ST100 Series Flow Meter
INSTALLATION
Fluid Components International LLC
11
HART
output
• Command 9 – Slot 0, 2, 4: Flow or Two point average Flow.
• Command 9 – Slot 5: Temperature or Two point average Temperature
• Command 9 – Slot 6: Pressure
Fieldbus output
• Flow AI Block – Two point average Flow
• Temperature AI Block – Two point average Process Temperature
• Pressure AI Block - Pressure
• Process Transducer block – index 13, PRIMARY_VALUE (Average FLOW)
• Process Transducer block – index 15, SECONDARY_VALUE (Average TEMPERATURE)
• Process Transducer block – index 19, Quaternary_VALUE (Pressure)
Modbus output
• Command 3 – Two point average Flow
Two point average Temperature
Pressure, available on STP models
Totalizer
Troubleshooting
The “Service Mode” for both HART and F
oundation
Fieldbus provide access to the individual sensor output values.
The 102A electronics transmitter can recognize a disconnected flow element. If this condition is detected, the instrument indicates a fault
condition and displays process variable data from the sensor that remains connected to the transmitter. The fault self-corrects when the sen-
sor is re-connected.
ST102A and STP102A Flow Element Installation
The Model ST/STP102A is a dual-element averaging system operating through a single transmitter. The ST/STP102A Flow Element offers the same
process connections that are available on the basic ST100. The ST/STP102A has two probe assemblies. Available process connections include:
• Compression Fitting
• Retractable Packing Gland
• Fixed NPT
• Flanged
All flow element mounting and securing instructions for the selected process connections are identical to the ST100. These details are provided in
the previous process connection mounting sections. Each flow element is identified with the instrument serial number followed by a -1 or -2.
For example:
Serial no: 409486-1
Description - flow element no.1
Serial no: 409486-2
Description - flow element no.2
Installed Point Locations
The flow element point locations for a two point averaging system are based from the US EPA – Method 1 Traverse Point recommendations.
This method is applicable to gas streams flowing in ducts, stacks, and flues with inside diameters greater than 12 inches. The recommended
point locations for a two point averaging system are shown in the diagram below.
Locate and secure the flow elements into position using (0.146 x Pipe I.D. + 0.50 inches) as the location dimension from the pipe I.D. to the
end of the flow element (Fig. 5).
