.png)
Chemical Dosing Flow Measurement | Application Guide
Blending, dilution and injection. A practical application brief for defining a flow measurement system.
Define the duty
Identify the chemical, concentration and temperature across normal operation, startup and flushing. Supply a current material compatibility requirement and the dosing rate range. A meter chosen for water cannot be assumed suitable for acids, solvents or concentrated additives.
Technology candidates
Electromagnetic measurement is a candidate for conductive solutions; Coriolis may suit mass-based dosing. Other technologies can suit specific clean fluids, but low-flow performance must be verified at the actual operating conditions. Non-invasive measurement still needs a suitable pipe and acoustic path.
Installation and selection checks
Check every wetted part, including electrodes, liner, seals and connections, plus pressure, temperature and any hazardous-area requirement. Assess pulsating pump flow, bubbles, empty lines and pressure loss. Confirm the required response time for the control loop.
Commissioning and ongoing use
Define a commissioning test using an agreed reference and representative flow rates. Check dosing ratio, signal scaling and the response to a stopped pump or empty supply. An alarm should support an agreed operator response and any separately engineered protection.
What to send with your enquiry
Include the fluid and its properties; minimum, normal and maximum flow; pressure and temperature; pipe internal diameter, material and lining; connection requirements; available installation space; power supply; and the required pulse, analogue or digital interface.
State the decision the measurement must support, the required accuracy across the operating range, and any calibration, certification or reporting documents. Supply a marked-up pipe sketch and identify access or shutdown constraints so the quotation can cover installation and integration as well as the meter.
Sensor and equipment options
Browse these live products as selection candidates. Confirm the exact model and configuration against your application; listed ranges and options are not interchangeable.
Candidate for conductive solutions when the liner, electrodes and seals are compatible with the chemical and concentration.
Mass-based dosing candidate; verify performance at the lowest actual dosing rate and allow for pressure loss.
Candidate for selected viscous fluids. Confirm chemical compatibility and whether the fluid contains particles.
Provide chemical name, concentration, temperature, viscosity, safety data and minimum dosing rate. Verify all wetted parts and seals; a PTFE-lined meter is not automatically compatible with every chemical. Test the effect of pump pulsation and air.
Build the complete measurement system
Process connection → selected meter or sensor → compatible signal input → local indication, totalisation or recording → optional telemetry and monitoring → agreed operator response.
Pulse: confirm pulses per litre or the required K-factor and receiving input frequency. 4–20 mA: agree the range, units, wiring and fault interpretation. RS485/Modbus: verify the exact register map, address, serial settings, scaling and byte order. A matching connector is not evidence of compatibility.
Keep flow rate and accumulated volume separate. Logging a 4–20 mA flow signal does not automatically provide reliable totalisation; specify and verify that calculation or read the meter's own cumulative total. Remote communications and cloud dashboards need an agreed device and integration path.
What the quotation should include
Exact meter model and size; wetted parts and seals; process fittings; transmitter and output configuration; power supply; indicator or logger; mounting and enclosure; cables; calibration documents; software and communications; and any requested configuration, installation or commissioning. Hardware listings include only their stated components and selected options.
Explore related flow applications
Application planning guidance, adapted from the ProSense Instruments flow overview with AI assistance. This is not a customer case study. Confirm model specifications, documents and project suitability before ordering.
