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205 pH / Temperature Measuring Instrument Instruction Manual 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com...
General Information General Information Please read this document through carefully and familiarise yourself with the operation of the product before putting it to use. Keep this documentation to hand so that you can refer to it when necessary. Symbols and what they mean Symbol Meaning Remarks...
Only the maintenance and service work described in the documentation should be carried out. Please adhere to the steps specified. For safety reasons, only original spare parts from Testo should be used. Ensure correct disposal: Disposal of defective rechargeable batteries and spent batteries at the collection points provided.
Incoming goods checks during transport, cheese production and in bakeries. testo 205 is n n ot s s uitable f f or d d iagnostic m m easurements i i n t t he medical s s ector.
3. Product Description 3. Product Description 3.1 Display and control elements D D i i s s p p l l a a y y O O N N / / H H O O L L D D : : On/Off switch, P P r r o o b b e e s s o o c c k k e e t t w w i i t t h h holds readings...
3. Product Description 7 3.3 Storage cap The storage cap filled with electrolyte gel is used to store the probe between measurements. The probe is only immediately ready to operate if stored in electrolyte gel. If the probe has been out of the electrolyte gel for a longer period of time, it must be stored in the electrolyte gel for approx.
5. Operation 5. Operation 5.1 Switching on/off Switch on instrument: ON/HOLD - All segments light up briefly and the instrument changes to the measurement mode. Switch off instrument: Keep pressed. ON/HOLD 5.2 Setting instrument The following functions can be set: Function Description Setting options...
5. Operation 9 5 Select calibration method (1P, 2P or 3P): Confirm selection: MODE If 1 or 2 point calibration has been set: Select calibration points (4, 7 or 10, and 4 7 7 or 7 1 1 0): Confirm selection: MODE 6 Switch Auto Off on (On) or off (OFF): Confirm selection:...
5.4 Calibrating instrument Please also adhere to the instructions supplied with the buffer solution (Testo buffer: see label). The instrument is switched on and is in the measurement mode. 1 Open calibration mode: - Calibration point (4, 7 or 10) is shown and CAL flashes.
5. Operation 11 - Once calibration is complete, the amount of the gradient and offset value is shown. If the amount of the gradient value is less than 50mV / pH or the amount of the offset value is greater than 60mV, the pH electrode is spent and must be replaced.
7. Questions and Answers 7. Questions and Answers Question Possible causes Possible solution Readings instable. Static charge. Rinse off pH electrode with tap water or low concentration soap water. Air cushion from measurement Shake pH electrode in a electrode gets into measurement downward direction like tip.
Name Item no. Probe module incl storage cap with electrolyte gel 0650 2051 Storage cap 205 with electrolyte gel, 1 off 0554 2051 Storage cap 205 with electrolyte gel, 3 off 0554 2052 pH buffer solution (4.01pH), 250ml, 1 off 0554 2061 pH buffer solution (4.01pH), 250ml, 3 off...
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Test Equipment Depot - 800.517.8431 99 Washington Street, Melrose, MA 02176 TestEquipmentDepot.com 0973.2051/01/Sky/dr/30.03.2004...
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