Measuring instrument, system and method for measuring the mass concentration of dust particles
A system for measuring the mass concentration of dust particles includes data transfer device with dust particles mass concentration meter located inside the device. The meter includes a housing of the meter, a printed circuit board with a microcontroller, at least two dust sensors and output interface of the meter connected to them. The data transfer device additionally includes a heating element and a fan, which are electrically connected to the microcontroller, at least one inlet channel connected to the dust sensors, at least one outlet channel and at least one inlet stream temperature sensor. A method for measuring the mass concentration of dust is also provided.
1. A dust particles mass concentration meter, including a meter housing, a printed circuit board with a microcontroller, at least two dust sensors and the meter output interface connected to the at least two dust sensors, wherein said dust particles mass concentration meter additionally comprises:
a heating element and a heating element fan, which are electrically connected to the microcontroller, the heating element and the heating element fan are independent from the least two dust sensors, thereby the at least two dust sensors measure a mass concentration of dust particles when the heating element and the heating element fan are not engaged;
at least one inlet channel connected to dust sensors, the at least one inlet channel is positioned outside the meter housing;
at least one outlet channel, the at least one outlet channel is positioned outside the meter housing; and
at least one inlet stream temperature sensor,
wherein the heating element and the heating element fan are positioned within the meter housing and outside the inlet channel and the outlet channel, and the heating element fan is configured to circulate air heated by the heating element within the meter housing thereby maintaining an optimal temperature within the meter housing for measuring a mass concentration of dust particles;
wherein the meter housing is provided with a thermal insulation; and
wherein the microcontroller uses one dust sensor of the at least two dust sensors for measuring the mass concentration of dust particles, the one dust sensor measuring the mass concentration of dust particles performed measuring fewer times than other at least two dust sensors.
2. The dust particles mass concentration meter according to claim 1 , wherein said meter is equipped with at least two inlet channels, at least two outlet channels and at least two inlet stream temperature sensors.
3. The dust particles mass concentration meter according to claim 1 , wherein the dust sensors are equipped with nephelometers.
4. The dust particles mass concentration meter according to claim 1 , wherein an inlet opening of the inlet channel and an outlet opening of the outlet channel are equipped with filters.
5. The dust particles mass concentration meter according to claim 1 , wherein the outlet channel is equipped with at least one sensor of the temperature of an outlet stream.
6. The dust particles mass concentration meter according to claim 1 , wherein the dust particles mass concentration meter further comprises ambient air temperature sensors, humidity sensors and atmospheric pressure sensors.