MARC 7000 – Tritium Bubbler: Atmospheric Monitoring System with 4 Pots (With Oven) for Trapping Tritium in HTO, HT, and OBT Forms

– Tritium Bubbler Comparison –

This comparative table details the specifics and characteristics of tritium bubbler systems, highlighting the MARC 5000 model with 2 pots (without oven) and the MARC 7000 model with 4 pots (with oven).

	Tritium Bubbler - Marc 5000	Tritium Bubbler - Marc 7000
Trapped form of tritium	HTO only	HTO, HT and OBT
Nº of pots	2	4
Trapping yield (HTO)	HTO = 99% +/- 7%
Optimized trapping yield (HT)	❌	Furnace efficiency HT>HTO = 98 +/- 11%
T° furnace temperature	❌	200 à 500°C
T° trapping solution	Optional	7°C (for an ambient temperature of 20°C)
Weight (kg)	15kg (without cooling) 27kg (with cooling)	29kg
Max. Power (Watts)	260	700
Air Flow	✅	✅
Nomalization conditions	❌	✅
Sampling Duration	✅	✅
Volume of air sampled	✅	✅
Cold circuit temperature	✅	✅
Oven temperature	❌	✅
Standardized flow meter	10 à 50 Nl/h
T° of use	+2 à +45 °C
Storage tº	-5 à +70 °C
Adjusting the flow normalization temperature	0 à +25ºC
Display	Backlit LCD screen
Dimensions L x H x P (mm)	700 x 356 x 270
Footprint (mm)	1000 x 600 x 530
Power Supply	230 V / 50 Hz IEC plug (or 120 V / 60 Hz IEC plug)
Electrical protection	differential circuit breaker (sensivity = 30mA)
Air flow regulation	Automatic
Other features	Reset function for duration and volume before re-sampling
	Audible alarm in the event of faults during sampling and display of the fault sequence on the screen
	Memorization of the last 8 faults, data recoverable via the RS 232 output
	Remote reporting of faults

– Operating Principle –

The MARC 7000 bubbler is used for monitoring atmospheric tritium concentration levels in vapor and gas form from chimneys, ventilation systems, hoods, premises, or the environment.

The MARC 7000 samples water vapor form of tritium (HTO) by bubbling in water in the first two pots, after particle filtration in the air. Gas form tritium (HT) or organic (OBT) is oxidized in an oven equipped with a catalyst, and then trapped by the same principle in the last two pots. The measured tritium activity is then reported to the volume of air passed through the device to determine the volumetric activity of tritium in the air (in Bq/m3 of air).

– Performance –

(CEA Marcoule test report June 2006)

– Air Flow Process –

A pre-filter paper at the entrance (∅ 45 mm) prevents the aspiration of dust, and the electronic flow meter is protected by Gortex® filters. The air flows in glass vials (250 ml capacity) through stainless steel air tubes. The airflow can be adjusted from 10 to 50 liters per hour, regulated by a certified flow meter.

– Official Supplier –

Various nuclear power plants in Europe and worldwide.

– About SDEC –

SDEC is your global partner for SDEC solutions in radioprotection. Welcome to the world of SDEC France, a leader in environmental and scientific solutions for radioprotection in over 21 countries. Since 1991, SDEC France has been designing, manufacturing, and marketing a wide range of equipment for environmental study and monitoring.

– FAQ –