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Multi-Unit Turbidity Measurement with USB Data Transfer
Keywords: Target keywords, AMT27 portable turbidity meter, portable turbidity meter, ISO 7027 turbidity meter, NTU FNU turbidity meter, water turbidity meter
The AMT27 portable turbidity meter measures liquid clarity using the ISO 7027 nephelometric method at 90°. It offers NTU/FNU, EBC, and ASBC measurement scales, two measurement modes, and multi-point calibration with Formazin standards. Its compact body, carrying case, on-board data memory, and USB output make it suitable for routine laboratory, field, water, and beverage testing.
1. Portable design supplied with a standard carrying case.
2. 2- to 5-point calibration using Formazin standards, with user-defined standards also available.
3. Selectable NTU, FNU, EBC, and ASBC turbidity units.
4. Single-measurement mode automatically identifies and holds a stable reading.
5. Continuous mode supports sample-vial indexing and matching.
6. Manual or automatic power-off; automatic shutoff after 15 minutes.
7. On-board memory stores and recalls up to 100 readings.
8. USB communication transfers stored readings to a computer.
9. Multiple power options are described, including battery, power adapter, and USB power.
Carrying case and packed contents | 
Control keypad and function buttons | 
Four calibration standards and two empty sample vials |
| Parameter | Specification |
|---|---|
| Measurement method | ISO 7027 nephelometric method, 90° |
| Range | 0 to 1100 NTU/FNU; 0 to 275 EBC; 0 to 9999 ASBC |
| Resolution | 0.01 (0 to 100 NTU); 0.1 (100 to 999 NTU); 1 (999 to 1100 NTU) |
| Accuracy | ±2% (0 to 500 NTU); ±3% (501 to 1100 NTU) |
| Calibration standards | 0.02, 10, 200, 500, and 1000 NTU, or user-defined |
| Light source | Infrared-emitting diode, 850 nm |
| Detector | Silicon photodiode |
| Stray light | < 0.02 NTU |
| Sample vial size | 60 mm high × 25 mm diameter |
| Parameter | Specification |
|---|---|
| Display | LCD, 60 × 40 mm |
| Power-off modes | Manual or automatic; automatic after 15 minutes |
| Memory | Up to 100 data sets |
| Output | USB communication interface |
| Operating temperature | 0 to 60°C (32 to 140°F) |
| Power requirements | 1 × 9 V battery |
| Dimensions | 180 × 85 × 70 mm (L × W × H) |
| Weight | 300 g |
1. Use the AMT27 for turbidity checks in water treatment, environmental monitoring, laboratory testing, and beverage production. The selectable EBC and ASBC scales support applications that use brewing-related turbidity units.