Hach 500sc SiO2, Operations

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View data
The analyzer stores a maximum of 18,000 data points. After 18,000 data points are stored, the oldest
data points are overwritten with new data.
1. Select VIEW DATA.
2. Select an option.
Option Description
ANALYZER DATA Shows analyzer status information (refer to Table 2 ).
MEASUREMENT DATA Shows measurement information (refer to Table 3 ).
LOG DATA Selects the data log and/or the event log. DATA LOG—shows the measurement
values. Select start time, number of hours and/or number of readings. EVENT LOG
—shows all analyzer information (e.g. alarms, warnings, configuration changes,
and so on.). Select start time, number of hours and/or number of readings.
Table 2 Analyzer data
Element Definition
CELL TEMP Temperature of the colorimeter cell block heater (ideally 49.8 °C to 50.2 °C (121.64 °F
to 122.36 °F))
REAGENT TEMP Reagent temperature before it enters the colorimeter
AMBIENT TEMP Air temperature inside the electronics area
SAMPLE TEMP Sample pre-heater block temperature (typically 45 °C to 55 °C (113 °F to 131 °F) but
could reach 58 °C (136.4 °F))
AIR PRESS Reagent air pressure in the reagent bottles (ideally 3.95 to 4.10 psi)
LED DUTY CYCLE Depends on condition of colorimeter cell and age of analyzer (typically 7,200 to
40,000 counts)
HEATER DUTY CYCLE Percentage of time the colorimeter heater is on to maintain a constant 50 °C (122 °F)
SAMPLE FLOW Approximate sample flow into the colorimeter, measured during the flush cycle
SAMPLE PRESS 1 Sample pressure before the pre-heater block (ideally 2 to 4.5 psi depending on
incoming sample pressure)
SAMPLE PRESS 2 Sample pressure after the sample pre-heater, which is used to calculate the sample
flow. The sample pressure is almost zero when the flush is set to off and is
approximately 0.2 psi when the flush is on (depends on inlet pressure and flow).
REAGENT 1 Level of reagent remaining
REAGENT 2 Level of reagent remaining
REAGENT 3 Level of reagent remaining
STD SOLUTION Level of standard solution remaining
FAN SPEED The speed of the ventilation fan.
LEAK COUNTS Indication of possible fluid leaks (range 0 to 1023). A count of over 511 indicates a fluid
leak
Table 3 Measurement data
Element Definition
LAST MEAS CHANNEL Last channel measured.
LAST MEAS TIME Time of last measurement.
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