A2109 Series Intrinsically Safe Tachometers
 
Multifunction Optical/Contact Tachometer - Counters

These two Tachometers are fully featured including 5 digit LCD inverting display with legends for all functions and measurement parameters, selectable ranges for revs, metres, feet, yards per minute or per second. With additional features including maximum, average and minimum reading hold, last reading & recall, count revs or length & time modes.

Display Features
Vertical display
Inverting Mode
Large LCD

 
Special Features Capture Mode
Max/Min Captures max speed in 0.1 secs
Min/Max Holds min. reading during a measurement
Fast Timebase 0.1 seconds in Capture mode
Average Averages over last 8 readings

 
Optical System General Specification
Optical Range
Optical Angle
Light
50 - 1000mm
+/- 45°
LED
Speed range -
Resolution -
Accuracy -
Update -
Capture Mode -
Count -
Time interval -
Resolution -
Memory hold -
On target ind. -
Low Battery ind -
Contact Adapter -
Carrycase -
3 to 99,999 rpm and rps
max. 0.01 (auto)
0.05% +/- 1 digit
0.8 sec (0.1 sec in speed capture mode)
0.1sec
0-99999 revs metres yds, ft
0-99999 secs (auto)
0.01 seconds max.
Holds last reading 1 minute
Yes
Yes
Supplied
Supplied
Laser Model Contact Measurement
Optical Range
Optical Angle
Laser		 25 - 2000mm
+/- 80°
Class II		 With A2100/01 Adaptor fitted (supplied)
rpm, rps, Metres, Feet, Yards per min
second or total revolution or length.
 
Additional Information Signal Output
Pulse output facility to data logging equipment

Ex ii Class Intrinsically safe product - Zone 1 applications

IMPORTANT NOTE: These models must only be used with Duracell "Procell" batteries which are officially approved for this instrument. Use of other AA cells will invalidate I.S. Certification.

 Signal Output features - Models A2109/LSR/002 and A2109/LED/002
Pulse output - 5v NPN . Output via socket on rear of housing, supplied with 2 metre BNC output cable.
MUST only be used with approved I.S. Barrier equipment

These models have these additional features
• Remote on/off switching facility via cable connection
• Tripod mounting bush
 
Inverted examples of the A2109