reserved.
This document may not be copied or reproduced in whole or in part, or transferred to any other media
or language, by any means, without the prior written permission of Renishaw.
Renishaw plc. Registered in England and Wales. Company no: 1106260. Registered office: New Mills,
Wotton-under-Edge, Gloucestershire, GL12 8JR, UK.
Renishaw part no: H-5312-8503-08-B
First issued: 01.2008
Revised: 08.2022
Compliance information for this product is available by scanning the QR code or visiting
www.renishaw.com/mtpdoc

i
Contents
Before you begin .............................................................1.1
Disclaimer .................................................................1.1
Trade marks................................................................1.1
Warranty ..................................................................1.1
Changes to equipment .......................................................1.1
CNC machines .............................................................1.2
Care of the probe ...........................................................1.2
Patents ...................................................................1.2
Microchip software licensing agreement ..........................................1.3
Intended use ...............................................................1.4
Safety ....................................................................1.4
RMP600 basics ...............................................................2.1
Introduction ................................................................2.1
Getting started ...........................................................2.2
System interface..........................................................2.2
Trigger Logic™ ...........................................................2.2
Probe modes...............................................................2.3
Configurable settings.........................................................2.3
Switch-on / switch-off methods...............................................2.3
Enhanced trigger filter .....................................................2.5
Auto-reset function ........................................................2.5
Multiple probe mode.......................................................2.5
Acquisition mode .........................................................2.6
RMP600 dimensions .........................................................2.7
RMP600 specification ........................................................2.8
Typical battery life.........................................................2.9
Recommended styli.........................................................2.10

RMP600 installation guide
ii
Contents
System installation ...........................................................3.1
Installing the RMP600 with an RMI or RMI-Q ......................................3.1
Operating envelope .......................................................3.1
Positioning the RMP600 and RMI or RMI-Q ....................................3.2
Performance envelope .....................................................3.2
Preparing the RMP600 for use .................................................3.3
Fitting the stylus ..........................................................3.3
Installing the batteries .....................................................3.4
Mounting the probe on a shank ..............................................3.5
Stylus on-centre adjustment.................................................3.6
Calibrating the RMP600 ......................................................3.7
Why calibrate a probe? ....................................................3.7
Calibrating in a bored hole or on a turned diameter...............................3.7
Calibrating in a ring gauge or on a datum sphere ................................3.8
Calibrating the probe length .................................................3.8
Trigger Logic™ ...............................................................4.1
Reviewing the probe settings ..................................................4.1
Multiple probe mode settings ..................................................4.2
Probe settings record ........................................................4.3
Changing the probe settings ...................................................4.4
RMP600 – RMI partnership....................................................4.6
RMP600 – RMI-Q partnership..................................................4.7
Operating mode.............................................................4.8
Maintenance .................................................................5.1
Maintenance ...............................................................5.1
Cleaning the probe ..........................................................5.1
Changing the batteries .......................................................5.2
Diaphragm replacement ......................................................5.4
Fault-finding .................................................................6.1
Parts list .....................................................................7.1

1.1
Before you begin
see Section 1, “Before you begin”
Disclaimer
WHILE CONSIDERABLE EFFORT WAS MADE TO VERIFY THE ACCURACY OF THIS DOCUMENT
AT PUBLICATION, ALL WARRANTIES, CONDITIONS, REPRESENTATIONS AND LIABILITY,
HOWSOEVER ARISING, ARE EXCLUDED TO THE EXTENT PERMITTED BY LAW.
RENISHAW RESERVES THE RIGHT TO MAKE CHANGES TO THIS DOCUMENT AND TO THE
EQUIPMENT, AND/OR SOFTWARE AND THE SPECIFICATION DESCRIBED HEREIN WITHOUT
OBLIGATION TO PROVIDE NOTICE OF SUCH CHANGES.
Trade marks
RENISHAW® and the probe symbol are registered trade marks of Renishaw plc. Renishaw
product names, designations and the mark ‘apply innovation’ are trade marks of Renishaw plc or its
subsidiaries.
Google Play and the Google Play logo are trademarks of Google LLC.
Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries.
AppStore is a service mark of Apple Inc.,registered in the U.S. and other countries.
Other brand, product or company names are trade marks of their respective owners.
Warranty
Unless you and Renishaw have agreed and signed a separate written agreement, the equipment
and/or software are sold subject to the Renishaw Standard Terms and Conditions supplied with such
equipment and/or software, or available on request from your local Renishaw office.
Renishaw warrants its equipment and software for a limited period (as set out in the Standard Terms
and Conditions), provided that they are installed and used exactly as defined in associated Renishaw
documentation. You should consult these Standard Terms and Conditions to find out the full details of
your warranty.
Equipment and/or software purchased by you from a third-party supplier is subject to separate terms
and conditions supplied with such equipment and/or software. You should contact your third-party
supplier for details.
Changes to equipment
Renishaw reserves the right to change equipment specifications without notice.

