User Guide ExStikTM Model RE300 Waterproof ORP Meter Patent Pending 500 0 MV 1000 TM RE300 ORP
ExStikTM Description 1 Front Panel Controls 1. Battery compartment cap 2. LCD Display 3. MODE button 4. CAL button (unused on RE300) 5. ON/OFF button 6. Electrode collar 7. Electrode 2 3 4 5 (Electrode cap is not shown) 6 7 3 Display Description 1. Reading 2. Units 3. Bargraph 4. Data Hold 5. Scale 6. Low Battery 2 5 1 4 6 2 RE300 V4.
Operation Getting Started White KCL crystals may be present on the electrode. These crystals will dissolve in the soak or they can be simply rinsed with tap water When the RE300 is turned on, it enters the Automatic Calibration mode. ‘SELF’ and ‘CAL’ will appear on the LCD while calibration is in progress. After the calibration is complete, ‘SELF’ and ‘CAL’ will extinguish and both the main display and bargraph will read ORP in mV units.
Measurement and Display Considerations • • • If the unit appears to be locked (display frozen). It is possible that the Data Hold mode has been inadvertently accessed by pressing the MODE button. Simply press the MODE button again or turn the meter off and restart if the display appears frozen. If the meter does latch up and no button presses revive it, remove the batteries and restart. Note that if the batteries are removed, any stored readings will be discarded.
Battery Replacement 1. 2. 3. Twist off the battery compartment cap Replace the four (4) 2032 batteries observing polarity.
Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information.
