WebAnalogue multimeters. Analogue meters take a little power from the circuit under test to operate their pointer. They must have a high sensitivity of at least 20k /V or they may upset the circuit under test and give an incorrect reading. See the section below on sensitivity for more details.. Batteries inside the meter provide power for the resistance ranges, they will … WebThe so-called corrosive media, that is, the most significant characteristic of the medium is corrosive. Therefore, even without considering the high-temperature environment, the measurement of such substances is preferred to the radar level meter made of PTFE antenna, after all, the most significant characteristic of PTFE is the resistance to acids …
(PDF) Standards on Water Meters - ResearchGate
WebNov 10, 2012 at 12:43. 1. If the display units change, then there should be an indicator on the display to tell you the current unit, like a "uA" or "mA". So if the display says 0.5 and the "mA" designator is visible, then it's 0.5 mA, while if only an "A", or "Amp" indicator is visible, then it's 500mA. – Johnny. WebJan 2, 2016 · Flow measurement generally involves weighing trade-offs between a number of factors. Other issues that commonly influence meter selection and installation method include meter pressure loss (because fuel is often delivered to the boiler at low pressure), available straight run, and of course, lifecycle economic factors. rsh session
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WebThe task of the meter designer is to take a given meter movement and design the necessary external circuitry for full-scale indication at some specified amount of voltage or current. … WebSteps to select a flow meter. 【1】First, it is necessary to confirm the properties of detection fluids. 【2】Next, clarify the purpose of measurement. At this point, determine a selectable detection system along with properties such as accuracy and flow range. 【3】Once the detection method has been determined, make a decision while ... WebOct 1, 1991 · Selecting flowmeters The real 'meat' of the standard is Section 2, the General Selection Procedure. Five broad areas have been identified as being crucial, and within each area a number of factors that need consideration are listed. rsh signature