Strain gauge structure The Renishaw RMP600 is a compact, high accuracy touch probe with radio signal transmission, offering all the benefits of automated job set-up, plus the ability to measure complex 3D part geometries on all sizes of machining centres including 5-axis machines.

The RMP600 successfully combines the patented Rengage™ strain gauge technology with the unique frequency hopping radio transmission system from the RMP60.

Strain gauges attached to the structure measure the smallest of stylus motions, allowing for a very sensitive system.

This innovative RENGAGE™ technology built into the RMP600 brings unrivalled performance in terms of 3D measurement. Use the RMP600 with Renishaw OMV for advanced on-machine verification when machining contoured surfaces and complex shapes.

The 2.4 GHz frequency band is compliant with radio regulations in the EU, USA, Japan, Canada, Switzerland, Australia, New Zealand.

RMP600 features and benefits

Patented RENGAGE™ technology gives very low and highly consistent contact forces as well as Sub micron 3D performance on contoured surfaces
Increased stylus lengths can be supported without a significant decrease in probe performance
Frequency hopping spread spectrum (FHSS) transmission means that once partnered, the RMP600 and RMI hop frequencies together to provide reliable communications
The RMP600 utilizes accelerometers to detect shock and motion to assess whether stylus forces are due to valid triggers or high speed acceleration
Multiple probe mode is available on RMP600 to allow the use of many different probes with the same RMI receiver
3D performance is ideal for the calibration and mapping of 5-axis machines

RMP600 specification

Specification
Sense directions	Omni-directional ± X, ± Y, + Z
Transmission type	Frequency hopping spread spectrum (FHSS) radio. 2400 - 2483.5 MHz
Operating range	15 m (49.2 ft)
Switch-on method	Radio M code, spin on or shank switch
Switch-off method	Radio M code, timer, spin off or shank switch
Uni-directional repeatability	0.25 µm (10 µin) 2 sigma - 50 mm stylus length* 0.35 µm (14 µin) 2 sigma - 100 mm stylus length
2D lobing in X, Y	± 0.25 µm (10 µin) 2 sigma – 50 mm stylus length* ± 0.25 µm (10 µin) 2 sigma – 100 mm stylus length
3D Lobing in X, Y, Z	± 1.00 µm (40 µin) 2 sigma – 50 mm stylus length* ± 1.75 µm (70 µin) 2 sigma – 100 mm stylus length
Trigger speed range	10 mm/min to 1 m/min
Stylus trigger force** XY plane + Z direction	0.1 N, 10 gf (0.36 ozf) typical minimum 1.9 N, 193 gf (6.83 ozf) typical minimum
Stylus overtravel force** XY plane + Z direction	1.2 N, 122 gf (4.31 ozf) typical minimum § 4.8 N, 489 gf (17.26 ozf) typical minimum †
Stylus overtravel XY plane + Z direction	± 15° 11 mm (0.43 in)
Battery type	2 x AA 1.5 V alkaline or Lithium Thionyl Chloride
Battery life (using LTC) stand by (radio) 5% usage continuous life	195 days 85 days 170 hours
Sealing	IPX8 (BS 5490, IEC 529) 1 atmosphere

* Performance specification is for a test velocity of 240 mm/min (9.45 in/min) with a 50 mm carbon fibre stylus. Test velocity does not constrain performance in application.

** The stylus trigger force is the force exerted on the component when the probe triggers. However, the maximum force applied to the component will occur after the trigger point and will be greater than the trigger force. The magnitude depends on a number of factors affecting probe overtravel including measuring speed and machine deceleration. If the forces applied to the component are critical, contact Renishaw for further information.

§ Stylus overtravel force in XY plane occurs 40 µm after the trigger point and rises by 0.19 N/mm, 19 gf/mm (17 oz/in) until the machine tool stops (in the high force direction and using a 50 mm carbon fibre stylus).

† Stylus overtravel force in + Z direction occurs 7 µm to 8 µm after the trigger point and rises by 1 N/mm, 102 gf/mm (76.2 oz/in) until the machine tool stops.

RMP600 software options

The following software packages can be used to program probing routines for work piece set-up and inspection on CNC machining centres

EasyProbe - entry-level package for simple work piece set-up

Inspection - basic set-up and work piece inspection cycles, with automatic update of offsets

Inspection Plus - an integrated suite of inspection cycles including vector measurement

Productivity+ Active Editor Pro - a PC-based software package with GUI, allowing the user to select features directly from an imported CAD model, making the generation of probing cycles even easier.

Renishaw OMV - A PC-based software package for verification of complex parts and live data capture to PC during probing for instant feedback on component quality.