Hanna Instruments HI 95715 - Manual (Page 4)

4
The HI 95715 is an auto diagnostic portable microprocessor meter that benefits from Hanna’s
years of experience as a manufacturer of analytical instruments. It has the advanced optical
system based on a LED light source and a narrow band interference filter that allows most
accurate and repeatable readings. All instruments are factory calibrated and the electronic and
optical design minimizes the need of frequent calibration.
With the powerful CAL CHECK validation function you are able to validate good performance of
your instrument at any time. The validation procedure is extremely user friendly. Just use the
exclusive Hanna ready-made, NIST traceable standards to verify the performance of the
instrument and recalibrate if necessary.
All instruments are splash proof and the LED (Light Emitting Diode) and filter units are protected
from dust or dirt by a transparent cup. This makes the instruments fulfill field applications.
Display codes aid the user in routine operation. The meter has an auto-shut off feature that will
turn off the instrument after 10 minutes of non use or after 1 hour if left in the calibration mode.
The meter uses an exclusive positive-locking system to ensure that the cuvet is in the same
position every time it is placed into the measurement cell. It is designed to fit a cuvet with a larger
neck making it easier to add both sample and reagents. The cuvet is made from special optical
glass to obtain best results.
The HI 95715 meter measures the ammonia nitrogen (NH
3
-N) content in water samples in the
0.00 to 9.99 mg/L (ppm) range. The method is an adaptation from ASTM Manual of Water and
Environmental Technology, D1426-93
, Nessler Method.
The reagents are in liquid form and are supplied in bottles. The amount of reagent is precisely
dosed to ensure the maximum repeatability.
GENERAL DESCRIPTION
ABBREVIATIONS
American Society for Testing and Materials
degree Celsius
degree Fahrenheit
Liquid Crystal Display
Light Emitting Diode
milligrams per liter. mg/L is equivalent to ppm (part per million)
milliliter ASTM:
°C:
°F:
LCD:
LED:
mg/L:
mL: