K⁺ · Smart Potassium Ion Sensor

M200 Smart Potassium Ion Sensor

PVC membrane ion selective electrode (ISE) directly measures potassium ion in water, 0.04–39000 ppm range, 0.001 ppm resolution, ±5%FS accuracy, automatic temperature compensation. IP68 full protection, A/C housing styles for submersion installation, RS485 digital direct to monitor host, reagent-free, low maintenance, suitable for wastewater and industrial process water body online monitoring.

View all models Get selection advice
Potassium Ion Sensor
39000 ppm
Max Range
0.001 ppm
Resolution
±5 %FS
Measurement Accuracy
IP68
Full protection · RS485
Features

Reagent-free Ion Selective Method, Potassium Ion Long-term Online

The PVC membrane ISE measures potassium ion directly without reagents or a peristaltic pump. Automatic temperature compensation and a wide range provide stable, low-maintenance, long-term monitoring.

Advanced Circuitry

High-impedance measurement circuit, high-precision acquisition of weak potential signals, anti-interference.

Easy Installation

A/C housing styles, submersion multiple methods, standard 5m cable.

Industrial-grade Protection

IP68 full protection, PPS / POM+Stainless Steel housing selectable by scenario.

Fast Response

Ion selective electrode fast response, reagent-free, low maintenance.

Model Selection

Potassium Ion Sensor Model Overview

The series supports multiple installation methods and water types. Filter by installation method, then add a model to your selection list or contact our engineers for verification.

M200-ION-KA-A
RS485 Digital
Style A · Submersion (PPS)
Range0.04–39000 ppm
Sensitive MembranePVC Membrane
pH Range2–12 pH
Housing MaterialPPS
FertilizerAquacultureProcess
M200-ION-KA-C
RS485 Digital
Style C · Submersion (POM+Stainless Steel)
Range0.04–39000 ppm
Sensitive MembranePVC Membrane
pH Range2–12 pH
Housing MaterialPOM+Stainless Steel
IndustrialInfluentProcess
Specifications

Complete Specifications

Series general specifications. Individual parameters vary by model (range, housing, output method), subject to selection confirmation.

Measured Parameter
Potassium Ion (K⁺)
Measuring Range
0.04–39000 ppm
Measurement Principle
PVC Membrane Ion Selective Electrode Method (ISE)
Suitable for pH Range
2–12 pH
Measurement Accuracy
±5%FS
Resolution
0.001 ppm
Repeatability/Linearity
±4%
Temp. Compensation
Automatic
Temp. Measurement range
0.0–50.0°C
Pressure Range
0–1 bar
Relative Humidity
<90%
Housing Material
PPS (Style A) / POM+Stainless Steel (Style C)
Process Connection
G1 · G3/4 · G3/4 · NPT3/4
Cable Length
Standard 5m (customizable)
Protection Rating
IP68
Power Supply
DC9–30V (recommended DC12V)
Electrical Connection
RS485 (MODBUS-RTU) or 4-20mA Analog
Installation
Submersion (Style A) / Submersion (Style C)
Warranty
Half a year
Applications

Suitable Water Types

Potassium ion is widely used in fertilizer production, aquaculture water body and nutrient salt monitoring. PVC membrane ion selective electrode reagent-free online monitoring, suitable for long-term unattended operation. Different water bodies categorized below, you can choose the corresponding housing style and housing.

Industrial & Fertilizer

4
FertilizerChemicalPharmaceuticalFood

Aquaculture & Water Supply

3
AquacultureDrinking WaterTap Water

Municipal & Environmental

3
Wastewater TreatmentSurface WaterRiver Monitoring

Environmental Monitoring

2
Landscape WaterNutrient Monitoring
Get a recommendation

Tell us your water type and range, we'll recommend a Potassium Ion model

Send us the on-site potassium ion range, water body pH and installation conditions, and our engineers will respond with a potassium ion selection recommendation including housing style, sensitive membrane, housing and installation. Potassium ion probe plug and play connects to 8-channel monitor host, can be linked with pH and other ion parameters.

Contact an engineer