Dissolved Oxygen Meter

Dissolved oxygen Meters. (hereinafter referred to as the meter) is an on-line water quality monitor with a microprocessor. Widely used in industrial water, domestic water and sewage treatment, and aquaculture and so on. Continuous monitoring and control of oxygen content in aqueous solution. The instrument is equipped with LCD display; Intelligent English menu operation; With current or voltage output, measuring range can be set freely, high and low over-limit alarm prompt and control switch of two groups of relays, hysteresis range can be adjusted; Automatic or manual temperature compensation, electrode automatic calibration. Characteristics ● IP65 protection level ● High and low volume alarm ● RS485 communication ● A variety of electrode materials are available
  • Specification

Technical Specifications & Engineering Parameters

Measurement Principle Polarographic / Optical fluorescence lifetime sensing technology
Measuring Range DO: 0.00 to 20.00 mg/L (ppm) or 0.0 to 200.0% air saturation; Temp: 0.0°C to 50.0°C
Measurement Accuracy DO: ±1.5% of reading or ±0.1 mg/L; Temperature: ±0.3°C
Temperature Compensation Automatic Temperature Compensation (ATC) via integrated NTC / Pt1000 sensor
Salinity & Pressure Correction Manual / Automatic salinity correction (0-40 g/L) and barometric pressure compensation
Controller Display Large LCD screen with blue/white backlight showing DO value, temperature, and output current
Output Signals Dual isolated 4-20mA outputs (Channel 1: DO, Channel 2: Temperature), RS485 Modbus-RTU
Alarm Relays Dual relay contacts (High/Low limits) with programmable hysteresis and delay timer
Sensor Construction Submersible 316L / POM body with replaceable dissolved oxygen membrane cap / optical cap
Power Supply AC 90-260V 50/60Hz or DC 24V
Enclosure Rating Controller IP65 panel/wall mount; Sensor IP68 waterproof


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