MicroSENSOR M200 · Digital Water Quality Sensor Platform

One sensor platform covering every parameter of water quality monitoring

Conductivity, dissolved oxygen, turbidity, free chlorine, ions, algae... over 10 parameters, hundreds of models with unified naming and interface — all on RS485 / Modbus digital bus, IP68 full housing protection, plug-and-play with multi-parameter monitoring hosts.

Browse Parameter Series Get selection advice
Sensor Product Family
11+
Measurable Parameters
100+
Active Models
IP68
Full Housing Protection
RS485·Modbus
Digital Output / 4-20mA Compatible
Why M200

One Platform, No System Hopping

From conventional physicochemical to algae and ions, all probes share one set of model rules, one digital bus, and one installation method. No more switching between different brands and protocols during selection, wiring, or maintenance.

Direct Digital, No Transmitter

RS485 / Modbus direct to host. One bus connects multiple probes, eliminating transmitters and analog wiring.

All Parameters, One Naming System

M200-CD / DO / TUR / CL / ION... unified coding with consistent datasheet structure, making comparison and replacement effortless.

Industrial-grade Protection

IP68 full protection with PPS / stainless steel and other housing options for submersion, flow-through, and insertion installation across scenarios.

Works with Monitor Host

8-channel monitor host with plug-and-play functionality, on-site configuration, and ready-to-measure out-of-box experience — no need for separate instruments for each probe.

Select by Parameter

M200 Parameter Matrix

Divided into two series: general water quality and ion selective electrodes. Cards show representative specifications for each parameter. Click "View Series" to see all models and selection parameters.

General Water Quality Parameters

12 items
pH
Combination Electrode

pH Value

pH Value
Range0.00–14.00 pH
Resolution0.01 pH
Accuracy±0.2 pH
IP68 · Submersion/Flow-through · 304L·POM · Φ30mm
View Series
ORP
Electrode · Ion Adsorption

Redox Potential

Redox Potential
Range±2000 mV
Resolution0.1 mV
Accuracy±0.2 mV
IP68 · Submersion/Flow-through · 304L·POM · Φ30mm
View Series
DO
UV Fluorescence

Dissolved Oxygen

Dissolved Oxygen
Range0–20 mg/L
Resolution0.01 mg/L
Accuracy±2% FS
IP68 · Submersion/Flow-through · Φ30mm · Maintenance-free Fluorescence
View Series
EC
Diaphragm Polarography

Conductivity

Conductivity
Range0–2000 μS/cm
Resolution0.1 μS/cm
Accuracy±2% FS
IP68 · Submersion/Flow-through · 304L·POM · Φ30mm
View Series
Cl
Membrane Method

Free Chlorine

Residual Chlorine
Range0–20 mg/L
Resolution0.01 mg/L
Accuracy±2%
IP68 · Submersion/Flow-through · Φ30mm · Drinking Water Approved
View Series
NTU
Scattered Light

Turbidity

Turbidity
Range0–4000 NTU stepped
Resolution0.001 NTU
Accuracy±3% FS
IP68 · Submersion/Flow-through · Φ45/Φ80mm · <0.2MPa
View Series
COD
UV254 Dual-wavelength Absorption

COD

COD
Range0–500 mg/L
Resolution0.01 mg/L
Accuracy±5%
IP68 · 316L · Φ45mm · No Reagents
View Series
NH4
Membrane-covered ISE

Ammonia Nitrogen

Ammonia Nitrogen
Range0–100 mg/L stepped
Resolution0.01 mg/L
Accuracy±5% FS
IP68 · PC · Φ30mm · <0.3MPa
View Series
SS
IR Light Scattering

Suspended Solids

Suspended Solids
Range0–1500 mg/L
Resolution0.1 mg/L
Accuracy±5%
IP68 · 316L · Φ45mm · measurable up to 50000 mg/L
View Series
Chl
Fluorescence

