Optical speed sensor with analogue output
      VLS/DA1


      Overview:
      The new VLS/DA1 optical sensor with integral digital/analogue convertor, is designed for datalogging applications and where general speed monitoring of machines is required speed sensor VLS/DA1 (eg. remote tachometers), as it is particularly useful for monitoring and recording speed data. The VLS/DA1 is in fact designed for use with datalogging and any conditioning monitoring equipment. Special configurations are available to suit clients requirements, as we specialise in providing OEM versions customised to clients specific needs. Each speed sensor is equipped with a green led light confirming normal operation and correct alignement of light beam as this indeed will simplify speed sensor installation. Visible light model operates up to 1 metre; the laser light optional speed sensors operates up to 2 metre. The VLS/DA1/LSR laser version is powered from nominally 7 up to 15 Vdc. The visible light model operates from 5 Vdc. The standard analogue output is 0 to 4 Vdc for 0 to 4,000 rpm or 40,000 rpm which is selected externally via connection links.  Special custom calibrations are possible to order but still with max analogue output limited up to 4 Vdc.
       

      Main product features:
      - rugged glass filled nylon housing
      - linear voltage/speed output
      - easy installation (mounting brackets available)
      - 'On Target' indicator as standard
      - rapid response to speed changes
       

      Technical specifications:
      - optical working range: from 25 to 1000 mm (up to 2000 mm with laser)
      - optical angle: ±45° (±80° with laser model)
      - light sources: minilamp or red spot laser (class II)
      - speed ranges ranges:  1st  as from 20 to 4,000 rpm
                                            2nd as from 20 to 40,000 rpm
      - lens system: double lens reflex
      - analogue output: 0 to 4 Vdc (both ranges)
      - accuracy: ±0.75% FSD
      - resolution: ±5 rpm
      - output update rate: 100 ms or time between pulses, whichever is longer
      - on target indicator: standard green LED
      - power requirements: 7 to 15 Vdc (laser model); 5 V dc (non-laser model)
      - connections: 4 core cable 1 m long
       

      Speed sensor VLS/DA1 (dimensions are in mm)
      speed sensor VLS/DA1
       

      Speed sensor options and accessories:
      A range of of mounting devices is available for use with VLS/DA1 speed sensors, as also special version with pulse output signal. Below a basic list of available accessories:
      - short focus lens for high speed;
      - brackets;
      - clamps;
      - small shafts.
      A contact adaptor capable to convert the optical function into direct shaft contactor for both rpm and linear speed measurement in metres/min is also available, but only for simple light minilamp version (not for laser version).