Easy to use reference class or field class dosemeter for routine dosimetry.

Features
• An economical high quality dosemeter for universal use in  radiation therapy and diagnostic radiology
• Complies with the following standards:
IEC 60731 as a field class dosemeter
IEC 60731 as a reference class dosemeter (option)
IPEM guidelines on dosimetry transfer instruments as a secondary standard dosemeter (option)
IEC 61674 as a diagnostic dosemeter
• High accuracy, excellent resolution (1 fA) and wide dynamic measuring ranges
• HV power supply (0...±400) V in increments of ±50 V
• Measures integrated dose (or charge) and dose rate (or current) simultaneously
• RS232 interface for device control and data output

The lightweight and compact UNIDOS E is an easy to use dosemeter, mainly used for daily routine dosimetry in radiation therapy. Ion chambers and solid-state detectors can be connected. A chamber library makes it possible to store calibration data. Air density corrections are done by keying in air pressure and temperature. UNIDOS E displays the measured values of dose and dose rate in Gy, R, Gy/min, R/min or Gy•m. The electrical values charge and current are measured in C and A. The large, high-contrast LC display is easy to read. The device includes automatic leakage compensation and an RS232 interface. The high voltage between the ion chamber electrodes is checked automatically. UNIDOS E features both mains and battery operation.

Specifications

Resolution for current measurements: 1• 10-15 A
Resolution for charge measurements: 1 • 10-14 C
Measuring range for current measurements: (2 • 10-13 to 1 • 10-5) A
Measuring range for charge measurements: (2 • 10-12 to 6.5 • 10-2) C
Measuring range with 0.5% resolution (with Farmer Ionization Chamber Type 30001 (Item 322-001):
Dose Rate: 0.6 mGy/min to 3000 Gy/min
Dose: 0.1 mGy to 3.0 MGy
Long Term Stability: <± 0.5% according to IEC
Non-linearity: <±0.5 % acc. to IEC for dose measurements <± 1.0 % acc. to IEC for dose rate measurements
Internal Adjustment Time: <1.5 s
Accuracy of Current and Charge Measurement: 
 <± (0.5% ± 1 count)
Interval Time: 1 - 9999’s
Nominal Useful range:
Temperature Range: 10O - 40O C
Air Pressure Range: 700 - 1060 mbar
Humidity Range: 10 - 75% rel. humidity; 20 g/m3 max.
Leakage Current (Zero Drift): <± 10-15 A
Zeroing of the Amplifier: Automatically in approx. 50 s
Warming-Up Period: 15 minutes
Chamber Voltage: 0 - ± 400 V in 50 V-increments
Power Supply: Main Power 115-230 V; 50/60 Hz or from rechargeable NiCd batteries, operating time: 3 - 4 hrs.
Time Constant for Current and Dose Rate Measurements:  Low: 350 ms, Medium: 200 ms, High: 200 ms
Weight: Approximately 1.5 lbs
Outer Dimensions: 9.8” W x 6.3” D x 3.9” H
Connectors: Triax BNC-F or Triax TNC-F/M