Instructions

HD208 - 12 - V1.4
8 TECHNICAL SPECIFICATIONS
Relative Humidity
Sensor Capacitive
Measuring range 0…100 %RH
Resolution 0.1%RH
Accuracy
± 1.5 %RH (0…85 %RH) / ± 2.5 %RH (85…100 %RH) @
T=15…35 °C
± (2 + 1.5% measure)% @ T=remaining range
Sensor operating
temperature
-40…+80 °C standard / -40…+150 °C with the probe
HP3517E2… for high temperature
Response time T
90
< 20 s (air speed 2 m/s, without filter)
Temperature drift ±2% over the whole operating temperature range
Stability 1% / year
Temperature
Sensor
Pt100, Pt1000 or NTC10kΩ @ 25 °C depending on the model
Measuring range
NTC10kΩ: -40…+105 °C
Pt100/Pt1000: -50…+300 °C
The measuring range can be limited by the operating tem-
perature of the probe used and, in the case of internal sensor
or external fixed probe, by the maximum operating tempera-
ture of the instrument (+75 °C).
Resolution 0.1 °C
Accuracy
NTC10kΩ: ± 0.3 °C in the range 0…+70 °C / ± 0.4 °C outside
Pt100/Pt1000: class A, ± (0,15 + 0,002|t|) °C
Long term stability 0.1 °C / year
Unit of measurement °C or °F
Logging interval 1, 2, 5, 10, 15, 30 s / 1, 2, 5, 10, 15, 30, 60 min
Storable quantities
According to the model:
• Temperature: internal sensor, fixed external probe or ex-
ternal sensor with cable; Mean Kinetic Temperature (MKT)
calculated; the models with two temperature channels (in-
ternal sensor and external probe with cable) store both
temperatures.
• Relative Humidity.
• Dew Point.
• Battery Voltage.
Memory
Flash memory with circular management or stop logging
when full. The PDF report is generated with the data stored
in the Flash memory and the maximum number of samples
(Ns) is:
)Ng75.01(
600,921
Ns
×+
=
With Ng = number of stored quantities.
Example:
> 526,000 with one quantity stored (Ng=1)
> 147,000 with seven quantities stored (Ng=7)
The maximum number of samples in the CSV files is instead
limited only by the capacity of the 4 GB SD memory.
Alarms
Two alarm thresholds (configurable) for each measured quan-
tity