NIVELCO EasyTREK SCA-300 Series, Руководство по программированию

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20 EasyTREK Compact Ultrasonic Level Transmitters
P40= 17 Special Trapezoidal (4:1) weir
0.0018 < Q[m 3 /s] < 50
0.3 < P42[m] < 10
0.1 < h[m] < 2
Q[m
3 /s]= 1.866*P42*h 1.5
Accuracy: ± 3%
1
4
P46
P04
h
P42
P40= 18 V-notch weir
0.0002 < Q[m
3
/s] < 1
20 < P42[°] < 100
0.05 < h[m] < 1
Q[m
3
/s]= 1.320*tg(P42/2)*h
2.47
Accuracy:
±
3%
h
P46
P42
P04
P40= 19 THOMSON (90°-notch) weir
0.0002 < Q[m 3 /s] < 1
0.05 < h[m] < 1
Q[m
3
/s]= 1.320*h
2.47
Accuracy:
±
3%
P46
P04
h
90
P40= 20 Circular weir
0.0003 < Q[m 3 /s] < 25
0.02 < h[m] < 2
Q[m
3
/s]= m*b*D
2.5
m= 0.555+0.418h/P41+(P41/(0.11*h))
Accuracy:
± 5%
P46
P04
h
P41
P46
:
- - - - Distance between transducer face and level of Q=0
P46
is the distance between the transducer face and the liquid at which the flow starts (Q=0). (See figures)
During setting of P46 should be P06=0
FACTORY DEFAULT:
0