Starrett 2900 Series User manual

User Manual
2900 Capacitive Series
Electronic Indicator
starrett.com
IP67
IP67
2900-3-1
2900-3M-25
2900-3ME-25
2900-5-1
2900-5M-25
2900-5ME-25

Table of Contents
Guidelines for Indicator Care ......................................................................... 2
2900 Capacitive Series Indicator Models ....................................................... 3
Button Functions ........................................................................................... 4
Indicator Components, Dimensions & Layout ................................................ 5
Operating Instructions ................................................................................... 5
Setting the PRESET Function* ....................................................................... 6
Setting MIN/MAX Limits (Go/No Go)* .............................................................6
Displaying MIN/MAX/TIR Values* ...................................................................8
Data Output Connection ................................................................................ 8
Battery Installation ........................................................................................ 9
Parts & Accessories ...................................................................................... 9
Appendix A: Technical Specifications ........................................................... 10
Appendix B: Serial Output Connector ...........................................................11
*Available on 2900-5 Advanced Features Models
Guidelines for Indicator Care
1. Avoid dropping the indicator.
2. Avoid extreme temperatures and direct sunlight for extended periods.
3. Avoid shocks to the contact point and spindle.
4. Do not apply radial force to the spindle.
5. If the indicator is stem-mounted, protect it from being hit or bumped to avoid
stem/case mechanical alignment damage.
6. Do not over-tighten the mounting mechanism. If possible, use clamp mounting
rather than set screws to prevent damage to the spindle.
7. Clean the spindle frequently with a dry cloth or a chamois to prevent sluggish
or sticky movement. Isopropyl alcohol may be used to remove gummy deposits
on metallic parts. Do not apply lubricant to the spindle or use solvents.
8. Do not disassemble or modify the indicator.
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Cat. No. EDP Description Resolution Range Stem
Diameter
2900-3-1 09963 Standard Features
English .0005"/.01mm 1"/25mm .375"
2900-3M-25 09964 Standard Features
Metric .01mm 25mm 8mm
2900-3ME-25 09975 Standard Features
English/Metric .0005"/.01mm 1”/25mm 8mm
2900-5-1 09967 Advanced Features
English .0005"/.01mm 1"/25mm .375"
2900-5M-25 09968 Advanced Features
Metric .01mm 25mm 8mm
2900-5ME-25 09978 Advanced Features
English/Metric .0005"/.01mm 1”/25mm 8mm
2900 Capacitive Indicator Models, Feature Level, Resolution & Range
2900-3-1
2900-3M-25
2900-5-1 2900-5M-25

1 ON/OFF Power button. Press and release to turn on, and press and hold for
three seconds to turn off.
2 +/- Plus/Minus sets the direction of the reading
3 ZERO Press and release the ZERO button and the display will zero. The
spindle must not be moved from its zero location until after two
seconds have elapsed.
4 IN/mm Toggles the display between English or Metric modes.
5 SHIFT/SET Dual function button used to enable the, Preset and the Limits (Go/
No Go) function. When enabled the SET (S) icon will be displayed on
the top left corner of the display.
6 LIMITS Press the SHIFT/SET button, then press the LIMITS button to enable
the Go/No Go function. This sets the Min and Max values for the Go/
No Go function.
7 PRESET Press the SHIFT/SET button then press the PRESET button to enable
the PRESET function.
8 ZERO/ABS Dual Function. Press and hold for two seconds to activate the ABS
mode or to exit the ABS mode. To zero the display, see #3 above.
9 MIN/MAX/TIR Displays the minimum or maximum values captured during
setting the min/max limits operation. The TIR function displays
the difference between the two captured readings.
conjunction with the SHIFT/
SET button (also yellow).
To enable these functions
press the SHIFT/SET button
first. The SET (S) icon will
appear in the top left corner.
Then press the button for the
required function.