Chlorophyll-a

Chlorophyll-a
Range0–500 μg/L
Resolution0.01 μg/L
Accuracy±5% FS
IP68 · 316L · Φ45mm · 0–100 RFU Optional
View Series
BGA
Fluorescence

Blue-Green Algae

Blue-green Algae
Range0–300,000 cells/mL
Resolution1 cells/mL
Accuracy±5%
IP68 · 316L · Φ45mm · Algae Bloom Warning
View Series
Oil
UV Fluorescence

Oil in Water

Oil-in-Water
Range0–50 ppm
Resolution0.001 ppm
Accuracy±3% FS
IP68 · 316L · Φ45mm · 0–0.50 FLU Optional
View Series

Ion Selective Electrode Series

12 Ion Types · Mixable on the Same Host
Uniform ±5.0% FS AccuracyPressure 0-3 barPC/PBT Corrosion-resistant HousingThread NPT3/4 · M39×1.5RS-485 / 4~20mAIP685m Signal Cable (Customizable)
NO3-
RS116
Nitrate Ion
0.01–14000 mg/L
Customizable Range
Cl-
RS117
Chloride Ion
1.8–35000 mg/L
Customizable Range
F-
RS118
Fluoride Ion
0.1–1900 mg/L
Customizable Range
Cu2+
RS119
Copper Ion
0–6400 mg/L
Customizable Range
Pb2+
RS120
Lead Ion
0–20000 mg/L
Customizable Range
K+
RS121
Potassium Ion
0–39000 mg/L
Customizable Range
Ca2+
RS122
Calcium Ion
0–40000 mg/L
Customizable Range
Na+
RS123
Sodium Ion
0–23000 mg/L
Customizable Range
CN-
RS124
Cyanide Ion
0–260 mg/L
Customizable Range
Br-
RS125
Bromide Ion
0–50000 mg/L
Customizable Range
I-
RS126
Iodide Ion
0–50000 mg/L
Customizable Range
Ag/S
RS127
Silver Sulfide Ion
0–50000 mg/L
Customizable Range
Go to ISE Series
Probe + Host

Probes Selected, Connect Directly to Host

All M200 probes feature digital output, connecting via a single RS485 bus to the 8-channel monitor host — the same host supports both general parameters and ion electrodes simultaneously, with on-site configuration for immediate readings.

Probe

M200 Probe

11 Parameters Available, IP68 Submersion / Flow-through

SENSOR

RS485 / Modbus

One Bus Connects Multiple Probes, No Transmitter Needed

DIGITAL BUS
Host

8-channel Monitor Host

Wall-mounted, On-site Configuration, Ready Out of the Box

MONITOR
Learn about Multi-parameter Monitor
Configure by Scenario

Recommended Parameters by Water Type

Organized by common project configurations for convenient one-stop on-site setup. Specific ranges and models can be confirmed on each series page, or contact us directly for a complete selection.

Municipal Wastewater / WWTP

WWTP

Dissolved OxygenMLSSAmmonia NitrogenNitratepH / ORPCOD

Pure Water / UPW / RO

PURE WATER

Conductivity (UPW Range)pHDissolved Oxygen

Surface Water / River Monitoring

SURFACE WATER

TurbidityDissolved OxygenChlorophyll-aBlue-Green AlgaeConductivitypH

Drinking Water / Secondary Supply

DRINKING WATER

Free ChlorineTurbiditypHConductivity

Aquaculture

AQUACULTURE

Dissolved OxygenpHAmmonia NitrogenConductivity / Salinity

Power / Boiler / Circulating Water

POWER · BOILER

ConductivitypHDissolved OxygenFree Chlorine

Petrochemical / Oily Wastewater

PETROCHEM

Oil in WaterCODpHConductivity
Get a recommendation

Tell Us Your Water Type and Parameters, We'll Provide a Complete Selection

Whether replacing a single probe or setting up a new monitoring point, send us your water quality conditions and parameters to measure, and our engineers will reply with a selection recommendation including models, ranges, and installation methods.

Contact an engineer