Coolant Proof Micrometers SERIES 293 Mitutoyo

Coolant Proof Micrometers SERIES 293 — with Dust/Water Protection Conforming to IP65 Level

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SPECIFICATIONS


Metric


Order No
Range
Resolution
Accuracy*
Parallelism
Constant-force device
Mass
with SPC
data output
293-230-30
0-25mm
0.001mm±1μm
1μm
With Ratchet Stop
270g
293-231-3025-50mm330g
293-232-3050-75mm2μm470g
293-233-3075-100mm±2μm
625g
293-250-30
100-125mm3μm600g
293-251-30125-150mm740g
293-252-30150-175mm±3μm800g
293-253-30175-200mm4μm970g
293-254-30
200-225mm1100g
293-255-30225-250mm±4μm1270g
293-256-30250-275mm1370g
293-257-30275-300mm5μm1590g
293-234-30
0-25mm±1μm1μmWith Ratchet Thimble
280g
293-235-3025-50mm340g
293-236-3050-75mm2μm480g
293-237-3075-100mm±2μm635g
without SPC
data output
293-240-30
0-25mm0.001mm±1μm1μmWith Ratchet Stop270g
293-241-3025-50mm330g
293-242-3050-75mm2μm470g
293-243-3075-100mm±2μm625g
293-244-300-25mm±1μm1μmWith Ratchet Thimble280g
293-245-3025-50mm340g
293-246-3050-75mm2μm480g
293-247-3075-100mm±2μm635g

* Excluding quantizing error
• All-Digit preset type: models over 125mm (5”) measuring range


 Inch/Metric


Order No
Range
Resolution
Accuracy*
Parallelism
Constant-force device
Mass
with SPCdata output293-330-30
0-1".00005"
/0.001mm
±.00005”
.00004"With ratchet stop270g
293-331-301"-2"330g
293-332-302"-3".00008"470g
293-333-303"-4"±.0001"625g
293-350-30
4"-5".0001"
/0.001mm
.00012"600g
293-351-305"-6"740g
293-352-306"-7"±.00015"800g
293-353-307"-8".00016"970g
293-354-30
8"-9"1100g
293-355-309"-10"±.0002"1270g
293-356-3010"-11"1370g
293-357-3011"-12".0002"1590g
293-334-30
0-1".00005"
/0.001mm
±.00005".00004"With ratchet thimble
280g
293-335-30With friction thimble
340g
293-336-301"-2"480g
without SPCdata output293-340-300-1".00005"
/0.001mm
±.00005".00004"With ratchet stop
635g
293-341-30
1"-2"270g
293-342-302"-3".00008"330g
293-343-303"-4"±.0001"470g
293-344-300-1"±.00005".00004"With ratchet thimble
625g
293-345-301"-2"280g
293-346-302"-3".00008"340g
293-347-303"-4"±.0001"480g
293-348-300-1"±.00005".00004"With friction thimble
635g

  * Excluding quantizing error
• All-Digit preset type: models over 125mm (5”) measuring range
 

 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
  • Flatness:  0.3μm/.000012”
  • Dust/water protection level: IP65 (IEC60529) *2
  • Measuring force: 5 to 10N (ratchet thimble type is 7 to 12N.)*3
  • Battery: SR44 (1 pc), 938882, for initial operational checks (standard accessory)
  • Battery life: Approx. 2.4 years under normal use
  • Length standard: Electromagnetic rotary sensor
  • Standard accessories:Reference bar, 1 pc (except for 0-25mm (0-1”) models) Spanner (301336), 1 pc
*2 Rustproofng shall be applied after use.
*3 Refer to page B-4 for details.

Functions

  • Origin point setting (ABS measurement system):
    Resets the ABS origin at the current spindle position to
    the minimum value of the measuring range and switches
    to ABS mode.
  • Zero-setting (INC 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 where the
    instrument must be moved away from the workpiece
    before the reading can be recorded.
  • Data output*4 :
    Models equipped with this function have an output port
    for transferring measurement data to a Statistical Process
    Control (SPC) system.
    *4: Only models with the data output function
  • Auto power ON/OFF:
    The reading on the LCD disappears after this instrument
    is idle for about 20 minutes, but the reading and
    measurement mode are retained. Turning the spindle
    causes the reading to reappear.
  • 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.
  • 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.
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