9
5
4 & 6
1
3, 7 & 8
2
Button Functions
The functions printed in yellow;
LIMITS and PRESET are used in
4
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Stem Cap
Data
Cable
Spindle
Bellows
Spindle
Contact Point
Stem Data
Output
Cover
Battery
Drawer
Back Lug
1-21/32"
(42.2mm)
1/4"
(6.4mm)
1/4"
(6.4mm)
2-5/64" (52.8mm)
3/8" (9.5mm) or
8mm (.315")
Indicator Components, Dimensions & Layout
1. Install batteries (included with indicator).
2. Lightly clean the contact point.
3. Secure the indicator to an appropriate holding device.
4. Press the ON/OFF button (or move the spindle) to turn the indicator on.
5. Select the unit of measure (inch or mm) by pressing the IN/mm button.
ME indicators have this function but standard metric indicator models do not.
6. Place the indicator perpendicular to the reference surface being measured.
Allow enough movement to be able to take a higher or lower measurement.
7. Press the ZERO button to reset the display.
8. Lift the spindle and remove the reference surface. Then, place the work
piece and carefully position the spindle on to its surface. The measured
value will be shown on the LCD.
9. Press and hold the ON/OFF button to turn the indicator off. If left unattended,
it will turn off automatically in 30 minutes.
Operating Instructions
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Setting the PRESET Function*
1. To set a value, press and hold the ZERO/ABS
button until the ABS icon appears in the upper
right corner of the LCD (right). The values can
be SET to: +/-99.99999" or +/-9999.999mm.
2. Press the SHIFT/SET followed by the PRESET
button. The SET (S) and PRESET (P) icons will
appear in the upper left corner of the LCD. The
PRESET icon will be flashing (middle right).
3. To move from the PRESET icon to a digit,
press the SHIFT/SET button. A flashing digit
indicates that it is ready to be SET (lower right).
Press the PRESET button to increment the
value. To set, press the SHIFT/SET button.
4. To move to the next digit press the SHIFT/SET
button and repeat step 3. Repeat steps 2 and
3 until all the digits are SET.
5. To set a negative value, press PRESET when
the plus/minus sign icon is flashing.
6. To exit the PRESET function, press the PRESET button when the PRESET icon is
flashing. The SET value will remain displayed.
7. Press and hold the ZERO/ABS button to return to the active measuring mode.
Press Then to enter Preset Mode
to increment the value of the digit or the plus/minus sign
Press
Press to cycle from digit to digit and back to preset
Setting MIN/MAX Limits (Go/No Go Function)*
1. Select the units to be displayed.
2. Press the SHIFT/SET button. The SET icon will
appear in the upper left (right).
3. Press the LIMITS button. The MIN LIMIT icon
will appear in the upper middle of the display.
4. Press the SHIFT/SET button. The LIMIT icon
will flash on/off.
5. Adjust the spindle to the desired minimum value.
* Available on 2900-5 Advanced Features Models
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6. Press the SHIFT/SET button to capture the minimum value. The LIMIT icon will stop
flashing.
7. Press the LIMITS button. The MAX LIMIT icon will
appear on the LCD (right).
8. Press the SHIFT/SET button. The LIMIT icon will
flash on/off.
9. Adjust the spindle to the desired maximum value.
10. Press the SHIFT/SET button to capture the maximum value. The LIMIT icon will
stop flashing.
11. Press the LIMITS button go/no go function. If the reading is not within the set range,
the display will flash and the SET icon will remain on. The MAX and MIN icons will
stay off as long as the reading is within the set limits. If the measurement is beyond
the set limits the display will flash and the MIN or MAX LIMIT icon will indicate the
direction the limit has been exceeded. To exit Press the LIMITS button.
Press The LIMIT icon will flash on/off
Press Then to enter Min Limit Mode
Then press To capture the minimum value.
The LIMIT icon will stop flashing.
Press The MAX icon will appear.
Press The LIMIT icon will flash on/off.
Adjust the spindle
to the desired value
Press
Then press To capture the maximum limit.
The LIMIT icon will stop flashing.
Press The Indicator is now set up with a
maximum and minimum limit range
Press To exit the LIMIT mode.
adjust the spindle to the
desired minimum value.
Press
* Available on 2900-5 Advanced Features Models
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Displaying MIN/MAX/TIR Values*
(TIR is “Total Indicator Reading”)
Pressing the MIN/MAX/TIR button displays the MIN/
MAX/TIR values most recently measured.
