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3700 Portable Samplers
Section 3 Programming Guidelines
Example: Time-Paced Composite Sampling (Continued)
21. Enter the start time and date: "6:00" on June 20.
22. After you properly install the sampler, press the
After this messages displays briefly, the sampler will automatically return to the standby state.
The first line of this display indicates the number of the upcoming sample event and the total number of programmed
samples. The second line indicates the scheduled time of the upcoming event followed by the current time.
When the time to the next sample event has elapsed and the sampler has initiated the sample event, the sampling
cycle begins.
When the pump reverses for the pre-sample purge, the second line disappears. At the end of the pre-sample purge,
the pump runs forward to deliver the sample, and the second line appears on the display. This display remains
through the end of the post-sample purge.
At the end of the sample event, the display changes to indicate the number and time of the next event. The lower right
corner reports the current time.
The cycle repeats for the remainder of the sampling routine.
This display appears when the routine is complete. It reports the status of the routine ("DONE"), the total number of
sample events, and the current time and date.
3-36
TAKE FIRST SAMPLE AT
6
:00
20-06
START SAMPLING
PROGRAMMING SEQUENCE
COMPLETE . . .
. . . STANDBY . . .
10:40:23
19-JUN-04
SAMPLE 1 OF 48
AT 6:00
5:50:43
SAMPLE 1 OF 48
SAMPLE 1 OF 48
PUMPING 250 ml
SAMPLE 2 OF 48
AT 6:15
6:00:33
SAMPLE 2 OF 48
↓
↓
DONE . . . 48 SAMPLES
6:10:35
21-JUN-04
Example Calibration shows how to calibrate the sampler for a
200-ml sample volume. You must enable the Calibrate Sampler
configure option in the configure sequence before the calibration
displays shown below appear.
Even without calibrating, the 3700 Sampler delivers accurate
sample volumes. If your sample volumes vary significantly with
the entered values, check the suction line first. Be sure the line
slopes continuously downhill and is draining completely after
JUN
key to run the program.
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