EPRI Part A Study Guide Latest Update Graded A+

EPRI Part A Study Guide Latest Update Graded A+ The temperature of a transmitter is 20-300 degrees F. The output signal is 3-15 psig. What would be the expected output signal for an input temperature of 175 degrees F? 195/320=.609(16)+3=9.64 psig Most flow measurements occur under __________________ conditions. turbulent Six cubic feet of a liquid is 400 pounds. the Specific Gravity of the liquid is... 400/(62.430*6=374.58) = 1.068 Full compensation of a remote reading thermometer would typically be provided by... secondary capillary An increase in viscosity of a liquid will result in a ________ Reynolds number lower A tank contains 9 cubic feet of a liquid. The liquid weighs 470 pounds. The specific gravity of the liquid is... 470/(62.43*9=561.87)=.836inwc In most process control systems the process measurement is derived from a... sensor A type of OPEN CHANNEL flow meter which is typically used to measure WATER flow is the ... Parshall Flume when using a voltmeter without a reference junction to measure the out put of a thermocoulple it is necessary to... Subtract the reference junction millivolts from the instruments voltage reading A type of level transmitter which would require that the vessel containing the liquid was open to the atmosphere would be a... bubbler A bubbler has the following instruments connected as part of the control loop; FI1001, PCV1001, LIT1001, LIC1001. Which device would most commonly be used for the flow indicator? Rotameter The most common unit of measure for liquid pressure or level is... inches of water The temperature at which the moisture in the air will become saturated and begin to be deposited as condensation is... Dew Point a circuit having the resistance of 100 ohms and an applied voltage of 48 volts will consume ____________ of power. 48/100=.48(48)=23.04watts When checking the calibration of a differential pressure transmitter you find that it renders readings at the 25%, 50%, and 75% test points which are substantially higher than anticipated. This would indicate that the instrument probably has... Square root extraction the symbol "TE1002" would most likely represent a... Thermocouple Loss of signal from a compensation lead of a smart temperature transmitter with a three wire RTD will usually cause an output condition which will be... Dependent upon the setting of the failure mode. Temporary information storage is usually done in RAM An absolute pressure gauge that has been properly calibrated at sea level will read ____________at an elevation of 5000 feet. 12.23 psi The component of a gauge which produces the movement which allows the indication of pressure is the... bourdon tube The manipulated variable is the part of the process that is adjusted to close the gap between the set point and the value of the _____________ variable controlled To re-write the configuration information contained in a smart transmitter's EEPROM the ________________ command must be activated on the HART communicator. SEND On the Kelvin scale the freezing point of water is ... 273.15 deg. K A temperature transmitter that has a range of -100 to +450 degrees F. What will be the output of the transmitter if the input is 137 degrees F? 237/550=.4309(16)+4=10.89mA A pressure switch, PSL1022, which has been calibrated with a set point of 14 psi has its normally closed contact connected in series with 120volt AC circuit. If the voltage measures across the contact is 0 volts it would be a an indication that the pressure applied to the switch is... Below 14 psi The simplest device for measuring pressure is the... Manometer A relay with 2 sets of contacts would be designated with the letters... DPST Atransmitter which produces an output of 4-20mA for an input of 75-275 degrees F would have a gain of... .08mA/uf What is the value of a resistor that is color coded, yellow - orange - oragne - silver? 43000ohms +/-10% An advantage to using a bubbler for level measuring applications would be that... A bubbler doesn't require either elevation or suppression to function properly. Acolumn of mercury 14.7" high wold produce a pressure of... 7.22psi The number 77 in octal is equal to __________ in decimal. 63 The voltage drop in a conductor is proportional to.... circuit length A gauge used in a highly dynamic process may require the use of a ___________ to limit damage to the gauge. restrictor A device which is used to indicate the mechanical position of an actuator would be identified with the letters... ZIT Calibration equipment must be __________________ in order to be used to calibrate process instruments. more accurate than the instruments to be calibrated and periodically recalibrated A primary standard used for the measurement of pressure would be... A manometer The simplest electrical temperature measurement device is a thermocouple A DC milivlt signal could be used to provide anINPUT to a(n) __________ transmitter PH The differential pressure produced across an orifice plate will be proportional to... The square of the percentage of maximum flow rate