GHM Delta OHM HD2013, Operating Manual

Page: 4 / 32

HD2013
- 4 -
V1.6
2 TECHNICAL SPECIFICATIONS
Power supply
basic version ---
with heating 12 or 24 Vdc
±
10% depending on model
with analog output 7…30 Vdc (4…20 mA version) / 13…30 Vdc (0…10 V version)
with SDI-12 output 7…30 Vdc
Consumption
basic version ---
with heating 165 W
with analog output 26 mA max. @ 18 Vdc (4…20 mA version) / ≈ 4 mA @ 18 Vdc (0…10 V version)
with SDI-12 output ≈ 100 µA @ 18 Vdc
Contact output
NC contact (opens during tipping).
With analog or SDI-12 output options, the contact output is alternative to
the analog or SDI-12
output and the rain gauge is factory-configured
with analog or SDI-12 output
.
Analog output 4…20 mA (only HD2013… A …) or 0…10 V (only HD2013… V …)
Digital output SDI-12 (only HD2013… S …)
Resolution 0.1 – 0.2 or 0.5 mm/tip depending on model
Accuracy
Version with 0.2 mm @ 50 mm/h nominal resolution:
< 1% up to 30 mm/h
< 2% up to 40 mm/h
< 3% up to 60 mm/h
< 4% up to 100 mm/h
Version with 0.5 mm @ 50 mm/h nominal resolution:
+ 2…-3,5% in the interval 0…200 mm/h
The error refers to the calculation of the amount of rain using the resolution
stated in the rain gauge label.
If the amount of rain is calculated using the correction curves as a function of
the rainfall rate (fig. 2.1, 2.2 and 2.3), the error is typically less than ± 2% in
the interval 0…200 mm/h.
If the HD2013-DB data logger is used, the measurement can be automatically
corrected according to the graphs in fig. 2.1, 2.2 and 2.3.
With the analog and SDI-12 output options, the curve is stored in the rain
gauge itself.
Maximum rainfall rate
600 mm/h (versions with 0.1 and 0.2 mm nominal resolution)
1000 mm/h (version with 0.5 mm nominal resolution)
Operating temperature
without heating 0…+70 °C
with heating -20…+70 °C (heating intervention tempe4 °C)
Protection degree IP 64
Collector area 400 cm
2
Minimum section of the
connecting cable wires 0.5 mm
2
for the version without heating
2.5 mm
2
for the version with heating