Hach BioTector B7000 User Manual

Page 105
Sample Pump
SAMPLER FORWARD REVERSE
STREAM 1 100s 60s 75s
STREAM 2 100s 60s 75s
STREAM 3 45s 60s
……………………
MANUAL 1 50s 0s
MANUAL 2
MANUAL 3
……………………
CALIBRATION 50s
 BioTector Sample Pump runs forward for the FORWARD time to
bring a fresh sample from the STREAM, MANUAL and/or
CALIBRATION points to the Sample (ARS) Valve. This time
should be long enough to guarantee a fresh sample is injected
into the reactor and any old samples and bubbles are completely
removed from the sample lines.
 BioTector Sample Pump runs in reverse for the REVERSE time
so as to wash and empty the sample lines prior to the next
reaction. The build up of dirt in sample lines is prevented by the
self cleaning technology, where the sample lines are washed
with the acidic liquid from the previous reaction in all systems
fitted with Cleaning Valve and if the Reverse Cleaning cycle is
activated. The recommended time for REVERSE is
approximately FORWARD time plus 15 seconds.
 The REVERSE time for a Manual Valve can only be activated if
a Manual Bypass Valve is installed in the system. Manual
Bypass Valve is used to return the previous sample and the
acidic cleaning liquid into drain.
 If a Sampler is programmed in Stream Program menu, system
automatically shows the Sampler time in this menu. The sampler
time should also be long enough to guarantee that the sampler
chamber is filled with fresh sample.
 When the user programs any SAMPLER, FORWARD and/or
REVERSE times, which exceeds the maximum allowable time,
BioTector generates the required INTERVAL time automatically
in the Reaction Time menu above. The maximum allowable time
is determined by the system from the Oxidation Program 1
settings in System Program menu.
Stream Program
SAMPLER NO
 If a sampler is used with the BioTector, SAMPLER is
programmed (YES). When activated in this menu, the
programmable Sampler time will be displayed automatically in
the Sample Pump menu above.
CONTROL BIOTECTOR
 In multi-stream systems, CONTROL determines the multi-stream
valve sequence to be controlled by either BIOTECTOR or by an
EXTERNAL device.
 If the CONTROL is programmed as EXTERNAL, then both multi-
stream valve sequence and operation ranges have to be
controlled by an external device.
START-UP RANGE 3
 START-UP RANGE (3 by default) defines the range BioTector
will use at the first reaction it starts up with.
 When the COTROL above is programmed as BIOTECTOR in
multi-stream systems, this function is automatically hidden by
the system, if the first RANGE setting for a particular STREAM is
not programmed as AUTO below.
RANGE LOCKED NO
 If RANGE LOCKED (NO by default) is programmed as YES,
BioTector locks the operation range at the defined RANGE
above. In other words, the automatic range change function is
disabled with the YES setting.
 In multi-stream systems, if none of the RANGE setting for
stream sequence below is programmed as AUTO, this function
is automatically hidden by the system.
PROGRAMMED STREAMS 3
 PROGRAMMED STREAMS displays the number of streams
installed and programmed in Output Devices menu.

Hach BioTector B7000 Specifications

General

Brand	Hach
Model	BioTector B7000
Category	Measuring Instruments
Language	English