|
 |
| • |
Choice
of Two Materials of Construction:
Select from brass or stainless steel to meet system
and liquid requirements. |
| • |
Unrestricted
Mounting: Allows
the designer to install the monitor in any direction
- horizontal, vertical or inverted. Two scale positions
available for scale reading ease. |
| • |
Compact
and Rugged Design: Measures
less than 5" long and 1-1/2" diameter with
a tough polysulphone body of construction. |
| • |
Visual
Inspection of Fluid:
The transparent body allows for visual inspection of
fluid conditions. Diagnose problems at a glance. |
| • |
Patented
Sensing Method Assures Accuracy:
The Helical-Torque sensing method assures accuracy of
better than 95% of actual flow rates, even with variable
fluid parameters. |
| • |
Superior
Readability:
Extra long 3-1/2" scale provides excellent flow
rate measuring resolution along with dual units of GPM
and LPM. |
| • |
Fourteen
Port Sizes Available:
Standard selection of NPT, SAE and BSP ports reduces
the amount of adapters required for installation. |
| • |
Low
Cost Precision:
Measuring accuracy of ±5% and repeatability of
±1%. |
|
| ENGINEERING
SPECIFICATIONS:
The Visi-Rate meter shall:
| • |
Use
the mass axial turbine rotation to measure flow rate |
| • |
Not
require inlet or outlet straight plumbing, or require
vertical pipe mounting |
| • |
Have
a measuring accuracy of ±5% of full scale with
±1% repeatability |
| • |
Use
the helical-torque sensing method to measure flow |
| • |
Be
Lake Monitor No. VRB-_ _-_ _ for flow measuring or for
a flow indicator be a VRI-_ _ |
|
| MATERIALS
OF CONSTRUCTION:
Wetted
Components
|
Component
|
Brass
|
Stainless
Steel
|
|
End ports
|
Brass
|
Stainless Steel
|
|
Seals
|
Buna-N
|
Viton®
|
|
Spring
(VRB Series)
|
Stainless
Steel
|
Stainless
Steel
|
|
Turbine
and Casing
|
Polysulphone
|
Polysulphone
|
|
PERFORMANCE:
| • |
Measuring
Accuracy: ±5%
of full scale |
| • |
Repeatability:
±1%
of full scale |
| • |
Flow
Measuring Range (VRB flow meters): 1-30
GPM [5-110 LPM] |
| • |
Minimum
Flow Detection (VRI flow indicators): 0.2
GPM [0.8 LPM] |
| • |
Maximum
Operating Temperature: 250ºF
[121ºC] |
| • |
Maximum
Operating Pressure: 200
PSIG [14 bar] |
| • |
Pressure
Differential: See
graphs below. |
| • |
Filtration
Requirements: 37
micron (400 U.S. mesh) minimum |
|
| MECHANICAL: |
|
|
|
DIM
|
1/4"
- 1/2" SIZES
|
3/4"
- 1" SIZES
|
|
A
|
1-3/4" (45 mm)
|
1-3/4" (45 mm)
|
|
B
|
3/4" (87 mm)
|
5-3/8" (137 mm)
|
|
Port Sizes
|
NPTF: 1/4", 3/8",
1/2"
SAE: #6, #8, #10
BSPP: 3/8", 1/2"
|
NPTF: 3/4", 1"
SAE: #12, #16
BSPP: 3/4", 1"
|
|
| PRESSURE DIFFERENTIAL
VS FLOW RATE: |
|
|
