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Summary of Contents for Apera Instruments DO850
- Page 1 DO850 Portable Optical Dissolved Oxygen Meter Instruction Manual APERA INSTRUMENTS, LLC aperainst.com v3.0 - 1 -...
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Page 2: Table Of Contents
Contents Overview ........................- 3 - Luminescent optical sensor......................- 3 - Intelligent Instrumentation ......................- 3 - Technical Specifications ................... - 4 - Instructions ....................... - 4 - LCD Screen ............................- 4 - Key Operation ..........................- 5 - Batteries ............................ -
Page 3: Overview
1 Overview Thank you for purchasing Apera Instruments DO850 Portable Optical Dissolved Oxygen Meter. The DO850 measures dissolved oxygen in water using luminescence technology through an optical sensor and displays data with intelligent instrumentation. Compared to conventional electrochemical dissolved oxygen meter, the DO850 is more accurate, stable and easier to use. -
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
Measurement mode icon Auto lock icon ① ⑦ Reading/Measured Value ② Temperature Compensation ATC — Auto Temperature Compensation Symbol ③ ⑧ MTC — Manual Temperature Compensation Units of Measurement ④ Temperature unit Reading Stability Icon ⑤ ⑨ Temprature value / Symbol Low Voltage Icon ⑥... -
Page 6: Batteries
3.3 Batteries The instrument uses three AA alkaline batteries. Battery life > 200 hours (without backlight). When the display shows symbol as shown in Figure-3, replace the battery. Fig.-3 3.4 Instrument Socket The instrument uses an 8-pin socket that is protected by a gray rubber cap seal. Eight-pin socket (right) - connect DO electrode. -
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
soaked in clean water at room temperature for 24 hours. If the water temperature is low, soaking time should be 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 replace it immediately (some back-up sponges are included in the kit). -
Page 9: Temperature Unit 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: ˚C or ˚F Air Pressure Compensation The instrument has automatic air pressure compensation function. -
Page 10: Special Notes For Calibration
these steps: (A) Preparation of 100ml of oxygen-free water: in the 100ml beaker, weigh 2g of anhydrous sodium sulfite (Na ) and add 100ml of distilled or deionized water to dissolve. Oxygen-free water is only 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 DO reading to completely stabilize. -
Page 11: Parameter Settings
influenced by temperature, and the probe senses temperature slower than dissolved oxygen. 8 Parameter Settings 8.1 Press the key in the measurement mode to enter the parameter setting mode P3.0, key to switch the menu P3.0 →P4.0; In P3.0 mode, press press the to enter P3.1, press... - Page 12 P3.3—Salinity Compensation (0~45 ppt) 1. Press , 0 flashes, Press to adjust salinity value (0 to 45 ppt), Press 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) 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 16 901.79 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: https://aperainst.com - 16 -...
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