Innovative Technologies

Portable Conductivity/DO Meter (QXM-CO394)

Portable Conductivity/DO Meter (QXM-CO394)

Large LCD screen with controllable white backlight. Built-in microprocessor chip has Intelligent functions such as auto calibration, ATC, data storage, function settings, auto diagnosis, auto power off, and under voltage prompt, etc.
Features

• Large LCD screen with controllable white backlight
• Built-in microprocessor chip has intelligent functions such as auto calibration, ATC, data storage, function settings, auto diagnosis, auto power off, and undervoltage prompt
• Auto recognition of 8 conductivity standard solutions with two options: Europe & USA, and China
• Functions include ATC, auto salinity compensation, and manual pressure compensation
• Polarographic DO electrode with short polarization time (3–5 minutes)

Technical Specification

Specifications

Category Specification
Conductivity Range (0.00 ~ 19.99) μS/cm; (20.0 ~ 199.9) μS/cm; (200 ~ 1999) μS/cm; (2.00 ~ 19.99) mS/cm; (20.0 ~ 199.9) mS/cm
TDS Range (0 ~ 100) g/L
Salinity Range (0 ~ 100) ppt
Resistivity Range (0 ~ 100) MΩ·cm
Cond. Resolution 0.01 / 0.1 / 1 μS/cm; 0.01 / 0.1 mS/cm
Cond. Accuracy ±1.0% FS; Overall: ±1.5% FS
Cond. Temp. Compensation (0 ~ 100)°C (Auto/Manual)
Electrode Constant 0.1 / 1 / 10 cm⁻¹
DO Range (0 ~ 20.00) mg/L (ppm), (0 ~ 200.0)%
DO Resolution 0.1 / 0.01 mg/L (ppm); 1 / 0.1 %
DO Accuracy Electrode: ±0.10 mg/L; Instrument: ±0.40 mg/L
DO Response Time ≤30s (25°C, 90% response)
Residual Current ≤0.1 mg/L
DO Temp. Compensation (0 ~ 45)°C (Auto)
Salinity Compensation (0 ~ 45) ppt (Auto)
Pressure Compensation (66 ~ 200) kPa (Manual)
DO Auto Calibration Air saturated by water, water saturated by air
DO Electrode Type Polarographic
Temperature Range (0 ~ 100)°C
Temperature Resolution 0.1°C
Temperature Accuracy 5 ~ 60°C: ±0.4°C; Others: ±0.8°C
Data Storage 200 sets
Power AA batteries (1.5V × 2)
Ambient Temp. 5 ~ 35°C
Ambient Humidity ≤85%
IP Grade IP57 (Dustproof and Waterproof)
Dimensions / N.W. 65 × 120 × 31 mm / 180 g
Shipping Size / G.W. 460 × 300 × 55 mm / 1 kg
Standard Accessories Cond. electrode (K=1), DO electrode, Temperature probe, DO filling solution, Manual