Table of Contents
Advertisement
3.5.17 Suction Head
Figure 3-5
Suction Head Height
3.5.18 No Delay to Start
Set Start Time
This screen is displayed only if the liquid detector is turned off
(section 3.3.4). Use the Number buttons to type the suction head
height. Press the Enter button to accept the value.
Suction head height is the vertical distance from the liquid
surface to the pump inlet. To measure the suction head height,
refer to Figure 3-5.
For most applications, Teledyne Isco recommends that you turn
on the liquid detector (section 3.3.4). The sampler will automati-
cally calculate the suction head height, typically resulting in
more accurate and repeatable sample volumes.
Applications that collect samples from a pressurized line are an
exception. Teledyne Isco offers a pressurized line option for the
sampler. Contact the factory for more information.
When using Teledyne Isco's pressurized line option, disable
liquid detection and enter "1" at the suction head screen. Sample
volumes should use the DEFINED SAMPLE option. Refer to
section 3.5.10.
At this screen you have the option to start the sampling program
immediately when you press the green Run Program button, or
delay the sampling program until user-defined start time is met.
To program the sampler to start immediately, use the Next and
Previous buttons to select the NO DELAY TO START option and
press the Enter button.
To set a start time and date, use the Next and Previous buttons
to select the SET START TIME option. Then, press the Enter
button to advance to the next screen (section 3.5.20).
Isco 4700 Refrigerated Sampler
Section 3 Programming
3-19
Advertisement
Table of Contents
