GX-100

Modular Water Supply Quality Monitor

The GX-100 is a modular water quality monitoring system tailored for drinking water regulation compliance. It measures seven essential parameters—turbidity, color, free residual chlorine, pH, conductivity, water pressure, and water temperature—using detachable sensor modules for rapid on-site maintenance and stable, continuous performance.

GX-100

Modular Water Supply Quality Monitor

Why Choose GX-100

Fully Modular Design – Sensor modules can be swapped easily without tools for fast service.
Multi-Parameter Coverage – Covers all key drinking water quality metrics in one system.
Efficient Maintenance – Spare modules can be calibrated off-site, reducing field downtime.
Smart Connectivity – Interface module connects via USB or Bluetooth to PCs or mobile devices for streamlined monitoring and calibration.

Key Advantages of GX-100

Easy Sensor Replacement

Tool-Free Modularity

Swap measurement modules in seconds for minimal field work and maximum uptime.

Comprehensive Parameter Coverage

7 Core Metrics

Measures essential quality indicators including turbidity, pH, chlorine, and more in one platform.

Off-Site Calibration Ready

Spare-Module Workflow

Run having backups calibrated offline for seamless on-site replacement.

Digital Monitoring Support

USB & Bluetooth Enabled

Monitor, configure, and calibrate remotely using PC, tablet, or smartphone tools.

Technical Specifications of GX-100

Interface Module: Displays measurement values. Also possible to communicate with mobile devices and PCs.

Product name	Modular Water Supply Quality Monitor
Model	GX-100
Measurement items	Turbidity, color, free residual chlorine, water pressure, pH, conductivity, water temperature (Flow rate can also be selected and displayed (reference value)) *The measurement subject is tap water whose measurement item values are within the ranges stipulated in the Japanese drinking water testing method.
Measurement method	Refer to Table 1
Measurement range	Refer to Table 1
Repeatability	Refer to Table 1
Display method	i)Display of each component by LCD on the interface module ii)PC display and operation is also possible via USB connection () iii)Display and operation on mobile devices is also possible via Bluetooth^® connection () *A dedicated app is required. Up to eight items (including flow rate) can be displayed simultaneously.
Calibration method	Refer to Table 1
Automatic zero calibration	(Turbidity, color, free residual chlorine) Calibration method: Filtered water sample Calibration Start method: Calibration starts with an internal timer and Modbus^® communication Calibration period: 1 to 9999 hours (arbitrary setting) Calibration time: 20 minutes
Automatic drainage	Start method: Drainage starts with an internal timer and Modbus^® communication Drainage period: 1 to 9999 hours (arbitrary setting) Drain count: 1 to 9 times (arbitrary setting) Drain time: 9 to 45 minutes
Cleaning method	Turbidity, color: Continuous cleaning of cell window with wiper Free residual chlorine: Continuous cleaning with beads
Sample water conditions	Temperature: 0 to 40℃ (should not be frozen) Pressure: 0.1 to 0.75 MPa Conductivity: 100 μS/cm or more Amount introduced into the analysis section (flow rate): 80 to 100 mL/min ・When test-running, be sure to flush the instruments thoroughly before passing water through them. ・Be sure to provide a bypass for the piping leading to the instrument. ・If there is a risk of the sample water freezing, take measures by using insulation and heat retention device. ・Water samples measured with this device cannot be used for distribution. ・To keep the flow rate stable, avoid sudden fluctuations in water pressure.
Communication	Interface: RS-485 communication (Modbus^® protocol) Communication speed: 19200 bps *Can be changed (2400 bps to 230400 bps)
Function	Liquid leak detection function
Data memory (When SD card is inserted)	The measured values of the measurement items are stored in the SD card in the interface module. Memory interval: 1 second, 1 minute, 1 hour (every hour on the hour) Data memory time: 1 second intervals - approx. 99 days 1 minute intervals - approx. 99 days 1 hour interval - approx. 1 year * The latest data will be stored in memory.
Wiring connection port	Wiring inlet (suitable cable: φ7.0 to 11.0 mm)
Pipe connection port	Sample water inlet: φ6/4 pipe Drain: φ6/4 pipe Air outlet: φ6/4 pipe Sample water outlet: φ6/4 pipe
Structure	Measurement unit: Indoor installation type Exterior case material: ABS, SUS304
Structure	Interface module: Indoor/outdoor installation type (IP65 equivalent) Exterior case material: AES
Main material of liquid contact parts	PMMA, PEEK, PPS, ABS, PVC, PVDF, FKM, EPDM, glass, ceramic, SUS304, C3604, PET, FEP
Power supply	DC 24 V ±10％
Power consumption	75 W
Mass	Measurement unit: Approx. 10 kg Interface module: Approx. 1kg
External dimensions	Measurement section: 480(W) x 166(D) x 323(H) Interface module: 155(W) x 119(D) x 155(H) (unit: mm)
Installation temperature conditions	Ambient temperature: 0 to 40°C
Installation humidity conditions	Ambient humidity: 85% or less (no condensation)
Color	Black
Installation environment conditions	・A flat, stable location with little vibration or shock ・The atmosphere must not contain dust, mist, corrosive gases, etc. ・Atmospheric pressure ・A place not exposed to direct sunlight (measurement unit) ・A well-ventilated area ・Altitude below 2000m

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● Table1 Measurement item specifications

Measurement item	Measurement method	Measurement range	Repeatability	Calibration method
Turbidity	90° scattered light method	0.00 to 10.00 NTU/degree	±2.5% of full scale	Polystyrene latex standard solution Formazin standard solution
Color	Transmitted light absorbance method	0.0 to 20.0 PtCo/TCU/degree	±5.0% of full scale	Color standard solution
Free Residual Chlorine	Polarographic method	0.00 to 5.00 mg/L	±2.5% of full scale	DPD colorimetric method
Water Temperature	Thermistor method	0.0 to 50.0 °C	±0.5 °C	Standard thermometer
pH	Glass electrode method	pH 0.00 to 14.00	±0.1 pH	pH standard solution (NIST standard/USA standard)
Conductivity	AC 2 electrode method	0 to 5000 μS/cm 0.0 to 500.0 mS/m	±2.0% of full scale	KCl standard solution
Water Pressure	Semiconductor detection method	0.000 to 1.000 MPa 0 to 10 bar	±1.0% of full scale	Reference pressure gauge