Press once for MIN (above right), twice for MAX
(middle right) and three times for TIR (lower right).
Press a fourth time to exit. The MIN/MAX/TIR values
may be zeroed by pressing the ZERO button.
* Available on 2900-5 Advanced Features Models
Data Output Connection
To connect an output cable, remove the screws securing the output cover,
then remove the cover.
Orient the data cable plug as shown below, plug it in, then secure it with
the same screws that held the cover.
When not using output, be sure
to keep the output cover on
the indicator to protect
the electronics
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Battery Replacement
To replace the batteries, remove the two Phillips
screws that secure the battery drawer, slide out
and remove the battery drawer and discard the
old batteries.
Place two new CR2032 batteries
into the tray with the positive
(+) side facing up. Slide the tray
carefully into the indicator and
secure with the two screws.
To order CR2032 batteries,
specify: PT99492. EDP 65650
Parts & Accessories
2900 Series indicators include a Lug-On-
Center back. It is interchangeable with
a number of separately available backs
including Lug-Off-Center, Flat, Adjustable
Bracket, Post-Type Lug, and the Screw-type
Lug. Be sure to only remove the back cover
in a clean environment.
Several other styles of contact points are
also available as are replacement screws,
spindle, spindle bellows and stem caps. For
available accessories and parts, refer to
starrett.com online or the Starrett Catalog.
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Appendix A: Technical Specifications
Power Requirements and Current Consumption
Battery 2 – CR2032 Lithium Coin Cells
Capacity 240 mAh
Automatic Sleep Time 30 minutes of non-use
SPC Serial Output
18 ASCII Characters 1 Space character
2 Status characters indicating the operating mode
BLANK Normal mode
OL Displacement outside Lower Limit
OU Displacement is outside the Upper Limit
MN Displacement is minimum peak displacement stored
MX Displacement is maximum peak displacement stored
TR Displacement is the T.I.R. stored
LL Displacement is the lower or minimum limit setting
LU Displacement is the upper or maximum limit setting
HL Displacement is a held displacement
1 Sign character (minus but no plus)
1 Space character (IN mode only)
6 Digits
1 Decimal point
2 Spaces
2 Character strings to indicate units “IN” or “mm”
1 Carriage return
1 Line feed
Communication Protocol
Baud Rate 4800
Data Bits 8
Parity None
Stop Bits 2
Flow Control None
Data Request and
Response Timing
Receive High to Low Momentary
Response Time Delay 120 ms
Transmit Time 45 ms
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Appendix B: Serial Output Connector
Pin 1 GND – Signal return
Pin 2 Serial Receive Data Input (RX/RQST)
Pin 3 Serial Transmit Data Output (TX/DATA)
Pin 4 Remote Zero – Special Order Only
State Change High to Low
Serial Input Voltage Level Specification
Logic “0” Vin < 1.30 Volts
Logic “1” Vin > 1.98 Volts
Serial Output Voltage Level Specification
Minimum Maximum
Low Level Vss Vss +0.25 @ -1.5mA Load
High Level Vdd –0.25 @ 1.25 mA Load Vdd
Note: Vss = 0 Volts, Vdd = 2.7 to 3.6 Volts
Environmental Consideration
Temperature 10-30 °C,
Humidity 30-85%RH (no condensation)
Atmosphere Non-corrosive, Non-flammable
IP67 Rating (Ingress Protection Rating)
6 No ingress of dust
7 No ingress of water when submerged to 1m deep for 30 minutes
IP67 rating
assured only
if all parts
listed right are
attached and
tightly secured
Spindle Bellows
Back-lug with Gasket
Stem Cap
Data Output Cover or Data Cable with Gasket
Battery Door with Gasket
Pin 1
Pin 2
Pin 3
Pin 4
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2900
Form 978
1M/T 10/12
The L.S. Starrett Company 2012©
Specifications subject to change.
The L.S. Starrett Company
121 Crescent Street
Athol, MA 01331
Tel: [phone]
starrett.com