Datum: Center line

the centre line represents the waviness and form contents of the profile. It is placed such that the profile areas above and below are equal. The center line is generated by RC-filters or M-filters. Phase-correct M-filters avoid the typical profile distortions generated by RC-filters.

The Roughness profile R describes the departure from the mean line.

 

Rapp Industrial Sales
Surface Finish Equipment

  

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PERTHOMETER M1

 The Basic Model for Roughness Measurements

                 Entry-level roughness measurement

  
    
     

Mahr M300

Mahr Pocket Surf

Mahr Pkt. Surf PS1

Mahr M2

Mahr S-2

Surtronic 25

Starrett SR100

Starret SR200

Surtronic Duo

Fowler Surface Gage

SPI Surface Gage

Rugosurf 10

Rugosurf 10G

Rugo Surf 20

Rugosurf 90G

SRG-1000

SRG-4000

Srg-4500

Mitutoyo SJ210

Mitutoyo SJ-301

Mitutoyo SJ411

Digital Series 400

Analog System 1 & 3

MicroAnalyzer 2000

Referance Standard

Castings

Repair-Calibration

 

 

 

    
     

 

Pick-ups for multiple measuring tasks for the use with PFM/PFM 2

The pick-ups of type N are

characterized by special construction

features:

 

*Stylus tip geometry as per EN ISO 3274, standard 2m/90 (80 in/90)

*Measuring force of approximately 0.7mN (1.95 mozf) (as per EN ISO 3274)

*Reliable inductive converter

*Rugged, rigid housing

*Self-aligning, elastic bearings

*Reliable plus and socket connections

 

The standard NHT 6 pick-up

for example, adapts to various surface to be traced due to the special design of its tracing arm and skid. Further pick-ups such as the NHT 11 are suited for recessed measuring points and grooves.

 

 

 

 

     

 

 

 

 

 

    

 

 

 

 

 

 

 

 

 

NHTR-100 pickup    

Order #6111508

Single-skid pick-up with lateral, spherical skid, radius 0.3 mm in traversing direction, stylus radius 5 m (200 in), 90 suitable to measure inner radii in circumferential direction with a diameter larger than 12 mm (.472") (without figure).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    

 

        

The NHTF 0.5 for gear tooth flanks

enables roughness measurements even at hardly accessible points.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NHT 6-100 pickup

Order # 6111501

Typesingle skid pick-up with spherical skid
Skid Radius25mm (.984 in) in traversing direction, 2.9mm (.114 in) at right angles
Contact Point0.8 mm (.0315in) in front of the stylus
Measuring range100m (.00394 in)
Specificationfor plane surfaces, bores with a dia. larger than 6mm, (.236 in) and a max. depth of 17 mm ).669 in), grooves with a width larger than 3 mm (.118 in): a width larger than 3 mm (.118 in): min. workpiece length + traversing length + 1 mm (.0394 in)

NHT 6-150 pickup

Order # 6111504

Type

single skid up with spherical skid

Skid Radius

25mm (.984 in) in traversing direction, 2.9mm (.114 in) at right angles

Contact Point

0.8 mm (.0315 in) in front of stylus

Measuring Range

150 m (.00591 in)
Specificationfor plane surfaces, bores with a dia. larger than 6mm, (.236 in) and a max. depth of 17 mm ).669 in), grooves with a width larger than 3 mm (.118 in): a width larger than 3 mm (.118 in): min. workpiece length + traversing length + 1 mm (.0394 in)

 

NHT 11-100 pick-upOrder # 6111505
Typesingle-skid pickup with spherical skid
Skid radius25 mm (.984") in traversing direction, 2.9 mm (.114") at right angles
Contact point0.8 mm (.0315") in front of the stylus
Measuring range100 m (.00394")
Specificationfor plane surfaces, bores with a diameter larger than 11 mm (.433") and a max. depth of 14 mm (.551"), grooves with a width larger than 2.5 mm (.0984") and a max. depth of 7.5 mm (.295")

NHT pick-up extension (80 mm/3.15"), Order # 6850530

(for pick-ups of the "N-series")

 

 

NHT 3-100 pick upOrder # 6111502
TypeSingle skid pick-up with spherical skid
Skid radius25mm (.984 in) in traversing direction, 1.45mm (.0571 in) at right angles
Contact point0.9 mm (.0354in) in front of the stylus
Measuring range00 m (.0039 in)
SpecificationFor bores with a diameter larger than 3 mm (.118 in) and a maximum depth of 17 mm (.669 in). Minimum workpeice length + traversing length + 1 mm (.0394 in)

NHTF 0.5-100 pick upOrder # 6111503
TypeSingle-skid pick-up with spherical skid
Skid radius25mm (.984 in) in traversing direction, 1.45 mm (.0571 in) at right angles
Contact point
        PFM 2 drive unit                             

 

Traversing directiontransverse
Traversing lengthsset on the perthometer
as per DIN/ISO1.75mm, 5.6mm, (.07 in, .22 in)
as per EN ISO 120851mm, 2mm, 4mm, (.0394 in, .0787 in, .157 in)
Traversing speed0.5mm/s (.0197 in/s)
Dimensionsdia. 24mm (.945 in) L=112mm (4.41 in)
(w/o pick-up protection 

 

PFM 2 set      Order # 6720909

consisting of:

PFM drive unit

VEE pick-up protection

Pick-up protection

Screwdriver

Applications with PFM Drive Units

Accessories

PP vee-block   Order # 6710401 with four different prisms for mounting axis-symmetrical workpieces with diameters from 1 mm to 160 mm (.0394 in to 6.30 in). Dimensions (LxWxH) 100mm x 80mm x 40mm (3.91 in x 1.58 in). Weight 1.5 kg (3.31 lb.). Including clamping springs for holding light workpieces in the prism.

