Honeywell ST 3000 User Manual page 164

7.11 Liquid Level Measurement with DP Transmitter with
Remote Seals,
Procedure, continued
Table 45 Starting Up DP Transmitter with Remote Seals for Liquid Level Measurement with
SFC, continued
Step Press Key
6
E
LRV
0%
G
SET
NON-VOL
ENTER
(Yes)
7 INPUT
J
OUT-
PUT
8
9
150 ST 3000 Release 300 and SFC Model STS103 User's Manual
Continued
Read Display or Action
L R V 1 P T
"
Ø . Ø Ø Ø Ø
L R V 1 P T
S E T L
L R V 1 P T
"
– 1 3 5 . 3 6
O U T P 1 P T
S F C W O R K I N G .
O U T P 1 P T
Ø . Ø Ø Ø
If you ... Then...
can not fill tank go to Step 9.
can fill tank go to Step 10.
Key in URV that is equal to full tank
pressure. See section 6.7 in this manual
for details on keying in a range value.
Go to Step 12.
Read present LRV setting.
3 Ø 1 1
H 2 O _ 3 9 F
Prompt asks if you want to set LRV
3 Ø 1 1
to applied pressure.
R V ?
LRV is set to fixed reference leg
3 Ø 1 1
pressure H2 times specific gravity of
H 2 O _ 3 9 F
remote seal fill fluid and –1 for
pressure on low side of meter body.
Call up output for display.
3 Ø 1 1
. .
Read 0% output on display for
3 Ø 1 1
corresponding empty tank pressure
%
plus reference pressure H2. For
analog transmission, check that
milliammeter reading is 4 mA (0%)
output.
You can use these formulas to
calculate URV in inH
Span = H1 x S
H1 = Height of variable head
S
L
URV = Span + LRV
Example: If H1 equaled 10 feet, the
measured liquid was water, and the
LRV equaled –135.36 inH2O;
substituting into the formulas yields.
Span = 10 ft x 12 in x 1.00
Span = 120 inH
URV = 120 inH
URV = –15.36 inH
ATTENTION The specific gravity
of water at 60 °F (15.6 °C) is 1.00.
Description
O.
2
L
in inches.
= Specific gravity of
measured liquid.
O
2
O + –135.36 inH
2
O
2
Continued on next page
O
2
6/05