Description

New capabilities of Terra-P+

In comparison with “TERRA-P” dosimeter-radiometer, “TERRA-P +” has new features:

– gamma radiation ambient dose equivalent rate

– gamma radiation ambient dose equivalent

– surface beta-particles flux density

– apartments and offices,

– items of everyday use,

– clothes,

– means of transportation,

– bank-notes,

– building materials,

– ground surface of infields,

– food items (especially berries and mushrooms)

Five independent measuring channels with alternate indication of data on the single liquid crystal display
Built-in gamma, beta sensitive Geiger-Muller counter
Automatic setting of measurement intervals and ranges
Audio signalling of each detected gamma-quantum and beta-particle
Two-tone audio alarm of exceeded programmed threshold levels
Digital display backlight
Two AAA size batteries
Low battery indication
Shock resistant body
Small weight and dimension parameters

Measurement ranges and main relative errors
Gamma radiation dose equivalent rate (¹³⁷Cs)	µSv/h	0.1…5 000
	%	,where is a numeric value of the measured DER in μSv/h
Gamma radiation dose equivalent (¹³⁷Cs)	mSv	0.001…9 999; ±25%
Beta-particles flux density (⁹⁰Sr+⁹⁰Y)	1/(сm²·min)	10…10 000;
Beta-particles flux density (⁹⁰Sr+⁹⁰Y)	%	,where – is a numeric value of the measured surface flux density in part./(cm²·min)
Dose equivalent accumulation time and accuracy of measurement	1min…100h; ±0.1s per 24h
Energy ranges of measurement and energy dependence
Gamma radiation	MeV	0.05…3.0; ±25%
Beta radiation	MeV	0.5…3.0
Ranges of threshold level values programming for: – ambient dose equivalent rate – ambient dose equivalent – flux density	µSv/h mSv 10³/cm²·min	0…5 000 0…9 999 0…9 999
Resolution of threshold level programming for: – ambient dose equivalent rate – ambient dose equivalent – flux density	µSv/h mSv 10³/cm²·min	0.01 0.001 0.01
Battery life	hours	2 000
Operating temperature range	°С	-20…+50
Weight	kg	0,15
Dimensions	mm	120×52×26