RMP600 installation guide
1.2
Before you begin
CN 100416216
CN 100466003
CN 101142461
CN 101171493
CN 101198836
CN 101476859
CN 101482402
CN 111133272
EP 1425550
EP 1457786
EP 1576560
EP 1613921
EP 1804020
EP 1866602
EP 1880163
EP 1893937
EP 1931936
EP 2154471
EP 2216761
EP 3688405
IN 215787
IN 234921
IN 305341
IN 307453
IN 364693
IN 8707/DELNP/2008
WO 2004/057552
JP 2020-535419
JP 4237051
JP 4575781
JP 4852411
JP 5238749
JP 5283501
JP 5308811
JP 5357541
JP 5390719
JP 5611297
KR 1001244
TW I333052
US 2020-0191564
US 6941671
US 7285935
US 7316077
US 7486195
US 7603789
US 7665219
US 7689379
US 7792654
US 7821420
US 8140287
US 9140547
WO 2019/063991
CNC machines
CNC machine tools must always be operated by fully trained personnel in accordance with the
manufacturer’s instructions.
Care of the probe
Keep system components clean and treat the probe as a precision tool.
Patents
Features of the RMP600, and other similar Renishaw products, are the subject of one or more of the
following patents and/or patent applications:

1.3
Before you begin
Microchip software licensing agreement
This product’s firmware has been developed by Renishaw with the use of the Microchip libraries, under
the following licensing terms:-
This software is developed by Microchip Technology Inc. and its subsidiaries (“Microchip”).
Redistribution and use in source and binary forms, with or without modification, are permitted provided
that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and
the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Microchip’s name may not be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY MICROCHIP “AS IS” AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
MICROCHIP BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
OR CONSEQUENTIAL DAMAGES (INCLUDING BUT NOT LIMITED TO PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA OR PROFITS; OR BUSINESS
INTERRUPTION) HOWSOEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
(c) Copyright 1999-2013 Microchip Technology. All rights reserved.

RMP600 installation guide
1.4
Before you begin
Intended use
The RMP600 is a radio spindle probe that enables automated workpiece inspection and job set-up on
multi-tasking machines, machining centres and gantry machining centres.
Safety
Information to the user
This product is supplied with non-rechargeable batteries that do not contain lithium. For specific battery
operating, safety and disposal guidelines refer to the battery manufacturers’ literature.
• Do not attempt to recharge the batteries.
• Replace the batteries only with the specified type.
• Do not mix new and used batteries in the product.
• Do not mix different types or brands of batteries in the product.
• Ensure that all batteries are inserted with the correct polarity in accordance with the instructions in
this manual and indicated on the product.
• Do not store the batteries in direct sunlight.
• Do not expose the batteries to water.
• Do not expose the batteries to heat or dispose of batteries in a fire.
• Avoid forced discharge of the batteries.
• Do not short circuit the batteries.
• Do not disassemble, apply excessive pressure, pierce, deform or subject the batteries to impact
• Do not swallow the batteries.
• Keep the batteries out of the reach of children.
• If the batteries are swollen or damaged do not use them in the product and exercise caution when
handling them.
• Dispose of waste batteries in accordance with your local environmental and safety laws.
Ensure that you comply with international and national battery transport regulations when transporting
batteries or this product with the batteries inserted. To reduce the risk of shipment delays, should you need
to return this product to Renishaw for any reason, do not return any batteries.
Information to the machine supplier/installer
It is the machine supplier’s responsibility to ensure that the user is made aware of any hazards
involved in operation, including those mentioned in Renishaw product literature, and to ensure that
adequate guards and safety interlocks are provided.
If the probe fails, the probe signal may falsely indicate a probe seated condition. Do not rely on probe
signals to halt the movement of the machine.

