YH-101 type of Sunken Online PH meter YH-101 Industrial Online PH meter is a water quality monitoring control device with a microprocessor. The instrument configuration of different types of pH electrode or ORP electrode is widely used in power plants, petrochemical, metallurgy, electronics, mining, paper, bio-fermentation engineering, pharmaceutical, food and beverage, water treatment, aquaculture, modern farming and other sectors . PH of the aqueous solution (pH) value, ORP (oxidation reduction potential) and temperature values ??for continuous monitoring and control. Instrument features: ● LCD large-screen LCD intelligent menu operation ● Chinese ● variety of automatic calibration function ● Signal output optional ● manual, automatic temperature compensation ● two relay control switch ● High limit, low limit, the hysteresis control ● with screen displays pH (or ORP) and temperature values ??● has password protection to prevent misuse of the non-staff technical parameters: (1) Measuring range: pH: 0 ~ 14.00pH; ORP: -1999 ~ + 1999mV; temperature: -5 to 110.0 ℃; (2) Resolution: pH: 0.01pH; ORP: 1mV; temperature: 0.1 ℃; (3) basic error: pH: ± 0.1pH; ORP: ± 5mV; temperature: ± 0.5 ℃; (4) or automatic Manual temperature compensation range: 0 ~ 110 ℃; (5) Stability: pH: ≤0.02pH / 24h; ORP: ≤2mV / 24h; (6) standard current output: 0 ~ 10mA (load resistance <1.5KΩ); 4 ~ 20mA (load resistance <750Ω); (7) to control two relay contacts: 3A 240VAC, 6A 28VDC or 120VAC; (8) the instrument Power supply: 220VAC ± 10%, 50 ± 1Hz, power ≤3W; 24VDC, power : ≤1W (optional); 12VDC, Power: ≤1W (optional); (9) Instrument Dimensions: 96 × 96 × 130mm; (10) Meter Installation: panel mounted (embedded); mounting cut Size: 91 × 91mm; wall-mounted: 300 × 200 × 167mm; (11) Instrument Weight: 0.6kg; (12) Instrument working environment: temperature: -10 ~ 60 ℃; relative humidity: less than 90%; In addition to the Earth no strong magnetic field around the magnetic field outside interference.