Portable Handheld Water Activity Meter

More details

New product
More info

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.


  • Handheld instrument measures relative humidity and temperature and calculates water activity
  • AW Quick function for fast measurement results (typically 4-5 minutes)
  • Audible alarm to indicate end of 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 9V 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 3s
Measurement interval 1s, 10s, 1 min, 10 min
Parameters shown Aw, %RH, °C, °F
LCD 3-line alphanumeric with trend indicators
Audible Alarm 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
Enclosure material ABS
IP protection rating IP30
FDA / GAMP FDA 21 CFR part 11 / GAMP5
CE / EMC conform EMC 2008/108/EG
Weight 300g

Contact Us

“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.


Please fill details below and one of our representative will contact you shortly. 

3 other products in the same category: