Vontech Guardian Sensor Series

Digital Water Quality Sensors

16 industrial-grade digital sensors — chemical and physical — with RS485 Modbus RTU communication. IP68 waterproof, plug-and-play compatible with the Guardian HMI platform. All sensor data feeds into the membrane intelligence platform for advanced analytics and predictive insights via the web portal.

RS485 Modbus RTU
IP68 Waterproof
Guardian HMI Compatible
Remote Calibration
#1
VT-PH-485

Digital pH Sensor

Range
pH 0.0 - 14.0
Accuracy
±0.1 pH
Power
9-36V DC
Housing
SS + PC / IP68
pH
Temperature
#2
VT-ORP-485

Digital ORP Sensor

Range
-2000 ~ +2000 mV
Accuracy
±1%
Power
12V or 24V DC
Housing
SS + PC / IP68
ORP
Temperature
#3
VT-EC-485

Digital Conductivity Sensor

Range
0 - 2000 us/cm
Accuracy
±1.5%
Power
12V or 24V DC
Housing
SS + PC / IP68
Conductivity
TDS
#4
VT-DO-485

Optical Dissolved Oxygen Sensor

Range
0 - 25 mg/L
Accuracy
±0.1 mg/L
Material
SS316L / IP68
Method
Fluorescence optical
DO
Saturation
Temp
#5
VT-CL-485

Digital Residual Chlorine Sensor

Range
0 - 5 mg/L
Accuracy
±5%
Resolution
0.01 mg/L
Method
Constant voltage
Chlorine
Disinfection
#6
VT-SS-485

Suspended Solids (TSS) Sensor

Range
0.01 - 120,000 mg/L
Accuracy
±5%
Method
IR scatter (ISO7027)
Housing
SUS316L / IP68
TSS
Sludge
#7
VT-TUR-485

Digital Turbidity Sensor

Range
0.01 - 4000 NTU
Accuracy
±1% or ±0.1 NTU
Method
IR light scattering
Housing
SUS316L / IP68
Turbidity
NTU
#8
VT-NH-485

Ammonia Nitrogen Sensor

NH3-N Range
0.1 - 1000 mg/L
Accuracy
±5% or ±0.2 mg/L
Response
≤2 minutes
Housing
IP68 / NEMA6P
NH3-N
pH
K+
#9
VT-COD-485

COD / BOD / TOC Sensor

COD Range
0 - 2000 mg/L
Accuracy
±5%
Method
UV 254nm absorption
Material
SUS316L / IP68
COD
BOD
TOC
#10
VT-ION-485

Digital Ion Sensor

Range
0.02 - 1000 ppm
Ion Types
F, Cl, Ca, NO3, NH4, K, CO2
Resolution
0.01 mg/L
Housing
PPS+POM / IP68
Multi-Ion
ISE
#11
VT-CHL-485

Chlorophyll A Sensor

Range
0 - 500 ug/L
Accuracy
±5%
Resolution
0.01 ug/L
Material
SS316L / IP68
Chlorophyll
Algae
#12
VT-CLR-485

Chromaticity / Color Sensor

Range
0 - 100 PCU
Accuracy
±10%
Resolution
0.01 PCU
Housing
SS316L / IP68
Color
PCU
#13
VT-WT-485

Digital Transparency Sensor

Range
2 - 100 cm
Accuracy
±0.3 cm or 5%
Method
Dual-beam IR scatter
Housing
SUS316L / IP68
Transparency
Clarity
#14
VT-ALG-485

Blue-Green Algae Sensor

Range
100 - 300,000 cells/mL
Accuracy
±5%
Method
Fluorescence spectral
Housing
SUS316L / IP68
Algae
Cyanobacteria
#15
VT-FLOW-485

Digital Flowmeter Sensor

Type
Electromagnetic / Ultrasonic
Accuracy
±0.5%
Communication
RS485 Modbus RTU
Housing
IP68
Flow
Feed
Permeate
#16
VT-PRESS-485

Pressure Transmitter

Type
Industrial pressure transmitter
Accuracy
±0.5%
Communication
RS485 Modbus RTU
Housing
SS316L / IP65
Pressure
Feed
Membrane

Need sensors for your water treatment project?

All Vontech sensors are plug-and-play with the Guardian HMI platform, feeding data into the membrane intelligence platform for advanced analytics. Contact us for custom configurations and bulk pricing.

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