Features

• Salinity refractometers are useful for measuring the concentration of natural or artificial seawater in aquariums, holding tanks, and breeding ponds
• They can also be used for controlling the saltwater concentration when preparing pickles, measuring the concentration of saltwater used in rinsing and cooking sea products

REED R9600 Specifications

Calibration

1. Open the cover plate & place 2-3 drops of distilled water onto the prism surface, close the cover plate, press lightly & ensure the water spreads evenly across the whole surface area without air bubbles or dry sections. (wait 30seconds until the water adjusts to ambient temperature)

2. Hold towards light source & look into the eyepiece, if the boundary line between the upper blue field & the lower white field is not located exactly on the 0°C waterline, adjust the correcting screw until both lines meet.

3. Wipe the water from the prism with clean dry cloth & replace the rubber correcting screw cover.

NOTE: under normal operating conditions the calibration only needs to be checked periodically

Maintenance

1. If the ambient temperature is not within the automatic temperature compensation range (10 – 30°C) the instrument must be calibrated before testing commences.

2. The prism must be cleaned thoroughly with a soft, clean damp cloth after each use – failure to do so will result in inaccurate readings & possible long term damage

3. The instrument must be kept in a dry clean environment to prevent condensation forming on the optical components

4. If used in accordance with the instructions & all warning are followed – the optical performance will remain constant & the instrument will give many years of reliable service.

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• The REED R9500 Brix Refractometer shows the concentration percentage of the soluble solids content (total solids) of a sample (water solution)
• The soluble solids content is the total of all the solids dissolved in the water – beginning with sugar, salts, protein, acids, etc. and the measurement reading value is the value of the sum total of these
• Brix% is calibrated to the number of grams of cane sugar contained in 100g of cane sugar solution (When measuring a sugar solution, the Brix% should perfectly match the actual concentration)

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Function selection
This Reed Salt/TDS/Conductivity Datalogger meter has 3 measuring functions to choose from: Conductivity, TDS, and Salt. With the instrument powered on, press and hold the Function Button. The display will flash “Cd”, for Conductivity measurements, “tdS” for TDS measurements, and “SALt” for Salt measurements. Release the Function Button to choose the displayed function.
The meter is defaulted to Auto Range mode. Push the Range Button to change the range from 200μS, 2mS, 20mS, 200mS and Auto Range.

Zero Adjustment
If the probe is not immersed in the measuring solution and the display will not show a Zero Value. Press and hold the Up Button for about 10 seconds and the display will then show zero. The Zero function is only valid for the 200μS range and not when the Zero Value is < 2.0μS.

Conductivity Measurements
Always plug the Probe Plug into the Probe Socket with your meter switched off. Now power on the meter by pressing the Power Button. Select the “Cd” function and hold the Probe Handle and fully immerse the Probe Sensor into the measuring solution. Shake the Probe to let the Probe’s internal air bubble drift out from under the sensing head. The top part of the Display will show the conductivity mS (μS) values, and the lower part of the Display will show the temperature value of the solution.

TDS Measurement
With your salinity meter switched meter is off, plug the Probe Plug into the Probe Socket, then power on the meter by pressing the Power Button. Using the Function Select, navigate until the “tdS” function icon is displayed on the screen. Hold the Probe Handle and fully immerse the Probe Sensor into the measuring solution. The Display will show the Total Dissolved Solids value.

Salt Measurements
Before starts any salt measurements, your meter need to have the probe plug plugged into the Probe socket and the “SALt” function selected. The procedure is similar as TDS measurements. The display will show the Salt value (% of weight).

Data Record (Max., Min. reading)
The data record function records the maximum and minimum readings. Press the REC Button once, and a ”REC. MAX.” symbol along with the maximum value will appear on the display. Press the REC Button again, and a “REC. MIN.” symbol along with the minimum value will appear on the display.

Auto Datalogger
Press the REC Button, and the “REC” symbol will appear on the LCD screen, then press the Logger Button, the “REC” symbol will flash while the measuring data and time information is being saved in memory. To set the sampling time, and to toggle the beeper sound on or off, refer to the Advanced Settings section of this manual. Pause the Datalogging; while Datalogging, if press the Logger Button once. While paused, the “REC” symbol will stop flashing. Press the Logger Button again to resume Datalogging, and the “REC” symbol will begin to flash again.Stop Datalogging; while the Datalogger function is paused, press the REC Button for 2 seconds. The “REC” symbol will disappear indicating the Datalogging function has stopped.

Manual Datalogger
Set sampling time is to 0 second; Press the REC Button, and the “REC” symbol will appear on the LCD screen. Press the Logger Button, and the “REC” symbol will flash once and one Beep will sound, at the same time the measuring data along the time information will be saved in memory. The lower Display will show the Position (record) number, which is saved as well. To Change the Position Number; press the Down Button and the lower position number will flash on the display. Press the Up or Down Buttons to set the Position Number (1 to 99) to help identify the measurement location. The lower Display will show P x (x = 1 to 99). After the position number is selected, press the Enter Button to confirm. Stop Datalogging; press the REC Button for 2 seconds, and the “REC” symbol will disappear indicating the Datalogging function has stopped.

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pH Measurements (Manual Temp. Compensation)
Turn on this data logger by pressing the Power Button and connect the Optional pH Electrode into the pH/BNC SD-230’s socket. Before taking measurements you need to Set the pH Manual Temperature Compensation value. Press and hold the SET Button for 2 seconds to enter the “Advanced Setting” mode. Press the Next Button scroll through eight main functions, shown on the lower display until the “t-Set” icon appear. When the lower display shows “t-SEt “, use the Up or Down Buttons to select the upper value to the desired Temperature Compensation value. The default value is 25°C (77°F). Press the Enter Button to save the setting as the default. Now you can exit “Advanced Settings” by pressing the Esc Button.
Hold the Electrode Handle and let the Sensing head get fully immersed the measured solution. Shake the pH Electrode to let the probe’s internal air bubble drift out from the sensing head. The top display will show the pH value and the bottom display will show the setting for the Manual Temperature Compensation value.

pH Measurements (ATC)
For pH measurements you need to plug in the optional Temperature Probe into the Temperature Socket. Plug in the optional pH Electrode into the pH/BNC Socket. Immerse both the Temperature Probe and the pH Electrode into the measured solution. Shake the pH Electrode to let the probe’s internal air bubble drift out from the sensing head. The top display will show the pH value and the bottom display will show the measured Temperature.

mV Measurements
This instrument comes with an built in mV (millivolt) measurement function. This feature enables you to make ion-selective, ORP (oxidation-reduction potential), and other precise mV measurements. All of these measurements are easy to made and start when you will push down the “function button” so the unit switches from “pH” to “mV”. To return to pH measurements, press the Function Button again. Connect the optional ORP Electrode Plug into the pH/BNC Socket. 3) The Display will show the mV value.

How to use Data hold and Data record functions
You can hold on the measured values any time while taking a measurement by pressing the Hold Button once. Press the Hold Button once again will release the data hold function. To record the maximum and minimum pH or ORP readings, press the REC Button once, and a ”REC. MAX.” symbol along with the maximum value will appear on the display. Press the REC Button again, and a “REC. MIN.” symbol along with the minimum value will appear on the display.

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