This manual provides you with the necessary information for the correct use of the instrument. Please read it carefully before using the meter.
The HI 95707 is an auto-diagnostic portable microprocessor meter designed to measure Nitrogen-Nitrite (NO2--N) content in drinking, surface, saline water, and domestic or industrial wastes. The instrument features an advanced optical system with a tungsten lamp and narrow band interference filter for accurate readings. It includes a CAL CHECK validation function using NIST traceable standards to verify performance at any time.
The meter operates by measuring the pink tint caused by the reaction between nitrite and powder reagents supplied in packets. Users can perform preliminary examinations, calibration procedures, and battery replacements as detailed in this guide. The device is splash-proof and includes an auto-shut-off feature.
| Range | 0.000 to 0.600 mg/L (as NO2--N) |
|---|---|
| Resolution | 0.001 mg/L |
| Precision | + 0.001 mg/L @ 0.100 mg/L |
| Light Source | Tungsten lamp with narrow band interference filter @ 525 nm |
| Light Detector | Silicon Photocell |
| Method | Adaptation of an EPA approved method |
| Environment Temperature | 0 to 50°C (32 to 122°F) |
| Battery Type | 1x9 volt |
The instrument measures Nitrogen-Nitrite content in the range of 0.000 to 0.600 mg/L.
Enter calibration mode by holding CAL CHECK for three seconds, then hold ZERO for 10 seconds until 'F.CAL' and '707' appear.
The instrument uses a single 9V battery.