Hach BioTector B3500ul, Руководство пользователя

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Page 105
8.2.7 Autocal Program
TIME 00:00 ▪ TIME (00:00 by default) schedules the Zero & Span Calibration
or Check reactions time (in HR:MIN) for the weekdays if any is
programmed below.
MONDAY S CHECK
TUESDAY Z CAL
WEDNESDAY ZS CAL
THURSDAY -- --
FRIDAY -- --
SATURDAY -- --
SUNDAY -- --
▪
In this menu, Zero and/or Span Calibration reactions and/or
Check reactions are scheduled if programmed on a particular
day of the week. Note that by default, there will be no scheduled
zero and span cycles in the system. See Section
2.3
Calibration Menu for details.
▪
If CAL (CALIBRATION) is programmed, system generates the
zero and span adjust figures which are applied to the reaction
results. If CHECK is programmed, system does not generate
any zero or span adjust figures.
▪ The meaning of the abbreviations used in this menu are as
follows:
- - No function is programmed.
S Span reactions only.
Z Zero reactions only.
ZS Zero reactions followed by Span reactions.
CAL Calibration reactions
CHECK Check reactions.
8.2.8 4-20mA Program
OUTPUT MODE DIRECT ▪
OUTPUT MODE specifies the 4-20mA outputs operation. This
parameter is programmed as: DIRECT (direct mode by default),
BASIC (basic mode), STREAM MUX (stream multiplex mode) or
FULL MUX (full multiplex mode).
▪
In DIRECT mode, each 4-20mA output channel is dedicated to a
specific stream and result type.
▪ In BASIC mode, 4-20mA signals of zero and span
calibration/check reactions are also sent to the 4-20mA channels
programmed as STREAM 1.
▪
In STREAM MUX and FULL MUX modes, specific channels are
dedicated to periodically change their value in steps to indicate
the stream number and result type. This periodic operation
reduces the number of required 4-20mA channels significantly. If
STREAM MUX and FULL MUX modes are required, please
contact manufacturer or distributor for the complete protocols
and the details of required system configuration modifications.
CHANNEL 1 STREAM 1 TOC
CHANNEL 1 25µgC/l INST
CHANNEL 2 STREAM 1 TIC
CHANNEL 2 100µgC/l INST
……………………… …………………… ……
CHANNEL 4 --- TIC
CHANNEL 4 100µgC/l AVRG
▪ In CHANNEL 1 STREAM 1 TOC setting, the first parameter
defines the type of 4-20mA output which can be programmed as:
STREAM and MANUAL reaction results, CAL (zero & span
calibration results), CAL Z (zero results) and CAL S (span
results). The second parameter is the data type which can be
programmed as TOC, TIC, TC, VOC, BOD and COD. In TIC &
TOC analysis mode, TC is the sum of TIC and TOC.
▪
In CHANNEL 1 25µgC/l INST setting, the first
parameter (e.g. 25µgC/l) is the full scale of the channel. The
second parameter could be programmed as INST
(Instantaneous) or AVRG (Average).
▪
If INST is selected, the result for the selected stream is updated
at the end of each reaction. If AVRG is selected, the average
result of the 24 hour reactions is updated for the specific stream
at the AVERAGE UPDATE time programmed in Sequence
Program, Average Program menu.
▪
When ANALYSIS TYPE is changed in Analysis Mode menu,
modifications on the 4-20mA result type and the channel full
scale may be required.