Walchem WebMaster, Инструкция по эксплуатации

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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 pressure transmitter sends out 4 mA at 0.00 psi, 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 pressure transmitter sends out 20 mA at 100 psi, 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 “psi”, “Bars”, etc.
High-High Alarm Limit
Type in the text box the process value above which you a want a high-high alarm to occur.
High Alarm Limit
Type in the text box the process value above which you a want a high alarm to occur.
Low Alarm Limit
Type in the text box the process value below which you want a low alarm to occur.
Low-Low Alarm Limit
Type in the text box the process value below which you want a low-low alarm to occur.
Alarm Dead Band
Type in the text box the dead band to be used for each alarm set point.
Damping
Damping is applied to the input by taking a running average of the readings of the input signal
over the time frame specified by the damping setting (0-60 seconds)
.
The averaged reading is
displayed and used for control. Type in the text box the desired time frame.