HD2301.0K Thermohygrometer, complete with combined air temperature and humidity probe with SICRAM module HP472AC, instrument measuring range for temperature –200°C +650°C, for humidity 0,0…100,0%RH. Storage of maximum, minimum, average value. Functions: REL, HOLD and auto power off which can be disabled, IP 67 protection degree.
HD2101.1K Thermohygrometer, complete with combined air temperature and humidity probe with SICRAM module HP472AC, instrument measuring range for temperature –200°C +650°C, humidity 0,0…100,0%RH. Storage of maximum, minimum, average value, RS232 C output for data transfer in real time to a PC or printer. Functions: REL, HOLD and auto power off which can be disabled, IP 67 protection degree.

The HD2301.0 is a portable instrument with a
large LCD display. It measures relative humidity
and temperature using a Pt100 sensor or
thermocouple humidity temperature combined probe.

Temperature only is measured by immersion,
penetration or contact probes.

The sensor can be a Pt100, Pt1000 or Ni1000.
When the humidity/temperature combined probe is connected, the instrument calculates and
displays the absolute humidity, the dew point,
the partial vapor pressure.

The probes are fitted with an automatic detection module, with the factory calibration settings already
being memorized inside.
The Max, Min and Avg function calculate the maximum, minimum or average values.

INSTRUMENT TECHNICAL CHARACTERISTICS
Instrument
Dimensions
(Length x Width x Height) 140x88x38mm
Weight 160g (complete with batteries)
Materials ABS
Display 2x41⁄2 digits plus symbols
Visible area: 52x42mm
Operating conditions
Operating temperature -5…50°C
Stocking temperature -25…65°C
Working relative humidity 0…90%RH without condensation
Protection degree IP67
Power
Batteries 3 1.5V type AA batteries
Autonomy 200 hours with 1800mAh alkaline batteries
Power absorbed with instrument off 20μA
Measuring unit °C - °F - %RH - g/m3 - Td - hPa
Connections
Input module for the probes 8-pole male DIN45326 connector
Measurement of relative humidity by Instrument
Measurement range 0…100%RH
Resolution 0.1%RH
Accuracy ±0.1%RH
Drift after 1 year 0.1%RH/year
Measurement of temperature by Instrument
Pt100 measurement range -200…+650°C
Pt1000 measurement range -200…+650°C
Resolution 0.1°C
Accuracy ±0.1°C
Drift after 1 year 0.1°C/year

ORDER CODES
HD2301.0: The kit is composed of the instrument HD2301.0, combined probe HP472AC,
3 1.5V alkaline batteries, operating manual, case. Probes complete with SICRAM module
TEMPERATURE MEASUREMENT
TP472I: Immersion probe, sensor Pt100. Stem Ø 3mm, length 300mm.
Cable length 2 metres.
TP472I.0: Immersion probe, sensor Pt100. Stem Ø 3mm, length 230mm.
Cable length 2 metres.
TP473P.0: Penetration probe, sensor Pt100. Stem Ø 4mm, length 150mm.
Cable length 2 metres.
TP474C.0: Contact probe, sensor Pt100. Stem Ø 4mm, length 230mm, contact
surface Ø 5mm. Cable length 2 metres.
TP475A.0: Air probe, sensor Pt100. Stem Ø 4mm, length 230mm.
Cable length 2 metres.
TP472I.5: Immersion probe, sensor Pt100. Stem Ø 6mm, length 500mm.
Cable length 2 metres.
TP472I.10: Immersion probe, sensor Pt100. Stem Ø 6mm, length 1,000mm.
Cable length 2 metres.
RELATIVE HUMIDITY AND TEMPERATURE PROBES
HP472AC: Combined probe %RH and temperature, dimensions Ø 26x170mm.
Connection cable length 2 metres.
HP572AC: Combined probe %RH and temperature - thermocouple K sensor.
Dimensions Ø 26x170mm. Connection cable length 2 metres.
HP473AC: Combined probe %RH and temperature. Handle dimensions Ø 26x130mm,
probe Ø 14x110mm. Connection cable length 2 metres.
HP474AC: Combined probe %RH and temperature. Handle dimensions Ø 26x130mm,
probe Ø 14x210mm. Connection cable length 2 metres.
HP475AC: Combined probe %RH and temperature. Connection cable length 2
metres. Handle Ø 26x110mm. Stainless steel stem Ø 12x560mm.
Point Ø 13.5x75mm.
HP477DC: Combined sword probe %RH and temperature. Connection cable
length 2 metres. Handle Ø 26x110mm. Probe’s stem 18x4mm, length 520mm.
Temperature probes without SICRAM module
TP47.100: Immersion probe sensor Pt100 direct 4 wires. Probe’s stem Ø 3mm,
length 230mm. 4 wire connection cable with connector, length 2 metres.
TP47.1000: Immersion probe sensor Pt1000. Probe’s stem Ø 3mm, length
230mm. Connection cable 2 wires with connector, length 2 metres.
TP47: Only connector for probe connection: direct 4 wire Pt100, 2 wire Pt1000.
Accessories
HD11: Saturated solution at 11.3%RH@20°C for calibration of relative humidity
probes, fixing adapter M24x1.5
HD33: Saturated solution at 33.0%RH@20°C for calibration of relative humidity
probes, fixing adapter M24x1.5
HD75: Saturated solution at 75.4%RH@20°C for calibration of relative humidity
probes, fixing adapter M24x1.5
Protection for humidity probes HP472AC, HP572AC (M24x1,5)
P1: Stainless steel grid protection for probes Ø 26 mm.
P2: 20μ sintered polyethylene PE protection for probes Ø 26 mm. P3: 20μ sintered bronze protection for probes Ø 26 mm.
P4: 20μ sintered PE complete cap for probes Ø 26 mm.
Protection for humidity probes HP473AC, HP474AC, HP475AC (M12x1)
P5: Stainless steel grid protection for probes Ø 14 mm.
P6: 20μm sintered complete protection made of stainless steel for probes Ø 14 mm. P7: 10μm sintered complete protection made of PFTE for probes Ø 14 mm. UR-8