April 18,
2016 1213 1213 
Even in this digital world of ours, most primary measurements in process plants are still analogue by nature – they only become digital down-line. Temperature starts out as voltage derived from joining two dissimilar metals together or from a charge in resistance from metals like platinum, nickel or semiconductors or measuring infrared radiation. Pressure, flow and force are measured by physical deformation with strain gauges (i.e. Wheatstone bridges or piezo-electric effects). There are myriad ways in which Level can be measured and most start with an analogue measurement. It’s for this reason then, that in plant maintenance, commissioning and instrumentation workshops, process calibrators remain indispensable.
April 5,
2016 1353 1353
KOBOLD Instrumentation, represented in South Africa by Instrotech – a Comtest Groupcompany – develops, manufactures and sells instruments for monitoring,measuring and regulating the physical quantities of flow through pressure,level and temperature.