Design: Portable aluminum alloy structure with 4.3-inch high-resolution color LCD touch screen
Detection Range: 0.10–5.00 mg/L; Transmittance: 0.00–100.00% (Resolution 0.01%, Accuracy ±2.0%)
Absorbance Resolution: 0.001; Transmittance Repeatability ≤0.2%; Stability ≤0.3% (3 minutes)
Functions: Intelligent input, automatic result saving, report printing, multi-curve calibration
Communication: RS232, USB with online data transfer and monitoring network function
Power Supply: AC 220V or rechargeable lithium battery
 

Test Method: Photoelectric colorimetric detection principle
Models: P9022 (2 parameters), P9025 (5 parameters), P9029 (9 parameters)
Parameters: Residual Chlorine, Total Chlorine, Combined Residual Chlorine, Chlorine Dioxide, Nitrite, Dissolved Oxygen, Ammonia Nitrogen, Iron
Measuring Range: 0–12 mg/L (depending on parameter); Minimum Indication: 0.001 mg/L
Accuracy: Linearity Error ±5% FS; Repeatability 2%
Features: Microcomputer with touch keyboard, backlight LCD display, multi-point curve calibration
Power Supply: AC 220V / 50Hz / 5W
 

Test Method: DPD photoelectric colorimetric determination
Parameters: Ozone, Chlorine, Total Chlorine, Carbon Dioxide
Measuring Range: 0–5 mg/L (Ozone 0–2 mg/L)
Minimum Indication: 0.01 mg/L; Linearity Error: ±5% F.S; Repeatability: 3%
Features: Dual optical path system, automatic light source selection, desktop microcomputer configuration
Power Supply: DC 9V / 0.1A
Optional: Built-in printer, rapid assay reagents for long-term stable supply
 

Function: Portable multi-parameter water quality meter using DPD photometric method with photoelectric colorimetry
Measurement Parameters: Residual chlorine, total chlorine, combined residual chlorine, carbon dioxide, ozone
Measuring Range & Accuracy: 0–5 mg/L, 0–10 mg/L, 0–2 mg/L; minimum indication 0.01 mg/L; linear error ±5% FS; repeatability 3%
Display & Operation: Microcomputer touch buttons, LCD backlit display, auto-zero and calibration, stable and maintenance-free performance
Power Supply: 6F22 9V battery, with low voltage prompt and auto shutdown after 10 minutes
Portability: Compact design with portable case, fast warm-up (30 seconds), equipped with rapid determination reagents
 

COD Range: 0–600 mg/L (±5% F.S, 0.1 mg/L resolution)
TOC Range: 0–240 mg/L (±5% F.S, 0.1 mg/L resolution)
Turbidity Range: 0–300 NTU (±5% F.S, 0.1 NTU resolution)
Light Source: 254nm UV-LED with 365nm turbidity compensation
Interface: RS-485 MODBUS, 4–20mA output
Operating Conditions: 5–40℃, max depth 10m, IP68 protection
Installation: Flow cell or submersible mounting, 10m cable
 

Measuring Range: 0–20 mS/cm, 0–200 mS/cm | Accuracy: ≤±1% | Response Time: ≤15 s
Measured Variables: Conductivity, Resistivity, TDS, Salinity | Temperature Range: 0–60℃, Accuracy: ≤±0.3℃
Built-in temperature sensor with automatic water temperature compensation
Digital Output: RS-485, MODBUS-RTU; Two-way communication, low power consumption (0.5 W)
Construction: Graphite electrode, ink/epoxy/ABS housing, 316L liquid connection, IP68 waterproof
Installation: Flow-through tank, pipe, or sink mounting; Coaxial design ensures stability and anti-interference
Power Supply: 12–24 VDC; Cable length: 5 m standard, customizable
 

Measurement Range: 0.2–40000 ppm, Resolution: 0.001 mg/L, Accuracy: ±5% F.S
Temperature Range: 0–50℃, Resolution: 0.1℃, Accuracy: ±0.5℃, Automatic Temperature Compensation
Digital Output: RS485, MODBUS-RTU; Easy integration with PLCs, computers, and IoT systems
Two-point calibration; Adjustable slave address, baud rate, range, and coefficients online
Housing Material: PPS, ABS, PC+Stainless Steel; Protection Grade: IP68
Installation: Flow cell, Submerged, 3/4″ NPT threads; Cable length: 5 m
Low power consumption: <1 W; Compact dimensions: Φ39×205 mm
 

Measurement Range: 0.00–14.00 pH, Accuracy: ≤±0.02 pH, Resolution: 0.01 pH
Response Time: 20 sec; Drift: ≤±0.1 pH/24h; Sensitive Membrane Impedance: ≤500 MΩ
Stable reference system: Ag/AgCl with gel electrolyte, excellent anti-pollution performance
PTFE diaphragm for long-term online monitoring without clogging
Operating Temperature: 0–60℃, Waterproof Rating: IP68
Output Mode: MODBUS / RS-485, Power Supply: 12–24 VDC, Rated Power: <0.5 W
Installation: 3/4″ NPT Thread, suitable for online water quality monitoring
 

Measurement Range: 0–100 mg/L NH4-N, Accuracy: ±10% or ±0.5 mg/L, Resolution: 0.01 mg/L
pH Range: 0–10, Accuracy: ±0.1 pH, Resolution: 0.01
Automatic compensation: pH, temperature, optional potassium ion
Housing Material: POM, compact, corrosion-resistant; Protection Class: IP68, Maximum depth: 10 m
Self-cleaning brush for low maintenance and long-term reliability
Digital Output: RS-485, MODBUS protocol, strong anti-interference signal
Power Supply: 12VDC±20%, Current <100 mA (<200 mA during cleaning), Cable Length: 10 m (customizable)
 

Measurement Range: -2000 to 2000 mV, Accuracy: ±15%, Resolution: 1 mV
Electrode Material: PTFE anti-fouling, Platinum, PC housing
Gel electrolyte resists interference from external ions and pressure changes
Digital output: MODBUS/RS485; Calibration: One-point calibration
Installation: 3/4″ NPT Thread, Cable length: 5 m (customizable)
Operating Temperature: 0–60℃, Waterproof Rating: IP68
Low power consumption: <0.5 W