Instruction manual

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High Alarm Limit
Type in the text box the corrosion rate at which you want a high alarm to occur.
Click on the “Submit” button to save the changes.
6.14 Other Inputs
Input
Displays which 4-20 mA inputs have been selected as “Other” in the 4-20 mA input section of the
Start Up page.
Name
Type in the text box a name to describe the device connected to that 4-20 mA input (for example
“Phosphate”).
Present Value
This displays the current reading of the device, using the mA signal from the device, the span of
the 4-20 mA signal defined in “4 mA =” and “20 mA =” below, and the units of measure defined
below.
Present mA
This displays the present raw mA signal from the device. This is helpful in troubleshooting.
Status
This displays whether the present value is “Normal”, or in a “Low Alarm” or “High Alarm”
condition. Possible status messages are; Normal (everything is OK), Sensor Error (the sensor
signal is not valid), Over Range (between 20 and 21 mA), Under Range (between 3.9 and 4.0 mA),
High Alarm, Low alarm or Circuit Board Failure. See section 8.1 for a complete description of
error messages.
4 mA =
Type into the text box the value that corresponds to a 4 mA output signal from the device. For
example, if the phosphate analyzer sends out 4 mA at 0.00 mg/l of phosphate, type in 0.00. Any
value between –10,000 and 10,000 is acceptable.
20 mA =
Type into the text box the value that corresponds to a 20 mA output signal from the device. For
example, if the phosphate analyzer sends out 20 mA at 100 mg/l of phosphate, type in 100. Any
value between –10,000 and 10,000 is acceptable.
Units
Type into the text box the units of measure that you want to use for the device connected to that
input. For example, you could use “ppm”, “mg/l phosphate”, etc.
Low Alarm Limit
Type into the text box the value for that input below which you want a low alarm to occur. Any
value between –10,000 and 10,000 is acceptable.