Pacific Research Solutions TDS - Manual (Page 7)

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15 rL-d Alarm Relay Delay Time
The alarm relay delay is the delay time from an alarm to when the relay energizes. This delay can be set
from 0 to 600 seconds. If set to zero, the relay will energize immediately when an alarm is detected. If
the value is set to 10 seconds, an alarm condition would have to exist for a minimum of 10 seconds
before the relay was energized.
16 rL-L Alarm Relay Latch Enable
This function will latch the alarm relay and keep it energized even after the alarm went away. Setting this
value to a zero, will cause the alarm relay to release immediately when the alarm condition goes away.
Setting this value to a one, will not allow the relay to release when the alarm condition goes away
therefore saving the alarm condition. After the relay has latched, it may be released by turning off the
power to the monitor or by simultaneously pressing the up and down buttons in the display mode.
17 dSP Display Reset Time
When the display is in the system setup mode and after the display reset time has expired without any
activity on the keypad, the display will return to the display mode. This feature can be adjusted from 0 to
10 minutes. Setting the display reset to zero will disable the feature. During an alarm condition and you
have been using the “Display Mode” to view other item, the display will return to showing the alarm
condition after the display reset time has expired without any activity on the keypad.
18 PCL Probe Cable Length Adjust
Because this TDS monitor is a highly precision instrument, the length of the conductivity probe cable will
effect the accuracy. To adjust for this problem, you need to enter the length of the extension cable in to
the system to adjust for this error. If you have cut the extension cable to a custom length, it is important
to measure it and enter its length to the nearest 5 foot. As the monitor works best with cables 25 feet or
less, this menu will allow adjustment from 5 to 25 foot cables.
19 P1-C TDS Probe 1 PPM Calibration
This menu item is used to calibrate the number 1 conductivity probe. As the TDS monitor has been pre
calibrated at the factory, probes will vary. To achieve the greatest accuracy, it will be important to
calibrate the conductivity probe of the monitor with a reference solution. When calibrating the monitor,
use a reference solution in the range of 250 PPM to 500 PPM. Make sure the probe is washed in DI
water and air dried before placing into the reference solution. Pay close attention as not to contaminate
the reference solution or let it evaporate as this will effect its accuracy. Place the probe into the reference
solution and adjust the display for the correct reading.
20 P2-C TDS Probe 2 PPM Calibration
This menu item is used to calibrate the number 2 conductivity probe. As the TDS monitor has been pre
calibrated at the factory, probes will vary. To achieve the greatest accuracy, it will be important to
calibrate the conductivity probe of the monitor with a reference solution. When calibrating the monitor,
use a reference solution in the range of 250 PPM to 500 PPM. Make sure the probe is washed in DI
water and air dried before placing into the reference solution. Pay close attention as not to contaminate
the reference solution or let it evaporate as this will effect its accuracy. Place the probe into the reference
solution and adjust the display for the correct reading.