Loviband SensoDirect 150 Manual de usuario
SensoDirect 150
MultiMeter Instrument - Instruction Manual
GB
pH/ORP DO
CD/TDS
22
Table of Contents
1. Specifications .................................................................................. 1
1.1 General Specifications .................................................................... 1
1.2 Electrical Specifications .................................................................. 2
2. Front Panel Description.................................................................. 5
3. pH/mV Measuring and Calibration
Procedure ........................................................................................ 7
4. Conductivity/TDS Measuring and
Calibration Procedure .................................................................. 13
5. DO (Dissolved Oxygen) Measuring
and Calibration Procedure ........................................................... 18
6. Data Load, Data Record, Data Logger ........................................ 24
7. Advanced Adjustment Procedure................................................ 26
7.1 Check Memory Space ................................................................... 27
7.2 Clear Memory ............................................................................... 27
7.3 Date/Time Setting......................................................................... 27
7.4 Sample Time Setting..................................................................... 27
7.5 Auto Power Off Default Setting.................................................. 28
7.6 Temp. Unit Default Setting .......................................................... 28
7.7 pH Manual Temp. Value Setting.................................................. 28
7.8 CD Temp. Compensation Factor Setting...................................... 28
7.9 CD ( µS, mS ), TDS ( ppm ) Setting ............................................... 29
7.10 DO % Salt Compensation Value Setting ..................................... 29
7.11 DO Height (Altitude) Compensation Value Setting ................... 30
7.12 Escape from the Setting function................................................ 30
8. Data Output.................................................................................. 31
9. RS232 PC Serial Interface.............................................................. 33
10. Battery Replacement .................................................................... 35
11. System Reset ................................................................................. 35
12. Accessories .................................................................................... 36
1
1. Specifications
1.1 General Specifications
Circuit Custom microprocessor LSI
Display LCD size : 58 mm x 34 mm.
Measurement pH / Oxidation Reduction Potential (ORP)
Conductivity/Total Dissolved Solids (TDS)
Dissolved Oxygen (DO)
Temperature
Sampling Time of Data Log-
ger
1 second to 8 hours 59 minutes and
59 seconds
Data Hold Freeze the display reading.
Memory Recall Maximum and Minimum value
Power off •Auto shut off saves battery life; manual
shutoffpossiblebypressing“Power”button
for 2 seconds
•Default changeable: auto power off/
manual power off
•Withdefaultsetatautopoweroff,power
will off automatically after 10 minutes if no
buttonispressed.
Display lapse time Approx.1second.
Data Output RS 232 PC serial interface
Operating Temperature 0 to 50 °C (32 to 122°F) for the instrument
(notincludingprobes)
Operating Humidity Less than 80% rel. humidity
Power Supply •DC1.5Vwith4batteries(mignonsize;
TypeAA)
•DC9Vbyadapterinput
Power Current •Operation:approx.DC28mA
•Clock(poweroff):approx.DC1µA
2
Weight •instrument390g(batteriesincluded)
•withprotectivecovering620g
Dimension • instrument:203x76x38mm
• with protective covering: approx.
220 x 125 x 45 mm
1.2 Electrical Specifications (23± 5°C)
A. pH/mV
Measurement pH 0 to 14 pH
mV -1999mVto1999mV
Input Impedance 1012 ohm
Temperature Compensation
for pH measurement
Manual 0 to 100°C
(32 to 212°F)
Automatic(ATC) 0to65°C
(32 to 149 °F) with tem-
peratureprobe
pHCalibration 1to3pointcalibrationusing
pH7/pH4/pH10buffersolutions
Threepointcalibrationensuresbestlinearity
and accuracy
Measurement Range Resolution Accuracy
pH 0 to 14 pH 0.01 pH ± (0.02 pH + 2 digits)
mV -1999to1999mV 1mV ± (0.5 % pH + 2 digits)
*pHaccuracyisbasedoncalibratedmeteronly.
3
B. Conductivity
Conductivityprobe Carbon rod electrode for long
life
Function •Conduction(µS,mS)
•TotalDissolvedSolids(ppm)
•Temperature(°C,°F)
Temperature Compensation Automatic from 0 to 60°C
(32–140°F),
with temperature compensa-
tion factor variable between
0 to 5 % per °C
ProbeOperatingTemperature 0to60°C(32to140°F)
ProbeDimension R o u n d , 2 2 m m d i a m e t e r x
120 mm length
ProbeWeight approx.65g
Range Measurement Resolution Accuracy
200µS 0to200.0µS/cm 0.1µS/cm ± (2 % F.S.
