HFM11 Series high efficiency Hand and Foot Monitors help to reduce monitoring times; the longer hand detectors provide wrist and forearm coverage and there is an optional frisker probe available for additional monitoring.  The HFM11 provides fast, thorough, hand and foot monitoring with class-leading reliability and ease of use.

These units don’t require P-10 gas to use.  They were bought by a Utility that never put them into use.  A great deal on a HFM.

Radiological Performance     Hands     Feet     
Alpha:   

 241Am                                   34 %     26 %     
(% of surface emission rate)     

Nat U                                       12 %     6 %     
                
Beta:     

14C                                            8 %     5 %     
(% of surface emission rate)     

60Co                                        25 %     20 %     
36Cl                                        45 %     37 %     
                
Gamma:                                    130     270    (approx count rate in uniform field of 660 keV photons at 1 μSv/h)                 
                
Uniformity:     

241Am                                    ±15%     ±75%     
(variation across surface of detector)     

90Sr/90Y                                ±15%     ±60%