Fluid Components International MT91 Manual Operation - Manual (Page 7)

CHAPTER 3 - OPERATION FLUID COMPONENTS INTL
Doc. No. 003185 Rev. B 3 - 7 Model MT91 Multipoint Flowmeter
Selecting Units of Measure
Internally, the unit will always work in units of standard feet per second (SF/S) and degrees Fahrenheit (°F). The
user can choose from several types of units for display and output scaling. Table 3-2 shows the units of measure and
their abbreviations for temperature and flow.
Table 3-2. Units of Measure and Abbreviations
Temperature Length* Volume* Mass Time
Fahrenheit (°F) feet (SF) cubic feet (SCF) pounds mass (LB) seconds (S)
Celsius (°C) meters (NM) cubic meters (NCM) kilograms (KG) minutes (M)
Kelvin (K) liters (NLP) English ton (TON) hours (H)
Rankine (°R) metric tonnes (TONNE) days (D)
*Length and Volume units are based on FCI standard conditions (70°F and 14.7 PSIA); therefore,
the units are preceded with an S.
A sequence of selections is required to set a new unit of measure for flow. At each step through this process, the
existing unit will be displayed, even if it’s undefined, and the user will be prompted to change it. Only Y or N will be
acceptable responses to the prompts. To properly set new units, complete the menu entries until the new flow unit is
displayed. If the change is only temporary, don’t save any settings during the process.
Note: If only some of the settings in this process are saved, the units of measure may be incorrect after a system
reset or power up.
The output may not conform to the units displayed if after partially completing the selection of new units,
HOME or the hardware reset are used to exit the process.
Ø To set a new unit of measure for flow rate:
1. Go to menu level 2.1.1 (Setup Þ Display Þ Flow). Select from the following three options: 1 Velocity,
2=Volume, or 3=Mass and then follow the corresponding procedure below.
w To set velocity units:
2. Select 1=Velocity.
3. The program will prompt the user to change the units of length first. Select from the following units: 1=Feet or
2=Meters.
4. The program will prompt the user to change the units of time next. Select from the following units: 1=Seconds,
2=Minutes, 3=Hours, 4=Day. The units of velocity will display, press any key to exit to menu level 2.1.1.
w To set volume units:
2. Select 2=Volume.
3. The program will prompt the user to change the units of volume first. Select from the following units:
1=SCF - standard cubic feet, 2=NCM - normal cubic meters, or 3=NLP - normal liter per.
4. The program will prompt the user to change the units of area. Select from the following units: 1=Square Feet or
2=Square Meters.
5. The user will be prompted to change the value of the area. Enter a numeric value for the area.
6. The user will be prompted to change the units of time. Select from the following units: 1=Seconds, 2=Minutes,
3=Hours, or 4=Day. The selected units of volume will display, press any key to exit to menu level 2.1.1.