1. Possible Cause
a Check the power cord, fuse, function selector switch, and signal cable for open or poor contact
b Check the internal printing plate of the turbine flowmeter display, contact parts, etc. for poor contact
c Check the detection coil
d Check the internal fault of the sensor. All the above 1-3 checks confirm that the fault is normal or has been eliminated, but there is still a fault phenomenon, indicating that the fault is inside the sensor flow channel. You can check whether the impeller touches the inner wall of the sensor, whether there is any foreign matter stuck, the shaft and Bearings have no debris stuck or broken
2. Solution
a Use an ohmmeter to troubleshoot the point of failure
b Printing board failure check can be replaced by the "alternate version" method, replace the fault board and then carefully check
c Do the position mark of the detection coil on the sensor body, unscrew the detection head, and use the iron piece to move quickly under the detection head. If the number of counters does not increase, check the coil for disconnection and solder joint de-soldering.
d Remove foreign matter, and clean or replace the damaged parts. After recovery, blow the air or hand the impeller. There should be no friction. After replacing the bearings and other parts, re-verify and obtain a new meter factor.
Symptom 2: No flow reduction operation, but the flow display is gradually decreasing
Possible cause
a Whether the filter is clogged, if the filter differential pressure increases, indicating that the debris has been blocked
b The valve on the flow sensor pipe section has a loose spool and the valve opening is automatically reduced.
c The sensor impeller is obstructed by debris or the bearing gap enters the foreign object, the resistance increases and the deceleration slows down.
2. Solution
a Eliminate the filter
b Check whether the valve handwheel is effectively adjusted, and then repair or replace it after confirmation.
c Remove sensor removal and recalibrate if necessary
Fault phenomenon 3: The fluid does not flow, the flow rate display is not zero, or the display value is unstable.
Possible cause
a Transmission line shield is poorly grounded, and external interference signals are mixed into the input of the display.
b The pipe vibrates and the impeller vibrates, causing false signals
c The shut-off valve is closed due to poor leakage, in fact, the meter shows the amount of leakage
d Interference between the internal circuit boards of the display or the deterioration of electronic components
2. Solution
a Check the shield and show that the instrument terminals are well grounded
b Reinforce the pipeline or install a bracket before and after the sensor to prevent vibration
c Repair or replace the valve
d Take “short circuit method†or check item by item to judge the source of interference and find the point of failure
Symptom 4: The difference between the display value and the empirical evaluation value is significant
Possible cause
a The internal fault of the sensor flow channel is corroded by fluid, the wear is serious, the debris hinders the rotation of the impeller, the meter coefficient changes the blade is corroded or impacted, the top end deforms, affecting the normal cutting magnetic line, the detection coil output signal is abnormal, the meter coefficient changes: fluid If the temperature is too high or too low, the shaft and the bearing expand or contract. If the gap changes too much, the impeller will rotate abnormally and the meter factor will change.
b Sensor back pressure is insufficient, air pockets appear, affecting impeller rotation
c. Reasons for pipeline flow, such as the reverse flow bypass valve is not closed when there is no check valve, and there is a large flow velocity distribution distortion upstream of the leakage sensor: (such as caused by the upstream valve not fully open) or the occurrence of pulsating liquid Temperature-induced viscosity change, etc.
d turbine flowmeter display internal fault
e The permanent magnet material component in the detector is analyzed, and the magnetic attenuation to a certain extent will also affect the measured value.
f The actual flow through the sensor has exceeded the flow range specified by the sensor
2. Solution
Ad finds the cause of the failure and looks for countermeasures for specific reasons
e Replace the loss of magnetic components
f Replace the appropriate sensor
Snoworld screw type Automatic Ice Storage can be used for small ice quantity storage. It is designed for food and aquatic processing and medical field, where require high sanitary requirement. It has several features.
1. Factory pre-assembled module, less time and labor for installation and commission.
2. Unique screw type ice delivery structure, which guarantees smooth ice transmit and no blocking.
3. Stainless steel material for all interior parts. No mechanical rotation abrasion and contamination. Few malfunction and long use life.
Screw Type Automatic Ice Storage
Insulated Ice Bin,Screw Ice Storage,Reliable Ice Storage,Stainless Steel Ice Storage
Fujian Snowman Trade Co., Ltd. , https://www.sinoicemachine.com