Technology
Flow computer or PLC? Calculation, records and responsibility in billing-grade measurement
Short answer: a PLC or DCS can technically calculate corrected volume or energy. In billing-grade measurement the real question is not wheth...
Open-path vs. point gas detectors: what each one measures, what it covers and where it fails
Short answer: in most facilities, open-path and point gas detectors are not interchangeable options but two measurement methods that answer...
Non-contact radar or guided wave radar for tank level? Choosing by foam, vapor and tank geometry
Short answer: the choice between non-contact radar and guided wave radar (GWR) follows from conditions at the measuring point, not the techn...
Control valve sizing: what data do you need for a Cv/Kv calculation?
Short answer: one flow rate and one pressure drop are not enough for a reliable Cv/Kv calculation. For each of the minimum, normal and maxim...
Water, solids and gas in pyrolysis oil metering: how to select the technology
Flow meter technology for pyrolysis oil is selected from a characterization of the oil, not from a meter catalog. Samples from several batch...
Weighbridge and flowmeter disagree on quantity: which records should you compare?
Short answer: when a weighbridge and a meter (flowmeter) show different quantities for the same delivery, the first step is not to declare o...
Coriolis or positive displacement meter for truck loading? Deciding with product and operating data
both technologies are used for custody transfer truck loading, and the right choice depends more on the product and the operation than on th...
Truck loading skid RFQ: how to define scope of supply and interfaces
When you request quotations for a truck loading skid, define the boundaries before the equipment list. Every line item needs one clear answe...
What process data does an RMS/PRMS station quotation need?
For RMS/PRMS quotations that can be compared with each other, the supplier needs at least: minimum and maximum inlet pressure with units and...
How do orifice beta ratio and DP range affect low-flow performance?
at low flow, neither the plate nor the transmitter alone sets orifice measurement quality; the two do it together. Flow rate is proportional...
Single-chamber, dual-chamber or double-isolation orifice fitting: how to choose
: all three designs measure flow the same way; the choice depends on the conditions under which the plate can be reached. A single-chamber f...
Orifice or ultrasonic for natural gas metering? Choosing for a new station and for an orifice station upgrade
Short answer: neither technology is better in general; the right choice depends on whether you are designing a new station or renewing an ex...