VIKING-EC250 Laboratory Conductivity Meter (Touch Screen, 0.5 Grade)
The VIKING-EC250 is a professional, touch-driven laboratory conductivity meter designed for routine and advanced water analysis.
It measures Conductivity, Resistivity, TDS, Salinity, Temperature, and supports purity monitoring of ultra-pure water as well as “conductivity ash” evaluation.
A 5.0″ color touch screen, 0.5 grade accuracy, and a standard 4-ring electrode ensure stable results across ultra-low to hypersaline samples.
Key Features
- 5.0″ color touch screen for fast, intuitive operation
- 0.5 grade accuracy (better than common 1.0 grade meters)
- 4-ring conductivity electrode minimizes polarization in high salinity
- 10 built-in international standard solutions; custom standards supported
- 3 temperature compensation modes (Linear / Non-linear / Off)
- 3 endpoint modes (Auto / Manual / Time)
- GLP database: 1000 results, auditable and traceable
- USB & RS232 output; optional printer
Measurement Modes
Conductivity · Resistivity · TDS · Salinity · Temperature
Ranges
| Parameter | Range |
|---|---|
| Conductivity | 0.000 µS/cm – 3000 mS/cm |
| Resistivity | 0.000 Ω·cm – 105.0 MΩ·cm |
| TDS | 0.000 mg/L – 3000 g/L |
| Salinity | 0.000 – 87.0 psu (≈ 0.00 – 15.00%) |
| Temperature | −30.0 – 135.0 °C (ATC/MTC) |
Resolution
- Conductivity: Auto 0.001 to 1 (ranges include 0.000–1999 µS/cm; 20.0 mS/cm–3000 mS/cm)
- Resistivity / TDS / Salinity: Auto 0.001 to 1.0
- Temperature: 0.1 °C
Accuracy
- Conductivity: ±0.5% of reading across all ranges (better than ±0.5% F.S.)
- Temperature: ±0.1 °C
Calibration & Compensation
- One-point calibration; 10 built-in standards; user-defined solutions supported
- Enter known cell constant for electrode calibration
- Temperature compensation: Linear (0.0–0.1/°C), Non-linear, or Off
- Reference temperature: 20 °C or 25 °C
- Endpoint modes: Auto / Manual / Time (selectable)
Data & Connectivity
- Database: 1000 measurements, GLP-compliant (auditable/traceable)
- Interfaces: USB & RS232 (optional printer)
- Input (built-in temp): Mini-DIN (Cinch, NTC 30 kΩ)
Power & Construction
- Power: 110–220 V AC 50/60 Hz; 9–12 V DC
- Housing dimensions: 250 × 165 × 65 mm
- Display: 5.0″ color touch screen
Included / Standard Solutions
Preset standards: 146.5 µS/cm, 1408 µS/cm, 12.85 mS/cm, 111.3 mS/cm (additional values customizable).
Notes: “Conductivity ash” mode available for applications requiring conductivity-based ash determination. A standard 4-ring electrode is recommended for high-conductivity samples.
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Comparison (Summary)
| Parameter | VIKING-EC250 / HZPD-T503 | HZPD-T503F | Note |
|---|---|---|---|
| Device Type | Laboratory conductivity meter | Laboratory conductivity meter | Same |
| Display | 5.0″ color touch screen | 5.0″ color touch screen | Same |
| Accuracy Grade | 0.5 | 0.5 | Same |
| Measurement Modes | Conductivity, Resistivity, TDS, Salinity, Temperature | Conductivity, Resistivity, TDS, Salinity, Temperature, Ash | T503F adds ASH |
| Ranges (Cond/Res/TDS/Sal/Temp) | 0.000 µS/cm – 3000 mS/cm; 0.000 Ω·cm – 105.0 MΩ·cm; 0.000 mg/L – 3000 g/L; 0.000 – 87.0 psu; −30.0 – 135.0 °C (ATC/MTC) |
Same as left | Same |
| Ash Range | — | 0.000 – 2022 %*; Res: Auto 0.001–1; Acc: ±0.5% | Only T503F |
| Temperature Compensation | Linear, Non-linear, Off | Linear, Non-linear, Off, Pure-water | T503F adds Pure-water |
| Calibration | One-point; 10 built-in standards; user-defined; cell constant input | Same | Same |
| GLP Database | 1000 measurements | 2000 measurements | T503F larger memory |
| I/O | Mini-DIN (NTC 30 kΩ); USB & RS232; optional printer | Same | Same |
| Power / Size | 110–220 V AC; 9–12 V DC; 250 × 165 × 65 mm | Same | Same |
| Standard Solutions | 146.5 µS/cm; 1408 µS/cm; 12.85 mS/cm; 111.3 mS/cm | Same | Same |
What’s Different? (Delta)
| Category | VIKING-EC240 SKU:PRO5360 | VIKING-EC250 SKU:PRO5361 | Comment |
|---|---|---|---|
| Measurement Modes | No Ash | Includes Ash + built-in sugar-industry method | Choose T503F if you need conductivity-based ash. |
| GLP Database | 1000 records | 2000 records | Double capacity. |
| Temp. Compensation | Linear / Non-linear / Off | + Pure-water | Handy for ultra-pure water workflows. |
| Ash Specs | — | Range: 0.000 – 2022 %*; Res: Auto 0.001–1; Acc: ±0.5% | Likely a typo—practically ash % ≤ 100 %. |
*“0.000 – 2022 %” appears to be a typographical error in the source material (realistic ranges are typically ≤ 100 %). If you have the official manual/datasheet, we recommend confirming the exact Ash range.
Conclusion & Recommendation
- VIKING-EC240 / — Best choice if you do not need Ash determination. Same core performance, 1000-record GLP database, lower cost likely.
- VIKING-EC250 — Choose this if you need Ash (e.g., sugar industry conductivity-ash), work with ultra-pure water (extra “Pure-water” compensation), or want a larger 2000-record GLP database.
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