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| Brand | SM |
|---|---|
| Origin | Germany |
| Model | LF40 |
| Portability | Portable |
| Application Environment | Laboratory & Field |
| Conductivity Range | 0–200 mS/cm (auto-ranging across 0–200 μS/cm, 0–2000 μS/cm, 0–20 mS/cm, 0–500 mS/cm) |
| TDS Ranges | 0–200 mg/L, 0–2000 mg/L, 0–20 g/L, 0–500 g/L |
| Salinity Range | 0–70 g/kg |
| Temperature Range | −10 to +100 °C |
| Resolution | 0.1 μS/cm (low range), 0.01 mS/cm / 0.1 mS/cm (mid/high ranges), 0.1 °C |
| Temperature Compensation | Pt1000 sensor (automatic or fixed) |
| Display | 128 × 64 pixel backlit LCD |
| Data Storage | 4000 measurement records |
| Connectivity | Isolated USB interface |
| Enclosure Rating | IP65 |
| Dimensions | 200 × 95 × 40 mm (W × H × D) |
| Weight | 290 g (with 3 × AA batteries) |
| EMC Compliance | EN 61326 Class B |
| Standard Electrode | LTC 0.35/LF 40 (4-pole, cell constant 0.33 cm⁻¹, integrated Pt1000 temperature sensor, 1 m cable with BK 6-pin connector) |
| Included Accessories | Carrying case, LF40 main unit, 3 × AA batteries, LTC 0.35/LF 40 electrode, 50 mL KCl 1413 μS/cm calibration solution |
| Brand | SM |
|---|---|
| Origin | Germany |
| Model | TM39 |
| Measurement Ranges | pH 0–14, mV −1999 to +1999, Temperature −70 to +250 °C |
| Resolution | 0.01 pH, 1 mV, 0.1 °C |
| Temperature Compensation | Automatic (Pt100) or Manual |
| Calibration | Auto 2-/3-point pH calibration |
| Display | LCD, 2-line × 4-digit |
| Power | 9 V battery (IEC 6F22) |
| Interface | RS-232 (TM39-D variant) |
| Operating Environment | 0–50 °C |
| Dimensions (H×W×D) | 142 × 71 × 26 mm |
| Weight | ~145 g |
| Electrode Connection | BNC (pH/ORP), Mini-DIN (temperature) |
| Compatible Electrode | EGA142/TM39 (pH/Temp composite, Ø12 mm, 120 mm immersion, Pt1000 sensor, Ag/AgCl reference, 3 mol/L KCl gel electrolyte, max. 6 bar) |