Low voltage intelligent high temperature and high voltage capacitive level gauge for boiler level gauge

NegotiableUpdate on 01/20

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

(1) There is a protective cylinder inside the liquid level gauge cylinder, which can effectively prevent the impact of airflow and water flow on the sensor. At the same time, it can avoid measurement data fluctuations caused by severe water agitation. At the top of the $r $n (2) sensor, there is a soda water separation device to prevent water from hanging on the sensor surface and causing measurement errors. (3) The sealing part has a piston type structure, and the greater the pressure, the tighter the seal. $r $n (4) inverted structure, firstly, keeps the electrical part in a low-temperature zone, which can effectively extend the service life of the electrical appliance; Secondly, keep the sealing area in a low-temperature zone to ensure long-term reliability of the seal.

Product Details

Basic measurement principle:The protective tube and probe inside the measuring cylinder form a coaxial capacitor, with a gap between themWater and steam, as the dielectric of the capacitor, enter this gap. Due to the significant difference in dielectric constants between water and steam, the level of water changes the capacitanceThe capacitance of the capacitor directly reflects the change in liquid level height. Process this change through circuits and programs,Output 4-20mA data corresponding to the liquid level.

Automatic calibration principle:This product uses a combination of 5 sets of capacitive sensors: the metal measuring cylinder of the liquid level gauge has a * * edge sleeve inside,There are 5 metal probes distributed from bottom to top inside the insulation sleeve, which are connected to the circuit board with 5 leads respectivelyThe measuring cylinder consists of 5 sets of capacitive sensors. The middle three groups of five capacitive sensors are distributed between the vapor phase port and the liquid phase port, participating in the measurementMeasure and automatically compensate for changes in water and steam parameters. Two sets of capacitive sensors are located at the upper part of the gas phase port and the lower part of the liquid phase port, respectively,Participate in updating the zero and full point data of the liquid level gauge, replacing external instructions to achieve automatic calibration.

Measures to reduce the liquid level difference between the level gauge and the boiler body:There is a steam condensation chamber on the upper part of the measuring cylinder of the liquid level gauge, and when steam flows from the vapor phaseThe inlet enters the condensation chamber to produce condensed water, which releases heat to heat the water at the lower part of the measuring cylinder. The water at the lower part flows back to the boiler body from the liquid phase outlet,By continuously cycling in this way, the temperature and density of the liquid level gauge and the boiler body water are always kept consistent, thereby maintaining a consistent liquid level height and ensuringAccurate measurement of obstacles.