Vaisala PTU300 - Measurement Data (Read-Only); Table 42 Measurement Data Registers

USER'S GUIDE____________________________________________________________________
210 _________________________________________________________________ M210796EN-F
When writing 16-bit values in configuration registers, they are always
processed as signed integers in the range of -32768…+32767. You shall
use the floating point registers to write values outside this 16-bit signed
integer range. Maximum writable value is 32767 also for configuration
registers that do not accept negative values.
Measurement Data (Read-Only)
Table 42 Measurement Data Registers
Name Float Integer Unit
RH 0001…0002 0257 (×0.01) %
T 0003…0004 0258 (×0.01) °C
T
a
0005…0005 0259 (×0.01) °C
T
d
0007…0008 0260 (×0.01) °C
T
d/f
0009…0010 0261 (×0.01) °C
a 0015…0016 0264 (×0.01) g/m³
x 0017…0018 0265 (×0.01) g/kg
T
w
0019…0020 0266 (×0.01) °C
H
2
O 0021…0022 0267 (×1) ppm
V
p
w
0023…0024 0268 (×0.1) hPa
p
ws
0025…0026 0269 (×0.1) hPa
H 0027…0028 0270 (×0.01) kJ/kg
ΔT 0031…0032 0272 (×0.01) °C
P 0043…0044 0278 (×0.01) hPa
QNH 0045…0046 0279 (×0.01) hPa
QFE 0047…0048 0280 (×0.01) hPa
HCP 0049…0050 0281 (×0.01) hPa
P
3h
0051…0052 0282 (×0.01) hPa
P
1
0053…0054 0283 (×0.01) hPa
P
2
0055…0056 0284 (×0.01) hPa
H
2
O 0065…0066 0289 (×1) ppm
W
P
3h
WMO tendency code
0067…0068 0290 (×1)
Available measurements depend on the instrument configuration. Values
may be unavailable also in case of device failure; Read status registers or
exception status outputs to check for failures.
NOTE
Only real-time data can be read from the instrument. Data that is
recorded in the transmitter’s memory (internal memory or data logger
module) cannot be read through MODBUS.