Data Sheet

4
MODELS WITH LCD
In models with LCD, MODE and SCROLL buttons allow viewing a variety of information.
With the MODE button (short press) you choose the type of information: measurements,
date and time of the instrument, alarm thresholds, start and stop instants of programmed
logging, delay time for the manual start of logging. With the SCROLL button (short
press) you navigate through the various fields of the type of information selected
(see function diagram shown below). The buttons operation is cyclical.
If you press the SCROLL button when the display shows the last of the quantities
available on the display, the instrument does not return immediately to the first
quantity, but starts to automatically cycle through all the available quantities. Press
SCROLL again to return to the permanent display of the first quantity.
If a parameter is not set, the instrument will display dashes.
Alarm symbols on display
In addition to the alarm LEDs, there are four alarm indications on the display; an arrow
lights up in correspondence of the alarms 1, 2, 3 and 4 if:
% Alarm 1: the temperature is below the lower threshold configured.
% Alarm 2: the temperature is above the upper threshold configured.
% Alarm 3: the relative humidity is below the lower threshold configured.
% Alarm 4: the relative humidity is above the upper threshold configured.
If the model measures two temperatures: external sensor (channel 1) and internal
sensor (channel 2), alarms 1 and 2 refer to the temperature measured by the external
sensor (channel 1).
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 Pt1000 or NTC10k1 @ 25°C depending on the model
Measuring range NTC10kΩ: -40…+105 °C
Pt1000: -50…+300 °C
The measuring range can be limited by the operating
temperature of the probe used and, in the case of internal
sensor or external fixed probe, by the maximum operating
temperature of the instrument (+75 °C).
Resolution 0.1°C
Accuracy NTC10kΩ: ± 0.3 °C in the range 0…+70 °C / ± 0.4 °C
outside
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
external sensor with cable; Mean Kinetic Temperature
(MKT) calculated; the models with two temperature
channels (internal 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:
Ns=
921,600
(1+0.75xNg)
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 quantity
Power supply
3.6 V not rechargeable lithium-thionyl chloride internal
battery (Li-SOCl
2
), size AA, 2-pole Molex 5264 connector.
Battery life
2 years typical, with logging interval 30s
PC connection
USB port with mini-USB connector
Temperature/
humidity of the
instrument
-40…+75 °C / 0…100 %RH non condensing
Material
LURAN
®
S 777K
Dimensions
Case: 70 x 90 x 30 mm
Size of the TV model with fixed probe: 70 x 138 x 30 mm
Prection degree
IP 64
Weight
150 g approx.
Installation
Wall mount
HD208 fixed probe Ø 4.5x25mm
HD208 with internal NTC sensor