Máy đo oxy hòa tan kỹ thuật số RCYAGO Máy đo chất lượng nước JPB-70A

Hot Sale Digital Dissolved Oxygen Meter Portable JPB-70A Dissolved Oxygen Pen Water Quality Tester Dissolved Oxygen Detector

Features

• Model Number: JPB-70A
• Type: Portable Dissolved Oxygen Meter
• Measurement range: 0.0 to 20.0 mg/L
• Accuracy: 0.3mg/L
• Resolution: 0.1
• Residual current: not more than 0.15mg/L
• Response time: no more than 30s (90% response at 20°C)
• Automatic temperature compensation range: (0 ~ 40) °C
• Measuring range:
• 1. Dissolved oxygen: (0.0～20.0)mg/L
• 2. Temperature: (0 ~ 40) °C
• Basic error:
• 1. Dissolved oxygen: ±0.3mg/L
• 2. Temperature: ±1°C
• LCD
• Automatic temperature compensation, fast response time
• Portable, easy to carry
• With our factory dissolved oxygen electrode (polarized film type)
• Power supply: 1.5V button battery (4)
• Dimensions (mm): Φ40*185 (without electrodes)
• Size:185(mm)
• Weight: 88g
• Instrument keyboard description:
• Key Function
• (switch) power on and off.
• CAL calibration key (long press 5 seconds to enter the calibration interface)
• HOLD lock/hold key, Fahrenheit/Celsius temperature conversion key.
• JPB-70A pen-type intelligent dissolved oxygen analyzer (hereinafter referred to as the instrument) is mainly designed to facilitate the user to carry on-site operation. The instrument can be divided into two parts: sensor and electronic unit. The sensor uses a polarographic film-type dissolved oxygen electrode. The electronic unit is composed of high integrated circuits. The instrument uses a dot-matrix liquid crystal display to display dissolved oxygen values and temperatures.

Packing List:

• 1 x Dissolved Oxygen Meter
• 1 x English Instruction Manual

Calibration:

The instrument is calibrated in two ponits. Please prepare a cup of Oxygen free and a cup of seturated dissolved Oxygen(preparation of Oxygen free water and saturated dissolved oxygen water); First see the appendix 1

Zero calibration: First clean the the probe in distilled water and dry the probe with soft cloth; then dip the probe into the zero oxygen solution, long press "cal" button for 5 seconds, and cal will display, then stir the probe and wait for about 2 minutes till the value become stable( zero or other value are OK), then press CAL to confirm the calibration, then cal will show again, then "end" will display, then Full will flash on the screen, then zero calibration is OK;

Saturated Oxygen Calibration: First clean the the probe in distilled water and dry the probe with soft cloth; Then dip the probe into the Saturated Oxygen solution, long press "cal" button for 5 seconds, and cal will display, then stir the probe and wait for about 3 minutes till the value become stable( you could compare the value in the Appendix in the manual book), then press CAL to confirm the calibration, then cal will show again, then "end" will display, then Full will flash on the screen, then Saturated Oxygen calibration is OK;