Air Gap Sensor [DPA-SR2/LR2 Series]

Air Gap Sensor [2-point setting type ] DPA-SR2 / LR2 Series

3-class identification for streamlined bore inspections

The "+NG/OK/ -NG 3-class judgment good/failure function" enables significant cost reductions in the inspection process by determining the inner diameter of the workpiece.
Replaces "time-consuming pin gauges" and "expensive air micrometers" for determining the inside diameter after drilling, contributing to time saving and cost reduction.

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Main Challenges

  • Reduce the time required to measure inside diameters using pin gauges and cylinder gauges.
  • Automate bore inspection (fool-proofing) at low cost.
  • Eliminate variation in measurement results from one worker to another, and make performing borehole measurements easy for anyone.

Features

External input available

Threshold settings allow external input using NC. This prevents the operator from changing the set value with a button input.

3-class identification and output

3-class identification and output

Two thresholds, upper and lower limits, can be set for three levels of judgment: +NG/OK/ -NG.
Highly accurate detection with ±0.5μm repeatability enables seat confirmation and class identification.

Reduces machining cycle time

Reduces machining cycle time

IP67 rating for protection against water, coolant, and dust, and the sensor can be installed inside the machine for shorter air piping.
Shorter pipe length improves signal response and contributes to shorter cycle time in mass production lines.
Coolant flooding tests and severe durability tests are conducted on machine tools assuming that they will be used in adverse environments.

Simple operation

Simple operation

Threshold Setting” is completed with a single push.
Simply place the master workpiece or shim between the seating surface and the workpiece and press the master set button to complete setting.
Anyone can easily set the threshold value, thus eliminating variation in setting values among different operators.

Supply air self-diagnostic function

The self-diagnostic function outputs an alarm when an error occurs in the air supply pressure.
It notifies you of insufficient pressure, pressure fluctuation while the sensor is in use, and excessive pressure.

Air Gap Sensor Identification Method

エアマイクロセンサの判別方法

Inner diameter inspection by AIR GAP SENSORS

エアマイクロセンサを使用したワークの内径寸法判別

JIMTOF2018 新製品動画 NEWS ~空圧式ギャップセンサの新たな使用方法を発表！~

「エアマイクロメーター」からの置き換えで、大幅コスト削減！【エア式精密着座センサ】*

「手間のかかる「ピンゲージ」の内径検査 さようなら」【エア式精密着座センサ】*

Specification

Product name DPA-SR2 DPA-LR2
Poupose of use Seating confirmation of workpieces or workpieces with rough surface,
Inner diameter inspection
Signal points can be set 2
How to set the signal point Set by ＋LIMIT SET button, －LIMIT SET button
＋LIMIT SET input and －LIMIT SET input
*The signal point values are savedeven when the power is turned off.
Detection range
 1 - 100μm （When uging a recommended nozzle） 80 - 350μm （When uging a recommended nozzle）
Repeatability  ±0.5μm (Detection range：1 - 60μm)
±1μm (Detection range：60 - 100μm)
*Air pressure change: within ±1％ 		±1μm (Detection range：80 - 150μm)
±3μm (Detection range：150 - 250μm)
±5μm (Detection range：250 - 350μm)
*Air pressure change: within ±1％
Protective structure IP67
Output mode NO（Normally Open）
Fluid Dry air（filtered to 5μm）
Setting pressure 150 - 200kPa
Consumption flow rate 9ℓ/min (max) 24ℓ/min (max)
Connection port diameter Rc1/8
Recommended tube: SUP port φ6×φ4 tube
Recommended tube: OUT port φ4×φ2.5 tube
φ6×φ4 tube
*A diameter of the connection tube for leakage unit (accessory) is φ6. Please prepare a conversion adapter if you use a connection tube of φ4.
Response speed 0.8 seconds
(Tube length 1.5m / Time between the air pressure supply and the signal output of the sensor.)
Input Specification Photocoupler input
DC24V±10％
Output specification Photocoupler output(Non-voltage floatingoutput)
(collector emitter floating)
Rated voltage：DC24V ±10%
Rated current：20mA
Low level output voltage: less than 1.5V(at 15mA）
Cable Standard length 3m　Oil resistance φ5.5 / 16 cores　AWG28
Electrical response speed 10ms
LED lump See manual
Accessory Leakage unit (x1) 0
Operating temperature range 0℃ - 60℃（no condensation）

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