SPER SCIENTIFIC 850045 Waterproof Dissolved Oxygen Meter Pen User Manual

SPER SCIENTIFIC 850045 Waterproof Dissolved Oxygen Meter Pen

Dissolved Oxygen Pen – 850045
Copyright ©2015 by Sper Scientific
ALL RIGHTS RESERVED
Printed in the USA.

The contents of this manual may not be reproduced or transmitted in any form or by any means electronic, mechanical, or other means that do not yet exist or may be developed, including photocopying, recording, or any information storage and retrieval system without the express permission from Sper Scientific.

Please note:
The most current version of the manual can always be found at www.sperdirect.com

FEATURES

• Heavy-duty polarographic D. O. probe including temperature sensor
• Automatic Temperature Compensation
• Microprocessor assures high accuracy
• Dual display LCD
• Auto power off
• IP65 water resistance.
• Maximum and Minimum
• Data hold

FRONT PANEL DESCRIPTION

1. Battery Compartment & Cover
2. Display
3. Power Button
4. HOLD/Unit Button
5. REC/°C/°F Button
6. Probe Head & Protection Cover

CALIBRATION

1. Fill the D.O. meter probe head (completely) with an Electrolyte prior to using it the first time. Please refer to the Probe Maintenance section for instructions.

2. Prior to taking measurements, the D.O. meter should be calibrated using the following steps.

3. Remove the red protective cover from the black probe head.

   • The small sponge inside the red cover keeps the diaphragm moist with water.

4. To turn the meter on, press the POWER ON/OFF button.

5. The LCD display will show %O2 and Temperature – see the example below.
   Wait for approximately three (3) minutes until the upper display value stabilizes.

6. Press and release the HOLD button – the display will read HOLD.

7. Press and release the REC button – the display will show a flashing CAL indicator and the upper value will change to 30, then the countdown to 0 (takes 30 seconds).

8. Once the countdown has been completed, the End indicator will be displayed momentarily, then the display will return to the normal display as shown in step 5.

Perform the calibration procedure in an open and well-ventilated area to achieve the best possible results. Once the calibration is complete the meter should read approx. 20.9 as this is the typical amount of O2 in the air.

MEASUREMENT PROCEDURES

Dissolved Oxygen (DO) Measurement

1. Make certain the meter has been calibrated (page 4).

2. Press and hold the UNIT button for at least 2 seconds, the display will change from %O2 to mg/L.

3. The meter is now ready to measure.

4. To activate Automatic Temperature Compensation the probe head must be immersed to a depth of 3 cm. It takes several minutes for the temperature of the probe and liquid to equalize.

5. For accurate D.O. measurement of any liquid, the probe should be moving. Make sure that the velocity of the movement is at least 0.2 – 0.3 m/s. This can be achieved by shaking the probe.
   Note
   To keep errors to a minimum during laboratory measurements, the use of a magnetic agitator is recommended.

6. Rinse the probe with tap water after each measurement.

7. Re-install the probe head’s protector cover.

Temperature Measurement

1. When not in calibration mode, the meter continually displays the temperature at the bottom left-hand corner of the LCD in either ºC or ºF.
2. Press and hold the REC button for at least 2 seconds to switch the temperature unit from ºC to ºF.

Note
The temperature unit cannot be changed when the meter is in record mode (when the REC indicator is displayed on the LCD).

Data Hold

1. While measuring, press the HOLD button to hold the displayed value. The LCD will show the HOLD symbol.
2. Press the HOLD button once again to release the data hold function.

Data Record (Maximum & Minimum Reading)

1. The data record function records the maximum and minimum readings. Press the REC button to start the Data Record function – the display shows REC.
2. Press the REC button: the REC MAX symbol, along with the maximum value shows on the display.
3. Press the REC button again and the REC MIN symbol, along with the minimum value shows on the display.
4. To exit the record function, press and hold the REC button for a minimum of 2 seconds. The display will return to the current reading.

PROBE MAINTENANCE

Initial Use

1. Unpack the DO meter and fill the probe head with the Electrolyte (OXEL-03) fluid provided.
2. Follow the steps shown in Figure 2.

Probe Head & Fluid Maintenance

1. Whenever the DO meter will not calibrate correctly or the DO reading is unstable, check to see if the Electrolyte fluid is dirty or has evaporated.
2. If the Electrolyte fluid needs to be replaced, refill the probe head (completely), following the steps shown in Figure 2 and recalibrate the DO meter (see page 4).
3. If the fluid has been replaced and the DO meter still does not calibrate correctly or give a stable reading, check the probe head diaphragm for damage.
4. The Teflon diaphragm is delicate and can be damaged if it comes in contact with solid objects or if the meter is dropped.
5. If the diaphragm is damaged replace it with one of the spare probe heads provided with the meter.
6. Refill the new probe head with Electrolyte fluid by following the steps shown below.

1. Unscrew the probe head.
2. Pour out the current Electrolyte fluid from the probe head (unless this is the initial use).
3. Fill the probe head (to full capacity) with fresh Electrolyte fluid.
4. Screw the probe head back onto the probe body.

BATTERY REPLACEMENT

1. Replace the batteries when the low battery icon is displayed in the upper left corner of the LCD. Use 4 new AAA batteries.
2. To replace the batteries, open (turn counter-clockwise) the Battery Cover.
3. Ensure the Battery Cover is secured after replacing the batteries.

SPECIFICATIONS

Temperature: 0 to 50 ºC (32 to 122 ºF)

Resolution

| Dissolved Oxygen: 0.1 mg/L
Oxygen in Air: 0.1% O2
Temperature: 0.1 ºC

Accuracy

| Dissolved Oxygen: ±0.4 mg/L
Oxygen in Air: ±0.7% O2
Temperature: ±0.8 ºC/1.5 ºF
Power Off| Auto shut off
Data Hold| Holds the currently displayed reading
Operating Temp.| 0 to 50 ºC (32 to 122 ºF)
Sample Time| Approx. one (1) second
Operating RH| Less than 80% RH
Power Supply| 4-AAA Alkaline Batteries
Water Resistance| IP-65: 0 to 50 ºC – 32 to 122 ºF

IP65: 0 to 30 ºC – 32 to 86 ºF

Dimensions| 7¾” × 1½” × 1½” (197 × 38 × 38 mm)
Weight| 4.1 oz (116 g)

WARRANTY

Sper Scientific warrants this product against defects in materials and workmanship for a period of one (1) year from the date of purchase and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted if available. This warranty does not cover probes, batteries, battery leakage, or damage resulting from accident, tampering, misuse, or abuse of the product. Opening the meter to expose its electronics will void the warranty.

To obtain warranty service, ship the unit postage prepaid to:

SPER SCIENTIFIC LTD.
8281 East Evans Road, Suite #103
Scottsdale, AZ 85260

The defective unit must be accompanied by a description of the problem and your return address. Register your product online at www.sperwarranty.com within 10 days of purchase.

References

• Sper Scientific Instruments | Environmental Measurement Instruments – Sper Scientific Direct
• Sper Scientific Warranty

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