Instrumentation systems assignment Lab Report Example | Topics and Well Written Essays - 750 words

Instrumentation systems assignment - Lab Report Example Single-point adjustment allows for the linear characteristic curve to be shifted in positive or negative direction over the entire measuring range. The large selection of pressure units of up to 6 different units is possible. It is far more than any complicated dual-scale, or multi-scale gauge can offer. The digital pressure gauge has a selection point for the required display unit to be posted on the screen. The desired value can be read directly eliminating the need for conversions (Kobata, Kojima and Kajikawa, 2012). Pressure is applied to the pressure sensors within the equipment. These sensors can either be resistive, capacitive or piezoelectric crystals. A pressure on the crystals causes a generation of electric current due to the piezoelectric effect. Since the generated voltages are slight, an amplifier is used to amplify the output to a readable value. The output is in analog form due to the analog sinusoidal voltage output from the transducers. The analog to digital converter is thus used to convert the analog output to produce its digital counterpart for ease of reading. The final output is displayed on a digital display screen (Morris, 2001). There are two operating keys on the Reference Type E. The left key turns the instrument on while at the same time used to execute its functions. Contrarily, the right key helps in switching between the MAX and MIN-value. The device displays the pressure range after turn-on for two seconds before changing into measuring mode. The functions of the device include: An indication on the display shows if the ZERO- and/or CONT-function is activated. By pressing the left key until ZERO and/or CONT disappears, the zero is reset to factory settings with the possibilities of reactivating the automatic turn-off function. It the actual pressure goes beyond the measuring range, OFL (overflow) appears on the display (Quinn, 1970). Pressures of known values were