Intrinsically Safe Tachometer
World’s first intrinsically safe Hand Tachometer
Two Models available

Model A2109/LSR for measurement only
Model A2109/LSR/002 for measurement and pulse output facility

The very high level of certification EEx ia IIC T4 - ATEX II 2 G, allows use in a wide range of hazardous environments in petrochemical, Gas & volatile materials processing industries.
The Advent Tachometers very comprehensive operational features provide the user with the ultimate in Optical & Contact speed monitoring not previously possible in hazardous areas.

Contact measurements
With A2100/01 Adaptor fitted (supplied) rpm, rps, Metres, Feet, Yards per min or per second or total revolutions or length.

Signal Output features - A2109/LSR/002
Pulse Output facility - 5v Pulse output. Output via socket on rear of housing, supplied with 2 metre BNC output cable.
- Pulse output facility
- Tripod bush
- Signal output cable - 2 metres free ends
- Remote on/off via cable

The Pulse output facility The Pulse output models also have a camera tripod bush fitted as standard, this feature is ideal for hands free applications, for example, continuous monitoring speed of machines, test rig providing easy to set up speed check & recording facilities.
The pulse output must only be connected through approved equipment.

Also known as SKF TMRT 1Ex

  • Explosion-Proof Housing
  • Vertical display with 180° inversion capability
  • Includes calibration certificate
  • Memory holds last reading for 1 minute
Measuring Range3.0 - 99,999 rpm
0.3 - 1,500.0 Meters or Yards/min
(4,500 ft/min) or seconds
Resolution.001 rpm
Accuracy0.02% of reading ±digit
Optical Sensing Range2 - 80" / 50 - 2000mm
Update Time0.8 sec
Capture Mode0.1 Sec
Count0-99999 revs or length in linear
Time Interval0-99999 seconds (auto)
Memory HoldHolds last reading for 1 minute
On Target IndicatorYes
Housing MaterialHigh Flow ABS - Metalised
Batteries4xAAA supplied
Dimensions21 L x 4 W x 3.5 D - cm
Measuring WheelIncluded, 0.1 meter circumference
Weight (kit)0.4 Kg
Warranty1 year
Sensing Distance1 meter (39 inches)
Battery Life6 hours continuous (shorter when using rechargeable type
Display Update Rate0.8 seconds/update (0.1 sec for Max Value capture)
Complete Kit
The A2109 is supplied as a complete kit with the tachometer, reflective tape, contact adapter, calibration certificate, instruction manual, 4xAAA batteries all in a hard plastic carrying case.

Combination Contact Adapter/Surface speed & length Adapter Included.
ATEX Certification Click to downloadInstruction Manual Click to download
Sample NIST-Traceable Calibration Certificate Click to download
Buy Now
  Item Price Description  
Check the items you would like to purchase then click "Buy Now"
A2109/LSR$899.00Advent Laser Tachometer
A2109/LSR/002$999.00Advent Laser Tachometer with Pulse Output
205T$5.00Tachometer Reflective Tape, 1x7 Inch Strip - TAPE
205TS$5.00Reflective Tab Sheet, 35 1/2" x 1/2" Squares - TAB
65-29$15.00Reflective Tape, 1/2" x 5'
A2100/01$99.00Spare Contact Adapter for Compact Tachometers
 A2100/15 A2109 Cable BNC O/P (5M) - Please contact us for pricing and availability.
 A2100/33 20cm Contact Adapter for A2109 - Please contact us for pricing and availability.
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Electromatic is an independent distributor of Compact Instruments Limited products.
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