1.5
Before you begin
Information to the equipment installer
All Renishaw equipment is designed to comply with the relevant EU and FCC regulatory requirements.
It is the responsibility of the equipment installer to ensure that the following guidelines are adhered to,
in order for the product to function in accordance with these regulations:
• any interface MUST be installed in a position away from any potential sources of electrical noise,
(for example power transformers, servo drives):
• all 0V/ground connections should be connected to the machine “star point” (the “star point” is a
single point return for all equipment ground and screen cables).This is very important and failure to
adhere to this can cause a potential difference between grounds;
• all screens must be connected as outlined in the user instructions;
• cables must not be routed alongside high current sources (for example, motor power supply
cables), or be near high-speed data lines;
• cable lengths should always be kept to a minimum.
Equipment operation
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired.

RMP600 installation guide
1.6
Before you begin
This page is intentionally left blank.

2.1
RMP600 basics
Introduction
The RMP600 probe offers an unrivalled combination of size, accuracy, reliability and robustness and,
for the first time, allows high-accuracy probing on large machining centres or other machines where
line-of-sight problems affect optical signal transmission.
Successfully combining patented RENGAGE™ strain gauge technology with the patented frequency
hopping radio transmission system of the RMP60, the RMP600 provides existing probe users with a
simple upgrade to solid-state strain gauge technology and all the associated benefits this brings:
• excellent 3D performance to allow probing of contoured surfaces;
• improved repeatability in all probing directions;
• a low triggering force combined with low pre-travel variation to provide high-accuracy, even when
used with long styli;
• a proven ten-fold improvement in life (10 million triggers);
• the elimination of reseat failures;
• high resistance to machine tool vibration;
• resistance to shock and false triggering through the use of solid state accelerometers.
In addition to providing high-accuracy measurement on your machine tool, the RMP600 also offers:
• Faster calibration:
On complex 3D parts, it is common to measure in several different directions. Each direction
of a standard mechanical probe must be calibrated, to ensure that the pre-travel variation is
compensated in the measurement. Performing this calibration for every 3D direction can be
time-consuming.
The RMP600 has almost no pre-travel variation, so a single calibration value may be used for any
probing angle in 2D or 3D. This results in a vastly reduced calibration time. An additional benefit is a
corresponding reduction in errors introduced by environmental changes within the machine during
a long calibration cycle.
• The ability to be used in applications where axial and radial reorientations are used, enabled by the
use of solid state accelerometers:
The auto-reset function is required and recommendations should be followed for optimum
metrology performance.
see Section 2, “RMP60 basics”

RMP600 installation guide
2.2
RMP600 basics
Getting started
Three multicolour probe LEDs provide visual indication of selected probe settings.
For example:
• Switch-on and switch-off methods
• Probe status – triggered or seated
• Battery condition
Batteries are inserted or removed as shown (for more information, see page 3.4, “Installing the
batteries”).
On insertion of batteries, the LEDs will begin to flash (for more information, see page 4.1, “Reviewing
the probe settings”).
System interface
The radio machine interface (RMI-Q) is an integrated interface/receiver used to communicate between
the RMP600 probe and the machine controller. For more details, refer to the RMI-Q radio machine
interface installation guide (Renishaw part no. H-5687-8504).
RMP600 is also compatible with the older radio machine interface (RMI) integrated interface/receiver.
For more details, refer to the RMI radio machine interface installation guide (Renishaw part no.
H-4113-8554).
Trigger Logic™
Trigger Logic™ (for more information, see page 4.1 “Reviewing the probe settings”) is a method that
allows the user to view and select all available mode settings in order to customise a probe to suit
a specific application. Trigger Logic is activated by battery insertion and uses a sequence of stylus
deflections (triggering) to systematically lead the user through the available choices to allow selection
of the required mode options.
A Probe Setup app is available that simplifies this process with clear, interactive instructions and
informative videos and is available for download on the following app stores.
or
Current probe settings can also be reviewed by simply removing the batteries for a minimum of
5 seconds, and then replacing them to activate the Trigger Logic review sequence.

