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USER MANUAL

Heavy Duty pH and ORP Meter

Model 407227 Meter and 407728 Kit

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Summary of Contents for 407227

Page 1: ...USER MANUAL Heavy Duty pH and ORP Meter Model 407227 Meter and 407728 Kit ...

Page 2: ...adjustments are conveniently located on the front panel The 407228 is the kit that includes the 407227 meter pH electrode temperature probe protective holster jacket with stand and carrying case An optional ORP electrode 67500B is available This device is shipped fully tested and calibrated and with proper use will provide years of reliable service Please visit our website www extech com to check ...

Page 3: ... unit of measure for temperature RECORD Press to track the MAX MIN and AVG readings RECALL Press to view the MAX MIN and AVG readings MTC Manual Temperature Compensation Refer to the dedicated Manual Temperature Compensation section for details and used when programming the manual temperature compensation Refer to the dedicated Manual Temperature Compensation section 9 Slide switch to select Manua...

Page 4: ... Place the other end of the thermometer into the solution under test 4 Perform a pH calibration or take a pH measurement Manual Temperature Compensation Note For Manual compensation an external thermometer is required not the one supplied with the meter Perform these steps before each use or when the temperature of the solution under test changes 1 Place a thermometer in the solution under test an...

Page 5: ... Place the electrode in the pH 4 or pH 10 buffer solution 7 Turn the SLOPE pH potentiometer until the display reads 4 00 or 10 00 8 Rinse the electrode in distilled water 9 Repeat as necessary Note that if the adjustments described above do not yield a 4 0 7 0 or 10 0 pH reading the electrode may need replacing pH MEASUREMENTS 1 Connect the pH electrode to the meter s BNC input jack 2 Connect the ...

Page 6: ...will appear on the LCD 3 Press the RECALL key to view the lowest MIN reading recorded since the RECORD key was first pressed The MIN indicator will appear on the LCD 4 Press the RECALL key to view the average AVG reading recorded since the RECORD key was first pressed The AVG indicator will appear on the LCD 5 Press the RECORD key again to exit this mode 6 Note that the Auto Power OFF feature is d...

Page 7: ...ction point for the disposal of electrical and electronic equipment Other Battery Safety Reminders Never dispose of batteries in a fire Batteries may explode or leak Never mix battery types Always install new batteries of the same type PC Interface For streaming of data to a PC USB port via the RS232 output jack the optional 407001 USB kit RS232 to USB cable is required Contact Extech for a copy o...

Page 8: ...dashes on display Sampling time Approximately 0 8 seconds Operating conditions 0 C 50 C 32 F 122 F 80 RH Power supply 9V battery power consumption 5 7mA approx Weight 270g 0 59 lbs including batteries Dimensions 180 x 72 x 32mm 7 1 x 2 8 x1 3 Optional accessories ORP Electrode 67500B AC adaptor 156119 120V 156221 220V Range Specifications Measurement Range Resolution Accuracy of reading pH 0 14 pH...

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