MIK-TDS210-B Conductivity meter

The MIK-TDS210-B is an intelligent online conductivity analyzer and EC controller. It continuously monitors EC (conductivity), TDS or ER (resistivity) together with temperature, and provides 4–20 mA, relay and RS485 outputs.

It measures EC (electrical conductivity), TDS (total dissolved solids) or ER (resistivity), together with temperature.

The MIK-TDS210-B is described as a conductivity/hardness/resistivity online analyzer. Its measurement is based on conductivity; please tell us your water type and the hardness information you need, so we can confirm whether it is suitable for your application.

The range depends on the cell constant of the connected electrode:

• K = 0.01 electrode: 0.02–20.00 μS/cm
• K = 0.1 electrode: 0.2–200.0 μS/cm
• K = 1.0 electrode: 2–2000 μS/cm
• K = 10.0 electrode: 0.02–20 mS/cm

Choose the cell constant according to your expected conductivity. Low cell constants (0.01 or 0.1) are used for pure and ultrapure water, K = 1.0 for general water such as tap water and many process waters, and K = 10.0 for high-conductivity solutions. An electrode selection chart is shown on this page, or send us your expected range for a recommendation.

• Basic error of electronic unit: EC/TDS/ER ±1% FS
• Temperature (NTC10K / PT1000): ±0.3 °C
• Overall accuracy: 2%
• Current output: 0.2% FS

The meter supports NTC10K or PT1000 temperature sensors, with manual or automatic temperature compensation over a temperature range of 0–120 °C.

• Analog output: 4–20 mA, maximum loop 750 Ω, 0.2% FS
• Communication: RS485, Modbus-RTU
• Relay output: 250 VAC / 3 A

The relays are generally used for high or low conductivity alarms and simple control tasks, for example controlling a dosing pump, a drain or blowdown valve, or signaling when water quality is out of range.

• AC: 220 VAC ±10%, 50/60 Hz
• DC: 24 VDC ±20%

• Operating temperature: 0–60 °C
• Relative humidity: 10%–85% RH

Yes. With a K = 0.01 electrode, the range is 0.02–20.00 μS/cm, and the meter can display resistivity (ER), which is commonly used for pure and ultrapure water. For very low conductivity, use a flow-through installation and avoid air contact, as absorbed CO₂ affects the reading.

Asmik conductivity sensors such as the MIK-TDS6012, MIK-TDS7001, MIK-TDS7002 and MIK-TDS7003 are available. Please tell us your application and range so we can recommend the sensor and cell constant.

Calibration is generally performed by entering the electrode's cell constant or by using a conductivity standard solution close to your process range. Please follow the calibration procedure in the manual.

See also the MIK-TDS210-C conductivity meter and EC controller and the MIK-EC8.0 conductivity meter.

It is widely applied in thermal power, chemical fertilizer, environmental protection, metallurgy, pharmacy, biochemistry, food and water industries.

To help us select the correct configuration, please provide:

• Medium and expected conductivity / TDS / resistivity range
• Process temperature
• Whether a sensor is required, and the preferred cell constant
• Temperature sensor type (NTC10K or PT1000)
• Output and relay requirements
• Power supply (AC or DC)
• Quantity

Send your requirements to info@asmik.com or contact us via WhatsApp at +86 13325716921.