Delta OHM DO2003, Manual

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KEYBOARD DESCRIPTION
Introduction
The DO2003 keyboard has 22 indication LEDs and 12 keys. The keys provide a main function
indicated on the key itself, as well as one or two secondary functions indicated just over or under
the key. The main function is active when the instrument is in measurement mode, while the
secondary functions are activated when the DO2003 is in the programs. For example, the
key activates the function of start and stop logging when in measurement mode, while,
in the programs, it starts the Dump Log function or increases the value of the current parameter.
The display provides alphanumeric indications: the values of the measurements detected by the
inputs and the description of a current function. As each display line has got three characters
available, some words are divided between the two lines: for example, the caption PRESSU is
divided into PRE on the upper line and SSU on the lower one, the word SPEED is displayed as SPE
on the first line and ED on the second one, TEMP appears as TE on the upper line and MP on the
lower one,…
The following table shows the characters as they appear on display:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A C
E
F h I
- -
L o P
-
S U
- - - -
LED Description
The LEDs (red luminous points: Light Emitting Diodes), at the upper side of the keyboard, provide
indications about the units of measurement and the displayed type of measurement. They are
divided into three groups: the one on a pink background relates to input A and to the display upper
line, the one on a light blue background refers to input B and to the display lower line. The two °C
and °F LEDs indicate the unit of measurement of temperature, valid for both channels.
Channel A LEDs (they refer to the indication of the display upper line)
m/s
Air speed measurement through a hot wire probe, a vane probe or a Pitot tube.
Ft/min
km/h
mph
l/sec
Flow measurement through a hot wire probe, a vane probe or a Pitot tube. cfm
m
3
/h
Temp
Temperature provided by the RH/temperature probe connected to input A. The unit of
measurement is provided either by the °C or by the °F LED.
mbar
Pressure measurement through a barometric probe, a differential gauge or a Pitot tube.
Pa
mmH
2
O
InchW