Pen type, separate electrode
SOIL PH METER
Model : PH-220S
Y
our purchase of this
SOIL PH METER marks a
step forward for you
into the field o
f
precision measurement.
A
lthough this METER is
a complex and delicate
instrument, its durable
structure will allow
many years of use i
f
proper operating
techniques are
developed. Please read
the following
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
TABLE OF CONTENTS
1. FEATURES................................................................1
2. SPECIFICATIONS......................................................1
3. FRONT PANEL DESCRIPTIONS...................................3
3-1 Display............................................................... 3
3-2 Power button ( button ).................................▲ 3
3-3 Hold button ...................................................... 3
3-4 Display reverse button ( button )....................▼ 3
3-5 pH electrode BNC socket..................................... 3
3-6 BNC protection cover...........................................3
3-7 Battery compartment/Cover................................ 3
3-8 pH electrode handle........................................... 3
3-9 pH electrode sensing head................................... 3
3-10 pH electrode BNC plug...................................... 3
3-11 pH electrode protection bottle............................
.
3
4. pH CALIBRATING PROCEDURE..................................
.
4
4-1 Calibrating Consideration.....................................
.
4
4-2 Requiring Equipment for Calibration......................4
4-3 Calibration procedures....................................... 4
5. MEASURING PROCEDURE..........................................5
6. REPLACEMENT OF BATTERY......................................5
7. OPTIONAL ACCESSORIES..........................................6
1. FEATURES
* Complete set with pen pH meter, soil pH electrode,
pH 4.0 /pH 7.0 standard buffer solution.
* Spear Tip pH electrode ( included ), ideal for
penetration pH measurement into soil, meats, cheese
and other type of measurements requiring sample
penetration. The electrode features a very durable
glass measuring spear packaged in a rugged virtually
unbreakable epoxy body.
* Separate soil pH electrode, easy for general purpose
usage and remote measurement.
* Auto calibration for pH 4, pH 7 or pH 10.
* Build in reverse display button.
* Data hold.
* Auto power off.
* Compact size, light weight.
* Optional carrying case.
* Water resistance on the front panel.
* Application : Agriculture, Gardening, Food
industrial, Education, School, Colleges, Laboratory,
Industrial and Quality control.
2. SPECIFICATIONS
2-1 Meter
Display LCD, size : 20 mm x 28 mm.
* User can reverse the display direction
by push button.
Measurement 0 to 14 pH x 0.01 pH
Range
Resolution 0.01 pH
1
Accuracy ± 0.07 pH(pH5 to pH 9)
± 0.1 pH(pH4 to pH4.9, pH9.1 to pH10)
± 0.2 pH(pH1 to pH3.9, pH10.1 to pH13)
* 23± 5℃
* After calibration.
Input 10^12 ohms.
Impedance
Temperature Not necessary to make adjustment.
Compensation
Sampling Approx. 0.8 second.
Time
Hold Function To freeze the display reading value.
Calibration Auto calibration,
method pH 7, pH 4 ( or pH 10 )
pH electrode BNC connector.
connector
Operating 0 to 50 ( 32 to 122 )℃℉
Temperature
Operating Less than 80% RH.
Humidity
Power Supply DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
Power Approx. 4.8 mA.
Consumption
Dimension Meter :180 x 40 x 32 mm ( 7.1 x 1.6 x 1.3 inch ).
Electrode : Body size : 12 mm dia. x 160 mm.
Electrode cable length : approx.. 1000 mm.
Weight 220 g/0.48 LB (included electrode).
2
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