DFE TRUETENSION TA1 Посібник із швидкого старту - Сторінка 7
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CALIBRATION AND ZERO continued...
1. ZERO: Ensure nothing is hanging on or pressing on the transducer roll (including the
calibration rope). Press the ZERO pushbutton on the unit front panel for at least 1
second. The unit will automatically adjust and store the tension-zero value one second
after the button is pressed. The unit will rapid flash the green status LED to indicate
the zero has been stored. Release the button. The Output1 will read 0 VDC and Output2
will read 4 mA.
2. CALIBRATION: During the calibration the transducer(s) should be loaded. Fasten
one end of the rope in the machine and thread the other end around the transducer
roll in exactly the same path the web will take. Be sure the rope does not pass
around any driven rolls, drag bars, or anything else that can affect tension. Ideally
the rope should hit an idler roll immediately before and after the tension sensing roll.
It does not have to pass over any other rollers once these three are strung. Attach
the weight to the free end of the rope as shown in Figure 10. The weight should not
touch anything. Wait for the weight to stop swinging.
To calibrate at 10% :
Push and Hold the Cal Button (About 1 Second) until confirmation blinks, then release
the button. The output will read 10% of full scale after calibration.
To calibrate at 25% :
Push and Hold Cal Button (About 10 Seconds) until you see two sets of confirmation
blinks. Then release the button. The output will read 25% of full scale after calibration.
If no blink, inadequate Cal weight used.