Extech Instruments ExStik EC500 User Manual Download Page 12

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EC500-en-US_v2.9 7/20

Cleaning Recommendations

When cleaning the probe, take care not to scratch or damage the sensing surface or the platinized
electrode surfaces.

Contaminant

Cleaning Solution

Instructions

Water soluble substances

Deionized water

Soak or scrub with a soft
brush. Recondition in 4 or 7
buffer for 1 hour.

Grease & Oil

Warm water and household
detergent

Soak or scrub with a soft
brush, maximum of 10
minutes. Rinse thoroughly
with DI water, recondition in 4
or 7 buffer for 1 hour.

Heavy grease & Oil

Alcohol

Maximum of 5 minute soak,
scrub with a soft brush. Rinse
thoroughly with DI water,
recondition in 4 or 7 buffer for
1 hour.

Lime and hydroxide coatings

10% acetic acid

Soak until coating dissolved,
maximum of 5 minutes. Rinse
thoroughly with DI water,
recondition in 4 or 7 buffer for
1 hour.

Please Note:

Since the EC500 does not have a refillable pH reference electrolyte chamber, it is

important not to soak the electrode in the above solutions for more than the recommended times. To
do so may cause a reference potential shift, which will cause degradation in performance or failure.

www.

.com

[email protected]

1.800.561.8187

Summary of Contents for ExStik EC500

Page 1: ...User Manual ExStik EC500 pH Conductivity TDS Salinity Temperature Meter www com information itm com 1 800 561 8187 ...

Page 2: ...on and conductivity electrodes Before the first use or after storage soak the electrode in tap water or pH 4 buffer solution for about 10 minutes White KCL crystals may be present in the cap or on the electrode This is to be expected depending on the length of time in storage These crystals will dissolve while soaking the electrode or they can be rinsed away with tap water For best results calibra...

Page 3: ... RECALL button 5 ON OFF button 6 Electrode Collar 7 pH Conductivity Electrode Note The Electrode cap is not shown LCD Display 1 Bargraph display 2 Measurement units 3 Main display 4 Range calibration and low battery indicators 5 Temperature display 6 Renew indicator 7 Reading hold indicator www com information itm com 1 800 561 8187 ...

Page 4: ...e Measurement 1 Press the ON button display during the turn on diagnostics 2 Depress and hold the MODE HOLD key to scroll to the desired measurement mode 3 Insert the electrode into the sample making sure that the electrodes are completely submersed 4 Slowly stir the solution with the electrode to remove air bubbles if in the Conductivity TDS or Salinity mode 5 If in the Conductivity TDS or Salini...

Page 5: ...rned on or when changing measurement function to TDS Note In the Salinity mode the ratio is 0 4 to 0 6 auto To change the ratio while in the TDS measurement mode ppm or mg l 1 Press and release the CAL RECALL button twice in succession The stored ratio will appear in the display 2 Press the MODE HOLD button to increase the ratio value in steps of 0 1 3 When the desired ratio is displayed press and...

Page 6: ... the CAL RECALL button depressed momentarily press the ON OFF button CAL RECALL button The unit will power on with temperature displayed in the new units Data Hold Mode Press the MODE HOLD button to hold freeze a reading in the display The meter will enter the Note This also stores the reading Press the MODE HOLD button again to return to normal operation Auto Power OFF The auto power off feature ...

Page 7: ...minder to calibrate pH and will turn off when the pH electrode is recalibrated The reminder does not affect function in any way RENEW Display is not performing to expected specifications If cleaning and recalibration does not cause the RENEW icon to disappear replace the probe see optional accessories on the last page of this manual The RENEW display appears as a result of the pH electrode slope f...

Page 8: ...nges keep the existing calibration data just the symbols are removed Calibration of all three ranges must be performed during one power on period for all three range calibration symbols to appear See Reset Calibration Data to clear all calibration data from the meter Note The meter allows for a 1 2 or 3 point calibration If calibration is done for more than one point the lowest value standard shou...

Page 9: ...de Press and hold the ON OFF key for 4 seconds Change Measurement Mode On Any Press and hold the MODE HOLD key for at least 2 seconds the modes will scroll by until the key is released Enter Cond TDS Ratio On TDS ppm or mg l Press and release the CAL RECALL key twice in quick succession Change Cond TDS Ratio On TDS ratio Momentary press of the MODE HOLD key each key press increases the ratio by 0 ...

Page 10: ...Ratio 0 4 to 0 6 auto Conductivity ATC 2 0 per o C Conductivity ATC Range 32 0 F to 140o F 0 0 C to 60 0o C Temperature Range 23 0 F to 194o F 5 0 C to 90 0o C Temperature Resolution 0 1 up to 99 9 1 100 Temperature Accuracy 1 8 F 1 C from 23 to 122 F 5 to 50 C 5 4 F 3 C from122 to 194 F 50 to 90 C Accuracy Conductivity 2 full scale TDS 2 full scale Salinity 2 full scale Measurement Memory 25 tagg...

Page 11: ...is not to be used for 60 days or more remove the battery and store separately Electrode Replacement 1 To remove an electrode unscrew and completely remove the electrode collar turn the collar counter clockwise to remove 2 Gently rock the electrode from side to side pulling it downwards until it disconnects from the meter 3 To attach an electrode carefully plug the electrode into the meter socket n...

Page 12: ... 4 or 7 buffer for 1 hour Heavy grease Oil Alcohol Maximum of 5 minute soak scrub with a soft brush Rinse thoroughly with DI water recondition in 4 or 7 buffer for 1 hour Lime and hydroxide coatings 10 acetic acid Soak until coating dissolved maximum of 5 minutes Rinse thoroughly with DI water recondition in 4 or 7 buffer for 1 hour Please Note Since the EC500 does not have a refillable pH referen...

Page 13: ...ards Unit will not calibrate in conductivity mode Dirty probe Clean conductivity probe See cleaning instructions Unit will not calibrate in conductivity mode Damaged conductivity probe Replace electrode see reorder information Unit will not calibrate in conductivity mode Trapped air bubbles Tap or stir to release air bubbles Unit will not turn on Batteries are low or dead Replace batteries Unit wi...

Page 14: ...rand products we sell We offer NIST traceable calibration for most of our products Contact us for information on calibration and repair availability refer to the contact information below Annual calibrations should be performed to verify meter performance and accuracy Product specifications are subject to change without notice Please visit our website for the most up to date product information Co...

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