Reference Manual
00809-0100-4809, Rev CB
March 2012
Annubar Flowmeter Series
Section 3 Commissioning
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1
Transmitter Commissioning . . . . . . . . . . . . . . . . . . . . . . .page 3-2
Commissioning The Annubar . . . . . . . . . . . . . . . . . . . . . . page 3-2
SAFETY MESSAGES Instructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the op erations. Please refer to
the following safety messages before performin g any op eration in thi s section.
Explosions could result in death or serious injury:
• Do not remove the transmitter cover in explosive atmospheres when the circuit is
live.
• Before connecting a Field Communicator in an explosive atmosphere, make sure
the instruments in the loop are installed in accordance with intrinsically safe or
non-incendive field wiring practices.
• Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
• Both transmitter covers must be fully engaged to meet explosion-proof
requirements.
Failure to follow these installation guidelines could result in death or serious injury:
• Make sure only qualified personnel perform the installation.
• If the line is pressurized, serious injury or death could occur by opening valves.
www.rosemount.com
Section 3 contains information that are suggested procedures only. The user must follow all
plant safety procedures for their process and location.
Annubar Flowmeter Series
Reference Manual
00809-0100-4809, Rev CB
March 2012
TRANSMITTER
COMMISSIONING
See the appropriate transmitter manual for wiring and configurat ion
instructions:
Table 3-1. Transmitter Manual document numbers
Transmitter
Rosemount
3051S
MultiVariable
Mass and
Energy Flow
Transmitter
Rosemount
3051S Pressure
Transmitter
Rosemount
3095
MultiVariable
Mass Flow
Transmitter
Rosemount
3051 Pressure
Transmitter
Rosemount
2051 Pressure
Transmitter
HART document
Number
00809-0100-4803 N/A N/A
00809-0100-4801 00809-0200-4801 N/A
00809-0100-4716 00809-0100-4716 N/A
00809-0100-4001 00809-0100-4774 00809-0100-4797
00809-0100-4101 00809-0200-4101 N/A
FOUNDATION
fieldbus document
number
Profibus
document number
COMMISSIONING THE
ANNUBAR
Direct Mount Transmitter Prepare Transmitter for Service
Prior to commissioning the flowmeter, a zero trim procedure (or “dry
zero”) should be performed to eliminate any positional effects to the
transmitter. Refer to Figure 3-1 and Figure 3-2 for valve designations.
1. Open first the equalizer valve(s) MEL and MEH or ME.
2. Close valves MH and ML.
3. Read the transmitter output. It should read within the range 3.98 mA
to 4.02 mA. If the output is outside of this range, perform a zero trim
procedure as described in transmitter manual (see Table 3-1 for
transmitter manual document numbers).
“Calibrate Out” Line Pressure Effects
For applications with static pressures of 100 psi (6.9 bar) and higher, the DP
sensor should be zeroed for line pressure effects. The “zero” calibration
procedure is affected by static pressure and ambient temperature, but these
effects can be minimized by zeroing the DP sensor at normal operating
conditions.
The effect of static pressure is calibrated out by exposing the transmitter to
the line pressure and performing a “zero” or wet calibration, as described
below.
3-2
Reference Manual
DVH
DVL
ML
ME
MH
00809-0100-4809, Rev CB
March 2012
Annubar Flowmeter Series
Although the line pressure effects are relatively small, they significantly affect
the accuracy of the Annubar when used with low flows.
Periodic “zero” calibration and/or commissioning is recommended to maintain
the accuracy of Annubar. The frequency of this type of maintenance should
be established for each individual application.
Liquid Service 3-Valve Manifold
The following procedures assume the process pipe is pressurized to normal
operating pressure and should be followed to obtain a true zero at static or
“pipe” pressure.
1. Open the high and low manifold valves MH and ML. Refer to
Figure 3-1 for valve designations.
2. Open the Equalizer valve ME.
3. Open the drain/vent valves on the transmitter DVH and DVL; bleed
until no air is apparent in the liquid.
4. Close both drain/vent valve DVH and DVL.
5. Close the low side manifold valve ML.
6. Check the transmitter zero by noting the output. If the signal reads
outside of the range 3.98 mA to 4.02 mA then perform a zero trim
procedure as described in the transmitter manual.
7. After the zero trim, if the signal reads out side of th e rang e 3.98 mA to
4.02 mA, repeat steps 1 - 6.
8. Close the Equalizer valve ME.
9. Open the low side valve ML and ensure that the high side valve MH is
open.
10. The system is now operational.
Figure 3-1. Valve Identification
for Direct Mounted Annubar
Models with 3-Valve Manifold
3-3
Annubar Flowmeter Series
MEH
DVL
ML
MEL
MH
DVH
MV
Liquid Service 5-Valve Manifold
The following procedures assume the process pipe is pressurized to normal
operating pressure and should be followed to obtain a true zero at static or
“pipe” pressure.
1. Open high and low manifold valves MH and ML. Refer to Figure 3-2
for valve designations.
2. Open high side equalizer valve MEH.
3. Open low side equalizer valve MEL.
4. Open manifold vent MV; Bleed until no air is present in the liquid.
5. Close manifold vent MV.
6. Close low side manifold valve ML.
7. Check transmitter zero by noting the output. If the signal reads
outside of the range 3.98 mA to 4.02 mA then perform a zero trim
procedure as described in the transmitter manual.
8. After the zero trim, if the signal reads outside the range 3.98 mA to
4.02 mA, repeat steps 1-6.
9. Close low side equalizer valve MEL.
10. Close high side equalizer valve MEH.
1 1. Open low side manifold valve ML and ensure high side manifold valve
MEH is open.
12. The system is now operational.
Reference Manual
00809-0100-4809, Rev CB
March 2012
Figure 3-2. Valve Identification
for Direct Mounted Models with
5-Valve Manifold
3-4
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