Eastern Instruments - Solids Mass Flow and Air Flow Measurement Equipment

Measuring the mass flow rate and totalization of a dry solid material can be difficult when that product is a hard to handle powder.  Product characteristics like particle size, cohesiveness, flowability, bulk density can all affect the accuracy of the mass flow measurement of a powder.  Below we will look at these characteristics in more detail and discuss how the CentriFlow Solid Mass Flow Meter is suited to deal with issues from these characteristics, making them non-issues or helping to eliminated/overcome them to get the best accuracy possible. CentriFlow Meter - Type II Configuration Particle Size: Particle size can become an issue when a material's particles get down to the powder regime, around 0.0394" or 1000 microns (18 mesh) and smaller.  The smaller the particle, usually the more trouble it can be to handle and therefore to measure.  However, there are definitely small particles that are not an issue, like sand, which can fall into the 0.0098" or 250 m

One question that I am asked about all the time is "Why would I need to have a flow straightener and/or flow conditioner to get a good air flow measurement?"  The answer to this questions always comes down to duct configuration or duct arrangement.  If you have a duct that is long and straight, then it is a good bet that there are enough "straight duct runs" to get a decent flow profile in the duct and therefore a good flow measurement.  What most customers find is that these long and straight duct runs just don't exist.  In fact, most customers find that there are more turns, twists, bends, tees, and transitions than the even knew they had. Air/Gas Flow Products & Technology So, how do you know if your flow is turbulent and does not have a good flow profile (i.e. has swirl, reverse flow, cyclonic flow, or flow that is all to one side of the duct)?  For most customers, one way is to go by some guidelines that have been established that give you the