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PRELIMINARY EXAMINATION
Remove the instrument from the packing
material and examine it carefully to make
sure that no damage has occurred during
shipment. If noticeable damage is found,
immediately notify your Dealer.
Each pH/mV simulator is supplied complete
with:
• HI 7858/1 BNC/BNC Coaxial Cable;
Note: Save all packing material until the in-
strument has been observed to func-
tion correctly because all defective
items must be returned to the Dealer
in their original packing.
GENERAL DESCRIPTION
HI 8427 and HI 931001 are portable pH/mV
simulators designed specifically for calibrat-
ing pH and mV (ORP) meters. Two calibra-
tion ranges are provided:
from 0 to 14 pH and from -1900 to 1900 mV
with HI 8427;
from 0 to 14 pH and from -1000 to 1000 mV
with HI 931001.
HI 931001 provides with pH/mV values at
25°C.
HI 8427 allows the manual temperature com-
pensation and is equipped with a HIGH IM-
PEDANCE key and LEAKAGE LED to verify
if the connection cable is in perfect condi-
tion.
A low battery indicator will be lit when the
simulator battery runs low.
Dear Customer,
Thank you for choosing a Hanna Instruments
Product.
Please read this instruction manual carefully
before using the instrument.
This manual will provide you with all the neces-
sary information for the correct use of the
instrument, as well as a more precise idea of
its versatility in a wide range of applications.
These instruments are in compliance with the
directives EN 50081-1 and EN 50082-1.
Preliminary Examination ........................... 3
General Description .................................. 3
Functional Description HI 8427 ................. 4
Functional Description HI 931001 ............. 5
pH Calibration ........................................... 6
mV (ORP) Calibration ............................... 8
High Impedance Calibration .................... 10
pH Values at Various Temperature .......... 11
Battery Replacement ............................... 12
Accessories ............................................. 13
Warranty .................................................. 14
CE Declaration of Conformity ................. 15
TABLE OF CONTENTS
ISO 9000 Certified
Company since 1992
