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Idiomas disponibles
Idiomas disponibles
HD2001 - HD2001.1 - HD2001.2 - HD2001.3
Temperature, humidity, pressure and wind speed indicators with
digital or analog output.
The devices of the HD2001 series..., according to the models, measure tem-
perature, relative humidity, barometric pressure and, for the model HD2001.2, wind
speed by using hot-wire probes. All the models are provided with RS232C or RS485
serial output and the management of more than one device connected to a network.
In addition, all the models are fitted with an open collector type low-activated con-
figurable alarm output.
The HD2001.1 and HD2001.3 model have three configurable analog outputs:
4...20mA or 0...20mA current output, or 0...10Vdc or 2...10Vdc voltage output. The
choice of output type is made by means of the jumpers set on the board.
Wind speed measurement is detected by the HD2001.2 model with a hot-wire probe
set on the higher part of the instrument.
The large display with dual indication on all models allows one of the process vari-
ables on the first line and the temperature on the second line, to be displayed.
Tables 1 and 4 show the main characteristics of the three models.
Input
Temperature
Model
% RH
Pressure
Pressure
HD2001
*
*
HD2001.1
*
*
HD2001.2
*
*
HD2001.3
*
---
Table 1
Display description
1
2
CAL
3
MAX
4
RS
232
5
The display constantly shows the measurements of two values. While in the first
line the value can be selected through the MEAS button, the second line
below always shows the temperature. During measurement, the first line dis-
plays the unit of measurement of the main variable; inside the menu it provides
information about the active item.
On the right-hand side of the display there are four symbols:
The two arrows and are lit when the pressure measured by the baromet-
•
ric sensor differs at least 1 mbar from that measured 6 hours previously;
The framed arrow indicates the pressure drop alarm and is lit when a pres-
•
sure drop occurred during the previous 6 hours which was higher than or equal
to the BAR DROP value, which can be set in the menu within the range 1...9
mbar;
The bell symbol is lit when any of the alarms is exceeded (see paragraph
•
"Programming the alarms").
Symbols
CAL turns on during calibration of the RH sensor (see the paragraph on
•
calibration).
MAX MIN AVG indicate that the main measurement reached the maxi-
•
mum (MAX), minimum (MIN) or average (AVG) value since last reset (see the
function of the NORM/MATH button).
RS232 is turned on when the instrument is connected to a PC.
•
Output
Air
RS232-RS485
Analog outputs
speed
Open collector
0...20mA, 4...20mA,
output
0...10Vdc, 2...10Vdc
---
*
---
---
*
*
*
*
---
---
*
*
6
7
8
MIN AVG
9
�C
10
Keyboard description
MEAS
MENU
ENTER
MEAS By repeatedly pressing this button the main variable displayed in the first line
of the display can be selected. This function is cyclic: %RH >> Barometric Pres-
sure >> Wind speed (for the HD2001.2 model) >> %RH...
The temperature measured is always visible in the second line of the display.
UNIT This button selects the unit of measurement or the secondary variable cor-
related to the main variable displayed in the first line of the display.
Humidity: %RH (relative humidity %) >> g/m
(mixing ratio) >> Tdew (Dew Point temperature in °C or °F).
Pressure: hPa >> kPa >> mbar.
Wind speed: m/s >> ft/min.
NORM/MATH This tool provides the chance to display the maximum (MAX), average
(AVG) and minimum (MIN) value for all calculated variables from the moment
the MATH button is pressed. This function memorizes the values of the previous
measuring session and treats them as initial values for the new calculations.
Press the CLEAR/ESC button to reset the memory.
CLR/ESC It resets the initial values during measurement of the maximum, average,
minimum value. Within the menu, it allows the current function to be exited with-
out the changes being saved.
ENTER Within the menu confirms the current selection and returns to the measure-
ment.To confirm a parameter without exiting the menu, all that needs to be done
is to display it and continue using the MENU button.
UP Within the menu, it increases the current value.
DOWN Within the menu, it decreases the current value.
MENU Using this button the instrument's menu can be accessed: the single items
are described in the upper part of the display by flowing text. To modify an
individual item, use the arrows; to confirm it and remain in the menu, press
the MENU button; to confirm it and return to measurement, press the ENTER
button.
NOTE: to help clarity, in the following explanation the terms appearing on the
display are indicated by capital letters in bold (e.g. TEMP indicates the tem-
perature, CEN means Centigrade).
HD2001.1: Temperature, humidity, pressure, serial and analog output.
5
NORM
CLR
UNIT
MATH
ESC
(absolute humidity) >> g/kg
3
HD2001
Transmitter
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