2.3
RMP600 basics
Probe modes
The RMP600 probe can be in one of three modes:
Standby mode –Probe is waiting for a switch-on signal.
NOTE: The RMP600 will enter “hibernation mode” should the system interface be powered off or out
of range for a period of 30 seconds (“hibernation mode” is only applicable to “radio on mode”).
Operational mode –When activated by one of the switch-on methods, the probe is switched on and
ready for use.
Configuration mode – Ready to change the probe settings using Trigger Logic.
Configurable settings
Switch-on / switch-off methods
The following switch-on / switch-off options are user-configurable.
• Radio on / Radio off
• Radio on / Timer off
• Spin on / Spin off
• Spin on / Timer off
• Shank switch on / Shank switch off

RMP600 installation guide
2.4
RMP600 basics
RMP600 switch-on method
Switch-on options are configurable
RMP600 switch-off method
Switch-off options are configurable
Probe ready time
Radio on
Radio switch on is commanded by
machine input.
Radio off
Radio switch off is commanded by
machine input. A timer automatically
switches the probe off 90 minutes
after the last trigger or reseat if it is
not turned off by machine input.
Timer off (timeout)
Timeout will occur 12, 33 or 134
seconds (user configurable) after the
last probe trigger or reseat.
1.7 seconds
maximum.
Spin on
Spin at 500 r/min for 1 second
minimum.
Spin off
Spin at 500 r/min for 1 second
minimum. A timer automatically
switches the probe off 90 minutes
after the last trigger if it is not spun.
Timer off (timeout)
Timeout will occur 12, 33 or 134
seconds (user configurable) after the
last probe trigger or reseat.
2.5 seconds
minimum. (The probe
must be stationary for
2.5 seconds minimum
after it has stopped
spinning.)
Shank switch on Shank switch off 3 seconds maximum.
NOTES:
In “radio on mode”, the switch-on time is user selectable “fast” or “standard” when using RMI-Q
(selection is made in RMI-Q). Otherwise, the switch-on time 1.7seconds.
For more information on the user selectable switch-on time when operating with RMI-Q, refer to the
RMI-Q installation guide (Renishaw part no. H-5687-8504).
In “radio on mode”, the switch-on time assumes a good radio communication link. In a poor radio
frequency (RF) environment this may rise to a maximum of 3seconds.
In “spin on mode”, the 1 second starts from the moment the spindle reaches 500 r/min.
The RMP600 must be on for a minimum of 1second before being switched off.

2.5
RMP600 basics
Enhanced trigger filter
Probes subjected to high levels of vibration or shock loads may output signals without having
contacted any surface. The enhanced trigger filter improves the probe’s resistance to these effects.
When the filter is enabled, a constant 8 ms or 16 ms delay is introduced to the probe’s output. The
factory setting is 8 ms. If false triggering is noticed, then consider increasing the filter delay to 16 ms.
Auto-reset function
In previous strain gauge products, the probe was required to be turned off during reorientation moves.
The auto-reset function in the RMP600 can compensate for stylus forces, resulting from changes in
probe orientation, that can cause the probe to trigger.
This feature is controlled by solid state accelerometers and is suitable for applications where axial and
radial reorientation of the probe is applied.
To achieve optimum metrology performance when the auto-reset function is turned on, a dwell is
recommended before making a programmed move that follows any reorientation of the probe.
When using a stylus of up to 150 mm long, a 0.2second dwell is necessary. In most applications the
machine response time will adequately provide this.
When using a 200 mm long stylus or heavy stylus configurations, a 1 second dwell is required. This will
necessitate edits to the machine probing programme.
When in “auto-reset mode”, the probe will not trigger when moved below a speed of 3 mm/min.
NOTE: Speeds below 3 mm/min commonly occur when manually moving the probe using the
handwheel with a very ne feedrate.
Multiple probe mode
The RMP600 can be configured, using Trigger Logic, to allow multiple radio probes in “spin on / spin
off” or “shank on / shank off” to be used with a single RMI or RMI-Q.
Up to four RMP600s can be used with a single RMI-Q in “radio on / radio off mode”. For further
details of this functionality, refer to the RMI-Q radio machine interface installation guide (Renishaw part
no. H-5687-8504).
NOTES:
“Multiple probe mode” is a function of the RMP600. As such, the option will not appear when the
“radio on mode” has been selected.
RMP600 probes which are set to “multiple probe on mode” can coexist alongside any number of
RMP600 probes set to “multiple probe off mode”.

