NOVUS AUTOMATION
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7
CONFIGURATION
The
RHT
Climate
Transmitter
has a set of parameters that allows the configuration of its two transmission outputs and its two alarm outputs and
can assigning the psychrometric properties below to each of them. The properties can be expressed in the International System of Measures (SI) or
in the English System of Measures (US).
SI
US
Psychrometric properties
Min.
Max.
Unit
Min.
Max.
Unit
Temperature (measured value)
t
-40
100
°C
-40
212
°F
Relative humidity (measured value)
rX
0
100
% RH
0
100
% RH
Dew point temperature (calculated value)
Td
-90
100
°C
-130
212
°F
Wet bulb temperature (calculated value)
tW
-40
100
°C
-40
212
°F
Absolute humidity (calculated value)
dv
0
600
g/m³
0
262
gr/ft³
Frost point temperature (calculated value)
Tf
-90
100
°C
-130
212
°F
Specific enthalpy (calculated value)
H
-40
700000
*
kJ/kg
-18
300945
*
BTU/lb
Partial vapor pressure (calculated value)
E
0
1035
mbar
0
15
psi
Mixture ratio (calculated value)
R
0
260000
*
g/kg
0
1820000
*
gr/lb
Temperature and relative humidity are the only variables that are measured directly from the sensor that comes with the device.
All other measurements are obtained via algorithms that can lead to slight variations in relation to the real values.
Table 03
– Psychrometric properties
7.1
ANALOG OUTPUTS
0VT1
/
0VT2
The configuration cycle for analog outputs 1 and 2 allows you to assign:
•
The psychrometric property associated with the output;
•
The default electrical output;
•
The value to be shown in case of error in the sensor reading;
•
The excursion range of the transmitted psychrometric property.
Note
: When the lower limit is defined with a value higher than the higher limit, the output current operates from 20-4 mA to 10-0 V.
7.1.1
Psychrometric property to be transmitted by analog outputs
0vt1
/
0vt2
It allows you to configure the psychrometric property to be transmitted by the analog outputs
0vt1
/
0vt2
.
0vt1
mEAs
0vt2
mEAs
Psychrometric property to be transmitted
Default:
off
Outputs
0vt1
/
0vt2
off
oFF
Temperature
t
Relative humidity
r
k
Dew point temperature
Td
Wet bulb temperature
tW
Absolute humidity
du
Frost point temperature
Tf
Specific enthalpy
H
Partial vapor pressure
E
Mixture ratio
R
Table 04
– Psychrometric property to be transmitted
7.1.2
Operating mode for analog outputs
0vt1
/
0vt2
It allows you to configure the type of electric signal to be used by the analog outputs
0vt1
/
0vt2
.
0vt1
modE
0vt2
modE
Type of signal from analog outputs
0vt1
/
0vt2
Default:
4-20
Analog output 1 operating in mode 4-20 mA
4-20
Analog output 1 operating in mode 0-10 V
0-10
Table 05
– Type of signal from analog outputs
