Lutron Electronics PH-321M Operation Manual
pH MONITOR
Model : PH-321M
L11'i.u1ron PH-321 M
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pH
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PH METER:
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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Your purchase of this
pH monitor marks a
step forward for you into
the eld 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.
2 3
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 .................................................. 5
Hanging Hall ...................................................................... 5
pH CALIBRATING PROCEDURE ........................................ 6
Calibrating Considration .................................................... 6
Requiring Equipment for Calibration .................................. 6
Calibration Procedures ...................................................... 6
Calibration Clear ................................................................ 9
MEASURING PROCEDURES ......................................... 10
OPTIONAL ACCESSORIES .............................................11
3
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 & COLLEGES, SWIMMING POOLS, WATER
CONDITONS.
SPECIFICATIONS
Display LCD size : 31 mm x 31 mm.
LCD with back light, easy read.
Measurement
Range
0 to 14 pH x 0.01 pH
Resolution 0.01 pH
Accuracy ± 0.07 pH (pH 5 - pH 9).
± 0.1 pH (pH 4 - pH 10).
± 0.2 pH (pH 1 - pH 3.9, pH 10.1 - pH 13).
* Main instrument only
Input
Impedance
10^12 ohms.
Temperature
Compensation
Not necessary to make adjustment.
Sampling Time Approx. 1 second.
Operating
Temperature
0°C to 50°C (32°F to 122°F)
Operating
Humidity
Less than 80% RH.
4 5
Calibration Automatically, calibrated by front buttons.
* pH 7 calibration.
* pH 4 calibration.
* pH 10 calibration
Power Supply DC 9V via optional external adapter
Power
Consumption
Approx. 11 mA
Dimension 89mm x 57mm x 31 mm,
(3.5 in x 2.2 in x 1.2 in).
Weight 117 g / 0.26 LB.
pH electrode
(Optional)
Any connector pH Electrode with
BNC connector.
Standard
Accessories
Instruction Manual - 1 PC
Stick sponges - 2 PC’s
Optional
Accessories
pH electrodes :
pH electrode,
pH electrode,
Standard buer solutions :
pH 7.0 buer solutions,
pH 4.0 buer solutions,
DC 9V 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 plug of AP-9VA from
the Germany type to USA type
* Appearance and specifications listed in this brochure are
subject to change without notice.
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