Lutron Electronics PCD-431 Manual de usuario
Pen type, all in one, IP-67
CONDUCTIVITY METER
Model : PCD-431
Your purchase of this
CONDUCTIVITY METE
R
marks a step forward for
you into the field of
precision measurement.
Althou
g
h this METER is a
complex and delicate
instrument, its durable
structure will allow many
years of use if proper
operatin
g
techniques are
developed. Please read
the followin
g
instructions
carefully and always keep
this manual within easy
reach.
OPERATION MANUAL
TABLE OF CONTENTS
1. FEATURES................................................................
.
1
2. SPECIFICATIONS......................................................
.
2
3. FRONT PANEL DESCRIPTIONS................................... 5
3-1 Battery compartment/Cover.................................
.
5
3-2 Display................................................................5
3-3 Power Button......................................................
.
5
3-4 Hold Button, Unit Button......................................
.
5
3-5 REC Button ( / Button ).................................℃℉ 5
3-6 Sensing Electrode........................................... 5
3-7 Protection Cover.................................................. 5
4.MEASURING PROCEDURE..........................................
.
6
4-1 Conductivity measurement...................................
.
6
4-2 TDS measurement............................................... 7
4-3 Data hold............................................................
.
8
4-4 Data record ( Max., Min. reading )........................
.
8
4-5 Change Temp. unit , .....................................℃℉ 9
4-6 Auto power off management................................
.
9
5.CALIBRATION.......................................................... 9
6. REPLACEMENT OF BATTERY.................................... 10
7. OPTIONAL ACCESSORIES..........................................
.
10
1. FEATURES
* All in one pen type conductivity meter provides fast,
accurate readings with digital reading.
* Conductivity measurement ( uS, mS ) or TDS
( Total Dissolved Solids, ppm ) can be selected.
* Conductivity : Two ranges, 2,000 uS, 20.00 mS.
* TDS : Two ranges, 20,000 ppm, 2,000 ppm.
* Carbon rod electrode for long life.
* Build in temperature sensor, ATC ( auto temperature
compensation ).
* Temperature measurement, , .℃℉
* IP67, water proof and protection.
* LCD with two displays show conductivity and Temp.
value at same time.
* Data hold function for freezing the desired value.
* Auto power off to save the battery life.
* Records max. and min. value with recall.
* Microcomputer circuit, intelligent function, high accuracy.
* Compact size, light weight.
* Power supply by DC 1.5 V battery ( UM4/AAA ) x 4 PCs,
* Available for wide applications, such as aquarium,
beverage, fish hatcheries, food processing,
photography, laboratory, quality control, school &
colleges, swimming pools, water conditions.
1
2. SPECIFICATIONS
Display LCD, size : 20 mm x 28 mm.
Measurement * Conductivity ( uS, mS )
* TDS ( Total Dissolved Solids, ppm )
* Temperature ( , )℃℉
Ranges
Conductivity:
* two ranges
2000 uS, 20.00 mS
* auto range TDS :
2,000 ppm 20,000 ppm
Accuracy ± ( 2% FS + 1 d )
* 23 ± 5 ℃* FS : full scale
Temperature Automatic from 0 to 60 (32 - 140 ),℃℉
Compensation with temperature compensation factor
variable between 0 to 5.0% per C.
Conductivity Carbon rod electrode for long life.
Probe
Structure
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
Sampling Approx. 0.8 second.
Time
Circuit Custom one-chip of microprocessor LSI
circuit.
Power off Auto shut off saves battery life or
manual off by push button.
* Power will off automatically after
10 min., if no button be pressed.
Operating 0 to 50 ( 32 to 140 ).℃℉
Temperature
Operating Less than 80% RH.
Humidity
2
Power Supply DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
Power Approx. 5.7 mA.
Consumption
Dimension 190 x 40 x 40 mm
( 7.5 x 1.6 x 1.6 inch ).
Weight 171 g/0.38 LB.
Standard Instruction Manual.........................
.
1 PC
Accessories
Power off Auto shut off saves battery life or
manual off by push button.
* Power will off automatically after
10 min., if no button be pressed.
Standard Instruction Manual.........................
.
