98
Programming Features
To enable Set Point Sampling:
1.
From the Main Menu, select
OPTIONS> ADVANCED OPTIONS > SETPOINT SAMPLING.
2.
Highlight
SETPOINT SAMPLING
using the
UP
and
DOWN
soft keys, then press
SELECT
.
3.
Highlight the desired sampling trigger (see
), then press
SELECT
.
4.
Highlight either
SAMPLE ON HIGH CONDITION
or
SAMPLE ON LOW CONDITION.
5.
Press
CHANGE CHOICE
to enable or disable the sampling trigger for this condition.
Note:
You must log rainfall to use set point sampling on a rainfall condition; likewise, you must log
flow in order to implement set point sampling on a flow rate of change. If you forget, you are
reminded when the program begins.
6.
Enter the desired high or low trigger point using the numeric keypad, then press
ACCEPT
.
7.
Enter a deadband value (see
Setting the Deadband on page 90
) or, if programming
for Flow Rate Of Change or Rainfall, enter a time interval within which the flow or
rainfall change must take place.
Sample on High Condition and Sample on Low Condition can be enabled at the same
time. There is no limit to the number of sampling triggers that can be enabled at one time.
B.21 Stormwater
A stormwater monitoring program designed specifically to meet the NPDES stormwater
requirements is built in to the Sigma 950 Flow Meter. Rainfall is monitored with an
optional Rain Gauge. A connection is then made from the flow meter Sampler Interface to
an automatic liquid sampler.
A typical stormwater program might be configured to activate when a storm causes a
level of at least 3 in. (7.6 cm) in the outfall channel and 0.10 in. (2.5 mm) of rainfall within
30 minutes. Or, it might be desirable to activate the program if either the rainfall occurs or
the channel level exceeds the limit. Any combination of rainfall and level conditions can
be used to activate a stormwater program. Specific requirements can vary, however, from
state to state. Consult state regulatory groups for recommendations on stormwater permit
requirements for specific applications.
1.
To configure the Stormwater program in the flow meter, proceed as follows:
2.
From the Main Menu, select
OPTIONS > ADVANCED OPTIONS > STORM WATER.
3.
Highlight
STORM WATER
on the Advanced Options Menu, then press the
SELECT
.
4.
Press
CHANGE CHOICE
to enable Storm Water, then press
ACCEPT
.
5.
Select a Start Condition:
Analog Input Channel 1
High and/or Low condition, deadband
Analog Input Channel 2
High and/or Low condition, deadband
Analog Input Channel 3
High and/or Low condition, deadband
Analog Input Channel 4
High and/or Low condition, deadband
Analog Input Channel 5
High and/or Low condition, deadband
Analog Input Channel 6
High and/or Low condition, deadband
Analog Input Channel 7
High and/or Low condition, deadband
Table 39 Sampling Triggers
Sampling Trigger
Settings
Содержание Sigma 950
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Страница 6: ...4...
Страница 20: ...18 Introduction...
Страница 34: ...32 Basic Programming Setup...
Страница 50: ...48 Sensor Installation...
Страница 82: ...80 Maintenance...
Страница 83: ...81 Appendix A Program Flow Charts Figure 22 Overview of Basic Program Menus...
Страница 84: ...82 Program Flow Charts Figure 23 Setup Flow Chart...
Страница 85: ...83 Program Flow Charts Figure 24 Options Flow Chart...
Страница 86: ...84 Program Flow Charts Figure 25 Alarms Menus Flow Chart...
Страница 87: ...85 Program Flow Charts Figure 26 Calibration Menus Flow Chart Page 1...
Страница 88: ...86 Program Flow Charts...
Страница 102: ...100 Programming Features...
Страница 106: ...104 Primary Devices Head Measurement Locations...
Страница 126: ...124 SCADA Modbus System Guidelines...