293-140
- Advanced pioneering technology has created the next generation of micrometer, the most revolutionary advance in micrometer technology since James Watt invented the instrument.
- Faster measurement is achieved by using a coarser thread which feeds the spindle by 2mm per revolution of the thimble. This increase in thread lead has been made possible thanks to new high precision threadcutting and testing techniques.
- The patented ratchet thimble mechanism* helps ensure repeatable results by transmitting microvibrations along the spindle to the contact face to provide a constant measuring force and encourage good contact with the workpiece. The ratchet works from the thimbleas well as the speeder so it is always easy to use – even when making measurements onehanded. The sound of the ratchet provides the user with a sense of confidence and the speeder enables the rapid spindle feed needed when measuring widely different dimensions.
*Patent registered (in Japan, USA, China, Germany, UK and France) 
- There is a lineup of convenient Interface Input Tools which enable the conversion of measurement data to keyboard signals and directly input them to cells in off-the-shelf spreadsheet software such as Excel. (Refer to page A-5 for details.)
- Excellent resistance against oil, water and dust (IP65 protection level) enables this product to be used in machining situations that include splashing coolant fluid.
- Measuring faces: Carbide.
SPECIFICATIONS
Metric
| Order No. | Range | Resolution | Accuracy*1 | Flatness | Parallelism | Mass | |
|---|---|---|---|---|---|---|---|
|
with SPC data output |
293-140-30 | 0 – 25mm |
0.001mm |
±1µm |
0.3µm |
1µm | 265g |
| 293-141-30 | 25 – 50mm | 325g | |||||
| 293-142-30 | 50 – 75mm |
2µm |
465g | ||||
| 293-143-30 | 75 – 100mm | ±2µm | 620g | ||||
|
without SPC data output |
293-145-30 | 0 – 25mm |
±1µm |
1µm |
265g | ||
| 293-146-30 | 25 – 50mm | 325g | |||||
| 293-147-30 | 50 – 75mm | 2µm | 465g | ||||
| 293-148-30 | 75 – 100mm | ±2µm | 620g |
*1 Excluding quantizing error
Inch/Metric
| Order No. | Range | Resolution | Accuracy*1 | Flatness | Parallelism | Mass | |
|---|---|---|---|---|---|---|---|
|
with SPC data output |
293-180-30 | 0 – 1″ |
.00005″/ 0.001mm |
±.00005″ |
.000012″ |
.00004″ | 265g |
| 293-181-30 | 1″ – 2″ | 325g | |||||
| 293-182-30 | 2″ – 3″ |
.00008″ |
465g | ||||
| 293-183-30 | 3″ – 4″ | ±.0001″ | 620g | ||||
|
without SPC data output |
293-185-30 | 0 – 1″ |
±.00005″ |
.00004″ |
265g | ||
| 293-186-30 | 1″ – 2″ | 325g | |||||
| 293-187-30 | 2″ – 3″ | .00008″ | 465g | ||||
| 293-188-30 | 3″ – 4″ | ±.0001″ | 620g |
*1 Excluding quantizing error
DIMENSIONS
IP Codes
Level 6: Dust -proof.
No ingress of dust allowed.
Level 5: Protected against water jets.
Water projected in jets against the enclosure from any direction shall have no harmful effects.
Technical Data
Dust/Water protection level: IP65 (IEC60529)*2
Measuring force: 7 to 12N*3
Battery: SR44 (1 pc), 938882, for initial operational checks (standard accessory)
Length standard: Electromagnetic rotary sensor
Battery life: Approx. 1.2 years under normal use
Standard accessories: Reference bar, 1 pc (except for 0-25mm (0-1”) models) Spanner (No. 301336), 1 pc
*2 Rustproofing shall be applied after use.
*3 Measuring force when using the speeder ratchet
(Apply a measuring force in the same condition as for measurement and then set the origin.)
Functions
Origin point setting (ABS length measurement system):
Pressing the ORIGIN button resets the ABS origin at the current spindle position. Origin values can be set depending on each size.
Zero setting (INC length measurement system):
A brief press on the ZERO/ABS button sets display to zero at the current spindle position and switches to the incremental (INC) measuring mode. A longer press resets to the ABS measuring mode.
Hold:
Pressing the HOLD button freezes the current value in the display. This function is useful for preserving a measurement in situations of poor visibility when the instrument must be moved away from the workpiece before the reading can be recorded.
Function lock:
This function allows the ORIGIN (origin point setting) function and the ZERO (zero setting) function to be locked to prevent these points being reset accidentally.
Auto power ON/OFF:
The reading on the LCD disappears after this instrument is idle for approx. 20 minutes, but the origin point is retained. Turning the spindle causes the reading on the LCD to reappear.
Data output*4:
Models equipped with this function have an output port for transferring measurement data to a Statistical Process Control (SPC) system.
Error alarm:
In case of an overflow on the LCD or a computing error, an error message appears on the LCD, and the measuring function stops. This prevents an instrument from giving an erroneous reading. Also, when the battery voltage drops to a certain level, the low-battery-voltage alarm annunciator appears well before the micrometer becomes unusable. *4: Only for the models with SPC data output.
Optional accessories
(Only for models with data output function)
Connecting cables with output switch
1m: No. 05CZA662
2m: No. 05CZA663USB
Input Tool Direct
USB-ITN-B (2m): No. 06ADV380B
Connecting cables for U-WAVE-T (160mm)
No. 02AZD790B
For foot switch: No. 02AZE140B Refer to page A-21 for details.