
INSTALLATION, OPERATION AND MAINTENANCE
Threaded and Wafer Style Flowmeters
Wafer Style Flowmeter
Figure 1
SP.GR.=1.0
GPM
150
200
250 300
350
100
400
Table of Contents
Page
1.
1.
1.
1.
1.
Principle of Operation
Principle of Operation
Principle of Operation
Principle of Operation
Principle of Operation ......................................
......................................
......................................
......................................
...................................... 2
2
2
2
2
2.
2.
2.
2.
2.
Installation Planning
Installation Planning
Installation Planning
Installation Planning
Installation Planning ........................................
........................................
........................................
........................................
........................................ 2
2
2
2
2
3.
3.
3.
3.
3.
Installation
Installation
Installation
Installation
Installation ........................................................
........................................................
........................................................
........................................................
........................................................ 3
3
3
3
3
3.1 Safety Considerations ........................................
3
3.2 Changing the Dial Orientation ............................
3
3.3 Changing from Horizontal to Vertical ..................
3
3.4 Threaded bodies ................................................
3
3.5 Wafer style bodies ..............................................
3
4.
4.
4.
4.
4.
Operation and Maintenance
Operation and Maintenance
Operation and Maintenance
Operation and Maintenance
Operation and Maintenance ............................
............................
............................
............................
............................ 4
4
4
4
4
4.1 Preventive Maintenance .....................................
4
4.2 Checking Zero ....................................................
4
4.3 Checking the Pointer Preload .............................
4
4.4 Coarse Zero Adjustment ....................................
4
4.5 Fine Zero Adjustment .........................................
5
4.6 Flow Calibration ..................................................
5
4.7 Cleaning of Pressure Ports .................................
6
4.8 Adjustment of Reed Switches .............................. 6
5.
5.
5.
5.
5.
T
T
T
T
Troubleshooting
roubleshooting
roubleshooting
roubleshooting
roubleshooting ...............................................
...............................................
...............................................
...............................................
............................................... 6
6
6
6
6
5.1 Pointer Fluctuations ............................................
6
5.2 Zero Shift ............................................................
7
5.3 Sluggish Meter Response ..................................
7
6.
6.
6.
6.
6.
Correction F
Correction F
Correction F
Correction F
Correction Factors
actors
actors
actors
actors ...........................................
...........................................
...........................................
...........................................
........................................... 7
7
7
7
7
6.1 Liquid Service .....................................................
7
6.2 Compressed Gas Service ..................................
7
7.
7.
7.
7.
7.
Cutaway view
Cutaway view
Cutaway view
Cutaway view
Cutaway view ....................................................
....................................................
....................................................
....................................................
.................................................... 8
8
8
8
8
Figures
Figure 1
Wafer style flowmeter .......................... 1
Figure 2
Installation conditions .......................... 2
Figure 3
O-ring installation ................................ 3
Figure 4
Zero reference point ............................ 4
Figure 5
Pointer preload .................................... 4
Figure 6
Cam nut and stop nut .......................... 5
Figure 7
Cam follower adjustment ..................... 6
Figure 8
Reed switch adjustment ...................... 6
Figure 9
Cutaway view ...................................... 8