Hach CL17 Instrument Manual page 43

Chlorine analyzer
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2.7.5.1 Calibration on Known Standards
CAUTION
To familiarize yourself with
handling precautions, dangers
and emergency procedures,
always review the Material Safety
Data Sheets prior to handling
containers, reservoirs, and
delivery systems that contain
chemical reagents and standards.
Protective eye wear is always
recommended when contact with
chemicals is possible.
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PRUDENCE
Pour se familiariser avec les précautions à prendre lors de la manipulation, les
dangers et les procédures d'urgence, toujours lire les Fiches de Données de
Sécurité des Produits avant de manipuler les récipients, les réservoirs et les
systèmes de distribution contenant les réactifs chimiques et les solutions
étalons. Il est toujours recommandé de porter des lunettes de protection
lorsqu'un contact avec les produits chimiques est possible.
CUIDADO
Para familiarizarse con las precauciones de manipulación, los peligros y los
procedimientos de emergencia, siempre estudie las Hojas de Datos de
Seguridad de los Materiales antes de manipular recipientes, depósitos y
sistemas de entrega que contengan reactivos y patrones químicos. Siempre se
recomienda el uso de protectores oculares cuando sea posible el contacto con
productos químicos.
VORISCHT
Es wird dringend empfohlen, die Sicherheitsdatenblätter vor der Handhabung
von Behältern, Tanks und Zufuhrsystemen, die chemische Reagenzien und
Standardsubstanzen enthalten, aufmerksam durchzulesen, damit Sie sich mit
den beim Umgang mit diesen Chemikalien notwendigen Vorsichtsmaßnahmen,
Risiken und Notfallschutzmaßnahmen vertraut machen, Es wird empfohlen, in
allen Situationen, in denen mit einem Kontakt mit Chemikalien zu rechnen ist,
eine Schutzbrille zu tragen.
CUIDADO
Para familiarizar-se com as precauções de manipulação, riscos e procedimentos
de emergência, examine sempre o Folheto de Dados de Segurança antes de
manipular os recipientes, tanques e sistemas de distribuição que contenham
reagentes químicos e outros elementos padronizados. Se recomenda sempre o
uso de protetores para olhos, quando possa acontecer contato com os produtos
químicos.
This procedure provides the best over all accuracy by establishing the
zero mg/L reference and the span setting. Perform the calibration as follows:
1. Prepare a zero chlorine reference solution by adding approximately 4 mL
of Ferrous Ammonium Sulfate, Cat. No. 1811-33, to approximately 2 liters
of the normal sample or chlorine-free demineralized water.
Note: Enter the zero value before the chlorine standard value.
2. Place a container of zero reference water above the analyzer with at
least two feet of head. Plumb the system to enable the sample flow to be
shut off so the zero reference water can enter the analyzer in its place.
Allow the analyzer to run on zero reference water for approximately
10 minutes.
3. When the readings are stable, set the zero reference.
a. Enter the
menu.
SETUP
b. Press the
DOWN ARROW
c. Press
to display the current measured value.
ENTER
d. Press
again to force the value to zero.
ENTER
key until
is displayed.
CAL ZERO
Instrument Menu Structure
Section 2
Page 41

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