1 PC
Accessories
Optional * Soft carrying case with sash
Accessories ( 210 x 80 x 50 mm ), Model : CA-52A
* Hard carrying case
( 280 x 195 x 65 mm ), Model : CA-06
* 1.413 mS Conductivity Standard
Solution, Model : CD-14A
3
2-2 Electrical Specifications (23±5 )℃
A. Conductivity
Range Measurement Resolution Accuracy
2000 uS 0 to 2000 uS 1 uS ± (3% F.S.+1d)
20 mS 2 to 20.00 mS 0.01 mS * F.S. - Full scale
* Auto range.
* Temperature Compensation :
Automatic from 0 to 60 ( 32 - 140 ), with temperature℃℉
compensation factor variable between 0 to 5.0% per C.
* mS - milli Simens * uS - micro Simens * 23± 5℃
B. TDS ( Total Dissolved Solids )
Range Measurement Resolution Accuracy
2,000 ppm 0 to 1,320 ppm 1 ppm ± (3% F.S.+1d)
20,000 ppm 1,320 to 13,200 ppm 10 ppm * F.S. - Full scale
* Auto range.
* Temperature Compensation :
Automatic from 0 to 60 ( 32 - 140 ), with temperature℃℉
compensation factor variable between 0 to 5.0% per .℃
* ppm - parts per million * 23± 5℃
C. Temperature
Function Measuring Range Resolution Accuracy
℃0 to 60℃℃ 0.1 ℃0.8 ℃
℉32 to 140℉℉ 0.1 ℉1.5 ℉
* @ 23± 5℃
*
Above specification tests under the environment RF Field Stren
g
th less than 3 V/
M
& frequency less than 30 MHz only.
4
3. FRONT PANEL DESCRIPTION
3-1 Battery compartment/Cover
3-2 Display
3-3 Power Button
3-4 Hold Button, Unit Button
3-5 REC Button ( / Button )℃℉
3-6 Conductivity Electrode
3-7 Protection Cover
5
4. MEASURING PROCEDURE
4-1 Conductivity measurement
1)Turn on the meter by pressing the " Power Button "
( 3-3, Fig. 1 ) momentarily.
* Press the " Power Button " ( 3-3, Fig. 1 )
momentarily again will turn off the meter.
The " Display " ( 3-2, Fig. 1 ) will show the unit as :
uS 0
xx,x ℃
Now the meter is ready for the conductivity measurement.
2)Hold the meter by hand and immerse the " Sensing
Electrode " ( 3-6, Fig. 1 ) immersed wholly into the
measured solution. Shake the " Sensing Electrode " to
let the electrode's internal air bubble drift out from the
sensing Electrode.
" Display " ( 3-2, Fig. 1 ) will show the conductivity
mS ( uS ) values, at the same time the left bottom
display will show the Temp. value of the measured
solution.
6
When make the
measurement should
immerse the " Sensing
Electrode " immersed
wholly into the measured
solution.
4-2 TDS measurement
Same procedures as above " 4-1 Conductivity
measurement " but should select the measuring unit to
" ppm " at first, the procedures are following :
Press " Unit Button " ( 3-4, Fig. 1 ) continuously at
least two seconds until the " Display " show the unit
" ppm " instead of " uS ", then release the button.
Now the meter is ready for TDS ( Total Dissolved Solids )
measurement.
Remark :
If the measurement value > 9990 ppm, then the last
digit will present in the low display as :
For example :
1235 12350 ppm
0 ppm
7
4-3 Data Hold
1)During the measurement, press the " Hold Button "
( 3-4, Fig. 1 ) momentarily to hold the measured
value. The LCD will show a " HOLD " symbol.
2)Press the " Hold Button " once again to release the
data hold function.
4-4 Data Record ( Max., Min. reading )
1)The data record function records the maximum and
minimum readings. Press the " REC Button " ( 3-5, Fig. 1 )
momentarily to start the Data Record function,
shows " REC " on the display.
2)With the " REC " symbol on the display.
a)Press the " REC Button " ( 3-5, Fig. 1 ) momentarily,
the " REC MAX " symbol along with the maximum
value will appear on the display.
b)Press the " REC Button " ( 3-5, Fig. 1 ) momentarily
again, the " REC MIN " symbol along with the
minimum value will appear on the display.
* When display shows " REC MAX " or " REC MIN ",
press the " Hold Button " ( 3-4, Fig. 1 )
momentarily will delete the max. ( min. ) value,
the display will show the " REC. " only and
execute the memory function continuously.
c)To exit the memory record function, press the
" REC " button for 2 seconds at least. The display will
revert to the current reading, not show " REC "
indicator.
8
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