HAVSense Dosimeters

   
3 sensors along 3 orthogonal axes

Range (RMS) 
0.18 to 180ms-2 (Overload clips peak at 254ms-2 without hysteresis or lag)

Range (Freq.) 
5Hz – 1.6KHz
Data Recording
   
Sampled once per second (sum or x,y and z axes plus overload)
Hand-arm freq. weighting
   
Wh as defined by ISO 8041

Results   
Daily vibration exposure A(8) or Ahwx, Ahwy, Ahwz, HSE exposure points, overload per cent time.

User Identification   
Assigned when collected from dock
Warnings
     
 Normal Operation 1 flash every 4sec
 Reaching Action Level 1 flash every sec
 Limit Level 4 flashes per sec
   
Battery Life Minimum 12 hrs full charge   

Charge time 3.5 hrs (typical)
   

Temperature Range   
-10 – 40C (Operating)
0 – 40C (Charging)
Standards
Standards Compliance
   
CE ISO 8041:2005

   
IEC 61326-1:2005: Electrical equipment for measurement control and laboratory use
 
IEC 61010-1:2001: Safety requirements for electrical equipment for measurement control and laboratory use

HAVSense Hand Arm Vibration Measurement System

HAV Dosimeters are the truly unique component of the HAVSense System, completely self-contained, they record the entire vibration dosage imparted on the hands and fingers, unlike any other system available.

They have been ergonomically designed to fit comfortably between the fingers under or over a glove, require no wires or connections and automatically transfer their entire vibration record to your computer system when returned to the docking system at the end of a shift.

How They Work

The HAV dosimeters have been ergonomically developed to sit seamlessly between the fingers  whether beneath or above a glove. Careful design ensures our dosimeters don’t hinder movement or use of the hand, while still being right where the vibration occurs.

Thousands of times a second, the dosimeter filters and processes the signal from three sensors, positioned in the three axes. Every second, HSE points are automatically calculated and recorded by the dosimeter. Should the operator exceed either the action limit or the legal limit of HSE points the dosimeter will issue a visual alarm, indicating to the operator they must stop their exposure.

At the end of a shift, the dosimeter is simply placed back into the docking station which will transfer the vibration record to a PC and charge the dosimeter ready for the next shift.