Hach PAH500 Bedienungsanleitung Seite 15

Section 4 Operation
4.1 User navigation
Refer to the SC1000 Controller User Manual for keypad description and navigation information.
4.2 Configure the sensor unit
1. Select SENSOR SETUP > [select sensor] > CONFIGURE.
2. Select an option.
Option
EDIT NAME
SCALE FACTOR Adjusts the PAH measurement by a multiplier (0.01 to 5.00, default: 1.00).
SELECT UNITS
SIGNAL
AVERAGE
LOG SETUP
SET FILTER
AC FREQUENCY Selects the frequency of the AC power supplied to the controller (50 or
CAL DAYS
Description
Sets the name of the sensor. The name of the sensor shows on the
controller display and in the log files. The default name is the model name
followed by the last four digits of the serial number.
PAH = calibrated PAH × SCALE FACTOR
Use the SCALE FACTOR setting to adjust for interferences or sensitivity to
different fluorescent species.
Sets the measurement units that show on the controller display and in the
log files. Options: ppb, μg/L (default), ppm or mg/L
Sets the number of measurements used to calculate the average
measurement shown on the display. Options: 1 (default) to 15.
When SIGNAL AVERAGE is set to 1, signal averaging is disabled.
When SIGNAL AVERAGE is set to 2 or more, an average reading shows
on the display. For example, the measurement on the display is equal to the
last and previous measurement divided by 2 when SIGNAL AVERAGE is
set to 2.
Signal averaging corrects for reading fluctuations caused by bubbles and/or
larger particles in the sample.
SENS INTERVAL—Sets the time interval at which the PAH reading (e.g.,
μg/L) is saved to the data log. Options: DISABLED, 60 seconds, 1, 5, 10,
15 (default) or 30 minutes, 1, 2 or 6 hours. The measurement interval is
60 seconds.
RAW INTERVAL—Sets the time interval at which the sensor raw reading
(mV) is saved to the data log. Options: DISABLED, 60 seconds, 1, 5, 10,
15 (default) or 30 minutes, 1, 2 or 6 hours
Sets a time constant to increase signal stability. The time constant
calculates the average value during a specified time—1 (no effect, default)
to 10 minutes (average of signal value for 10 minutes). The filter increases
the time for the sensor signal to respond to actual changes in the process.
60 Hz). Default: 60 Hz
Sets the calibration interval. Options: 0 (disabled) to 999 days (default:
365 days).
Note: A CAL OVERDUE warning shows on the controller display when the number of
days since the sensor was calibrated is more than the calibration interval. If CAL
DAYS is set to 0, a CAL OVERDUE warning will not occur.
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