HygroPalm - HP23-AW-A - portable analyzer

In many situations it can be very useful to measure water activity in production or storage rooms, e.g. inspection of bulk materials to ensure they meet specifications. The HygroPalm 23-AW-A is ideal for measuring water activity in production processes such as random checks of cheese, meat, tobacco, building materials, animal feeds, bakery products, paper, medicines, horticulture, agriculture, etc.


The HygroPalm HP23-AW-A offers the perfect solution for on-site water activity measurements to confirm product stability and indicate shelf life. The HP23-AW-A is suitable as a mobile laboratory unit. Equal to the HygroLab C1 the HP23-AW-A is perfect as a portable analyzer with two probe inputs for any suitable HC2 probe. The HP23-AW-A can also be used in conjunction with HW4-P-QUICK-Vx.

Portable and convenient
Handheld instrument specially configured to suit the water activity user. It includes many of the advanced features of the HygroLab C1, but in a convenient portable configuration.medicines, horticulture, agriculture, etc.

• 2 input channels for HC2 station probes or HC2 insertion probes can be connected for measurement of water activity, relative humidity and temperature
• AW Quick function for fast measurement results (typically 4-5 minutes)
• Audible alarm to indicate completed measurement
• Saves up to 10'000 data records with %rh, °C, date and time
• Battery charging function

Weight 200g
Range of application -10…60 °C (14…140 °F) / 0…1 Aw / 0…100 %RH
Power supply / Power consumption 9 V battery or 9V power supply via mini USB, consumption <10 mA
Power supply 9 V battery or USB/ mains adapter via mini USB
Current consumption Max. 20 mA (backlight ON)
Calculations All psychrometric calculations available
Number of probe inputs 1
Probe connections 2 HygroClip2 or analog input 0…3.2 VDC (power supply for analog probe: 5 VDC)
Start-up time 3 s
Measurement interval 1 s, 10 s, 1 min, 10 min
Parameters shown Aw, % RH, °C, °F
LCD 3-line alphanumeric with trend indicators
Acoustical alarm (Beeper) No
Battery indicator Yes
Clock Real time clock provides a time stamp for every measurement
Memory size Capture mode: 8 x 250 values / Logging mode: 10,000 values
HW4 compatible Yes, for all HW4 versions
Probe adjustment Single or multiple point for relative humidity & temperature.
One or two point temperature
Aw-quick mode Yes
Aw Quick function Integrated and via HW4 software HW4-P-QUICK-Vx (in shipment included)
Firmware update With internet and HW4 software
Communication interfaces Mini USB
Service Interface Mini USB
Enclosure material ABS
IP protection rating IP30
FDA / GAMP FDA 21 CFR part 11 / GAMP5
CE / EMC conform EMC 2008/108/EG
Weight 300.0000