Posted in Secondary Data Loggers


           Datalogger or Meter                      2 channel Oscilloscope               Advanced Physics Timer


  • Use remotely or connected to a computer/iPad tablet.
  • Works with PC,Mac,iPad using USB or Bluetooth
  • 4 sensor sockets that work with over 50 sensors
  • Save experiments to observers internal memory
  • Runs from 2 AA batteries so it does not need to be charged up before using

Observer user manual 

Observer quick function guide 

Meter Logging

  • Autolog – just press “Start” to start logging and “Stop” to stop
  • Set Log Rate – set the experiment duration and sample rate
  • Snapshot – store the sensor readings every time the “Store” button is pressed
  • Triggered – starts logging when an event happens, such as dropping a magnet through a coil

Recommended accessories

    • Light Level D100159
    • Temperature D100047
    • Sound Level D100060


Using either Single, Double or Picket Fence interrupt cards

  • Time at A
  • Time at A and B
  • Time from A to B
  • Time at A, from A to B, and B
  • Speed at A
  • Speed at A and B
  • Speed from A to B
  • Acceleration at A
  • Simple Harmonic Motion
  • Stopwatch / Timer

Recommended accessories

    • Light Gate Set D100054 contents

2 x Light Gate Vision, with visible light beam
2 x Mounting rod 120mm x 10mm diameter
2 x Mounting Screws

    • Timing card set D101130 contents

1 x single,
1 x double
1 x picket fence

    • Pressure Mat Set D100094 contents

2 x Pressure mat's


  • 1 or 2 Channel
  • Time base 20us to 100ms / Div
  • Y scale auto zooms to make full use of the display
  • Hold and Save waveform
  • ADC 12 bit resolution
  • Auto triggers to waveform 

Recommended accessories

    • Sound Wave x 2 D100060
    • Light Level D100159 Smart Eye sensor
    • Voltage measurement set D100045 (+/- 25v lead, 15 piece test lead set)
    • +/- 1250mv (Redox adapter) D100139
    • Pulse Monitor D100092


  • Power - 2 x AA or USB when connected
  • Display - low power backlit 128 x 64 monochrome LCD, designed for indoor and outdoor use
  • Connectivity – USB and Low power Bluetooth
  • Sensor Socket – 4 x microsense 

Main features include:

  • One touch logging
  • Over 50 Microsense® sensors and adapters available
  • Super low power - 2 x standard AA Alkaline batteries will last for months, always ready to use
  • Time, Speed, Acceleration and SHM Timing functions built in
  • Splash proof face keeps it safe from lab spills or rain showers
  • Stores up to 8000 readings per sensor per experiment
  • Logs for more than 250 days
  • USB connectivity to PC or MAC computers
  • Smart Low Energy Bluetooth wireless built in for iPad Mini or iPad 3 and above
  • Software for iPad, Windows and MAC included
  • Multi packs supplied with Gratnells trays

For information on SensorLab for iPad, see here