YSI 5200A
171
YSI 5200A
170
occurred. Svr Hold time is one (1) minute. After Svr Hold time expires, the
control system is reset. If sensor is reporting control low condition the dose
on time will be for two (2) minutes and not the remaining 45 seconds of the
dose up time prior to the Svr Hold.
-
Conductivity Control Low Range Low message remains at the
menu
when the conductivity system is disabled when a control low relay is energized.
Power cycle the 5200A to clear the control low range message at the Msg’s menu.
-
AquaManager data log displays 5200A conductivity values in µS to 0.00
resolution.
-
Active dosing timers are reset after systemwide events. Systemwide events
de-energize relays. Example - Conductivity dose up relay is configured for
two (2) minutes. Energized dose up relay de-energizes when 5200A goes into
Svr Hold. The dose up relay had been energized for 15 seconds before the Svr
Hold occurs. Svr Hold time is one (1) minute. After Svr Hold time expires,
the control system is reset. If the sensor is reporting a control low condition,
the dose on time will be for two (2) minutes and not the remaining 45 seconds
of the dose up time prior to Svr Hold.
DO
Salinity & Temperature Compensation for DO Readings
In order to report accurate DO values, the salinity and temperature of the monitored
water must be known. Temperature is measured by the temperature sensor located
on the probe assembly. Salinity is either calculated by the conductivity sensor - see
Salinity page 176 or enter a user defined ppt value in the DO menu. If the salinity
system is enabled, then the DO salinity menu is not available to configure.
Notes:
-
When conductivity is enabled, salinity is ALWAYS calculated by the conduc-
tivity sensor and this value is used to calculate DO mg/L.
-
Disabling conductivity requires that a ppt value be entered in the 5200A DO
sensor menu. In this menu, enter the salinity value of the water being moni-
tored. The acceptable salinity input range is 0-50 ppt.
-
5561 probe/cable users should ALWAYS disable the conductivity system since
there is no conductivity sensor in use to accurately compute a salinity value.
-
Changes to salinity affect the DO mg/L value.
-
Changes to salinity do not affect the DO %Sat value.
-
The DO system uses the temperature sensor value regardless if temperature
is enabled.
It is important to verify that the temperature sensor is measur-
ing accurately.
Configuring the 5200A
Menus →Sensor Setup→DO Set point menus
Two Range Controls for DO
The 5200A DO system has two low and two high control ranges. This dual range
allows for more control over oxygen levels in the system stream. Example - DO
range low system becomes active, an air injection system energizes when properly
wired and configured to relay #1. The DO level continues to fall. Range low 2 system
becomes active and a pure oxygen injection system energizes when properly wired
and configured to relay #2.
Configure DO Sensor System
Before configuring Conductivity system 1) See - “Use AquaManager to configure
system inputs and outputs” - page 146. AND 2) See Control modes [Set point
Control Mode and Alarms - page 150 and PID control mode - 155.]
1. Connect Probe assembly - 60.
2. Wire relay output device(s) to local instrument, or any networked 5X00
instrument - page 46.
AND/OR
2. Wire relay output device(s) to REM - see IOEM/REM Safety and Instal-
lation guide>Chapter 3>Step 4>Wire REM Relay Outputs.
3. Enter DO Sensor Setup menu
Menus → System → Sensor Setup → DO
4. Use
▲
▼
to scroll and highlight submenus.
Configuring the 5200A
