This sensor can be used to make measurements of the level of free oxygen in air or dissolved oxygen in water.

The free oxygen in air mode is used to measure changes in oxygen levels during combustion or in reactions that produce oxygen (hydrogen peroxide decomposition). The dissolved and free oxygen modes are very useful in the study of photosynthesis.

The oxygen sensor is designed for use both in the school laboratory and in the field. It employs easy-to-use polarographic (Clark) technology and replaceable membranes are available for it. The electrode itself is constructed of Delrin® for durability.

With its integral thermistor, it provides dependable temperature-compensated measurements. The thermistor is housed in stainless steel and sealed on the electrode’s outer wall providing fast, accurate readings.

Specifications:

Experiment Duration: 1 seconds to 31 days.

Logger sensor Guide

This is a very sensitive magnetic fields sensor. It can measure a very low level of magnetic fields such as the magnetic field of Earth.

The logger sensor measures the magnetic fields in milli Tesla (mT).

Specifications:

Experiment Duration: 50 milliseconds to 31 days.

Logger sensor Guide

This sensor is very versatile with applications in many areas of the natural sciences. It can be used to study photosynthesis in biology, light-emitting chemical reactions in chemistry, the effect of changing voltage on a light-bulb’s output in physics and more.

This sensor measures illumination with three ranges; it can be used in low light environments such as in a classroom, or high light environments as in daylight outdoors.

With both fast and slow modes, it can be used to measure fast light changes such as those produced by light bulbs connected to an AC supply, as well as the almost steady levels outside on a sunny day.

The light sensor in located in a plastic box just behind an access hole.

Specifications:

Experiment Duration: 50 milliseconds to 31 days.

Logger sensor Guide

This logger sensor measures temperature remotely using an infra-red high accurate sensor. It is very useful when access to the sample is either difficult or dangerous.

Specifications:

Experiment Duration: 1 seconds to 31 days.

Logger sensor Guide

This sensor can be used to monitor and compare pulse rates under various exercise and rest conditions. Additionally, it can show changes of blood volume/flow in the finger or ear lobe with time.

The sensor has two modes of operation: measuring the BPM (Beats per Minute) of the heart rate or displaying the analog arbitrary value of the measured signal.

The electrodes are both plethysmograph-based. The sensors consist of an infrared LED transmitter and a matched infrared phototransistor receiver.

For best results, the sensor should be kept away from direct sunlight and high intensity lights. The student whose pulse is being measured should be still without moving as much as possible.

Specifications (BPM stands for beats per minute):

Experiment Duration: 1 seconds to 31 days.

Logger sensor Guide

This sensor comes with a hand held unit with a built in strain gauge. The sensor measures the pressing force on the hand held unit.

Specifications:

Experiment Duration: 1 seconds to 31 days.

Logger sensor Guide

The Galvanic Skin Response (GSR) logger sensor measures the conductivity of our skin, especially of our fingers.

The conductivity of our skin changes according to unconscious emotion effects such as sudden noise, smell, touch, pain or view.

This sensor has two ranges: conductivity in microsiemens and arbitrary numbers.

Specifications:

Experiment Duration: 1 seconds to 31 days.

Logger sensor Guide

This module is in fact a weight scale designed for a multi range of purposes. Simply lay a heavy weight on its surface, or activate a forceful pressure against it (like a bouncing ball), and the logger sensor will measure it. But that’s not all, once a special set of handles are attached, it can also measure pull pressure rather than just weights and presses.

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide