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Name
Sensor
Temperature measuring range
Humidity measuring range
Sensor
Connection
Cable length
Tube material
Product no.: SHOP 0381 0004-03
This humidity sensor SHS-A4L is a resistive dew sensor with miniaturized dimensions for detecting the beginning of condensation. The sensor is pre-mounted on an aluminium plate for an easy installation.
15,60 €*
1 pc 15,60 €
5 pcs 14,82 €
10 pcs 14,04 €
Details
Product no.: SHOP 0381 0006
Precision, reliability and long-term stability are the main characteristics for our digital humidity and temperature sensors with I²C interface.
13,93 €*
1 pc 13,93 €
5 pcs 13,23 €
10 pcs 12,54 €
Details
Product no.: SHOP 0381 0015
Precision, reliability and long-term stability are the main characteristics for our digital humidity and temperature sensors with I²C interface.
33,20 €*
1 pc 33,20 €
5 pcs 31,54 €
10 pcs 29,87 €
Details
Product no.: SHOP 0381 0017
Precision, reliability and long-term stability are the main characteristics for our digital humidity and temperature sensors with I²C interface.
24,03 €*
1 pc 24,03 €
5 pcs 22,82 €
10 pcs 21,63 €
Details
Product no.: SHOP 0381 0018
Precision, reliability and long-term stability are the main characteristics for our digital humidity and temperature sensors with I²C interface.
24,61 €*
1 pc 24,61 €
5 pcs 23,38 €
10 pcs 22,15 €
Details
Product no.: SHOP 0381 0939
Precision, reliability and long-term stability are the main characteristics for our digital humidity and temperature sensors with I²C interface.
55,42 €*
1 pc 55,42 €
5 pcs 52,65 €
10 pcs 49,88 €
Details
Product no.: SHOP 0555 1506-01
This humidity and temperature sensor with a 4-pin industrial connector M12 consists of a high-quality diecast housing and is particularly suitable for extreme operating conditions in industrial applications.
394,50 €*
1 pc 394,50 €
3 pcs 385,30 €
10 pcs 368,50 €
Details
Product no.: SHOP 0557 0002M
The universal sensor switching module has been developped for humidity measuring applications and is suitable for various electrolytic sensors as a two-point controller.
from  26,90 €*
Details
Product no.: SHOP 0557 0005-02
The universal two-point controller is suitable for various applications due its easy handling and robust construction. However you can also use all customary industrial probes with current or voltage output with this unit.
60,49 €*
1 pc 60,49 €
3 pcs 57,46 €
10 pcs 54,45 €
Details
Product no.: SHOP 0557 0005M
The universal two-point PCB controller is suitable for various applications due to its easy handling and robust construction. It can process most industry probes with current, voltage, impedance or switching output.
43,45 €*
Details
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Humidity

Humidity refers to the water content in air or another substance. Air is composed of:

        • Nitrogen 78 %

        • Oxygen 21 %

        • Argon 0,9 %

        • Carbon dioxide 0,04 %

        • Water vapor 0,04 %


Humidity content

As with temperature, humans have a sense of moist or dry air. However, unlike estimating air temperature, it is much more difficult to assign an approximate value to the moisture content of air. Among other reasons, this is because air humidity is less common in everyday use.


Air Quality

Air quality contributes significantly to the quality of life. If the quality of the air is not good, for example, because it contains too little oxygen, we quickly become tired, get headaches and feel listless. One solution in this case is to open the windows and let fresh air into the room. However, this solution is not so easy to implement in every situation and environment. Also, air in itself is a complex matter, where simply opening the window does not always help.

Like any other substance, air has a limited capacity to absorb water. This limit is called saturation. Below saturation, moist air cannot be easily distinguished from dry air; above saturation, the excess water precipitates as mist in the form of fine water droplets (condensate).


Absolute humidity

The amount of water absorbed at saturation is temperature-dependent and increases strongly progressively with it. At 0°C, saturation is 4.8 grams of water/volume of moist air [unit: g/m3], at 20°C it is already 17.3 grams of water/volume of moist air [unit: g/m3]. The absolute humidity [fabs] is thus calculated from the following formula:

Weight of water contained in air [mass of water] / volume of air considered [volume of humid air].


Relative humidity

The term relative humidity is used to describe the following ratio: actual absolute humidity [fabs] to the maximum possible absolute humidity [fmax] (in a given room at the same temperature).Relative humidity is defined as the absolute water content in the air in relation to the water saturation content of the air. This is about 15 g/kg (20°C air temperature) and increases exponentially with temperature.

On average, the air humidity is 30% - 55% (winter/summer). Inadequate ventilation can cause water to accumulate on/in the walls. At high humidity (>70%) molds develop. Especially in poorly ventilated areas (corners of rooms) high humidity can develop locally. Per hour, humans release 30g - 60g of water into the environment during light activity.


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B+B offers you an innovative and a wide range of products for several applications in the temperature, humidity and pressure measurement.

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