Lastmanuals offers a socially driven service of sharing, storing and searching manuals related to use of hardware and software : user guide, owner's manual, quick start guide, technical datasheets... DON'T FORGET : ALWAYS READ THE USER GUIDE BEFORE BUYING !!!
If this document matches the user guide, instructions manual or user manual, feature sets, schematics you are looking for, download it now. Lastmanuals provides you a fast and easy access to the user manual HANNA INSTRUMENTS HI 95721. We hope that this HANNA INSTRUMENTS HI 95721 user guide will be useful to you.
Lastmanuals help download the user guide HANNA INSTRUMENTS HI 95721.
Manual abstract: user guide HANNA INSTRUMENTS HI 95721
Detailed instructions for use are in the User's Guide.
[. . . ] Instruction Manual
HI 95721C Iron High Range ISM
MAN95721R2 07/06
w
w
w
.
h
a
n
n
a
i
n
s
t
.
c
o
m
www. hannainst. com
This Instrument is in Compliance with the CE Directives
20
1
Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct use of the instrument. Please read it carefully before using the meter. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. [. . . ] Although good precision suggests good accuracy, precise results can be inaccurate. In a laboratory using a standard solution of 1. 50 mg/L Iron and a representative lot of reagent, an operator obtained with a single instrument a standard deviation of 0. 01 mg/L. 5
· After a few seconds the display will show "-0. 0-". The meter is now zeroed and ready for calibration. · Place the CAL CHECKTM Standard HI 95721-11 Cuvet B into the holder and ensure that the notch on the cap is positioned securely into the groove.
16
PRINCIPLE OF OPERATION
Absorption of light is a typical phenomenon of interaction between electromagnetic radiation and matter. When a light beam crosses a substance, some of the radiation may be absorbed by atoms, molecules or crystal lattices. If the value is found out of specifications, please check that the cuvets are free of fingerprints, oil or dirt and repeat validation. If results are still found out of specifications then recalibrate the instrument.
6
15
· Hold READ/TIMER for three seconds. The display will show the countdown prior to measurement. Alternatively, wait for 3 minutes and just press READ/TIMER. In both cases "SIP" will blink during measurement.
or
· The instrument directly displays concentration in mg/L of iron on the Liquid Crystal Display.
INTERFERENCES · Alkalinity:
above 2, 000 mg/L (as CaCO3). May slow down color development (negative error). To resolve this, neutralize the sample with diluted HCl. does not interfere: reagent contains a masking agent.
2+
A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned and beamed to the sample contained in the cuvet. The optical path is fixed by the diameter of the cuvet. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light beam of intensity Io or I. The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an electric current, producing a potential in the mV range. The microprocessor uses this potential to convert the incoming value into the desired measuring unit and to display it on the LCD. The measurement process is carried out in two phases: first the meter is zeroed and then the actual measurement is performed. The cuvet has a very important role because it is an optical element and thus requires particular attention. It is important that both the measurement and the calibration (zeroing) cuvets are optically identical to provide the same measurement conditions. Whenever possible use the same cuvet for both. [. . . ] Repeat the calibration procedure with the right standard solution, and verify it is not expired. If the calibration procedure fails again, contact your dealer or the nearest Hanna Customer Service Center. ERROR MESSAGES a) on zero reading This indicates that the zeroing procedure failed due to a low signal-tonoise ratio. "No Light": the instrument cannot adjust the light level. [. . . ]
DISCLAIMER TO DOWNLOAD THE USER GUIDE HANNA INSTRUMENTS HI 95721
Lastmanuals offers a socially driven service of sharing, storing and searching manuals related to use of hardware and software : user guide, owner's manual, quick start guide, technical datasheets... In any way can't Lastmanuals be held responsible if the document you are looking for is not available, incomplete, in a different language than yours, or if the model or language do not match the description. Lastmanuals, for instance, does not offer a translation service.
Click on "Download the user manual" at the end of this Contract if you accept its terms, the downloading of the manual HANNA INSTRUMENTS HI 95721 will begin.