When a constant current is passed through a thermometer of resistance Rt and a fixed reference resistor of known value Rs, the voltage across them will be in direct proportion to their resistance values. The ratio of the two voltages and therefore of the two …
Know-how
Vendor Managed Inventory
| Gerald Schmitt | Know-howThrough Vendor Managed Inventory (VMI), the capital tied up in the customer's warehouse is minimised, the availability of bought-in parts is maximised at the customer (maximising the levels of service) and thus the typical materials planning problems are solved. …
Selection criteria for mechanical Thermometers (1): Response time
| Christoph Strebel | Know-howSelecting suitable mechanical thermometers for a process is not a quick task. Bimetal thermometers or gas-actuated thermometers - the decision on the type of thermometer alone depends on several factors. One of the most important selection criteria is the response time …
Advantages of diaphragm pressure gauges (1): Measurement of low pressures
| Silvia Weber | Know-howDiaphragm pressure gauges are considered as specialists in the process industries. They come into play when Bourdon tube pressure gauges reach the limits of their performance. One of the advantages of diaphragm pressure gauges is the measurement of low pressures. …
Heat dissipation
| Joachim Brückner | Know-how"At best, a thermometer only ever measures its own temperature". The aim is therefore to equalise the temperature of the sensor element to that of the medium to be measured. Only then will the thermometer display the actual medium temperature. The heat …