Closed Tank, Condensing Atmosphere Level Measurement - ABB Platinum standard Series Product Instruction

INSTALLATION
SETUP AND PHYSICAL INSTALLATION
3 - 14
h = M A X . LE V E L TO B E M E A S U R E D
3
Z E R O E LE VAT IO N
= (h -– h ) x S G
2
Figure 3-9. Closed Tank, Condensing
Atmosphere Level Measurement
V 12.00 –
R
= ---------------------- -
max
0.02
NOTES:
1. The equation for load resistance is based on a maximum output
of 20 milliamperes with the - (negative) TEST terminal jumper screw
tightened. In some cases (initialize high, fail high, overpressure con-
ditions, etc.) the output may be higher. If this value is known, it can
be used in the denominator of the equation instead of 0.02.
2. If the - (negative) TEST terminal jumper screw is loosened
½-turn the minimum supply voltage is 12.7 VDC.
3. If using the optional lightning arrestor, add 0.4 VDC to all mini-
mum supply voltage values.
The power supply and load resistance are variable over the
entire operating region shown in Figure 2-4.
P L U G G E D
F ILLIN G T E E
h – h
2 1
h
3
3-VA LV E
M A N IF O L D
h
1
+
S PA N = h x S G
3
20
15
10
1
5
4
-250
(-6 2.2)
0
D IF FE R E N TIA L P R E S S U R E
IN . H O (kPa)
2
F ILLE D
LIN E
h
2
–
+ 250
(+ 62.2 )
T 02 22 3 A
WBPEEUI110504A0