YH-2000A Industrial line dissolved oxygen meter YH Series Industrial online water quality monitoring dissolved oxygen meter is a microprocessor-controlled device. The instrument configuration of different types of dissolved oxygen electrodes are widely used in power plants, petrochemical, metallurgy electronics, mining, paper, bio-fermentation, pharmaceutical, food and beverage, water treatment, aquaculture and other industries; aqueous solution and dissolved oxygen values continuous temperature monitoring and control. Meter Features ● LCD large-screen LCD intelligent menu operation ● Chinese ● variety of automatic calibration function ● Signal output optional ● two relay control switch ● manual, automatic temperature compensation ● High limit, low limit, the hysteresis control ● RS485 / / RS232 communication connection optional ● same interface display DO and temperature values ??● has password protection to prevent the misuse of non-staff main technical parameters (1) Measuring range: DO: 0 ~ 25.0mg / L; temperature: 0 ~ 60.0 ℃; (2) Resolution: DO: 0.01mg / L; Temperature: 0.1 ℃; (3) basic error: oxygen: ± 0.2mg / LF · S; temperature: ± 0.3 ℃; (4) or automatically Manual temperature compensation range: 0 ~ 60 ℃; (5) Electrode residual signals: <1 ‰; (6) Response time (final value 90%): 25 ℃ when <60S; 35 ℃ when <30S; (7) Stability : Under constant pressure, every week drift <2% F · S; (8) isolated current output: 0 ~ 10mA (load resistance <1.5KΩ); 4 ~ 20mA (load resistance <750Ω); (9) groups Relay control contact: 3A 240VAC, 6A 28VDC or 120VAC; (10) Meter Power supply: 220VAC ± 10%, 50 ± 1Hz, power ≤3W; 24VDC, Power: ≤1W (optional); 12VDC, Power: ≤1W (optional); (11) Instrument Dimensions: 96 × 96 × 130mm; (12) Meter Installation: panel mounted (embedded); installation hole size: 91 × 91mm; (13) Instrument Weight: 0.6kg ; (14) Instrument working environment: temperature: -10 ~ 60 ℃; relative humidity: less than 90%; In addition to the Earth's magnetic field, has no strong magnetic field around it. DO electrode (temperature 0 ~ 45.0 ℃) ※ electrode installation: flow-through, pipeline, and other installation accessories Sunken own or can be configured to the manufacturers to order. When the aeration tank use, and bubbles to avoid direct contact with the head.