RMP600 installation guide
2.6
RMP600 basics
To allow multiple radio probes to work in close proximity, and with a single RMI or RMI-Q, 16choices
of “mode on” colours are available, each representing a different machine tool installation. (for more
information, see page 4.2, “Multiple probe mode settings”).
All probes operating with a single RMI or RMI-Q must be set to the same “mode on” colour choice;
any multiple probes located on adjacent machines must all be set to an alternative “mode on” colour
choice.
NOTE: Each probe per “mode on” colour choice must be partnered with the RMI or RMI-Q. By
conguring multiple probes to a single “mode on” colour choice, all probes using this “mode on”
colour choice will have the same identity.
The probe is partnered after selecting the “multiple probe mode setting” and choosing the “mode
on” option. (for more information, see page 4.4, “Changing the probe settings”).
There is no limit to the number of probes that can be used with a single RMI or RMI-Q so long as they
all have the same “mode on” colour choice. All RMP600 probes are factory set to “mode off”.
The addition of any further probe(s) into a single probe installation will require that all probes are
reconfigured to the same “mode on” colour choice and that one of the probes is then repartnered with
the RMI or RMI-Q.
The addition of any further probe(s), or replacements, into a multi-probe installation can be achieved
through the reconfiguration of the probe to the same “mode on” colour choice and that one of the
probes is then repartnered with the RMI or RMI-Q.
Acquisition mode
System set-up is achieved using Trigger Logic and powering-on the RMI or RMI-Q.
Partnering is only required during initial system set-up. Further partnering is only required if the
RMP600, RMI or RMI-Q is changed.
NOTES:
Systems using the RMI-Q can be partnered with up to four RMP600s manually. Alternatively, this can
be achieved by using ReniKey; a Renishaw machine macro cycle which does not require the RMI-Q to
be power cycled.
For more information or to download ReniKey free of charge visit:
www.renishaw.com/mtpsupport/renikey
Partnering by ReniKey is not available for RMI.
Partnering will not be lost by reconfiguration of probe settings or when changing batteries, except
where “multiple probe mode” is selected.
Partnering can take place anywhere within the operating envelope.

2.7
RMP600 basics
RMP600 dimensions
Dimensions given in mm (in)
Stylus overtravel limits
Stylus length ±X/±Y Z
50 (1.97) 18 (0.70) 11 (0.43)
100 (3.94) 31 (1.22) 11 (0.43)
A range of probe-ready shanks
is available from Renishaw
50 (1.97) 19 (0.75) Battery cassette
Shank switch (optional)
Window
15°
15°
Ø63 (Ø2.48)
76 (2.99)
M4 stylus
Probe status LED
XY overtravel

RMP600 installation guide
2.8
RMP600 basics
RMP600 specification
Principal application Workpiece inspection and job set-up on multi-tasking machines,
machining centres and gantry machining centres.
Dimensions Length
Diameter
76 mm (2.99 in)
63 mm (2.48 in)
Weight (without shank) With batteries
Without batteries
1010 g (35.65 oz)
940 g (33.18 oz)
Transmission type Frequency hopping spread spectrum (FHSS) radio
Radio frequency 2400 MHz to 2483.5 MHz
Switch-on methods Radio M-code, spin on or shank switch
Switch-off methods Radio M-code, timer, spin off or shank switch
Probe feedrate (maximum) 3 mm/min (0.12 in/min) with auto-reset
Spindle speed (maximum) 1000 r/min
Operating range Up to 15 m (49.2 ft)
Receiver/interface RMI or RMI-Q combined interface and receiver unit
Sense directions ±X, ±Y, +Z
Repeatability 0.25 µm (10 µin) 2s– 50 mm stylus length 1
0.35 µm (14 µin) 2s– 100 mm stylus length
X,Y (2D) form measurement
deviation
±0.25 µm (10 µin) – 50 mm stylus length 1
±0.25 µm (10 µin) – 100 mm stylus length
X,Y, Z (3D) form
measurement deviation
±1.00 µm (40 µin) – 50 mm stylus length 1
±1.75 µm (70 µin) – 100 mm stylus length
Stylus trigger force 2 and 3
XY plane (typical minimum)
+Z plane (typical minimum)
0.20 N, 20 gf (0.72 ozf)
1.90 N, 194 gf (6.83 ozf)
Stylus overtravel force
XY plane (typical minimum)
+Z plane (typical minimum)
2.8 N, 285 gf (10.07 ozf) typical minimum 4
9.8 N, 999 gf (35.25 ozf) typical minimum 5
Stylus overtravel XY plane
+Z plane
±15°
11 mm (0.43 in)
1 Performance specification is tested at a standard test velocity of 240 mm/min (9.45 in/min). Significantly higher
velocity is possible depending on application requirements.
2 Trigger force, which is critical in some applications, is the force exerted on the component by the stylus when the
probe triggers. The maximum force applied will occur after the trigger point (overtravel). The force value depends
on related variables including measuring speed, machine deceleration and latency.
RENGAGE equipped probes offer ultra-low trigger forces.
3 These are the factory settings; manual adjustment is not possible.
4Stylus overtravel force in the XY plane occurs 80 μm (3149.61 µin) after the trigger point and rises by 0.35 N/mm,
36 gf/mm (32 ozf/in) until the machine tool stops (in the high force direction and using a carbon fibre stylus).
5Stylus overtravel force in +Z direction occurs 7 μm to 8 μm (275.59 µin to 314.96 µin) after the trigger point and
rises by 1.5 N/mm, 153 gf/mm (137 ozf/in) until the machine tool stops.

