We’ll Calibrate Your Flow Meter When and Where You Need it!
- We can calibrate your flow meter in process at your site – minimizing downtime and reducing disruption to daily operations.
- The Master Meter technique works with most common pipe materials.
- We provide ISO-17025 accredited NIST flow meter Calibration, not just Verification!
Left: Differential Ultrasonic Transceiver in Use. Right: Fuji PortaFlow C F SC 2
A transit time flow meter uses two ultrasonic transceivers, a fixed distance apart, to inject sound waves into the fluid. Sound waves hitch a ride on the medium they are transmitted in, so the sound travelling in the direction of fluid flow will be faster than the speed of sound in the same fluid with no flow. Similarly, the sound transmitted against the flow will travel at a slower speed compared to its speed in the static fluid.
The master meter measures the time of flight of ultrasonic pulses travelling with the flow and those travelling against it. Simple math shows fluid velocity is proportional to the time taken for the sound to travel between the sensors.
Where:
V = Fluid velocity
K = Calibration constant
tus = upstream transit time
tds = downstream transit time
L = Time of Flight distance between sensors
θ = Incident angle of ultrasonic waves
Note the calibration constant K takes various linear properties into account, including variation in the pipe’s internal structure, such as roughening or corrosion that can affect turbidity of the fluid.
Why Flow Calibration is Essential for Your Operations
Process Control and Optimization
Industrial processes depend on accurate flow measurements for optimal operation, efficiency, and product quality. Whether controlling chemical feed rates, managing cooling water flow, or monitoring product transfer rates, measurement accuracy directly affects process performance. Calibrated flow instruments ensure process control systems receive reliable data for maintaining optimal operating conditions and maximizing efficiency.
Product Quality and Consistency
Manufacturing operations across industries rely on precise flow measurements to maintain product specifications and consistency. From mixing ratios in chemical production to flow rates in pharmaceutical manufacturing, accurate flow measurement is critical for product quality. Calibrated instruments prevent quality variations that could result in product recalls, customer complaints, and regulatory violations.
Environmental and Regulatory Compliance
Environmental regulations require accurate monitoring and reporting of discharge flows, emission rates, and waste stream quantities. Industries must demonstrate compliance with permits, discharge limits, and environmental protection standards. Properly calibrated flow measurement systems provide the accurate data necessary for regulatory reporting and environmental compliance verification.
Safety and Risk Management
Many industrial processes involve hazardous materials where accurate flow measurement is critical for safety. Emergency shutdown systems, safety relief calculations, and leak detection systems depend on reliable flow measurements. Calibrated instruments help prevent dangerous conditions, protect personnel and equipment, and ensure safe process operation.
Cost Control and Resource Management
Flow measurements directly impact material costs, energy consumption, and resource utilization. Inaccurate flow measurements can lead to material waste, energy inefficiencies, and hidden costs throughout operations. Regular calibration ensures optimal resource utilization and helps identify process improvements that reduce operating costs.
Custody Transfer and Commercial Accuracy
When flow measurements determine product quantities for sales, billing, or inventory purposes, accuracy directly affects profitability. Custody transfer applications require the highest measurement accuracy to ensure fair commercial transactions and prevent revenue losses from measurement errors.
