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Your purchase of this
pH
monitor
marks
a
step forward for you into
the
field
of
precision
measurement. Although
this pH monitor is a
complex
and
delicate
instrument, its durable
structure will allow many
years of use if proper
operating techniques are
developed. Please read
the following instructions
carefully
and
always
keep this manual within
easy reach.

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Summary of Contents for Lutron Electronics PH-321M

  • Page 1 Your purchase of this monitor marks step forward for you into field precision measurement. Although this pH monitor is a complex delicate instrument, its durable structure will allow many years of use if proper operating techniques are developed. Please read the following instructions carefully always...
  • Page 2: Table Of Contents

    TABLE OF CONTENTS FEATURES ................3 SPECIFICATIONS .............. 3 FRONT PANEL DESCRIPTIONS ........5 Display ................5 CAL (Enter) Button ............. 5 ESC Button ................ 5 ▼ Button ................5 pH Electrode BNC Socket ..........5 DC 9V Input Socket ............5 Stick Sponge Fix Position ..........
  • Page 3: Features

    FEATURES • Economical cost digital pH meter General purpose applications. Easy operation. • Back light LCD display. • Auto calibration. • Compact size, light weight. • Avaialble for wide applications, such as AQUARIUM, BEVERAGE, FISH HATCHERIES, FOOD PROCESSING, PHOTOGRAPHY, LABORATORY, QUALITY CONTROL, SCHOOL &...
  • Page 4 Calibration Automatically, calibrated by front buttons. * pH 7 calibration. * pH 4 calibration. * pH 10 calibration Power Supply DC 9V via optional external adapter Power Approx. 11 mA Consumption Dimension 89mm x 57mm x 31 mm, (3.5 in x 2.2 in x 1.2 in). Weight 117 g / 0.26 LB.
  • Page 5: Front Panel Descriptions

    FRONT PANEL DESCRIPTION 1. Display 2. CAL (Enter) button 3. ESC button 4. ▼ button 5. pH Electrode BNC Socket 6. DC 9V Input Socket 7. Stick Sponge Fix Position 8. Hanging Holes...
  • Page 6: Ph Calibrating Procedure

    pH CALIBRATING PROCEDURE Calibrating Consideration These pH meter already calibrated by mV signal that simu- lated from the ideal pH Electrode mV output base on 25°C environment. However due to a. An ideal electrode will produce 0 mV at pH 7.00, but most elctrodes are slightly off.
  • Page 7 5. Press “ENTER button” once, the display will flashing several time, the show 7.00 (if show 6.99, 7.01 it is normal), now finish the pH 7.0 calibration procedures. pH 4.00 Calibration 1. Rinse the electrode in distilled water completely. 2. Connect the pH Electrode to the “BNC Socket” and place electrode onto standard buffer pH 4.00 solution.
  • Page 8 pH 10.00 Calibration 1. Rinse the electrode in distilled water completely. 2. Connect the pH Electrode to the “BNC Socket” and place electrode onto standard buffer pH 10.00 solution. 3. Power on the instrument by plugging in the DC 9V adapter in the “DC 9V Input Socket”.
  • Page 9: Calibration Clear

    • During the calibration, the circuit will sensing solution value automatically. If the buffer solution value already beyond 7 ± 2 pH. 4 ± 2 pH, 10 ± 2 pH, the LCD will show “Err”. • Rinse the Electrode in distilled water before change the buffer solution.
  • Page 10: Measuring Procedures

    Press “▼button” once a while with three times, the display will show: Press “ENTER button” once, the display will show following screen once a while, Then return to normal screen and finish the “Calibration Clear” procedures. MEASUREMENT PROCEDURES After the instrument and pH electrode are calibrated, then the unit is now ready for measuring.
  • Page 11: Optional Accessories

    OPTIONAL ACCESSORIES pH Electrode PE-03 General purpose pH electrode with BNC connector. Range: 1 to 13 pH (typical 0 to 14 pH). Epoxy body, Body size: 12 mm dia. x 160 mm. Cable length: 1 meter. pH Electrode PE-11 General purpose & high quality pH electrode with BNC connector.
  • Page 12 DC 9V Power Adapter AP-9VA Input voltage: 100 to 240 ACV, 50/60 Hz. Output voltage: Regulation DC 9V/1 amp. rating max Output plug: round 2.5 mm dia. plug. Plug Converter AP-GTU Convert the input of AP-9VA, AP-9VB from the Germany type to the USA type.

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