This email address is being protected from spambots. You need JavaScript enabled to view it.


Jakarta Office :


   Surabaya Office :   


Rotronic HC2-LDP-EX


Low dew point probe. Reliable measurement of trace moisture.

The low dew point probe comes with the latest AirChip4000 technology. Calculates a measurement from the average of 8,000 single points within a 2 second interval and, together with the HYGROMER® LDP-1 dew point sensor, delivers measurements of the highest quality.

Field of Application

The low dew point probe can be used in compressed air systems, refrigeration driers and adsorption driers. ROTRONIC offers the probe with EX certificate for environments with ATEX requirements.



Probe type Digital dew point & temperature probe
Dimensions 145 x 140 mm (probe head)
Hexagonal nut: 3 x 140 mm
Weight 260 g
Measuring range -70…85 °C Td / -40...85 °C
Dew point accuracy @ 23 °C ±2 K Td (-50…20 °C Td)
±3.5 K Td (-60…-50 °C Td)
Temperature accuracy @ 23 °C ±0.2 K
Dew point sensor HYGROMER® LDP-1
Long-term stability dew point sensor <1 °C Td/year
Response time dew point sensor Ƭ63: @ -50 °C Td Typically <10 min, with filter
Response time temperature sensor Ƭ63: @ -50 °C Td Typically <15 min, with filter
Pressure resistance 16 bar
100 bar (with LDP-MCS measurement chamber)
Power supply / Power consumption 3.3...5 VDC / <1.5 mA
Temperature sensor Pt1000, Class B 1/3
Filter cartridge Sintered stainless steel, 50 μm
Measurement interval 2 seconds
Communication interfaces UART
Housing Stainless steel 1.4301
IP protection rating IP65
FDA/GAMP compatibility Yes
CE / EMC conform 2004/108/EC
Identification EX North America Class I, Div 1/2, Groups ABCD T5…T4,
Class II, Div 1/2, Groups EFG T80°C…T110°C
Ex e mb [ia Ga] IIC T5...T4 Ga/Gb
Ex tb [ia Da] IIIC T80°C…T110°C Da/Db
Class I, Zone 0/1, AEx e mb [ia Ga] IIC T5…T4 Ga/Gb
Class II, Zone 20/21, AEx tb [ia Da] IIIC T80°C…T110°C Da/Db
Maintenance Annual calibration (recommended)
Storage and transport conditions -40…85 °C, non-condensing











Ladbrokes Review L.BetRoll
Top United Kingdom Bookmakers