
Transmitter Configuration and Use: Series 1000 and 2000 Transmitters 81
Optional Configuration continued
Required Configuration Optional ConfigurationUsing the TransmitterFlowmeter Startup
8.4 Creating special measurement units
If you need to use a non-standard unit of measure, you can create one special
measurement unit for mass flow and one special measurement unit for volume flow.
8.4.1 About special measurement units
Special measurement units consist of:
• Base unit — A combination of:
- Base mass or base volume unit — A measurement unit that the transmitter already
recognizes (e.g., kg, m3)
- Base time unit — A unit of time that the transmitter already recognizes (e.g., seconds,
days)
• Conversion factor — The number by which the base unit will be divided to convert to the
special unit
• Special unit — A non-standard volume flow or mass flow unit of measure that you want to be
reported by the transmitter
The terms above are related by the following formula:
To create a special unit, you must:
1. Identify the simplest base volume or mass and base time units for your special mass flow or
volume flow unit. For example, to create the special volume flow unit pints per minute, the
simplest base units are gallons per minute:
• Base volume unit: gallon
• Base time unit: minute
2. Calculate the conversion factor using the formula below:
Note: 1 gallon per minute = 8 pints per minute
3. Name the new special mass flow or volume flow measurement unit and its corresponding
totalizer measurement unit:
• Special volume flow measurement unit name: Pint/min
• Volume totalizer measurement unit name: Pints
Note: Special measurement unit names can be up to 8 characters long (i.e., 8 numbers or letters), but
only the first 5 characters appear on the display.
4. To apply the special measurement unit to mass flow or volume flow measurement, select
Special from the list of measurement units (see Section 6.4.1 or 6.4.2).
• Model 1500 AN
• Model 1700 AN
• Model 1700 IS
• Model 2500 CIO
• Model 2700 AN
• Model 2700 IS
• Model 2700 CIO
ConversionFactor
x BaseUnit(s)[]
y SpecialUnit(s)[]
---------------------------------------------=
x BaseUnit(s)[]y SpecialUnit(s)[]=
1 (gallon per minute)
8 (pints per minute)
------------------------------------------------------- 0.125 (conversion factor)=
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