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CDX 2000B Electrometer

CDX 2000B Electrometer

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CDX 2000B Electrometer.


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CDX 2000B Electrometer.

Versatile, Affordable

The compact, stable, lightweight and easily transported CDX 2000B has wide amp and coulomb ranges for both external beam dosimetry measurements and precise HDR brachytherapy calibrations.

Exceptional Range for Many Applications
The CDX 2000B’s wide range make it an excellent instrument for absolute dosimetry measurements with standard Farmer-type ion chambers and parallel plate ion chambers. It is extremely reliable and precise for HDR brachytherapy calibrations.

Wide range for both external beam and brachytherapy measurements.

Low Noise and Stable Repeatability
A powerful digital microprocessor provides 0.1% repeatability and exceptionally low leakage of less than 5 fA. The digital filter nearly eliminates the effects of noise, resulting in extremely stable readings.

Easy to use pressure sensitive buttons control the operations. With user activated zeroing, just press the button and it is ready to measure. The rechargeable battery operation, with percent of battery charge displayed on the screen, provides convenient use.

Unique Timing Capabilities
The unique timing feature is ideally suited for HDR brachytherapy calibration measurements.  The CDX 2000B can capture charge for a selected amount of time during an exposure, thereby eliminating end effects or other variable portions of an exposure. 

This application is very useful during the measurement of high dose rate brachytherapy sources allowing the measurement of charge only during the time the source is in place and the rate is constant.

Rate Mode:  0.01 nA - 195.00 nA
Charge Mode:  0.01 nC - 999,999 nC
Combined:  Accumulated charge and current are displayed simultaneously
Timed:  User set duration (Range: 0-600 sec; Increment: 15 sec; Resolution: 1 sec)
Max Run:  Unlimited duration with manual stop
Short Term Repeatability:  ± 0.1% ±  1 count
Long Term Repeatability:  ±0.2% (maximum change over two years)
Signal Setting Time (typical):  1 sec
Linearity:  ±0.06% typical
Zero Drift:  < 5 fA @ STP
5 User Bias Settings:  -300, -150, 0; 150, 300 (VDC)
Bias Accuracy:  ±0.3 volt
Display:  LCD, 2 x 20 with 5/16” characters
Input:  BNC-F two lug, triaxial connector
Bias Voltage:  Nominal ± 300 volt bias.

UL listed and CE marked wall-mounted power supply
110 or 220 VAC input
9VDC@300 mA output
Internal battery: 10 hrs/charge

Zeroing:  Automatic zero function, user activated.
Output:  Isolated RS-232, bi-directional, 19,200 baud rate, 8 data bits, no parity, 1 stop bit
Dimensions:  8.24” W x 9” L x 2.75” H
Weight:  3 lbs

CE0413:  Externally certified IEC 60601-1, IEC 60601-1-2, Designed to meet IEC 60731

Data Sheet