Flow Meters
Flow meters measure the rate and total volume of liquids, gases and steam. Accurate flow data supports billing, process control, batching and efficiency.
Flow Meter Types
- Turbine flow met...
Gas flow meters measure compressed air, natural gas, nitrogen and other gases for usage tracking, leak detection and process control.
Gas Meter Types
- Thermal mass meters – direct mass flow, no compensation needed
- Vortex meters – gas and steam
- Variable area meters – simple visual indication
- Diaphragm and rotary meters – fuel gas metering
Choosing a Meter
Provide gas type, flow range, pressure, temperature and pipe size. Thermal meters are excellent for compressed air audits.
Nisco supplies gas flow meters.
Related categories: Flow Meters | Sight Flow Indicators | Turbine Flow Meters | Water Meters
Sight flow indicators confirm at a glance that fluid is moving through a line. They're simple, need no power and are widely used on cooling, lubrication and chemical lines.
Indicator Types
- Flapper indicators – show flow direction
- Rotor indicators – spinning visual confirmation
- Drip tube indicators – low flows
- Full-view windows – observe color and clarity
Choosing an Indicator
Select body material, glass rating, connections and indicator type for your fluid, pressure and temperature.
Nisco supplies sight flow indicators.
Related categories: Flow Meters | Turbine Flow Meters | Gas Flow Meters | Water Meters
Turbine flow meters give high-accuracy measurement of clean, low-viscosity liquids such as water, fuels and solvents. A rotor spins in proportion to flow, producing a pulse signal for totalizing and control.
Features
- High accuracy and repeatability – batching and blending
- Wide flow range – good turndown
- Pulse and analog outputs – integrate with controls
- Stainless construction – chemical and sanitary versions
Installation Tips
Install a strainer upstream and provide straight pipe runs. Turbine meters perform best with consistent, clean fluids.
Nisco supplies turbine flow meters.
Related categories: Flow Meters | Water Meters | Sight Flow Indicators | Gas Flow Meters
Water meters track potable, process and wastewater use for billing, sub-metering and conservation. Accurate metering reveals leaks and helps control costs.
Water Meter Types
- Positive displacement meters – accurate at low flows
- Multi-jet and single-jet meters – commercial service
- Turbine meters – higher flows
- Mag meters – no moving parts
- Pulse and AMR outputs – remote reading
Choosing a Meter
Select by pipe size, flow range and output. Potable water requires lead-free meters.
Nisco supplies water meters for commercial and industrial use.
Related categories: Flow Meters | Turbine Flow Meters | Sight Flow Indicators | Gas Flow Meters
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$862.10
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$147.61
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$277.46
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$1,835.00
Subject to factory lead times
$535.54
Subject to factory lead times
$222.05
Subject to factory lead times
$27.85
Subject to factory lead times
$114.33
Subject to factory lead times
$44.29
Subject to factory lead times
$133.31
Subject to factory lead times
$143.76
Subject to factory lead times
$121.91
Subject to factory lead times
$113.57
Subject to factory lead times
$252.01
Subject to factory lead times
$93.50
Subject to factory lead times
$76.23
Subject to factory lead times
$472.13
Subject to factory lead times
$862.10
Subject to factory lead times
$110.74
Subject to factory lead times
$2,196.51
Subject to factory lead times
$147.61
Subject to factory lead times
$46.60
Subject to factory lead times
$24.72
Subject to factory lead times
$197.65
Subject to factory lead times
$104.84
Subject to factory lead times
$208.81
Subject to factory lead times
$277.46
Subject to factory lead times
$1,835.00
Subject to factory lead times
$535.54
Subject to factory lead times
- The main technologies are differential pressure (orifice plates, venturis), turbine, magnetic, vortex, Coriolis, ultrasonic, positive displacement, and thermal mass. DP and turbine are the old workhorses that you'll find on existing plants. Magnetic, Coriolis, and vortex have largely taken over new installs because they have no moving parts and much better turndown. Ultrasonic is the retrofit winner because the sensors clamp on the outside of the pipe without cutting it.
- Coriolis. It measures mass flow directly via the deflection of a vibrating tube, with accuracy of 0.1% of reading or better. It's also expensive and has line size limits (typically up to 6-inch). For most applications, magnetic flow meters (clean conductive liquids) and vortex meters (steam and gas) are accurate enough at a fraction of the cost.
- Rule of thumb: 10 pipe diameters upstream, 5 downstream. Magnetic flow meters can get away with 5 upstream, 2 downstream because they're less flow-profile sensitive. Vortex needs 15-30 upstream depending on the disturbance. Coriolis is largely independent of straight-pipe runs. If you don't have the room, flow conditioners can shorten the upstream requirement, but they add cost and pressure drop.

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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.




