5
4
FUNCTIONAL DESCRIPTION
1) Power adapter plug
2) Connector for the
HI 504910
interface cable (
HI 7920
)
3) Electrode Connector
4) Liquid Crystal Display (LCD)
5)
ON/OFF
key, to turn the meter on and off
6)
ALT
key, to alternate key function
7)
DISPLAY / CAL DATA
key, to select measurement ranges, to
display time and date, and to view calibration data (with ALT)
8)
CFM
key, to confirm values
9)
CALT
key, to move down or calibrate temperature (with ALT)
10)
CAL
key, to move right or calibrate pH (with ALT)
11)
SETUP
key, to move up or enter setup mode (with ALT)
12)
TXCAL
key, to calibrate the
HI 504910
Digital Transmitter
through a password protection method.
The Battery Error Preventing System (BEPS) detects when the batter-
ies level becomes weak.
When the batteries are getting low, a clear indication is displayed on
LCD to warn the user of this condition. However, the meter continues
to measure correctly even when the low battery indication is dis-
played. The meter automatically switches itself off when the batteries
are too weak to support proper function.
For long term field and lab applications, this meter can be connected to
a 12 VDC adapter.
The meter allows the user to enter an ID code to uniquely identify the
instrument.
Made of lightweight ABS material, the water-resistant rugged casing
is built to last.
The meter is in compliance with IP67 standards: dust-tight, protected
against the effects of temporary immersion in water and designed to
provide laboratory results and accuracy under harsh industrial condi-
tions.