Yokogawa - Model STARDOM FCN-RTU - Low Power Consumption Autonomous Controller

• Modular type PLC/RTU
• Low power consumption (1.6W to 2.9W)
• Wider operation temperature (-40 to 70°C*)
• Wide voltage range power supply (10 to 30 V DC)
• One Ethernet, three RS-232, and one RS-422/RS-485
• Multiple built-in I/O on CPU module
• Improved file system stability in case of power failure

High Performance with Low Power Consumption

Depending on the application, the FCN-RTU can reduce its power consumption even further; various functions such as automatic power saving mode make this possible.

Thrives in Remote and Inhospitable Locations

With the FCN-RTU, there is no need to worry about conditions in remote locations.  The FCN-RTU thrives at temperatures as extreme as -40°C and +70°C and at altitudes up to 3,000 m.

Wide Voltage Range Ideal for Solar Power Applications

The FCN-RTU`s wide 10 to 30 V DC power supply voltage range is well suited for solar power applications where the voltage will vary depending on the solar battery status.  This controller also features an analog input for solar battery status monitoring that makes it possible to extend the life of the batteries.

Gas Flow Computer Functionality

AGA 3 (Flow measurement using orifice plate as primary meter)
AGA 7 (Flow measurement using turbine as primary meter)
AGA 8 (Compressibility factor of natural gas; Gross/Detail Method)
AGA 9 (Flow measurement using ultrasonic as primary meter)
AGA 10 (Gas Speed of Sound Calculation)
AGA 11 (Measurement of Natural Gas by Coriolis meter)
V-Cone flow calculation
GPA2172-96 (Heating Value calculation)

Liquid Flow Computer Functionality

Gasolines:
Motor gasoline and unfinished gasoline blending stock with a base density range between approximately 50 °API and 85 °API. This group includes substances with the commercial identification of:

• premium gasoline
• motor spirit
• motor gasoline
• naphtha
• catalytic cracked gasoline
• gasoline
• clear gasoline
• catalyst gas
• aviation gasoline
• unleaded gasoline
• low lead gas
• alkylate
• reformulated gasoline

Jet Fuels:
Jet fuels, kerosene, and Stoddard solvents with a base density range between approximately 37 °API and 50 °API. This group includes substances with the commercial identification of:

• kerosene
• jet fuel A
• jet kerosene
• white kerosene
• aviation jet A
• aviation turbine fuel
• Stoddard solvent
• JP-2
• JP-8 

Fuel Oils:
Diesel oils, heating oils and fuel oils with a base density range between approximately -10 °API and 37 °API. This group includes substances with the commercial identification of:

• No. 6 fuel oil
• fuel oil PA
• low sulfur fuel
• LT fuel oil
• diesel fuel
• fuel oil
• fuel oils LLS
• premium diesel
• gas oil
• heating fuel
• No. 2 furnace oil
• furnace oil
• auto diesel
• No. 2 burner fuel

Lubricating Oils –
Lubricating oil is considered to conform to the commodity group Generalized Lubricating Oils if it is a base stock derived from crude oil fractions by distillation or asphalt precipitation. For the purpose of API MPMS 11.1 and TRULS, lubricating oils have initial boiling points greater than 700°F (370°C) and densities in the range between approximately -10 to 45°API.

Natural and Drip Gasolines
Natural and drip gasolines are paraffinic substances and are not actually refined products. Drip gasoline is the paraffinic condensate from gas well production. Drip gasoline is a mixture of natural gas liquids, primarily butanes, pentanes, hexanes, and heptanes. Aromatic natural gasoline should be considered part of the Generalized Refined Products commodity group.

TRULS supports all of these drip and aromatic natural gasoline substances that should be considered part of the Generalized Crude Oil commodity group provided their density lies in the appropriate range.

Reformulated Fuels
API has investigated volume correction factors for reformulated fuels. Included in this study were gasoline

feedstocks containing any one of the following oxygenates: MTBE, ETBE, DIPE, and TAME. The addition of minor proportions of ethers to gasolines, up to 2.7 wt% oxygen, such as permitted in many national fuel

specifications, does not significantly change the correction factors from the Generalized Refined Products table.

The Special Applications procedure, which requires laboratory testing of a representative sample, was also found satisfactory for all of the gasolines, oxygenates, and mixtures studied.

JP-4
API MPMS 11.1 guidelines recommend:

• In the general case, represent JP-4 as a Generalized Crude Oil.
• In cases where the buyer and seller agree that a greater degree of precision is desirable, determine the coefficient of thermal expansion of the various blends and use the special application tables. The above recommendations apply only to JP-4 which is a blend. Other jet fuels such as JP-2 and JP-8 or materials that have densities at 60°F of 787.5 kg/m³ or greater are well represented as a Generalized Refined Product.

Pure Compounds
Pure paraffinic compounds (C5+) are well represented as Generalized Crude Oils within the range of the correlations. Non-paraffinic pure compounds (C5+) are not well represented as either Generalized Crude Oils or Generalized Refined Products; however, thermal expansion factors can be determined and these pure compounds can be treated as a Special Application via configuration of the API MPMS 11.1 library used by TRULS. It is recognized that there are some pure components whose densities put them in the range of this Standard and the standard(s) for light hydrocarbons. The two standards give results that are of comparable accuracy but are slightly different. It is up to the contracting parties to decide which is more appropriate to use.

Gasohol
Gasohol is a mixture of gasoline and 10 vol% ethanol. Based on data (available at API) obtained at the University of Missouri – Rolla, gasohol is best represented as a special application with a 60°F thermal expansion factor (α60 ) of 714.34×10-6 °F-1.