This sensor can be used to study various kinds of motion. With six modes of operation, time, velocity or acceleration can be measured with one or two photo gates and associated timing cards, as well as showing pictorially the status (digital 1 or 0) of the voltage output of the photo gate as timing cards pass through it.

The modes of operation are selected by clicking a button on the software screen.

The measured values can be displayed in large numbers or in a table.

The sensor’s six modes of operation are described in the following picture:

1. Velocity with a single gate
2. Acceleration with a single gate
3. Acceleration with two gates
4. Velocity and Momentum with two gates
5. Delta between two gates
6. Velocities with a timing card

Logger sensor Guide

This sensor can be used to measure the static pH values of common liquids (water, milk, soft drinks, vinegar, etc.) as well as the changing values in titrations or experiments such as those looking at the effect of antacids.

The pH sensor is designed for long life in a variety of general purpose situations. Its sealed reference system and gel fill make it easy to use and maintain. With an epoxy body it is a durable electrode for use both in the laboratory and in the field.

Sensor Offset:

This sensor gives a fast response across the full pH range and can be calibrated with a pH = 7 standard buffer solution. After connecting the sensor to a power source (battery module or USB module and PC), insert the sensor into a pH = 7 buffer and press the sensor’s push button for about 3 seconds. The reading will be offset to 7.

Specifications:

Experiment Duration: 1 seconds to 31 days.

Logger sensor Guide

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