MRC PH-207 Operation Manual
our purchase of this pH
METER marks a step
forward for you into the
field of precision
measurement. Although
this pH METER 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.
PH METER
Model : PH-207
OPERATION MANUAL
3,
Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529
mrc@mrclab.com
MRC. 7.18
TABLE OF CONTENTS
1. FEATURES............................................................ 1
2. SPECIFICATIONS................................................... 2
3. FRONT PANEL DESCRIPTION..................................4
4. PH CALIBRATING PROCEDURE...............................
.
5
4-1 Calibrating Consideration 5
4-2 Requirin
g
Equipment for calibration................... 5
4-3 Two Points Calibration...................................... 5
4-4 Sin
g
le Point Calibration..................................... 6
5. PH TEMPERATURE COMPENSATION........................6
5-1 Manual temperature compensation.................... 7
5-2 Automatic temperature compensation................7
6. MEASURING PROCEDURE.......................................7
6-1 PH Measurement..............................................7
6-2 mV Measurement............................................. 8
6-3 Temp. Measurement.........................................8
7. CIRCUIT ADJUSTING PROCEDURES WHEN
CHANGING THE TEMP. PROBE...............................
.
11
8. MEASURING CONSIDERATION............................... 12
9. RS232 PC SERIAL INTERFACE.................................12
10. BATTERY REPLACEMENT........................................ 14
11. OPTIONAL ACCESSORIES.......................................
.
14
1. FEATURES
* Microprocessor circuit assures high accuracy and provides
special functions and features.
* Super large LCD display with contrast adjustment for best
viewing angle.
* Dual function meter's display.
* Heavy duty & compact housing case.
* Records Maximum, Minimum and Average readings with
RECALL.
* Data hold.
* Auto shut off saves battery life.
* Operates from OO6P DC 9V battery.
* RS 232 PC serial interface.
* Used the durable, long-lasting components, including a
strong, light weight ABS-plastic housing case.
* Multi-measurement : PH, mV, Temperature.
* Temperature function for 蚓 or 蚌 be selected by push
button on front panel easily.
* Show the PH & temperature values on the same LCD
display at the same time.
* High input impedance avoid measuring error.
* Wide manual temperature compensation range from
0 蚓 to 100 蚓, high accuracy.
* Auto temperature compensation range via. the external
optional temp. probe.
* The values of "Manual temp. compensation" are reading
from the LCD display directly, no errors & easy operation .
* With the optional temp. probe for automatic temp.
compensation of PH function or temp. measurement.
* The instrument build in mV(milli volt) measuring
function, letting you make ion-selective, ORP, and other
precise mV measurement.
1
* Wide applications: water conditioning, aquariums, beverage,
fish hatcheries, food processing, photography, laboratory,
paper industry, plating industry, quality control, school &
college, water conditioning.
2. SPEC
IFICATION
S
2-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display Dual function meter's display, 13 mm(0.5")
Super lar
g
e LCD display with contrast
adjustment for best viewing angle.
Measurement PH 0 to 14 PH
mV 0 to 1999 mV
Temperature 0 to 65 蚓
32 to 150 蚌
Input 10 12ohms.
Impedance
Temperature Manual 0 to 100 蚓, adjusting by
Compensation push button on front panel.
For Automatic With the optional TEMP.
PH Range probe, 0 to 65 蚓.
Calibration Built in SLOPE(PH 4) & CAL.(PH 7)
For calibration VR ( multi-turns potentiometers )
PH Range on front panel, high reliability.
Data hold To hold the reading values on display.
Memory Records Maximum, Minimum and Average
Recall readings with RECALL.
Power off Auto shut off saves battery life, or manual
off by push button.
Data Output RS 232 PC serial interface.
2
Over input Indication of "- - - -".
indication
PH Any combination PH electrode with
Electrode BNC connector/
Operating 0 蚓 to 50 蚓(32 蚌 to 122 蚌).
Temperature
Operating Max. 80% RH.
Humidity
Sampling Time Approx. 0.8 second.
Power Supply 006P DC 9V battery(Heavy duty type).
Power Current Approx. DC 5.7 mA.
Weight 270 g/0.59 LB (included batteries)
Size ( meter ) 180 x 72 x 32 mm(7.1 x 2.8 x1.3 inch).
Standard Instruction manual...........1 PC.
Accessories
Optional Carrying case
Accessories pH electrode, PE-01, PE-11, PE-03.
ATC temp. probe, TP-07.
PH 4 buffer solution, PH-04.
PH 7 buffer solution, PH-07.
2-2 Electrical Specifications (23 5 蚓)
Measurement Range Resolution Accuracy
PH 0 to 14 PH 0.01 PH 0.03 PH + 2 d)
mV 0 to 1999 mV 1 mV (0.5% + 1 d)
Temp.(蚓) 0 to 65
蚓
0.1
蚓1蚓
( 0 - 50蚓 )
4
蚓
( > 50蚓 )
Temp.(蚌) 32 to 150
蚌
0.1
蚌
.8
蚌
(32 - 122蚌)
.2
蚌
( > 122蚌 )
*
PH accuracy are based on after calibration, meter only.
*
Spec. tested under the environment RF Field Strength les
s
than 3 V/M & frequency less than the 30 MHz only.
3
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