App note from Murata about matching the measured voltage to the input of a digital meter. Link here (PDF) It is oftentimes necessary to attenuate “large” input signals down to a level that more closely matches the input range of a selected meter. For example, suppose the signal to be measured is 19 Volts, and […]
Tag Archives: digital meters
App note: 4-20mA current loop primer
Basics of current loop App note from Murata, discussing the basic theory of the 4-20mA current loop operation. Link here (PDF) The 4-20mA current loop is a common method of transmitting sensor information in many industrial process-monitoring applications. A sensor is a device used to measure physical parameters such as temperature, pressure, speed, liquid flow […]
App note: Implementing a line frequency meter
Circuit from Murata about line frequency measurement utilizing Murata’s DMS series digital voltmeters, LM2917 frequency-to-voltage converter and a transformer for isolation. Link here (PDF)
App note: Engineering scaling
Scaling large values to be fed on limited input digital meters, application note from Murata. Link here (PDF) It is oftentimes necessary to attenuate “large” input signals down to a level that more closely matches the input range of a selected meter. For example, suppose the signal to be measured is 19 Volts, and the input […]