Volumes Dependent On Flow; Sample Volume; Flow Pulses, Analog Input; Ml For Every - Teledyne 4700 Installation And Operation Manual

Isco 4700 Refrigerated Sampler
Section 3 Programming
3.5.11 Volumes Dependent
on Flow?
3.5.12 Sample Volume __ ml
3.5.13 Flow Pulses,
Analog Input

3.5.14 10 ml for Every

__ Pulses
3.5.15 Sample Volume at
20 mA: __ ml
3.5.16 __ Composite Samples
3-18
Note
When using defined samples, be sure to DEFINE SAMPLE
using the Calibrate button. See the example "Defining the
Sample Volume" on page 3-21.
Note
Selecting USE DEFINED SAMPLE will disable bottle overflow
detection.
Time Paced Only – The sampler can vary the sample volume
according to an input from an external flow rate measurement
device, or use a fixed volume at every time interval. To use
variable sample volumes, sometimes called Constant Time
Variable Volume (CTVV) sampling, select YES. To use fixed
sample volumes, select NO.
This screen displays the defined sample volume. Use the Number
buttons to enter the sample volume. Press the Enter button to
accept the displayed value.
Time Paced Only – I f y o u a r e c o l l e c t i n g s a m p l e v o l u m e s
dependent on flow (section 3.5.11), select which type of flow rate
input is provided by the external flow measurement device (see
section 2.8).
Time Paced Only – If you selected FLOW PULSES to determine
the sample volume (section 3.5.13), use the Number buttons to
enter the number of pulses required to deliver 10 ml of liquid.
This value establishes the ratio of flow rate to the sample volume
at each event.
For example, consider a time-paced sampler programmed to
collect a sample every hour and you entered "10 ml for every 5
pulses." If the sampler records 100 pulses over the hour, it will
collect a 200 ml sample (100 pulses ÷ 5 pulses × 10 ml = 200 ml).
Time Paced Only – If you selected ANALOG INPUT to determine
the sample volume (section 3.5.13), use the Number buttons to
enter the sample volume to be collected at the maximum flow
rate, 20 mA. The sampler will linearly scale sample volumes at
flow rates less than maximum.
Single Bottle Only – Use the Number buttons to type the number
of composite samples to take. Press the Enter button to accept
the value.
The sampler calculates the maximum possible number of
samples by dividing the configured bottle size (section 3.3.2) by
the size of each sample volume (section 3.5.12).