User manual HANNA INSTRUMENTS HI 95721

[. . . ] 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. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. This instrument is in compliance with directives. DECLARATION OF CONFORMITY Recommendations for Users Before using these products, make sure that they are entirely suitable for your specific application and for the environment in which they are used. [. . . ] · Press ZERO and "SIP" will blink on the display. SPECIFICATIONS Range Resolution Precision Typical EMC Deviation Light Source Light Detector Method 0. 00 to 5. 00 mg/L 0. 01 mg/L ±0. 01 mg/L @ 1. 50 mg/L ±0. 01 mg/L Tungsten lamp with narrow band interference filter @ 525 nm Silicon Photocell Adaptation of the USEPA method 315B and Standard Method 3500-Fe B. The reaction between iron and the phenanthroline reagent causes an orange tint in the sample. 0 to 50°C (32 to 122°F); max 95% RH non-condensing 1 x 9 volt After 10' of non-use in measurement mode; after 1 hour of non-use in calibration mode. Description Iron HR Reagent Quantity/test 1 packet Environment Battery Type Auto-Shut off or Dimensions Weight REQUIRED REAGENTS Code HI 93721-0 PRECISION AND ACCURACY Precision is how closely repeated measurements agree with each other. Accuracy is defined as the nearness of a test result to the true value. 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-". · 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. 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). 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. 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. It is necessary that the surface of the cuvet is clean and not scratched. This to avoid measurement interference due to unwanted reflection and absorption of light. [. . . ] Light over range: the cuvet is not inserted correctly and an excess ambient light is reaching the detector. If the cover is properly installed, then contact your dealer or the nearest Hanna Customer Service Center. The blinking "BAT" indicates that the battery voltage is getting low and the battery needs to be replaced. "Configuration": this indicates that the meter has lost its configuration. [. . . ]