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10 Kg/H Flow Meter for Chemical Feeding Line Setups
Quick Answer: A micro Coriolis mass flow meter delivers the best accuracy for a 10 kg/h chemical dosing line. Silver Instruments offers the SMF-004 Coriolis meter with 316L or Hastelloy wetted parts, a range up to 30 kg/h, and direct mass output. The meter sends a 4-20 mA HART signal to your PLC or dosing pump, and it needs no straight pipe runs.
Mass Flow Matters More Than Many Engineers Expect
Chemical feeding systems dose coagulants, flocculants, disinfectants or pH adjusters at very low rates. A small error can lead to off-spec product or regulatory fines. This is why you need a meter that measures mass directly. Volumetric flow sensors react to temperature, viscosity, and density changes. A rotameter loses accuracy when the chemical warms up. A magnetic flow meter fails if the liquid conductivity drops below 5 µS/cm. Here is the thing. Many plants still rely on cheap glass tube rotameters. They are simple. But they cannot output a signal to a control system. Operators adjust them manually. That creates batch-to-batch variation. Because a Coriolis meter senses mass, not volume, a 10 kg/h setpoint stays stable even if the fluid temperature shifts from 15°C to 35°C.
The Right Instrument: Silver Instruments Micro Coriolis Meter
Silver Automation Instruments designed the SMF-004 for small-bore chemical injection and pilot plant dosing. This meter handles a flow span from 0.2 kg/h to 30 kg/h. The specified accuracy is plus or minus 0.1% of reading. Wetted parts are standard 316L stainless steel with a Hastelloy C-22 diaphragm option for aggressive acids. Process connections come as DN3 or DN6 tri-clamp or threaded. The meter outputs 4-20 mA HART, pulse, and RS485 Modbus. Power requirement is 24 V DC. The secondary containment housing meets IP65 or IP67. For ATEX Zone 1 locations, Silver Instruments can supply an Ex ia certified version. Most engineers skip an important detail. This meter also measures density. With that value you can verify chemical concentration online, which helps detect dosing errors before product quality suffers.
Installation That Actually Works on a Dosing Skid
You do not need long straight pipe sections upstream or downstream. The Coriolis sensor is immune to swirl and flow profile distortion. You can mount it vertically or horizontally, but avoid positions that trap gas bubbles. A check valve placed directly after the meter prevents backflow during pump idle. If you use a diaphragm metering pump, add a pulsation dampener. The oscillating flow from a simplex pump confuses the meter signal. We have seen this on customer sites many times. A small dampener costs a fraction of the meter and gives a rock-steady reading. Also, secure the meter base to a rigid frame. Flexible tubing reduces pipe stress but can transmit vibration if unsupported. When the mechanical installation is right, the SMF-004 requires almost no
A Real Case: Caustic Soda Dosing in Peru
Last year a water reuse plant in Peru needed to dose 10 kg/h of 25 percent sodium hydroxide. Their existing setup used a glass tube rotameter with a needle valve. The float stuck every few days. The plant could not get a continuous 4-20 mA signal for their SCADA. They switched to our SMF-004 with PTFE liner and Hastelloy sensor tubes. The PLC received direct mass flow data. The dosing pump stroke adjusted automatically via PID. Chemical consumption dropped 12 percent in three months. Because the trend data revealed over-dosing during morning start-up sequences. The plant manager later ordered three more units for their ferric chloride and polymer dosing lines. So a single reliable flow meter fixed both process control and chemical cost.
How to Order Your 10 kg/h Chemical Feed Meter
To get a quotation tailored to your 10 kg/h setup, please collect these details: chemical name and concentration, viscosity in cP, minimum and maximum flow rates, process temperature in degrees Celsius, operating pressure in bar, tube or pipe connection size (DN), and preferred signal output. Also tell us if you need Ex proof certification. Send us your pressure (bar), temperature (°C), pipe size (DN), and flow range. Our application engineers will propose a complete part number and provide a piping recommendation. You can reach us through the contact form on flow-meter.com.au or email directly.
Frequently Asked Questions
Can the SMF-004 handle corrosive chemicals like 98 percent sulfuric acid?
Yes. We offer wetted parts in Hastelloy C-22 and a PTFE-lined sensor option for high-corrosion services. Provide your acid concentration and operating temperature. We will confirm chemical compatibility before quoting.
What is the minimum flow rate the meter can detect accurately?
The SMF-004 zero stability is around 0.02 kg/h. A flow of 0.5 kg/h is well above the noise floor. The practical range for guaranteed accuracy is 0.2 to 30 kg/h under stable process conditions.
Can we use the same meter model for a 50 kg/h transfer line?
The SMF-004 saturates at about 30 kg/h. For higher rates, Silver Instruments supplies larger Coriolis meters up to DN50. Our team can size the correct model once you share your maximum flow.
Does the meter require regular recalibration?
No field recalibration is needed under normal conditions. The zero point can be checked and adjusted via the local display or HART communicator. In custody transfer applications we recommend a factory recalibration every two years.
What support is available for installers in Southeast Asia?
Silver Automation Instruments supports commissioning via remote video calls. We also work with local service partners in Malaysia, Indonesia, and Vietnam. Spare parts are stocked in our Shenzhen warehouse for fast dispatch to Asia-Pacific and Oceania.
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