Post on 07-Oct-2020
transcript
Portable
Conductivity Meter
M1410 User Manual
1.002
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General information
This manual describes the operation of the Portable Conductivity Meter M1410. Please read
this entire manual before operating this equipment, to ensure proper and safe operation of
the product. And keep this manual carefully, so it is readily available whenever necessary.
Product and manual are subject to change without notice.
Safety information:
WARNING
Meter Do not take apart or modify the meter. Otherwise, it may heat up
or be ignited or an accident.
Battery Keep batteries away from children. If someone swallows a battery
accidentally, consult doctor immediately.
If alkaline fluid from a battery gets into the eyes, do not rub the
eyes, rinse with clean water immediately, then consult doctor.
Do not put batteries in a fire, expose to heat, disassemble or
remodel, it could cause fluid leaking, overheating or explosion.
Product information
Only use the product including accessories for their intended purpose.
This meter is shockproof, but severe impact could damage it.
The surface is made of TPE, keep the meter away of strong acid or alkali solution.
Do not heat to dry it with heating unit, such as electric hair drier.
This meter is a dust-proof and waterproof design. But does not guarantee
non-destructive, trouble-free, dust-proof, and waterproof performance in high dust or
high salt mist environment.
Do not replace the batteries in a dusty place or with wet hands
The Ni-MH rechargeable battery can be used in this meter, but the battery life ICON will
be not correct.
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Contents: General information............................................................................................................................................1
Safety information: ..............................................................................................................................................1
Product information ...........................................................................................................................................1
FEATURES ...............................................................................................................................................................3
Meter and operation ..........................................................................................................................................3
Meter overview ...........................................................................................................................................4
Display ..................................................................................................................................................5
Keypad description ...........................................................................................................................6
Operation ......................................................................................................................................................6
Startup ..................................................................................................................................................6
Select the MODE ...............................................................................................................................6
Using the backlight ...........................................................................................................................8
Entering numeric values .................................................................................................................8
Auto Power-off ..................................................................................................................................9
Measurement ........................................................................................................................................................9
Preparation ...................................................................................................................................................9
Battery Installation ............................................................................................................................9
Connect a probe ............................................................................................................................ 10
Measurement ............................................................................................................................................ 10
Calibration ........................................................................................................................................ 12
Set the Factors ................................................................................................................................ 13
Specifications ..................................................................................................................................................... 14
Conductivity probe: ................................................................................................................................ 14
Appendix ............................................................................................................................................................. 15
Calculating Temperature Coefficients .............................................................................................. 15
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FEATURES
IP67 Waterproof
Float
Shockproof
2*AAA Battery
Conductivity; TDS; Salinity Measurement
Auto Ranging
2 data points for Calibration
Automatic Temperature Compensation
Restore Factory Default
Hold Function
Auto Power-Off
Meter and operation
This section describes the name of each part and the main function, and basic operation.
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Meter overview
No. Name Description
1 LCD with backlight Display the readings and parameters
2 Keys Power/Back Light; Mode; Hold/Set.
3 Probe connection port 4-pin IP-68 waterproof connector
4 Battery Cover On the bottom of the instrument.
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Display
No. Name Description
1 Scale Name Displays the scale name
2 Battery Status Displays the battery level
3 Scale
Unit
Current measurement scale unit
4 2nD
Figure Area
Displays the Temperature or others parameters
5 Hold Icon The reading will be frozen when this icon was shown.
6 Wireless
Connection
The meter has been connected to a host device while this
icon is shown. (This function is not for the M1410)
7 Functions User can change the function by the mode key,
8 SLOPE Only for the pH electrode, not for the M1410
9 ATC This icon will be displayed if the conductivity electrode has
been connected to the meter,
The temperature sensor could be detected by the meter.
10 Ready Icon Displayed when measuring results are stable
11 1st
Figure Area
Displays the scale readings and settings.
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Keypad description
No. Name Function
1 POWER
/BACKLIGHT
Turn on the meter by pushing once
Turn off the meter by holding for 3 seconds
Turn on/off the backlight by pushing once when the meter
is power on.
2 Mode
Change the scale, Temperature unit, and set the parameters
3 Hold/Set
Hold the readings
Set is used as the confirmation key in the status of the
Mode
Operation
Startup
Push the key to turn on ,push the key for 3 seconds to turn off the
meter. If the meter does not turn on, make sure that the batteries are properly installed.
Select the MODE
One item of Mode will flash in proper order by pushing the key once, when meter
is on. Push the HOLD/SET key to confirm or enter when the icon flash.
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No. MODE Description
1 MODE1:
Measurement
mode
Select an option from a scale list: CON, TDS, SALT.
Use the MODE key to select an option. Push the HOLD/SET
key to confirm when the scale icon flash, and return to
Measurement Mode.
2 MODE2 Select the temperature unit.
3 MODE3:
Function
mode
Select the Function from CALIBRATION, SET FACTOR and
RESET; use the MODE key to select a function. Push the
HOLD/SET key to enter
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Note of MODE3: Function mode
CALIBRATION: The meter could automatically recognize the solution, and calibrate
the reading to 12.88 mS or 1413 μS.
SET TDS FACTOR: To set the factor for the TDS calculation from the conductivity
reading. Default setting is 0.50.
SET ATC FACTOR: To set the temperature compensation factor. Default setting is
2.1%.
RESET: The meter will be reset to the factory setting.
Push the key and select the RESET function.
The previous Calibration information of the user will be deleted.
The TDS FACTOR will be 0.50.
The ATC FACTOR will be 2.1%
The Temperature UNIT will be “℉”.
NOTE:
CALIBRATION, SET TDS FACTOR and SET ATC FACTOR: More details in the Measurement.
