Thermo Fisher Scientific TN100 Turbidimeter - Manual (Page 19)

Instruction Manual TN-100/ T-100
14
For Continuous Measurement:
1. Make sure the meter is sitting on a flat and level surface and is in measurement
mode. The display shows the last measured value or “STbY”
2. Place the sample vial in the sample well.
3. Press READ/ENTER key and hold. See Figure 13
4. Wait for the reading to stabilize before rotating the sample vial.
NOTE: During continuous measurement, the display is updated every 2 seconds.
The displayed reading may not be the actual turbidity value. For accurate
measurement, use single-shot measurement.
You can rotate the sample vial for indexing purpose. See Section 8.5 - Indexing a Vial
on page 20 for more information.
5. Once you release READ/ENTER key, the meter automatically performs a single-
shot measurement.
NOTES:
1. After a measurement is completed and the display is updated, a 4-
second recovery time occurs before the meter can perform another
function. If any key is pressed during the recovery time, the meter will
perform the corresponding action at the end of the recovery period.
2. When performing a measurement, if the meter detects stray light
exceeding the amount equivalent to 0.02 NTU in the low range, the
measurement is immediately aborted and an error message [ERR 8] is
displayed. Ensure the vial sits properly into the sample well. Press the
ENTER/READ key to re-do the measurement.
Figure 13: Continuous Measurement
Reading flashes and
updates every 2 seconds
SAMPLE
Unknown
NTU
Place sample
vial into the
sample well
NTU
READ
ENTER
Measurement Mode
Press key and hold