Dissolved Oxygen

Our range

• DSMD1900 Digital DO Sensor: optical luminescence with no membrane to replace and no oxygen consumption, 0 … 20 mg/L, RS485 Modbus RTU output.
• WSDO4051 Wastewater DO Sensor: polarographic sensor with a stainless steel grit mesh membrane, 0–20 mg/L and calibration intervals over 60 days in harsh effluent.
• WSDO1001 Pure Water DO Sensor: trace oxygen measurement in boiler water and desalted water, ±1 ppb accuracy and a 0.1 µg/l detection limit in a 316L body.
• WSDO2001 High Temperature DO Sensor: withstands steam sterilisation up to 130 °C, with a composite fluoroplastic membrane and PT1000 compensation.
• WMDO1001-FM DO Meter: field-mount transmitter that switches automatically from µg/l to mg/l, with 4–20 mA and RS485 outputs in an IP54 housing.
• WMDO1001-PN DO Meter: panel-mount meter, 0–19.99 mg/l with ±1.5% FS accuracy, elevation and salinity compensation and dual relays.
• PMDO1001 Portable DO Meter: handheld polarographic meter for spot checks, 0.00 … 20.0 mg/L and 0–500% saturation.

Applications

• Sewage treatment aeration tanks
• Industrial effluent treatment
• Boiler feed water and condensate
• Power plant desalted water
• Aquaculture
• Processes needing steam sterilisation

How to choose

• Concentration: ppb trace oxygen calls for a pure water sensor; mg/L suits wastewater.
• Maintenance: optical sensors avoid membrane changes, polarographic suits trace levels.
• Temperature: choose the high temperature sensor above normal water conditions.
• Online or portable: fixed sensors with a meter, or a handheld for rounds.

Our engineers install, calibrate and service dissolved oxygen instruments for treatment plants and power stations in Malaysia. Contact LKS for sizing advice or a quotation.