Model MAX-4000
Brachytherapy Electrometer
Exceptional sensitivity and a wide dynamic range makes the MAX-4000 electrometer a good choice for brachytherapy measurements. In rate mode it provides immediate measurement of even the lowest activity isotopes. For example, a 0.27mCi iodine seed, measured in the HDR1000+ well chamber, gives a signal of 1.458pA. The MAX-4000 can measure 10Ci and higher iridium sources in rate mode or integrate mode over time.
The built-in countdown timer can be preset in 15 second increments up to 600 seconds. A few buttons control all operations. Zeroing is automatic; press a button and you are ready to measure. A digital filter built into the MAX-4000 eliminates the effect of noise resulting in a very stable and exact measurement.
The MAX-4000 is versatile enough to be used for all external beam applications, using Farmer-type ion chambers, chambers typically used for data acquisition in water phantoms and chambers used for quality assurance tests.
The MAX-4000 is designed to exceed AAPM, ADCL and reference-grade instrument stated specifications in many areas, including reproducibility, resolution, linearity, long-term
stability and repeatable measurement accuracy.