2.9
RMP600 basics
Environment IP rating IPX8, BS EN 60529:1992+A2:2013
IK rating IK01, BS EN 62262:2002+A1:2021 [for glass window]
Storage temperature −10 °C to +70 °C (+14 °F to +158 °F)
Operating temperature +5 °C to +50 °C (+41 °F to +122 °F)
Battery types 2 × AA 1.5 V alkaline or 2 × AA 3.6 V lithium-thionyl chloride (LTC)
Battery reserve life Approximately one week after a low battery warning is first given.
Typical battery life See table below.
Rechargeable
batteries
Either Nickel Cadmium (NiCd) or Nickel Metal Hydride (NiMh) can be
used. However, when these battery types are fitted, expect a battery life of
approximately 50% less than that quoted for alkaline batteries together with a
reduced low battery warning period.
Typical battery life
Battery type
Shank or spin switch on Radio switch on
Continuous use
Standby life 5% usage
(72 minutes/day)
Standby life 5% usage
(72 minutes/day)
Alkaline 650 days 100 days 130 days 60 days 115 hours
Lithium-thionyl
chloride 1300 days 200 days 260 days 120 days 230 hours
NOTE: Using RMP600 with “fast radio on mode” will result in a 5% reduction in usage and standby
battery life.

RMP600 installation guide
2.10
RMP600 basics
A
D
C
B
Recommended styli
High modulus carbon fibre styli are designed to minimise pre-travel and improve accuracy, as the
stem material is extremely stiff. This inherent stiffness makes the following styli most suitable for strain
gauge applications.
Part number A-5003-7306
Carbon fibre
A-5003-6510
Carbon fibre
A-5003-6511
Carbon fibre
A-5003-6512
Carbon fibre
ABall diameter mm (in) 6.0 (0.24) 6.0 (0.24) 6.0 (0.24) 6.0 (0.24)
BLength mm (in) 50.0 (1.97) 100.0 (3.94) 150.0 (5.91) 200.0 (7.88)
CStem diameter mm (in) 4.5 (0.18) 4.5 (0.18) 4.5 (0.18) 4.5 (0.18)
DEWL mm (in) 38.5 (1.52) 88.5 (3.48) 138.5 (5.45) 188.5 (7.42)
Mass g (oz) 4.1 (0.14) 6.2 (0.22) 7.5 (0.26) 8.7 (0.31)
The featured range of solid carbon fibre styli ensure the best possible performance of the RMP600.
It is possible that the featured range of solid carbon fibre styli may not be suitable for every RMP600
application and that it may be necessary to select specialised styli configurations to meet specific
application requirements.
In applications where specialised styli are to be used, it may be beneficial to reduce the speed of
probing moves. It has been seen in some cases that specialist styli configurations do not exhibit the
probing characteristics and performance that would have otherwise been expected and achieved
when using standard styli. Reducing the speed of the probing move may, in some cases, improve the
performance of the probe.
When selecting components for an application specific stylus, it is recommended that a configuration
with the least number of components is chosen. The stylus diameter should always be as large as
possible and the overall stylus length kept to a minimum. If a stem with a reduced diameter is required,
then it is recommended that an M4 stem with a short length and reduced diameter is selected.