Inline Density Measurement
-
Coriolis Mass Flow Meter Selection: Sizing, Fluid Fit, and the Decisions That Actually Matter
You do not specify a Coriolis mass flow meter by model number. You specify it by answering a short list of ugly questions about your medium, your pipe, and the figure on the batch report that someone will eventually dispute. We machine the tubes, weld the headers, and calibrate every transmitter ...Read more -
Density Measurement in Chemical Processing: Acid, Caustic and Solvent Service
Density measurement in a chemical plant is harder than it looks. Not because the physics is complicated — a tuning fork in a liquid still measures density the same way it does anywhere. The difficulty is that chemical service attacks the instrument from three directions at once: the fluid is corr...Read more -
How Refineries, Chemical Plants and Food Factories Use Online Process Meters
Walk into any modern refinery, chemical plant, or food factory and you will find the same instruments doing different jobs. A density meter measures crude oil quality in one building and sugar syrup concentration two hundred kilometers away. A viscometer watches polymer viscosity in one plant and...Read more -
Buying Density and Concentration Meters from China: A Practical Buyer`s Guide for Plant Engineers and Procurement Teams
Ten years ago, the question was whether to buy process instrumentation from China at all. Today, that question is obsolete — China is the largest manufacturing base for industrial density, viscosity, and concentration meters in the world, and most global instrument brands assemble their entry-lev...Read more -
Density Meter Troubleshooting: A Symptom-Based Field Guide for Maintenance Engineers
The density meter is reading wrong. That is all you know. It could be a sensor problem, an installation problem, a calibration problem, or a process problem — and the reading does not tell you which one it is. This guide is organized by symptom, not by component. When the meter is giving you a pr...Read more -
How to Select the Right Density Meter: A Decision Guide for Process Engineers
Every month we get an inquiry that goes something like this: “We need a density meter. Can you send a quote?” Our first response is always the same: “What are you measuring, what is the fluid, and what do you need the data for?” Nine times out of ten, the buyer has not thought through those three...Read more -
Slurry Density Measurement in Mining:Three Decisions That Determine Your Circuit Performance
The hydrocyclone is one of the most misunderstood pieces of equipment in mineral processing. Operators watch the overflow and underflow. They adjust the feed pump. They watch the pressure gauge. They rarely watch the density. That is a mistake, because the single most important variable for class...Read more -
Why Brix Is Not Brix – HFCS, Sucrose, and the Measurement Problem in Food and Beverage
Here is a conversation we have had more than once. A food processor specifies an inline Brix meter for their HFCS blending line. The specification says “Brix measurement.” The instrument selected is a refractometer. The reading comes out. The lab measures the same product with a pycnometer and ge...Read more -
Where Density Measurement Actually Happens in a Refinery
Every refinery engineer knows that density matters. Crude oil pricing is by API gravity. Product quality is tied to density. Blending is controlled by density. But if you ask where exactly inline density measurement changes how the plant runs, the answers are more specific than the textbooks sugg...Read more -
Density Measurement in Pharmaceutical Manufacturing
Regulatory requirements, process control, and where inline density fits in a GMP environment A FDA inspection finding from a few years ago: a liquid pharmaceutical manufacturer was controlling syrup concentration using periodic lab samples. The last sample before a batch release was 48...Read more -
Density Meter vs Concentration Meter
What is the difference — and why it changes how you specify By LONNMETER Technical Team · Process density & concentration instrumentation A customer called us last month. They were specifying instruments for a sulfuric acid dilution skid. “I need a density meter and a concentration meter,”...Read more -
Temperature Compensation in Inline Density Measurement
The Temperature Problem Is Bigger Than You Think Here is a number that surprises most engineers: a temperature change of 10°C changes the density of water by about 0.002 g/cm³. For most organic liquids — acids, solvents, oil products — the effect is three to five times larger. A density meter wit...Read more
