Extech Instruments Oyster-10 Скачать руководство пользователя страница 9

 

Oyster10-en-US_v2.3   9/15 

9

Troubleshooting an Electrode Problem 

Symptom

 

Cause

 

Recommended Solution

 

Long response time or 
reading drift 

Clogged Junction 

Soak in 4.07 M Potassium Chloride (KCl) 
@ 60

o

C for 30 minutes. Replace 

electrode if necessary. 

Strong Alkaline measurement  Soak in 0.1 M HCL overnight 
Deteriorated Gel layer of pH 
sensing membrane 

Replace electrode 

Protein coating on electrode 
surface 

Soak in 1 gm Pepsin dissolved in 100ml 
of 0.1 m HCL for 30 mins. or as needed 

Oil, paint, dyes, suspended 
solids on sensor 

Rinse electrode alternately with materials 
solvent (briefly) then a buffer 7.00 

Organic solvents are coating 
sensor 

Organic mole fraction has to be less than 
50% to assure reasonable readings. Limit 
time of measurement. Keep probe in the 
7.0 buffer between readings. 

Dehydrated membrane 

Read solution for dry bulb below 

Dry Bulb 

Long term storage without 
wetting  

Soak electrode tip in wetting cap filled 
with 1ml 7.00 buffer for 24 to 48 hours 

Static Charge 

Wiping electrodes 

Rinse electrode in 7.0 buffer and blot. Do 
no wipe electrode. 

Same readings in 
different buffers and 
samples 

Cracked or broken bulb 

Replace electrode. Use bulb guard. Avoid 
plunging electrode to bottom of container 
and spinning bars. A wetting cap will 
protect bulb between measurements. 

Erratic LCD display 

Samples have low ionic 
strength (lacks salt); e.g. 
distilled, de-ionized, boiled, 
lake water (high pressure) 

For each 50 ml of sample add 1 drop 
(50uL) of SAT.KCL No alteration in pH 
will occur by inert KCL. 

 
 
 
 

 

 

 

 

 

www.ponpe.com

contact:
sale@ponpe.com

Содержание Oyster-10

Страница 1: ...USER GUIDE pH mV Temperature Meter Model OYSTER 10 www ponpe com contact sale ponpe com...

Страница 2: ...lude diagnostic displays MIN MAX readings audible alerts 5 point buffer recognition Auto Manual temperature compensation This instrument is shipped fully tested and calibrated and with proper use will...

Страница 3: ...calibrates itself to the buffer s pH value 1 Connect the pH electrode to the meter s BNC connector input 2 Open the top half of the meter to an appropriate viewing position 3 Power the meter with the...

Страница 4: ...s complete unplug the electrode and rinse it in distilled water 8 Place approx 1 ml of pH 4 solution in the wetting cap before replacing it mV ORP Measurements 1 Note that calibration is not required...

Страница 5: ...e MAX MIN memory cycle the meter power External Temperature Offset Adjustment The Offset Adjustment is used to fine tune the temperature reading of the external temperature probe This procedure is for...

Страница 6: ...er or rinse solution shake the electrode with a snap motion to remove residual drops of solution 6 Use part of the sample buffer to be tested next as a rinse solution whenever possible 7 When calibrat...

Страница 7: ...ure readings LCD viewing angle 90 o to 180 o Over range Indication Displays Power 9 volt battery or optional AC adapter Auto Power OFF After 10 minutes of inactivity Low Battery Indication Battery ico...

Страница 8: ...nd federal regulations with regard to battery disposal Never dispose of batteries in a fire Batteries may explode or leak Never mix battery types Always install new batteries of the same type Troubles...

Страница 9: ...be less than 50 to assure reasonable readings Limit time of measurement Keep probe in the 7 0 buffer between readings Dehydrated membrane Read solution for dry bulb below Dry Bulb Long term storage wi...

Страница 10: ...mages FLIR s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Calibrat...

Страница 11: ...it totale de FLIR est limit e la r paration ou au remplacement du produit La garantie d finie ci dessus est inclusive et aucune autre garantie crite ou orale n est exprim e ou implicite Calibrage r pa...

Страница 12: ...entes La responsabilidad total de FLIR est limitada a la reparaci n o reemplazo del producto La garant a precedente es inclusiva y no hay otra garant a ya sea escrita u oral expresa o impl cita Servic...

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