Pt100 Table

With worldwide concern about global climate change using a data logger equipment to monitor a wide range of environmental factors such as temperature, solar radiation, precipitation and water table levels is becoming more widespread.

Many modern data logger models offer long operation on internal batteries coupled with multi channel universal input capability. This makes them ideal for use in the field with a variety of environmental sensors. The basic inputs required for recording data from these sensors are listed below:

The input for temperature sensor Logger
The three main types of temperature sensors are thermocouples, PT100 sensors and thermistors. Thermocouples require a data logger with high resolution and cold junction compensation. Thermocouples do not require external power making them ideal for installations with a datalogger in remote locations. Thermistors are inexpensive and accurate, but are not linear if the data logger needs to look internally to the table to read these precision devices. PT100 sensors are very accurate, but as they are three aircraft models over many low cost data recorder is not compatible.

Data Logger input rain gauge
A rain gauge is a barrel shaped device with a rain collector. The collector funnels rainwater to a tipping bucket sensor. When the bucket fills up it tips, triggering a pulse from a reed switch to measure 0.2 mm of rain. A data logger must have a pulse input to work with a rain gauge.

Data Logger Inputs of solar radiation sensors
While many models of low cost data recorder may work with temperature sensors and rain gauges, the output voltage very low solar radiation sensors can be a problem. With a typical range of 0-20 mV to represent a range of 0000-2000 WM2 data logger needs a measuring range low and high resolution to take significant steps.

Data Logger Inputs for sensors Water Level
Water level sensors are generally types of submersible pressure sensors or ultrasonic non-contact. Like most pressure sensors require excitation depth data logger must be able to power the sensor. Many models datalogger have a five volt supply available for this type of sensor. For use with ultrasonic level sensors the data logger must be capable of powering a 4-20mA loop.

Input data logger for wind sensors
They are available with voltage, mA and serial outputs. While most types of data logger can handle the voltage and current few can read the serial devices. A new generation of models Omni Instruments data recorder supports serial protocols used by the sensors before the wind.

Thus, it can be seen that for applications for environmental monitoring, it is important to choose a data logger with a capacity of multi-channel input that is able to support a wide range of sensor inputs

Omni Instruments many years of experience providing equipment data logger for these applications and can also provide sensors compatible.