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Summary of Contents for Extech Instruments pH300
- Page 1 User's Guide Digital pH Meter Model pH300...
- Page 2 Extech pH meter. For best results, please read the entire manual before use. The pH300 meter measures pH, mV, and temperature parameters. The built-in microprocessor provides automatic calibration, automatic temperature compensation, data storage, and self-diagnostics. The meter can recognize up to 13 types of pH standard buffer solutions.
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Page 3: Meter Description
2. Measurement reading 3. 888 (Stored data serial number), M+ (measurement to be stored icon), RM (reading to be recalled icon) 4. Unit of measure 5. Temperature reading 6. Stable measurement icon 7. Calibration icons 8. Low battery icon pH300 V1.0 7/09... -
Page 4: Keypad Description
From the RECALL mode, press and hold the ENTER key for at least five (5) seconds. The LCD display will show ‘CLR’ indicating that all of the stored readings have been erased. The unit will automatically return to the normal measurement mode after approximately 2 seconds. pH300 V1.0 7/09... - Page 5 M will appear on the LCD. For a 10.01pH Calibration, only the circled H will appear (Low, Medium, and High). For all other applications, a 3-Point Calibration is recommended. Always perform a 3-Point Calibration on new probes and probes that have been in use for long periods. This maximizes measurement slope linearity. pH300 V1.0 7/09...
- Page 6 Such measurements are sometimes used in the electrical power and petrochemical industries. Set these parameters to ON only if necessary, otherwise leave these parameters in the OFF state. pH300 V1.0 7/09...
- Page 7 1. From the P7 menu, use the CAL or the M+/RM keys to select ON (reset the factory default settings) or OFF (cancel edit) 2. Momentarily press MODE to move to the first parameter (P1) or press ENTER to return to the normal measurement mode pH300 V1.0 7/09...
- Page 8 For abnormal readings, try calibrating again; if the problem persists replace the Electrode. The user can also try resetting the meter to factory default conditions per Parameter P7 (detailed in an earlier section). Electrode life can be shortened by heavy use, extreme conditions, and improper maintenance. pH300 V1.0 7/09...
- Page 9 From the P2 menu, use the CAL or the M+/RM keys to select a 0, 10, or 20 minute Auto Power OFF time Momentarily press MODE to move back to Parameter P1, or press ENTER to return to the normal measurement mode pH300 V1.0 7/09...
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Page 10: Specifications
Case: 10 x 8.3 x 2” (255 x 210 x 50mm) / 1.7 lbs (790g) Quality / Safety certification ISO9001, CE and CMC Working Conditions F (5 to 35 ℃) Environment temperature 41 to 95 ≤ 85% Environmental humidity IP rating IP57 Dustproof and waterproof pH300 V1.0 7/09... -
Page 11: Warranty
Warranty EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) 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. - Page 12 V1.0 7/09...
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