Magnetrol E3 Modulevel - Wet Calibration Guidelines (Continued); Interface Calibration with Water; Interface Calibration with Different Liquids

13
WET CALIBRATION – Guidelines
INTERFACE MEASUREMENT: using water for calibration
a
ir/gases
set 4 mA
water
Calibrate 4 mA/0 % level
Immerge displacer for 80 % in water
Press Enter = start calibration.
Press Up + Enter = lock 4 mA value.
air/gases
s
et 20 mA
water
Calibrate 20 mA/100 % level:
Immerge displacer for 100 % in water
Press Enter = start calibration
Press Up + Enter = lock 20 mA value.
Lower liquid is water with S.G. = 1.0 kg/dm
3
Upper liquid with S.G. = 0.80 kg/dm
3
NOTE: in case the liquid would be 0.78 kg/dm
³
, immerge the displacer only for 78% instead of 80% as per below
example.
Lower liquid with S.G. = 1.2 kg/dm
3
Upper liquid with S.G. = 0.80 kg/dm
3
=
S.G. 0.8
S
.G. 1.0
=
S.G. 0.8
S
.G. 1.0
air/gases
set 4 mA
water
Calibrate 4 mA/0 % level
Immerge displacer for 80 % in water
Press Enter = start calibration.
Press Up + Enter = lock 4 mA value.
air/gases
set 12 mA
water
Calibrate 20 mA/100 % level:
Immerge displacer for 100 % in water
Press Enter = start calibration
Press Up and/or Down = untill loop signal corresponds
with, in our example, 12 mA
=
S.G. 0.8
S.G. 1.2
=
S.G. 0.8
S.G. 1.2
Press Up + Enter = lock 20 mA value
Calculation: = % Span
100 x (1 - Upper S.G.)
Lower S.G. - Upper S.G.
[(20 mA - 4 mA) x 50 %] + 4 mA = 12 mA
= 50 %
100 x (1 - 0,8)
1.2 - 0,8