This document is the instruction manual for HI 93740 Nickel Low Range ISM instrument, which describes the design, construction, and appearance features of the instrument. It is warranted for two years and covers free repair or replacement. Damages due to accidents, misuse, tampering, or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. If the repair is not covered by the warranty, you will be notified of the charges. To validate the warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase.
The HI 93740 is a portable instrument designed to measure nickel concentrations in the range of 0.000 to 1.000 mg/L (ppm). It utilizes an exclusive positive-locking system for cuvet placement and employs the PAN method, where the reaction between nickel and reagents creates an orange tint detected by a silicon photocell.
The document details the measurement procedure involving specific reagents (phthalate-phosphate, PAN indicator, and EDTA) added to samples in graduated beakers. It also covers operational tips for accurate readings, interference factors from various ions, battery replacement instructions, and troubleshooting display codes.
| Range | 0.000 to 1.000 mg/L |
|---|---|
| Resolution | 0.001 mg/L |
| Accuracy | + 0.01 mg/L + 7% of reading |
| Light Source | LED @ 555 nm |
| Battery Life | 40 hours |
The meter measures nickel content in the 0.000 to 1.000 mg/L (ppm) range.
After adding the PAN solution, you must wait for 15 minutes before proceeding.
The display will show a 'V' indicating low voltage; once dead, the meter locks up until replaced.