This logger sensor is based on a probe with two electrodes with known surface area and distance between them. A signal is supplied to the electrodes and by testing the signal behavior, the conductivity of the solution is calculated

The logger sensor has three ranges for displaying the solution conductivity:

• µS/cm – microsiemens per centimeter
• mg/L – milligram per liter
• ppm – parts per million

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide

The colorimeter measures transmittance and absorbance of red, orange, green and blue light components projected on a solution.

The colorimeter logger sensor has an opening for a special square solution cuvette. It turns on four different lights in known values and measures the received light that passes through the solution.

This sensor has two modes of operation: Absorbance and Transmitence. Note: The plastic tube (cuvette) must be put in a certain way inside the colorimeter. The cuvette has two rough sides. These sides should not be in the line of the light. Three cuvettes are supplied with the sensor.

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide

This logger sensor is based on an electromechanical reaction between CO₂ gas and the sensor.

The result of the electromechanical reaction is voltage, measured by the logger sensor. The measure units are ppm (parts of CO₂ per million of air).

Note: The sensor must be calibrated before every use according to the following simple procedure: connect the sensor to the PC through a USB module or a battery module. Wait for about 15 minutes to warm the sensor and press the pushbutton switch on the CO₂ logger sensor for 3 seconds. Preferably this calibration should be performed in open space. A bottle adapted to the sensor is supplied.

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide

The NeuLog chloride sensor can be used to measure the concentration of chloride ions (Cl^–) in aqueous samples. This measurement can be an indication of the salinity of water samples. The sensor can be used to study samples of drinking water with different degrees of chlorination.

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide

This sensor measures electrostatic charges. It can be seen as a highly sensitive electroscope indicating whether a charge is positive or negative. Other uses are: to explore the nature of static charge, to measure both charge and voltage, to measure charge by induction, quantify the charge on a capacitor or discover the charge distribution on a conducting sphere.

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide

The NeuLog calcium sensor enables measurements of ionic calcium (Ca^₂+) concentration in aqueous samples. This measurement is very important when evaluating water quality. It can also be used to determine calcium – magnesium by EDTA titration.

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide

The sensor measures the pressure in the cuff wrapped on the tested person’s arm.

Heartbeats affect the blood pressure. That is the reason for the difference between the systolic and diastolic pressure of the tested person.

The sensor has three ranges:

1. The average pressure in the air pillow in mm Hg. 2. The pressure beats in arbitrary units. 3. The sum of the two above signals. This increases sensibility for the required calculations.

The NeuLog software extracts the following from the blood pressure graph:

a) The systolic blood pressure
b) The diastolic blood pressure
c) The Mean Arterial Pressure (MAP) blood pressure
d) The heart beat rate

Specifications:

Experiment Duration: 1 second to 31 days.

Logger sensor Guide

This logger sensor measures atmospheric barometric pressure and can display data in four common units.

• kPa – kilopascal
• atm – atmospheres
• in Hg – inches of mercury
• mm Hg – millimeters of mercury

The sensor also offers an option to display the measured pressure values in terms of altitude (in meters).

Barometric pressure can be measured at sea level (1 atm) and also on mountains (lower than 1 atm).

Specifications:

Experiment Duration:1 second to 31 days.

Logger sensor Guide

Ammonium measurements can also be very relevant to study the nitrogen cycle in general and to relate this cycle to plants and algae.

This is a 3D (three dimensions) acceleration sensor which displays each dimension one at a time. It allows measuring the acceleration of moving bodies such as a body oscillating in a spring or in a moving vehicle.

Specifications:

Experiment Duration: 50 milliseconds to 31 days.

Logger sensor Guide