The Eris1D is a handheld, compact and lightweight radiation monitor for detecting and measuring two different types of measures: Gamma and X-Rays dose rate (µSv/h), and alpha, beta and gamma radioactive contamination (cps).

The Eris1D has a Geiger-Müller detector with an open mica window for detecting the alpha, beta and gamma contamination. The measure of contamination rate (cps) is performed placing the filter so that the window of the detector is completely open. The measure of equivalent dose rate (µSv/h) is performed placing the filter so that the window of the detector is completely covered. The way to switch the type of measure is very easy: simply turning the filter, covering or not the window. A sensor detects the filter position and sets automatically the measuring type on the display.

The monitor is ready to use as soon as it is turned on and the surfing on the menu is very intuitive and user-friendly. The language of texts and messages are all in English. Its sophisticated firmware calculates the average value of the detected events in last seconds, correcting the dead time of the detector. This reading is very stable, but it is automatically updated when the radiation field varies more than three times the standard deviation of the previous reading. This makes the monitor has a fast response time and steady readings.

Both the dose rate in µSv/h and contamination rate in cps have two modes for displaying values: the Rate mode in which the average value is updated each second, and the Hold mode in which the maximum value reached is frozen on the display. Besides they have independent alarm threshold values, which can be set by the user and stored in the non-volatile memory. In case a reading value is above its alarm threshold value, an alarm message will be displayed. The monitor also has self-check routines and displays a warning message if the battery level is low, if the detector fails or if the reading overflows.

After its manufacturing, the Eris1D is tested, adjusted and calibrated. The monitor is supplied with a transport case with strap, with the user’s manual (in English) and certificates with the results of the measures in equivalent dose rate H*(10) (related to Cs-137) and the results of the calibration factors for some reference isotopes (ISO7503-1).

Type of measure	- With filter: Gamma y Rayos-X, H*(10), en Sv/h. - Withoul filter: Alfa, Beta, Gamma, en cps.
Detector	Geiger-Müller, mica window of 7 cm² (with protection grill, 80% of transparency)
Measuring modes	- Rate (dose or cps) - Maximum rate (dose or cps)
Indication range	- In radiation: 0.01 µSv/h - 3 mSv/h - In contamination: 0.00 cps - 10 Kcps
Optimun measuring range	0.1 µSv/h - 3 mSv/h
Gamma sensibility	aprox. 3 cps/µSv/h (related to Cs137)
Accuracy	±15% max., in measuring range
Energy range	In radiation (with filter): 30 KeV to 2.5 MeV
Energy dependence	In radiation (with filter): max ±25% for E>200KeV and E<2.5MeV (related to Cs137) High dependence for E<200KeV, calibration required
Typical 2pi efficiencies (4 mm. from the source)	In contaminación (without the filter): - Sr90+Y90 (β) ~ 38% - Cl36 (β) ~ 37% - C14 (β) ~ 10%
Response time	Automatic, minimum 1 s. According to 3-Sigma criteria it updates the mesurement if the detected value in last second has a deviation above three times the standard deviation of average value
Display	LCD 12x2
LED	- Frequency of events indicator - Alarm indicator
Audio	Controlled by keyboard
Keyboard	Four membrane pushbuttons: ON/OFF, MENU, AUDIO, RESET.
Power	Alkaline 9 volts battery. More than 80 hours of continuous operation (with a rate <1 µSv/h)
Dimensions	11.7 x 7.2 x 3.0 cm
Weight	220 g. (with battery)
Temperature range	-10ºC to +50ºC
Humidity range	max. 90% RH (non condensed).

This table shows a comparison between Eris1D and other models of Eris1 family.

	ERIS1R	ERIS1C	ERIS1D
Gamma and X-Rays H*(10) measurement	✔		✔
Alpha, Beta, Gamma contamination mesurement		✔	✔
µSv/h unit	✔		✔
CPS unit		✔	✔
Bq/cm² unit		✔
Isotope library (calibration coefficients)		✔
Rate measurement mode	✔	✔	✔
Accumulated dose mode	✔
Maximum rate mode (Hold)	✔	✔	✔
Adjustable alarm threshold in µSv/h	✔		✔
Adjustable alarm threshold in cps		✔	✔
Adjustable alarm threshold in Bq/cm²		✔
Self-testing with indication of alarms, detector fail, battery low level, and out of range	✔	✔	✔
Counter/Timer with adjustable measuring time		✔

Next table shows a comparison between Eris1D and instruments for radiation measurement.

	ERiS2-R	ERiS2-M/G	ERiS2-D	RM1001-RD	RM1001B-RD
Gamma and X-Rays H*(10) measurement	✔	✔	✔	✔	✔
Alpha, Beta, Gamma contamination measurement		with external sondes	✔
Internal detector	✔	Optional	✔	Optional	Optional
External sondes		Optional		Optional	Optional
Multiprobe		✔
Hand-held	✔	✔	✔	✔
Stationary		Optional		Optional	✔
Wall holder		Optional		Optional	✔
Rechargeable battery	✔	✔	✔		✔
External power				✔	✔
Data store	✔	✔	✔		Optional
Data Download/Register software	✔	✔	✔		Optional

Next table shows a comparison between Eris1D and instruments for contamination measurement.

	ERiS2-M/G	ERiS2-D	RM1001-CT	RM1001B-CT
Gamma and X-Rays H*(10) measurement	Optional	✔
Alpha, Beta, Gamma contamination measurement	with external sondes	✔	✔	✔
Built-in contamination detector		✔
External contamination sondes	Several models		Several models	Several models
Multiprobe	✔
Hand-held	✔	✔	✔
Stationary	Optional		Optional	✔
Wall holder	Optional		Optional	✔
Rechargeable battery	✔	✔		✔
External power			✔	✔
Data store	Optional	✔		Optional
Data Download/Register software	Optional	✔		Optional

• Firemen, police and emergency services
• Hazardous goods transport
• Research centers
• Hospitals
• Universities
• Radiological protection
• X-Rays systems
• Industry with radioactive sources
• etc...

ERIS1D Radiation and Contamination Monitor - Commercial Brochure in english - 10/07/2015 - 490KB