Measuring - TESTO 206 Instruction Manual

5.4 Measuring

Setting up the instrument
Measurement tip made of glass, risk of breakage!
Risk of injury on account of glass parts which remain in the measure-
ment medium.
f
Check measurement tip of pH probe after each measurement for damage.
If large quantities of the electrolyte gel are stuck to the probe
when removed from the storage cap, it is a sign that the gel
is spent.
A new storage cap is needed.
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Clean off the pH probe before and after each measure-
f
ment with low concentration soap water followed by tap
water (water temperature should be below 40 °C).
When using the BNC module, please note the applica-
f
tion information included with the external probe.
After horizontal storage:
Briefly shake the probe in order to release any gas bub-
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bles which may have formed in the probe tip.
1. Carefully remove storage cap.
2. Switch on instrument:
Carry out measurement
Immerse / penetrate probe in the medium to be measured.
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- The measured pH and temperature values are displayed.
The readings are updated twice a second.
Hold readings manually:
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Restart measurement:
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- If Auto-Hold is switched on, AUTO HOLD flashes until
the instrument has found a stable pH reading. The read-
ings are then frozen (AUTO HOLD lights up). If no stable
pH readings have been found within 300s, the measure-
ment is stopped (
Restart measurement:
f
.
ON / HOLD
.
ON / HOLD
ON / HOLD .
and AUTO HOLD light up).
.
ON / HOLD
5. Operation 29