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b. Manual temperature compensation, pH-AUTOLOCK mode ........... 9

c. ATC/Temp probe, pH NON-AUTOLOCK mode .............................. 10

d. Manual temperature compensation, pH NON-AUTOLOCK mode 10

D. Temperature Measure .................................................................... 10

E. mV Measurements........................................................................... 10

a. mV-AUTOLOCK mode .................................................................... 10

b. mV NON-AUTOLOCK mode ........................................................... 11

pH Calibration Buffer Table ..................................................................... 12

Error Displays and troubleshooting ........................................................ 13

Specifications .......................................................................................... 14

Warranty ................................................................................................. 15

Содержание L20

Страница 1: ...Model L20 Instruction Manual Microprocessor based pH ORP Temperature Bench Top Meter Electro Chemical Devices Inc 1500 N Kellogg Dr Anaheim CA 92807 USA Telephone 1 714 695 0051 www ecdanalytical com...

Страница 2: ...Display 3 B Keys 4 Operational Procedures 5 A Buffer Set Selection 5 B pH Calibration 5 a ATC Temp probe pH AUTOLOCK mode 5 b Manual temperature compensation pH AUTOLOCK mode 6 c ATC Temp probe pH NON...

Страница 3: ...NON AUTOLOCK mode 10 d Manual temperature compensation pH NON AUTOLOCK mode 10 D Temperature Measure 10 E mV Measurements 10 a mV AUTOLOCK mode 10 b mV NON AUTOLOCK mode 11 pH Calibration Buffer Tabl...

Страница 4: ...displays pH or mV and temperature simultaneously along with user prompts and mode indicators The unit prompts the user through calibration and measurement procedures An AUTOLOCK feature for both pH an...

Страница 5: ...he AC 3 adaptor supplied with the instrument to make sure that the AC line voltage is correct If the wrong AC adaptor is supplied notify your ECD representative immediately Installing the Batteries Th...

Страница 6: ...ors 9 LOCK This will indicate that the reading is frozen during AUTOLOCK mode 4 mV Unit and mode indicators 10 EFF This will be displayed if the user is viewing the efficiency of the electrode It is r...

Страница 7: ...event accidental erasing stored memory When the Clear key is pressed all segments of the LCD will be on After about 2 seconds the unit will enter the pH AUTO mode The AUTO and CAL will be on and one o...

Страница 8: ...light up pH icon and AUTO icon light up The buffer set icon will flash 3 Rinse the pH and ATC Temp probes in distilled water and immerse them in the first buffer solution either 7 00 or 6 86 Allow tem...

Страница 9: ...splay the new electrode efficiency b Calibration with manual temperature compensation in the pH AUTOLOCK mode 1 Turn the unit on Press Clear key for 2 seconds all LCD elements will light up The meter...

Страница 10: ...ld Stand key for 5 seconds to calibrate the unit immediately calibrates the first point the selected buffer remains lit up while the remaining two buffers start to flash The unit is ready to be sloped...

Страница 11: ...up Press Mode key until pH icon is on The buffer set icon will flash 3 Rinse the pH probes in distilled water and immerse it in the first buffer solution Adjust the temperature reading to that of the...

Страница 12: ...obe by shaking or stirring the probe 4 Press the Mea key The WAIT icon will start flashing The unit is waiting for a stable reading The display will track the pH value as sensed by the pH electrode an...

Страница 13: ...ectrode to the BNC connector of the unit The MAN icon will light up 2 Repeat steps 2 4 of Measurement with an ATC Temp probe in the pH NON AUTOLOCK mode D Temperature Measure The L20 can measure tempe...

Страница 14: ...TOLOCK In this case use the pH NON AUTOLOCK mode for measurements b Measurement in the mV NON AUTOLOCK mode 1 Connect the optional combination ORP electrode to the BNC connector of the unit 2 Press Mo...

Страница 15: ...00 10 01 0 4 01 6 98 9 46 4 01 7 11 10 32 5 4 00 6 95 9 39 4 01 7 08 10 25 10 4 00 6 92 9 33 4 00 7 06 10 18 15 4 00 6 90 9 28 4 00 7 03 10 12 20 4 00 6 88 9 23 4 00 7 01 10 06 25 4 00 6 86 9 18 4 01...

Страница 16: ...not correct pH electrode slope is off by more than 30 of ideal slope Allow sufficient time for the electrode and ATC Temp probe to stabilize re press Slope key to continue the calibration procedure Ch...

Страница 17: ...range 0 C to 60 0 C pH Electrode Offset recognition 100 mV at pH 7 00 or 108 3 91 7mV at pH6 86 pH Electrode Slope recognition 30 at pH 4 00 4 01 9 18 and 10 01 Input Impedance 1012 Temperature senso...

Страница 18: ...ment shall be limited to a refund in the purchase price or at ECD s discretion to the repair or replacement of any product that proves upon ECD s examination to be defective when returned to the facto...

Страница 19: ...16...

Страница 20: ...1500 N Kellogg Dr Anaheim CA 92807 USA Phone 1 714 695 0051 www ecdanalytical com E0219...