Innovative Technologies

Benchtop pH/Conductivity/DO Meter (QXM-PD547)

Benchtop pH/Conductivity/DO Meter (QXM-PD547)

Measurement range: (-1.999~19.999)pH Resolution: 0.1/0.01/0.001 pH Accuracy: Electrode: ±0.002 pH, Meter: ±0.01 pH
Features
  • 6.5-inch LCD screen with concise and user-friendly interface.

  • Built-in microprocessor chip with intelligent functions such as automatic calibration, ATC, data storage, clock display, USB output, function settings, wireless printing, and self-diagnosis information.

  • Auto recognition of 25 buffers (Europe & USA, NIST, China).

  • Auto recognition of 8 conductivity standard solutions with options: Europe & USA, and China.

  • Polarographic DO electrode with short polarization time (3–5 minutes).

  • Wireless Bluetooth printing and real-time data transfer to mobile phone (optional).

  • Can store 1000 sets of test data, which can be saved and transferred to USB and opened in Excel.

Technical Specification

Specifications

pH

Parameter Specification
Measuring Range (-2.00 ~ 19.99) pH
Resolution 0.1 / 0.01 pH
Accuracy Meter: ±0.01 pH, Complete Kit: ±0.02 pH
Auto Calibration 1, 2, 3 point
Buffer Options Europe & USA, NIST, China standards
Input Current ≤2×10⁻¹² A
Input Impedance ≥1×10¹² Ω
Stability ±0.02 pH/3h
Temp. Compensation (0 ~ 100)℃, Auto or Manual

mV ORP

Parameter Specification
Measuring Range ±1999.9 mV
Resolution 0.1 mV
Accuracy ±0.03% FS

Conductivity

Parameter Specification
Measuring Range 0.00 ~ 2000 μS/cm; 2.00 ~ 2000 mS/cm (K=10)
TDS (0 ~ 100) g/L
Salinity (0 ~ 100) ppt
Resistivity (0 ~ 100) MΩ·cm
Resolution 0.01/0.1/1 μS/cm; 0.01/0.1/1 mS/cm
Accuracy Electrode: ±0.5% FS, Meter: ±0.8% FS
Temp. Compensation (0 ~ 50)℃, auto
Electrode Constant 0.1 / 1 / 10 cm⁻¹
Reference Temperature 25℃, 20℃, 18℃

Dissolved Oxygen (DO)

Parameter Specification
Measuring Range (0–20.00) mg/L (ppm), (0–200.0)%
Resolution 0.1 / 0.01 mg/L (ppm), 1 / 0.1 %
Accuracy Electrode: ±0.10 mg/L, Meter: ±0.40 mg/L
Response Time ≤30 s (25℃, 90% response)
Residual Current ≤0.1 mg/L
Temp. Compensation (0 ~ 45)℃, auto
Salinity Compensation (0 ~ 45) ppt, auto
Pressure Compensation (80 ~ 105) kPa, auto
Auto Calibration Air saturated by water / water saturated by air
Electrode Type Polarographic

Temperature

Parameter Specification
Measuring Range (0 ~ 100)℃
Resolution 0.1℃
Accuracy 5 ~ 60℃: ±0.4℃; Others: ±0.8℃

🧾 Other Details

Category Specification
Display 6.5-inch LCD screen
Data Storage 1000 sets
Power 12V / 1A
Output USB
Ambient Temperature 5 ~ 35℃
Ambient Humidity ≤85%
IP Grade IP54
Dimensions / N.W. 215 × 170 × 37 mm / 600 g
Shipping Size / G.W. 470 × 430 × 72 mm / 3 kg

📦 Standard Accessories

  • pH electrode

  • Conductivity electrode (K=1)

  • DO electrode

  • Temperature probe

  • pH buffer solution

  • DO filling solution

  • Power adapter

  • Manual