+ 1 digit)
2 mS 0.2 to 2.000 mS / cm 0.001 mS / cm
20 mS 2 to 20.00 mS / cm 0.01 mS / cm
200 mS 20 to 200.0 mS / cm 0.1 mS / cm
F.S. = Full Scale
4
C. TDS (Total Dissolved Solids)
Range Measurement Resolution Accuracy
200 ppm 0 to 132 ppm 0.1 ppm ± (2 % F.S. +
1 digit)
2,000ppm 132to1,320ppm 1 ppm
20,000ppm 1,320to13,200ppm 10 ppm
200,000ppm 13,200to132,000ppm 100 ppm
F.S. = Full Scale
D. Temperature
Function Measurement Resolution Accuracy
°C 0°Cto60°C 0.1°C ± 0.8°C
°F 32°F to 140°F 0.1°F ± 1.5°F
E. Dissolved oxygen
OxygenProbe Polarographictypeoxygenprobe
ProbeCompensation
andAdjustment
Temperature 0to50°C,automatic,
(3 to 122 °F)
Salt 0 to 39 % Salt
Height 0 to 8900 meter
ProbeWeight approx. 195 g
ProbeSize Round,190mmlengthx28mmdiameter
Measurement Range Resolution Accuracy(23±5°C)
Dissolved Oxygen 0 to 20.0 mg/L 0.1 mg/L O2± 0.4 mg/L O2
OxygeninAir 0 to 100 % 0.1 % O2± 0.7 % O2
5
2. Front Panel Description (Fig. A)
A-1 Display
A-2 Power Button
A-3 REC Button (Enter Button)
A-4 HOLD Button (ESC Button)
A-5 Mode Button ( Up Button, Zero Button)
A-6 Function Button (Range Button, Down Button)
A-7 Send Button (Clock Button)
A-8 SET Button (Logger Button)
A-9 Stand
A-10 Battery Compartment Cover
A-11 Battery Cover Screw
A-12 Tripod Fix Nut
A-13 Temp. Socket (pH ATC Socket)
A-14 CD Socket
A-15 DO Socket
A-16 pH Socket (BNC Socket)
A-2
A-3
A-4
A-5
A-6
A-7
A-8
A-1
A-15
A-14
A-13
A-16
A-12
A-9
A-11
A-10
6
A-17 DC 9V Power Adapter Input Socket
A-18 RS-232 Output Terminal
A-19 System Reset Button
A-20 LCD Brightness Adjust
Attention:
Please do not put more than one electrode only into the wa-
ter sample when using an instrument that works with various
electrodes.
Only start the measurement for which the according electrode
is immersed in the sample.
A-17 A-18 A-19 A-20
DC IN
RS232
RESET
7
3. pH/mV Measuring and Calibration Procedure
Display layout
MeasurementValue
PH
Manual Temp.
25.0 °C
Temp. value Temp unit
pH
or
mV
Manual Temp. or
AutoTemp.
10.00
The meter default settings are as follows:
•The display unit is set to pH.
• The temperature unit is set to °C.
• Manual temperature setting (without ATC probe
connection)
• Auto power off.
• Data logger function sampling time: 2 seconds.
8
3.1 pH measurement (with manual temperature setting)
1)AttachthepHElectrodebyinstallingthe“ProbePlug“
(Fig.B-1)intothe“pHSocket/BNCSocket“(Page5,Fig.A-16).
2)Poweronthemeterbypressingthe“Power”buttononce.
3)Keeppressingthe“Mode”buttonuntilthedisplayofbottom
rightshows“pH“and“ManualTemp.“indicator.
4) Adjust the Manual Temp. value exactly to the same
temperature
as the solution. For procedure refer to chapter
7.7, page 28.
5)RemovecapandholdthepHElectrodebody(Fig.B-2)andcom-
pletelyimmersethe“SensingHead“(Fig.B-3)inthesolutionto
bemeasuredandgentlyswirltheprobe.
6)TheupperdisplaywillshowthepHvalue,thebottomleftdisplay
will show the Manual Temp. setting.
Fig. B
B-1
B-2
B-3
B-4
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