Orbeco HELLIGE SC400 Instruction Manual

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SC400 Colorimeter

Fluoride

Instruction Manual

Switch the unit on using the ON/OFF key.

The display shows the following:

Fill a clean vial with the water sample up to the 10 mL mark, screw the cap on and place in the sample chamber with the ∆-mark on the vial aligned with the ∇−mark on the instrument.

Press the ZERO/TEST key.

The method symbol ﬂashes for approx. 8 seconds.

The display shows the following:

After zero calibration is completed, remove the vial from the sample chamber.

Add the reagent solution; a color will develop in the sample.

Screw the cap back on and place the vial in the sample chamber with the ∆ and ∇ marks aligned.

Press the ZERO/TEST key.

The method symbol ﬂashes for approx. 3 seconds.

The result appears in the display.

The result is saved automatically.

Repeating the analysis:

Press the ZERO/TEST key again.

New zero calibration:

Press the MODE key until the desired method symbol appears in the display again.

Operation

METHOD

0.0.0

RESULT

Off

Zero

Test

Zero

Test

Display backlight

Press the "!" key to turn the display backlight on or off. The backlight is switched off automatically during the measurement.

Mode

Zero

Test

Correct ﬁlling of the vial

Light source: LED, Filter (l = 580 nm) Battery:

9 V-

block battery (Life 600 tests),

without display light. Auto-OFF: Automatic switch off 5 minutes after last

keypress Ambient conditions

5-40°C

30 - 90 %

rel. humidity (non-condensing).

CE:

DIN EN 55 022, 61 000-4-2, 61 000-4-8,

50 082-2, 50 081-1, DIN V ENV 50 140, 50 204

Technical Data

Method notes

Prior to measurement ensure that the sample is suitable for analysis (no major interferences) and does not require any preparation i.e. pH adjustment, ﬁltration etc.

Reagents are designed for use in chemical analysis only and should be kept well out of the reach of children. Ensure proper disposal of reagent solutions.

Material Safety Data Sheets: available on request.

Fluoride 0.05 - 2.0 mg/L F

–

0.0.0

Perform zero calibration (see "Operation")

Add accuratly 2 mL of SPADNS-reagent to the 10 mL water sample. (Attention: vial is ﬁlled to the top). Replace the cap tightly. Invert the vial gently several times to mix the contents. Place the vial back in the sample chamber making sure the ∆ and ∇ marks are aligned. Place the cover on the sample chamber.

Press the ZERO/TEST key.

The method symbol ﬂashes for approx. 3 seconds.

The result is shown in the display in mg/L F –.

Measuring tolerance: ± 0.1 mg/L (see notes)

Notes

1. The same batch of SPADNS reagent solution must be used for adjustment and test. The adjustment process needs to be performed for each new batch of SPANDS reagent solution (see Standard Methods 20th, 1998, APHA, AWWA, WEF 4500 F D., S. 4-82). Procedure see "Calibration".

2. During adjustment and test the same vial should be used for zeroing and test, as different vials may exhibit minor tolerances.

3. The calibration solution and the water samples to be tested should have the same temperature (± 1°C).

4. As the test result is highly dependent on accurate sample and reagent volumes, the sample and reagent volumes should always be measured by using a 10 mL resp. 2 mL volumetric pipette (class A).

5. The accuracy of the test methods decreases above a level of 1.2 mg/L Fluoride. Although the results are sufﬁciently accurate for most applications, even more exact results can be achieved by 1:1 dilution of the sample prior to use and subsequent multiplication of the result by 2.

6. SPADNS reagent solution contains Arsenite. Chlorine concentrations up to 5 mg/L do not interfere.

RESULT

Zero

Test

Press the MODE key and hold.

Switch the unit on using the ON/OFF key. Allow the 3 decimal points to be displayed before releasing the MODE key.

The “!” key allows for selection of the following menu points:

▲

recall stored data

▲

▼

setting the date and time

▼

user calibration

The selected menu is indicated by an arrow in the display.

Conﬁrm the selection with the MODE key.

Recall of stored data

The meter shows the most recent measurements taken in the following format (automatically proceeds every 3s until result is displayed):

Number n xx (xx: 16...1) Year YYYY (i.e. 2007) Date mm.dd (monthmonth:dayday) Time hh:mm (hourhour:minuteminute) Test Method Result x,xx

The ZERO/TEST key repeats the current data set.

The MODE key scrolls through all stored data sets.

Quit the menu by pressing “!” key.

Setting date and time (24-hour-format)

After conﬁrming the selection with the MODE key the value to be edited will be shown for 2 sec.

The setting starts with the year (YYYY) followed by the actual value to be edited. Same applies for month (mm), day (dd), hour (hh) and minutes (mm). Set the minutes ﬁrst in steps of 10, press the "!" key to continue setting of minutes in steps of 1.

Increase the value by pressing the MODE key.

Decrease the value by pressing ZERO/TEST key.

Proceed to the next value to be edited by pressing “!” key.

After setting the minutes and pressing the “!” key the display will show “IS SET” and instrument returns into the measurement mode.

When the battery is taken of for more than 1 minute, the unit will automatically enter the date/time menu when switched on again.

Off

Mode

Zero

Test

Mode

Time Cal

Store Date

▼

Mode

SET

DATE

YYYY

(2 sec.)

Zero

Test

Mode

Menu selections

Calibration Mode

Note:

A new calibration is necessary in case of a new unit as well as by use of a new BATCH of SPADNS reagent solution.

Press MODE key and hold.

Switch unit on using ON/OFF key. Release MODE key after approx. 1 second. The “!” key allows for selection of the menu points:

Measure the sample and reagent volume with a 10 mL and 2 mL pipet only. Calibration solutions and samples should have the same temperature (±1°C).

Press MODE key and keep it depressed.

Switch unit on using ON/OFF key. Release MODE key after approx. 1 second.

The display will show alternately:

Fill a clean vial with 10-mL deionised water and replace the cap tightly. Place the vial back in the sample chamber making sure the ∆ and ∇ marks are aligned. Place the cover on the sample chamber.

Press the ZERO/TEST key.

The method symbol ﬂashes for approx. 8 seconds.

The display shows the following.

Remove the vial from the sample chamber. Pipet 2 mL of SPADNS-reagent. The SPADNS-reagent must be measured accurately. Replace the cap tightly. Invert the vial gently several times to mix the contents. Place the vial back in the sample chamber making sure the ∆ and ∇ marks are aligned. Place the cover on the sample chamber.

Press the ZERO/TEST key.

The method symbol ﬂashes for approx. 3 seconds.

The display shows the following:

Empty the vial, rinse vial and cap several times and dry

Measure 10 mL standard solution of 1 mg/L Fuoride accurately into the dry vial. Pipet 2 mL of SPADNS-reagent.The SPADNS-reagent must be measured accurately. Replace the cap tightly. Invert the vial gently several times to mix the contents. Place the vial back in the sample chamber making sure the ∆ and ∇ marks are aligned. Place the cover on the sample chamber.

Press the ZERO/TEST key.

The method symbol ﬂashes for approx. 3 seconds.

The display shows the following: (conﬁrmation of calibration (adjustment))

Switch the unit off using the ON/OFF key. The new calibration is stored.

Mode

Zero

Test

Zero

Test

Off

0.0.0

Off