EN
ar
bg
hr
cs
da
nl
fi
fr
de
el
hi
it
ko
no
pl
pt
ro
ru
es
sv
tl
iw
id
lv
lt
sr
sk
sl
uk
vi
et
hu
th
tr
fa
ms
hy
ka
ur
bn
mn
ta
kk
uz
ku
Vibrating Wire Strain Gauges for Bridge, Tunnel & Dam Monitoring: Complete Selection Guide
The global construction industry is experiencing a massive surge in large-scale infrastr...
Smart Weir Flow Meter for Accurate Open Channel Measurement
Smart Weir Flow Meter
Kingmach’s Smart Weir Flow Meter tackles the hassle of open channel flow measurement head-on. Instead of forcing you into a one-size-fits-all setup, we build each unit around your actual site conditions—whether you’re dealing with fluctuating water levels in irrigation canals or tough effluent flows in treatment plants. The meter combines a proven weir structure with a smart sensor head that calculates flow on the spot, cutting out the guesswork. Our team handles calibration and configuration before the system leaves the factory, so you get a ready-to-install device that works with your existing SCADA or local display. No generic templates, no unnecessary complexity.
Technical Detail
Configured around process stability, mold life, and long-term uptime.
At the core of the Kingmach Smart Weir Flow Meter is a measurement logic that adapts to different weir types—rectangular, v-notch, or custom profiles. The sensor continuously tracks upstream water level with ultrasonic or radar options, then converts that head reading into real-time flow using the weir’s rating curve. Temperature compensation and built-in filtering help keep readings stable as ambient conditions shift. Output options include 4-20 mA, RS485, and relay alarms, so integration with existing control panels is straightforward. The transmitter housing is IP67 rated, and the sensor body is made from corrosion-resistant 304 stainless steel—details that matter when the meter sits outside year-round. Because Kingmach is an instrument manufacturer first, we can also supply matching data loggers, remote telemetry units, and cloud-based dashboards if you need a full monitoring chain without juggling multiple vendors. Support extends beyond delivery: our engineers can assist with site survey, weir sizing, and commissioning either remotely or on-site through our global network.
News
Industry updates
Hollow Load Cells for Bridge Cable & Anchor Monitoring: Selection Guide & Specifications
Cable-stayed bridges, pre-stressed concrete decks, and dam anchors rely on precisely cal...
Understanding the 9 Types of Load Cells: An Engineering Selection Guide
The Type of Load Cell Is Not a Product Choice—It Is an Engineering Decision In ...
Products
Production modules
FAQ
Common technical questions
How is the flow calculated in a smart weir meter?
The sensor measures the water head over the weir crest, and the built-in transmitter applies the appropriate rating equation for the weir shape, such as the Francis or Kindsvater-Carter formula. Compensation factors for approach velocity and submergence are applied automatically when relevant sensors are connected.
What weir types does Kingmach’s meter support?
We can ship pre-configured units for standard thin-plate weirs (rectangular, v-notch, cipolletti) and broad-crested weirs. For unusual channel profiles, we can program a custom rating curve based on your lab calibration data or hydraulic modeling.
Can the meter work in wastewater with solids?
Yes, with the right sensor choice. For effluent with grease or floating debris, we recommend a non-contact radar sensor. For cleaner water, an ultrasonic sensor is usually sufficient. The sensor mount can be positioned to avoid sediment buildup in the stilling well.
Do I need a stilling well for accurate measurement?
A stilling well is advisable if your approach channel is turbulent or has surface waves. In smooth, straight channels with adequate upstream length, a properly installed sensor without a stilling well can still meet accuracy requirements. Our team can advise during the site assessment.
What kind of maintenance does the system require?
The primary maintenance task is keeping the sensor face clean and free from condensation. A self-cleaning shield or periodic wipe-down is enough in most settings. The weir plate itself should be inspected for damage or algae buildup during routine site visits.
Need a solution for your project?
Share your product type, target capacity, and application requirements. Our team can review the details and recommend a practical next step.