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Summary of Contents for Apera Instruments DO850
- Page 1 DO850 Portable Optical Dissolved Oxygen Meter Instruction Manual APERA INSTRUMENTS, LLC www.aperainst.com v2.1 - 1 -...
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Page 2: Table Of Contents
Table of Contents 1. Overview -------------------------------------------------------------------------------------------------- 2. Technical Specifications ------------------------------------------------------------------------------- 3. Instructions ----------------------------------------------------------------------------------------------- 3.1 LCD Screen ----------------------------------------------------------------------------------------- 3.2 Key Operation -------------------------------------------------------------------------------------- 3.3 Batteries --------------------------------------------------------------------------------------------- 3.4 Instrument Socket --------------------------------------------------------------------------------- 3.5 Reading Stability Mode ---------------------------------------------------------------------------- 3.6 Auto Lock Mode ------------------------------------------------------------------------------------- 3.7 Backlighting ------------------------------------------------------------------------------------------ 3.8 Automatic Power-Off ------------------------------------------------------------------------------ 4. -
Page 3: Overview
Meter. The DO850 measures dissolved oxygen in water using luminescence technology through an optical sensor and displays data using advanced intelligent instrument. Compared to electrochemical oxygen analyzers, the DO850 is more accurate and stable, easier to use and cost-effective portable dissolved oxygen meter. -
Page 4: Technical Specifications
2 Technical Specifications Dynamic Range (0-20.00) mg/L (ppm), (0-200.0)% Resolution 0.01/0.1mg/L (ppm), 0.1/1% ±2% reading or ±2% saturation, whichever is greater Accuracy ±2% reading or ±0.2 mg/L, whichever is greater Dissolved Oxygen Response Time ≤30 s (25℃ , 90% response) Calibration Points Saturation Point &... -
Page 5: Key Operation
① ⑦ Measurement mode icon Auto lock icon ② Reading/Measured Value Temperature Compensation ATC — Auto Temperature Compensation ③ ⑧ Symbol MTC — Manual Temperature Compensation ④ Units of Measurement ⑤ Temperature unit ⑨ Reading Stability Icon ⑥ ⑩ Temprature value / Symbol Low Voltage Icon 3.2 Key Operation Fig.-2... -
Page 6: Batteries
l In measurement mode: press to enter menu mode; Short l In calibration mode: press key to calibrate; Press l In the menu mode: press key to confirm the parameter. 3.3 Batteries The instrument uses three AA batteries, please use the LR6-type alkaline batteries to ensure battery quality. -
Page 7: Optical Dissolved Oxygen Probe
4 Optical Dissolved Oxygen Probe 4.1 Probe Structure The instruments DO803 optical dissolved oxygen probe has a cable length of 3m and built- in temperature sensor for automatic temperature compensation. The electrode structure is shown in Fig.-6 Fig.-6 1. Bottom cover of the calibration sleeve 5. -
Page 8: Sensor Cap
immersed in tap water at room temperature 25℃ for 24 hours. If the water temperature is low, soaking time is 48-72 hours. (D) The sponge can not be allowed to get stained or moldy, otherwise it will consume or produce oxygen. If stained or moldy, please clean immediately. 4.3 Sensor Cap (A) The sensor cap is an important part of the optical DO probe. -
Page 9: Resolution Selection
Resolution Selection The resolution unit can be selected in parameter setting P3.2: 0.01 or 0.1mg/L (ppm). After setting, the meter will display resolution of 0.1 or 1 in according to %. Temperature Unit Selection The temperature unit can be selected in parameter setting P4.1: ℃ or ℉. Air Pressure Compensation The instrument has automatic air pressure compensation function. -
Page 10: Special Notes For Calibration
(A) Preparation of 100ml of oxygen-free water: in the 100ml beaker weigh 2g anhydrous sodium sulfite (Na ) and add 100ml of pure water or tap water to dissolve. Oxygen-free water is effective within 1 hour. (B) Put the electrode into the oxygen-free water, wait for 3 to 5 minutes after the instrument is turned on, and wait for the temperature and measured value to completely stabilize. -
Page 11: Parameter Settings
8 Parameter Settings 8.1 Press the key in the measurement mode to enter the parameter setting mode P3.0, press the key to switch the menu P3.0 →P4.0; In P3.0 mode, press to enter P3.1, press to switch submenu P3.1→P3.5; In P4.0 mode, press to enter P4.1, press to switch submenu P4.1→P4.4. - Page 12 P3.3—Salinity Compensation (0~45 ppt) 1. Press the key, 0 flashes, Press key to adjust salinity value (0 to 45 ppt), Press Key to confirm. 2. Press to enter P3.4 mode,or press to return to measurement mode. P3.4—Air Pressure Calibration (60 to 120 kPa) 1.
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Page 13: Complete Kit
Calibration sleeve Warranty 10.1 The warranty period of the DO850 instrument (only the instrument) is 3 years from the date of purchase. That of DO803 optical DO probe (excluding sensor cap) is 2 years from the date of purchase. That of DO8032 sensor cap is 1 year from the date of purchase. If the above products or parts within the warranty period is not functional due to raw material defects or poor manufacturing, they are free for repair or replace. -
Page 14: Trouble Shooting
(C) Fails to maintain the product in accordance with the requirements of this manual and the industry standard process; (D) Any unauthorized repairs, and the use of defective or incorrect components to repair the product; (E) Any modification of the product unauthorized by the Company. 10.3 Product Warranty Period is the free of charge service time for the user who purchase the product, not the service life of the instrument or the probe. -
Page 15: Appendix A: Oxygen Solubility Table (760Mm Hg)
Appendix A: Oxygen Solubility Table (760mm Hg) Chlority: 0 5.0 ppt 10.0 ppt 15.0 ppt 20.0 ppt 25.0 ppt Temp °C Salinity: 0 9.0 ppt 18.1 ppt 27.1 ppt 36.1 ppt 45.2 ppt 14.62 13.73 12.89 12.10 11.36 10.66 14.22 13.36 12.55 11.78... -
Page 16: Appendix B: Do% Calibration Values
901.79 22.14 562.4 74.98 749.81 26.33 668.8 89.17 891.66 21.84 554.8 73.97 739.67 26.03 661.2 88.15 881.53 21.54 547.2 72.95 729.54 APERA INSTRUMENTS, LLC Address: 6656 Busch Blvd, Columbus Ohio 43229 Tel: 1-614-285-3080 Email: info@aperainst.com Website: www.aperainst.com - 16 -...
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