                               

XY table CT 120  Order # 6710529  for mounting and aligning workpieces. Can be adjusted in two coordinates by 15mm (.591 in). Table surface 120mm x 120mm (4728 in. x 4.728 in) with two brackets.                       

                                       

PPS parallel vice     Order # 6710604  for mounting rectangular and cylindrical workpieces. Jaw width 70mm (2.76 in), jaw height 25mm (.984 in), span 40mm (1.58 in), total height 58mm (2.28 in). Weight 2 kg (4.41 lb).

                                      

                                   

Shaft whippers for PFM 2 for diameters from 5mm to 80mm (100mm) (.197 in to 3.15 in/3.94 in)  Order # 6850738   Roughness measurements on workpieces which are still being manufactured require particular device for solving the measuring task (e.g. transverse tracing on crankshaft or camshafts).

Mahr or DKD calibration certificates are available on request.

                             

PRN 10 roughness standard     Order # 6820420   with Mahr calibration certificate. Roughness standard with turned profil, chromed. Profile depth approx. 10m (.394in). For checking the roughness measuring station.

                                                   

PGN 3 geometric standard   Order # 6820601   (w/o figure)  Surface roughness standard with a sinusoidal froove profile. Profile depth approx. 3m (120uin), groove spacing approx. 0.12mm (.00472 in). For checking the roughness measuring station.

The Perthometer Sets for Mobile Operation

Perthometer M1 set       Order # 6910134

Perthometer M1 set with 2008143 patch      Order # 2190827

The Perthometers of the M series are delivered as a set in a handy carrying case. The instrument is thus safely packed for transport. The components included in the set can be easily and quickly be assembled to form a complete measuring station.

Home   Surface Articles    Contact Us  888-789-7277  Line Card 

Rapp Industrial Sales * 127 Main Street * Connoquenessing, Pa 16027

Phone 888-789-7277 * 724-789-7853 * Fax 724-789-7288 Email: sales @rappindustrialsales.com

   

0.6 mm (.236 in) beside the stylus
Measuring range100 m (.00394 in)
SpecificationFor gear tooth flanks with a modulus larger than 0.8.

Decription

This instrument serves for determining and documenting the most common parameters as per DIN EN ISO/AMSE/prEN 10049 (Ra, Rz, Rmax, and RPc) and according to the JIS Japanese standard (Rz, Ra).

With a minimum of keys, the Perthometer M1 is characterized by a multitude of functions. An automatic function enables periodic and aperiodic profiles to be identified and the cutoff to be set according to standards without any prerious test measurement, such that unintentional non-standard measurements are excluded.

In mobile use, the measuring record can be output on the built-in thermal printer automatically or simply by pressing a key. Stationary operation offers the possibility of connecting the Perthometer directly to a PC via the serial interface.

Delivery as a set in a handy carrying case.   

Perthometer M1 set                      Order No. 6910134  

Perthometer M1 Set with 2008143 Roughness Master            Order No. 2190827    

                                         

Features

● Measuring range of up to 150m (6,000in)

● Units m/in selectable

● Standards: DIN/ISO/JIS  

● Traversing length 1.75mm, 5.6 mm, 17.5mm (.7in, .22in, 0.7in)

● Cutoff 0.25mm/0.80mm/2.5mm (.010in/.032in/.100in)

● Short cutoff selectable

● Number of sampling lengths selectable from 1 to 5

● Automatic selection of filter and traversing length conforming to standards

● Phase-correct profile filter as per DIN EN ISO 11562

● Parameters as per DIN/ISO/SEP: Ra, Rz, Rmax, RPc and JIS: Ra, Rz

● Automatic scaling according to the profile amplitude

● Printing of roughness profile and measuring record

● Dynamic pick-up calibration

● Blocking of instrument settings for preventing unintentional modifications

 

       

 

 

 

 

 

 

 

 

 

 

 

 

 

 

        

 

 

                                                       

      

 

 

      

Efficient application aids for manufacturing

Tough manufacturing environments require quick and easy roughness measurement. The shop floor is particularly demanding on measuring instruments. Application aids from Mahr are the perfect solution.

 

 

               

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drive Units for Mobile Roughness Measuring Instruments

 

                PFM drive unit

     

The PFM drive unit can be connected to the Perthometers M1 and M2. It forms part of the Perthometer sets.

The drive unit can be used with the well-proved NHT skidded pick-ups.

For special measuring tasks, e.g. on crankshafts, the PFM 2 drive unit with traverse tracing is available. This is connected as the standard PFM drive unit. If both drive units are used, the range of applications of the mobile Perthometers M1 and M2 is considerably raised.

 

PFM drive unitOrder # 6720907
Traversing directionlongitudinal
Traversing lengthsset on the perthometer
as per DIN/ISO1.75 mm, 5.6mm, 17.5mm (.07in, .22 in, .7 in)
as per EN ISO1 mm, 2mm, 4mm, 8mm, 12mm, 16mm (.0394 in, .0787 in, .157 in, .315 in, .472 in, .63 in)
Traversing speed0.5mm/s (.0197 in/s)
Dimensionsdia. 24mm (.945 in)
(w/o pick-up protection)L=112mm (4.41 in)