Delta OHM HD33MT.4 - Data Logger For Weather Station, 4 G

Power supply If the rechargeable battery is used: 18…30 Vdc
If the rechargeable battery is not used:
7…30 Vdc without ETHERNET module
12…30 Vdc with ETHERNET module
Power consumption @ 12 Vdc < 3 mA without ETHERNET module and with no GSM/3G activity
∼ 200 mA with ETHERNET module and with no GSM/3G activity
< 1 A peak during GSM/3G activity
Battery Optional internal lead 12 V / 3.4 Ah. Maximum charge current 1 A.
The autonomy depends on the number and type of sensors connected.
Switched power supply
output
If the data logger is powered by a solar panel (+Vpanel input), the output is
equal to the voltage of the internal lead battery (nominal 12 V).
If the data logger is powered by the +Vdc input, the output is equal to the
voltage of the +Vdc input.
The output is active only when the external sensors have to be powered.
Antenna External
Measuring interval 1, 2, 5, 10, 15, 30 s / 1, 2, 5, 10, 15, 30, 60 min
Logging interval 1, 2, 5, 10, 15, 30 s / 1, 2, 5, 10, 15, 30, 60 min
Internal memory Circular management or stop logging if memory is full. Number of samples:
from 242,850 to 858,070 depending on the number of detected quantities.
Alarm Sending of alarm e-mail and SMS.
Two voltage-free normally open (NO) contact alarm outputs. Max 300 mA
@ 30 Vdc resistive charge.
Display Optional custom LCD
LED indicator 2-color LED: power on (blinks red), GSM/3G activity (blinks green)
Connection to PC USB port with mini-USB connector
ETHERNET connection RJ45 connector (only if the optional ETHERNET module is present)
Internal clock drift ± 2 ppm (0…+40 °C) / ± 5 ppm (-40…+70 °C)
Operating conditions -40…+70 °C / 0…100 %RH for the version without LCD
-20…+70 °C / 0…100 %RH for the version with LCD
Weight 1 kg approx.
Housing Dimensions: 270 x 170 x 110 mm (excluding external antenna)
Material: Polycarbonate (PC)
Protection degree: IP 65 (with protective cap on the USB connector)
Installation Fixing to a 40 mm diameter mast.
Measurement characteristics:
Temperature (instrument in line with the probe HP3517WTC… or TP350NTC…)
Sensor NTC 10 kΩ @ 25 °C
Measuring range -40…+105 °C
Resolution (of instrument) 0.1°C
Accuracy ± 0.3°C in the range 0…+70°C / ± 0.4°C outside
Stability 0.1 °C / year
Relative Humidity (instrument in line with the probe HP3517WTC …)
Sensor Capacitive
Measuring range 0…100 %RH
Resolution (of instrument) 0.1 %
Accuracy ± 1.8%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
Response time T90 < 20 s (air speed = 2 m/s, without filter)
Temperature drift ±2% over the whole operation temperature range
Stability 1% / year