AW Gear Meters RT-15 - Manual (Page 26)

RT‐15 Flow Monitor
Operation and Programming Manual
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by Analog Devices. The minimum output is trimmed to 4.00mA by the device manufacturer. Consult the
manufacturer’s data sheet for AD421 for complete specifications regarding offset tolerance.
When entering or editing the value, the digit being edited blinks starting with left‐most digit. Select the
digit to edit using the SEL button (or magnetic switch). Use the UP or DN button (or magnetic switch) to
increase or decrease the variable value. When the desired value displays, use the ENT button (or
magnetic switch) to store the programmed value and advance to the next variable.
ANALOG POINT
This variable is used to “point” to an output assignment for the analog output. The output can be
assigned to represent one of three functions:
 RATE A GT (#00)
 RATE A PL (#01)
 TOTAL A (#02)
The RT‐Ex displays a number corresponding to the output assignment indicating the current function of
the analog output. The default assignment for the ANALOG POINT is RATE A GT (#00). RATE or TOTAL
assignments produce an output ranging from the MA OFFSET value (4‐10 mA) for a zero value to 20 mA
for the maximum programmed flow rate or total.
Use the SEL button (or magnetic switch) to select the output assignment; use the ENT button (or
magnetic switch) to store it.
ENTER VALUE AT MAX MA’S
This scaling variable is used to set the maximum mA output (20mA.) to a corresponding rate value
producing an output ranging from the MA OFFSET value (4‐10 mA) for a zero value to 20 mA for the
maximum programmed flow rate. The entry corresponds with the KFR, decimal location, and
engineering units for RATE A GT. The initial value is a rate of 10 HZ.
When you enter or edit the value, the digit you are editing blinks starting with left‐most digit. Select the
digit to edit using the SEL button (or magnetic switch). Use the UP or DN button (or magnetic switch) to
increase or decrease the variable value. When the desired value displays, use the ENT button (or
magnetic switch) to store the programmed value and advance to the next variable.
LIMITS Display Mode
The RT‐15 has two programmable limit outputs: L1 and L2. The LIMIT display shows the function to
which each limit is assigned, the value in engineering units at which each limit becomes active or
changes state, and the current status of the limit outputs. The RT‐15 displays limit values using the KFR
or KFT, decimal location, and engineering units corresponding to the limit assignment.