Type of meet an emergency measures principle of force transducer job, calibration and use maintain detailed solution
[introduction] type of meet an emergency measures force transducer is by elastomer, meet an emergency piece, adhesive, defend the part such as circuitry of coating, compensation is comprised, its meet an emergency delivers route is: Meet an emergency of → of elastomer → adhesive piece → of overburden of sensitive bar → defends coating, form to have not at meet an emergency piece the more complex system of itself. If stickup the meet an emergency on elastomer piece of short duration calls meet an emergency piece device (Strain Gage Installation) , its type construction is shown like plan institute.
Typical meet an emergency piece the profile of device:
Type of meet an emergency measures the principle of force transducer
The principle analysis that type of meet an emergency measures force transducer measures force transducer to be with type of CYL meet an emergency exemple.
Type of CYL meet an emergency measures force transducer is to use principle of resistor meet an emergency to form, stickup the meet an emergency of high-grade foil type on sensor elastomer piece comprise complete bridge circuit. Should get when load action, elastomer generation is out of shape, meet an emergency piece also feel strain accordingly, make thereby bridge overbalance, output the telegraphic name that becomes direct ratio with active force size.
To reduce the temperature effect to sensor function, temperature raised in bridge circuitry 0 bleach compensation resistor T, temperature sensitivity compensates resistor E and balance resistor D, next graphs survey plan of principle of system of force transducer circuit for type of CYL meet an emergency:
Type of meet an emergency measures the parameter of force transducer
Model: WPL803
Span: 0.5, 1, 1.5, 2, 2.5, 3.5 (T)
Accuracy class: C2, C3
Integrated error: (%F.S) 0.03/0.02
Sensitivity: 3.0±0.03 (MV/V)
Nonlinear: 0.03, 0.02 (%F.S)
Lag: 0.03, 0.02 (%F.S)
Repeatability: 0.02, 0.01 (%F.S)
Creep: 0.03, 0.02 (%F.S/30min)
Zero output: ±1 (%F.S)
Input impedance: 350±3 (Ω )
Output impedance: 350±10 (Ω )
Insulation resistance: ≥5000 (100VDC) (MΩ )
Incentive voltage: 9——12 (VDC)
Temperature compensates limits: – 10 ——+ 40 (℃ )
Use temperature limits: – 20 ——+ 55 (℃ )
Temperature affected at 0 o’clock: 0.02 (%F.S/10 ℃ )
Sensitivity temperature affects: 0.02 (%F.S/10 ℃ )
Safe overload limits: 150 (%F.S)
Ultimate overload limits: 200 (%F.S)
Defend grade IP67/IP68
Cable: RWP4×12-3m of cable of 4 core screen
Wiring method: Input (power source) + : Gules; Input (power source) – : Black; Output (signal) + : Green; Output (signal) – : White
Type of meet an emergency measures the use of force transducer to maintain
The use that type of meet an emergency measures force transducer and maintain should be worth to pay close attention to, it is below measure force transducer to be with type of CYL meet an emergency exemple will undertake an analysis to its.
Calibration of 1. static state:
Type of CYL meet an emergency measures force transducer precision taller, need to use standard power source fixed calibration, general 6 months advisable, calibration presses graph:
2. sensor is measured or when calibration, need electrify warm-up 15min, next preload 3. Answer for stability of bridge dc regulated power supply not under 0.01% .
3. sensor and digital volmeter, voltage plan, appearance of all sorts of the appearance that measure power, meet an emergency and recorder deserve to use, make the measurement of force and record. In far be apart from afore-mentioned each link when measuring to all require ground contact, join cable shortens as far as possible and secure, be far from noise source.
4. sensor passes plug join with the power source that offer the bridge and 2 appearance. Next graphs are hookup.
5. sensor span chooses to suggest to press rated load 80% choose, 20% what make the floor level value that uses span should be more than rated load as far as possible, if need paralell connection of a few sensor to use (like balance of big tonnage electron) can press type chooses:
G=P/N
In type: P- electron level is specified total load. N- paralell connection uses sensor several. Span of G- individual sensor
If press,go up type chooses span G, not be inside series norms, can choose stand by this span norms. Sensor has the overload capacity of 50% , but full span does not exceed as far as possible when using.
When 6. sensor is not used, should deposit 10——35 ℃ is in temperature, relative humidity is more than 85% , without acerbity, alkaline and without caustic gas storeroom inside.