Pressure indicator is incorrect pressure indicator is incorrect Cause 1: pressure transmitter power supply is normal. Solution: If less than 12VDC, whether there is a large load should check circuit, the input impedance of the load pressure transmitter should be consistent with RL≤ ( Pressure transmitter power supply voltage -12V) / (0.02A) Ω Reason 2: The pressure reference value is necessarily correct. Solution: If the reference precision pressure gauge is low, you need the other for high precision pressure gauge. Reason 3: Consistent pressure indicating whether the pressure range of the instrument pressure transmitter range solutions: pressure indication and pressure range of the instrument must be consistent with the pressure transmitter range Reason 5: Pressure transmitter input impedance load should be consistent RL≤ (pressure transmitter power supply voltage -12V) / (0.02A) Ω Solution: If you do not comply, according to their different can take appropriate measures: such as increasing the supply voltage (but must be less than 36VDC), reduce load 6 other reasons: multi-point recorder did not record when the input is open; solution: If the open is: 1, can not be with other loads; 2, switch to other input impedance ≤250Ω recorder did not record the time. Cause 7: The corresponding device housing is grounded Solution: Device housing Grounding 8: Is the AC power and other power traces separate solutions: AC power supply and other power routed separately Reason 9: The pressure sensor is damaged, severe damage sometimes overload diaphragm. The solution: to be sent back to the manufacturer for repair. , BST6800-DP pressure transmitter principle capacitive pressure sensor, also known as capacitance diaphragm, it works by converting the displacement of the elastic element as a change in capacitance. To load the diaphragm as a movable plate capacitor, which fixed plate composed of a variable capacitor. When the measured change in pressure differential flow transmitter Yunnan installation, pressure diaphragm displacement and changing the distance between the plates Yunnan differential pressure flow transmitter direct, measuring the corresponding capacitance change, we can see the value of the measured pressure, The picture shows the two chambers concave spherical-shaped metal structure schematic view of the pressure-sensitive element glass insulating layer measured as a fixed electrode, intermediate clamped elastic flat diaphragm as a movable electrode, consisting of two capacitors. Entire diaphragm with diaphragm seal, full of silicone oil in its interior. Feel the pressure from the diaphragm of the two test role Yunnan DP flow transmitters, pressure transmission by silicone elastic diaphragm displacement, when the pressure difference is increased pressure differential pressure flow transmitter wholesale Yunnan, the movable plate close to the low end; on the contrary, the movable plate to close the high-pressure side. Changes in the distance between the capacitor plates, cause changes on both sides of the capacitor capacitance value. By measuring the capacitance change value, calculate the size of the measured pressure. Selection of differential pressure flow transmitter Yunnan | Yunnan DP flow transmitter | Sisson Sisson from Guangzhou Automation provides automation control equipment Limited. Guangzhou Sisson Automation Equipment Co. (www.sisenauto.com) strong, credible, in Guangzhou flow meter industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangzhou Sisson automation into the brilliant and you work for a better future!