Using the backlight
When it is difficult to see the LCD in the dark, you can turn on the backlight by pressing the
key.
Note:
Turning on the backlight consumes energy and shortens battery life.
Entering numeric values
If the user want to set the parameter value and the meter is already in the setting modes,
push the key once to increase the value, hold down the key to
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continually decrease the value.
Auto Power-off
The meter will automatically power off without any operation for 8 min.
Measurement
This section describes the method of measurement.
Preparation
To make sure that the electrode is not stained or damaged.
According to your applications, the standard solution will be helpful to the accurate reading.
Do not use the instrument near any noise source.
Battery Installation
This instrument is operated by batteries. You can use AAA alkaline batteries or AAA NiMH
rechargeable batteries. Perform the following procedure to insert batteries in the meter.
1. Turn the screws on the battery cover counterclockwise and remove the cover.
2. Install 2 AAA alkaline or 2 AAA nickel metal hydride batteries.
3. Make sure that the batteries are installed in the correct polarity.
4. Put the battery cover back.
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Connect a probe
1. Plug the probe into the meter.
2. Push and turn the Plug tight nut to tighten.
Measurement
1. Push the key and select the scale.
2. Push the key to confirm the selection when scale icon flash.
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3. Put the probe into the solution and shake the probe gently to remove bubbles from the
surface of the electrode.
4. There should be above 3cm from the probe bottom to the beaker bottom.
5. icon will display when the readings are stable。
6. Record the readings.
7. Put the electrode out of the solution, and rinse it with deionized water.
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Calibration
1. Same as the measurement, put the electrode into the standard solution (12.88mS,
1413uS) until the readings are stable.
2. Push the key to select the calibration function and Push key to
confirm.
3. When the procedure is completed, End will be displayed.
4. The meter will return to measurement mode automatically.
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Set the Factors
Two factors could be modified by user: TDS Factor, and ATC Factor.
1. Push the key to select the SET TDS FACTOR or SET ATC FACTOR function and
Push key to confirm it.
2. Push the key to change the setting. Push the key once to increase
the value, hold down the key to continually decrease the value.
3. Press the key to confirm and return the measurement mode.
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Specifications
Specification Description
Model M1410
Scale Conductivity; TDS; Salinity;
Operating temperature 0 – 40 ℃
Operating humidity 0 – 80%(non-condensing)
Power supply 2 X AAA Alkaline batteries
Dimensions 60*70*36mm
Weight Approximate to 226 g
Temperature Sensor NTC Thermistor
Range 0-80 ℃
Resolution 0.1 ℃
Accuracy ± 0.5 ℃
Conductivity Sensor 2-Cell
Range 0 – 200 mS
Resolution 0.1% full scale
Accuracy ±1.0%(0.00 – 100.0 mS);
±1.5%(100.0 – 200.0 mS)
TDS Sensor Calculate from the Conductivity
Range According to Conductivity
Resolution 0.1% full scale
Accuracy According to Conductivity
Salinity Sensor Calculate from the Conductivity
Range 0.0 - 40.0 ppt(Display Range: 0.0 – 100.0 ppt)
Resolution 0.1 ppt
Accuracy ±0.4% full scale
Conductivity probe:
Include a graphite conductivity probe (k=1).
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It has been software optimized. In the range: 10.0uS – 100.0mS, the 1% accuracy can be
achieved. In the other range, the accuracy is around ±1.5%. At both Endpoints, the
accuracy is ±2%.
Appendix
* If you do not know the temperature coefficient of your solution you can determine the
correct value using the formula in Appendix “Calculating Temperature Coefficients”.
Calculating Temperature Coefficients
To determine the temperature coefficient of your sample solution use this formula:
𝐓𝐂 = 100 x𝐂𝐓𝟐−𝐂𝐓𝟏
𝐂𝐓𝟏(𝐓𝟐 − 𝟐𝟓) − 𝐂𝐓𝟐(𝐓𝟏 − 𝟐𝟓)
TC = Temperature coefficient
CT1 =Conductivity at Temp. 1
CT2 = Conductivity at Temp. 2
T1 = Temp. 1
T2 = Temp. 2
25 = 25°C
A controlled temperature water bath is ideal for this procedure.
1. Immerse the probe into a sample of your solution and adjust the temperature coefficient
to 0% (that is, no compensation) by performing the following:
2. Wait for 5 minutes. Note T1 and CT1 (conductivity at T1).
3. Condition the sample solution and probe to a temperature (T2) that is about 5°C to 10°C
different from T1, and note the conductivity reading CT2.
NOTE: Record your results for future reference. Ideally T1 and T2 should bracket your
measurement temperature, and should not differ by more than 5°C.
4. Calculate the temperature coefficient of your solution according to the formula shown
above.
5. Enter the temperature coefficient you calculated into the meter.
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The calculated temperature coefficient will now be applied to all the meter readings.
To determine the conductivity to TDS conversion factor for your solution:
Appendix
1. Factor—the conductivity to ppm TDS conversion factor. Multiply conductivity by this factor
to get ppm TDS for the type of TDS reading needed.
2. 442—a formulation that most closely represents the conductivity to ppm relationship, on
average, for naturally occurring fresh water.
3. TDS Your Material—These columns are for you to write in your application-specific
conductivity-to-ppm values and conversion factors for future reference.
Factor = actual TDS ÷ Actual Conductivity @ 25°C lists some commonly used
conversion factors.
Conductivity
at 25°C
TDS KCl TDS NaCl TDS 442 TDS Your
Material
ppm
Value
Factor ppm
Value
Factor ppm
Value
Factor ppm
Value
Factor
1413 μS 744.7 0.5270 702.1 0.4969 1000 0.7078
12880 μS 7447 0.5782 7230 0.5613 11,367 0.8825