Starrett SR100 Surface Roughness Tester Operating Guide

SR100 Surface Roughness Tester

Operating Guide

Mode status

Display

Parameter Status

Parameter Selector

Mode Selector

ArDA Windows

Traverse Unit

Stylus

ON Button

Start Buttons

Control Unit

Getting Started

Storage. The SR100 is supplied with the

Traverse Unit (bottom) connected to the

Control Unit (top). Before use, separate the

Traverse Unit from the Control Unit.

Note: To prevent damage to the stylus, store the SR100 with the units connected.

Inserting the Batteries

Remove battery covers as shown. Then, insert one 3V Lithium 2450 in to the Control

Unit and three 3V Lithium 2450s in to the

Traverse Unit as shown.

Caution:

- Use recommended

batteries only.

- Do not atttempt

to recharge used

batteries.

- Safely dispose of

used batteries

Control Unit

To separate, press here and tilt the Traverse

Unit as shown

Traverse Unit

Position the Traverse

Unit on the surface as shown

Then replace the battery covers. After the batteries have been changed, there will be a short delay when the SR100 is turned on.

The SR100 can be operated in two modes:

Remote or Connected.

Remote: Position the Control Unit within 40" (1 meter) of the Traverse

Unit. Data is passed between the two units over the IrDA link.

Note: Alignment between the

Traverse Unit and Control

Unit separation must be maintained during the measurement process.

Max. 40"

(1 meter) separation

Connected: In connected mode, the Control Unit is connected to the

Traverse Unit before the measurement is made, as shown. To connect the Control Unit to the Traverse Unit, insert the Control Unit as shown and tilt until the latch engages.

Turning On the SR100

When the Control Unit is not used for five minutes or more, it enters power save mode, turning the display off. Press any button to reactivate.

µm µin +

Ra Rz Rv Rp Rt

The Traverse Unit switches off completely after five minutes of inactivity.

To reactivate, press the On button. An LED will flash to confirm activation.

Low Battery Indicators

µm µin + µm µin +

Ra Rz Rv Rp

Control Unit

Rt Ra Rz Rv Rp

Traverse Unit

Rt

Set Up Procedure

A new SR100 is fully set up out of the box. However, if the pick-up is changed or another alteration is made, field setup may be required using the following procedure:

Press the On button on the Traverse Unit.

Position the traverse unit on the calibration standard in the correct orientation. First, press both selector buttons simultaneously and then press the right hand start button while still pressing both selector buttons.

The display will go through the following sequence over a 50 second period. The control unit must remain pointed at the traverse unit during this entire cycle.

µm

Ra

µm

µin

Rz

µin

Rv

-

-

Rp

+

+

Rt

Ra Rz Rv Rp Rt

Five values are stored and can be viewed by toggling the Selector button as follows:

1: Gain pot setting

2: Rz value (21.5 ±10%)

3: Speed pot setting

4: Rp value (Profile period signal (68 ±2%)

5: Can be ignored for this procedure

Note: If a setup error occurs, the procedure terminates and an E code is transmitted and displayed in the Control Unit (see E codes).

Calibrating the Gage

Position the Traverse Unit to measure the Calibration Standard included with the SR100

(DO NOT use other standards). Press Mode Se-

µm

on Mode status.

µin

+

Press the Start button on the Control Unit to initiate the gage calibration procedure. The result will be display the Control Unit. The Ra value should be 5.81µm and the Rz value 21.5µm.

If there is an error, an E code is displayed (see

E Codes).

Ra Rz Rv Rp

Measuring

Operation of the Control Unit is identical in either the Connected or Remote mode. Position the Traverse Unit on the surface to be measured, then press Select on the Control Unit to select the parameter to be displayed upon completion of the measurement.

Select either English or metric units with the

Mode button. If in remote mode, be sure to maintain line of sight of the infrared transceivers during the measurement.

Press either Start button to begin the measurement. The “measurement in progress” display is shown.

µm

Ra

µin

Rz Rv

-

Rp

+

Rt

The measured parameter is displayed as shown.

If there is an error, the appropriate E code is displayed (see E Codes).

µm

Ra

µin

Rz Rv

-

Rp

+

All parameters (not just the selected parameter) are transmitted to the Control Unit at the same time and temporarily stored. The stored results may then be stepped through using the select buttons.

Rt

Rt

Specifications

Traverse length: 0.2" (5mm)

Measurement length: 0.16" (4mm)

Traverse speed: 0.08in/s (2mm/s)

Gauge range: 8000µin (200µm)

Gauge resolution: 2µin (0.05µm)

Display resolution: Ra. 0.4µin (0.01µm)

Display resolution: 1µin (0.1µm) for

Rz, Rt, Rp, Rv

Cut off: 0.03" (0.8mm) ±15%

Uncertainty: 4µin (0.1µm) or 5% of result, to 95% confidence level

Results range: Ra. 1600µin (40µm)

(See ISO 4288-1996)

Results range: Rz, Rt, Rp, Rv. 8000µin (199.9µm)

(See ISO 4288-1996)

Stylus: Diamond. Radius: 123µin (5µm) nominal, 90 o tip angle. Skid radius: .394" (10mm) nominal.

Filter type: 2CR, (200:1)

Sample spacing: .025µin (1um)

Stylus Force: 1gf (10mN) max at mid range

Batteries:

Control Unit: (1) 3V Lithium 2450

Traverse Unit: (3) 3V Lithium 2450

Units: µin or µm

Operating conditions: 50-95 o F (10-35 o C) 80% RH non-condensing

Size: 4.92 x 3.15 x 1.5" (125 x 80 x 38mm)

Weight: 7oz (200g)

Error Codes

E1: Infra Red communication error. Repeat operation.

E2: Measurement attempted when not calibrated.

Calibrate the Traverse Unit.

E3: Traverse Unit - Oscillator fault. Retry. If fault is persistent, contact Starrett

E4: Traverse Unit - Motor Positioning fault. Retry. If fault is persistent, contact Starrett

E5: Traverse Unit - NVRAM Error. Retry. If fault is persistent, contact Starrett

E6: Traverse Unit - Profile Over-range. Retry measurement.

E7: Traverse Unit - Parameter Over-range. Retry measurement.

E8: Traverse Unit - Motor Speed Setup error. Retry

Set up procedure.

E9: Traverse Unit - Gain Setup error. Retry Set up procedure.

E10: Control Unit - Oscillator fault. Retry. If fault is persistent, contact Starrett

E11: Traverse Unit - Calibration information download error. Try again.

E12: Traverse Unit - Not set up. Run the Set up procedure.

E13: <Reserved>

E14: Traverse Unit - Electronic Measurement error. Retry. If fault is persistent, contact Starrett

Form 964 04/11 2.5C/T

The L.S. Starrett Company

121 Crescent Street, Athol, MA 01331

978-249-3551

978-249-3551

starrett.com