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22D Dual Diode Dosimeter

22D Dual Diode Dosimeter
22D Dual Diode Dosimeter
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22D Dual Diode Dosimeter.


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22D Dual Diode Dosimeter.

The Dual Diode Dosimeter is a compact, economical, battery-operated, dual channel diode detector monitor designed for simplicity of operation without compromising accuracy and reliability.

• Dual digital display

• Two calibrations per channel

• Accepts a wide variety of positive or negative diode detectors

• Slanted front panel for easy reading and control.

The user-friendliness is immediately apparent by its sloping control panel that allows operation from a convenient angle.  Collected exposure data from both channels is read simultaneously on two large, easy-to-read liquid crystal displays without switching.  Two independent calibration potentiometers for each channel allow individual custom calibration settings for up to two sets of diode detectors or two beams.  Operation is simple, only four switches are needed to select the calibration factors, dose or dose rate and to reset display to zero.  It is powered by a single, easily accessible 9 volt battery.  An input jack is provided for the UL-listed wall-mount transformer in case AC line operation is desired.

A special inherent feature of the Dual Diode Dosimeter is its compatibility with both negative and positive current output diode detectors:  EquiDose™, Isorad, QED, or VeriDose.  This flexibility allows utilization of existing diode detectors and future standardization.  When using with diode detectors that have a 2 or 3 meter cable, one extension cable of suitable length is needed per each channel.

When using with EquiDose™ diode detectors, an extension cable with Lemo and BNC-M connectors will be needed.

Display:  Two displays, one per each channel, 1/2" LCD 3 1/2 digit
Range:  0-1999 cGy and 0-1999 cGy/min
Accuracy:  ±1% dose and dose rate
Zero Drift:  <0.1 cGy/min
Linearity:  ±0.1% + 1 digit
Input Connector:  Coaxial BNC-F
Power:  One 9 V alkaline battery, NEDA 1604, External UL-Listed 115VAC wall-mount transformer
Battery Life:  Approx. 50 hrs. Continuous, 100 hrs. intermittent
Size:  10" x 8" x 4.1"
Weight:  1.75 lbs


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