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| Add Time： | 2016-08-22 09:05:48 |
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Product description:
Working principle
BIN-DETECTOR® position controller is the use of mobile phase detection technology to detect the measured in the bin without material position. A quartz electronic oscillator in the electronic circuit of the controller generates a fixed frequency high frequency sine wave signal within a radio emission spectral range. The high frequency oscillation signal is divided into two ways, one way directly to the detection pole, and the other through a voltage follower and then sent to the anti adhesion protection electrode. The phase detector compares the feedback signal from the detecting rod with the basic signal. Because the dielectric constant of any material to be measured and the conductivity and the air compared to the total number of differences, so as to detect great contact material, the detection signal (including capacitive reactance and impedance reactance) will change, and cause changes in the detection phase detection signal on great changes; therefore, the phase the detection signal and the reference signal of the differential changes, the phase difference changes after the treatment, the driving output circuit, an alarm signal. The reactance thereciprocal admittance, frequency detection signal in radio emission spectrum, so we put this kind of position controller called RF admittance level controller, and RF is the English transliteration of the radio frequency “ Radio Frequency” ".
Radio frequency level controller is how to overcome the influence of adhesion layer on the detection process? As already mentioned, a high-frequency oscillation signal directly to the detecting electrode bar, the other way through a voltage follower to prevent adhesion protection due to electrode, voltage follower 1:1 is a voltage amplifier, so the detection the signal electrode rod and protection on the comparison of the size, the phase is the same, but the two is mutually independent; the former in the detection, which does not participate in the examination. When the material adhering to the probe, a capacitor is formed between the wall material to be measured in the bin protecting electrode and the protection of high frequency signal on the electrode of the capacitor will be saturated; the capacitance saturation, potential protection around the electrode material on the electrode potential is equal to the protection, it is equal to the great potential of detection, so the detection frequency detection signal on a stick through the material adhesion layer flows to the silo wall — — because the current flow must have potential difference. RF Series RF admittance level controller uses the principle of equal potential to eliminate the influence of material adhesion layer on the detection process. Only when the probe is exposed to a large number of real grounding materials (either dry material, or liquid materials), will signal detection stick around the saturated zone to the silo wall, thereby indicating material existence, issued a warning signal.
Characteristic
BIN-DETECTOR® the two step calibration and online test function of the material level controller series will save you a lot of time and money. The high quality wave soldering solid state electronic circuit and high pressure injection molding has the anti adhesion protective electrode probe is the RF series of material level controller manufacturing features, they make the controller more reliable. The main engineering and technical personnel of Shanghai Zhongyi Environmental Protection Technology Co. Ltd has 20 years of experience in material control engineering and manufacturing technology, can ensure that you get is contemporary the most technologically advanced level controller.
Online test function
Online testing process through a Test button to complete, this feature will allow you to greatly reduce the material overflow and due to the spread of toxic and hazardous materials spill caused by a variety of non
Necessary trouble. Using this advanced technology makes you in dangerous situations without removing the instrument, can carry out online simulation test of RF installed in the silo on a safety controller.
High quality structure
BIN-DETECTOR® all the standard shell are used Aluminum Alloy die pressing, spraying the surface of polyester paint. RF series - 60 ~ ring probe for 260 C
Environment, safe, firm and reliable. The instrument electronic circuit uses the two-sided printed circuit board, and uses the wave crest welding, each instrument before the factory has passed the strict test.
Other features of the RF series
Two years warranty period
Applicable to the detection of particles, fly ash, conductive (non-conductive) liquid, viscous materials and other occasions
DIP sensitivity switch and delay time setting switch
Probe can be directly extended in the field
Separating instrument suitable for high temperature and vibration
Probe profile
BIN-DETECTOR® has a series of probes made of various materials, which can meet the needs of most of the detection process. Polyphenylene sulfide (Ryton) and 316 stainless steel are commonly used materials. Ryton is one of the most durable engineering plastics with excellent corrosion resistance. If the Ryton and stainless steel still can not meet the measurement requirements, can be used to coat Kynar sheath probe.
RF probe installed in the tank top, the maximum end can be lengthened to 1.5 meters, if longer, can be used for root extension tube. The RF8000 series rope probe maximum length up to 13.5 meters.
Probe attachment
Some of these accessories are installed on the probe, can improve the sensitivity to detect low dielectric constant material; some installed in the probe, can increase the length of the probe, when the probe is not long enough to use.
