Electronic Tongue - Alpha MOS - (Version JPG) - Page n° 4 - PDF Catalogue | Technical Documentation

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Autosampler, Thermal desorber, Electronic nose, Sampler, Gas chromatograph

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Like the human tongue, the ASTREE Electronic Tongue

STo^ar ^o^bga^a;^na~;^pr;mi^o!^a_i^comptex

-■

The sensor head (7 cross selective sensors) dips into the liquid sample to be tested.

Taste receptor

Acquisition >

Brain analysis

Fingerprint Recognition

„ . . . . » Comparison Data ^treatment > statistical Analysis

Manipulation are automatically executed thanks to the software using multivariate statistics.

Sensors

Software analysis

Fingerprint Recognition



	1	1
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Sierdet^^

results

Discrimination of tea (origin & steeping time)

Caffein level prediction in coffees

Beer freshness discrimination

Percentage of recognition: 100

C1: 6,51%

Discrimination index: 96

ASTREE Values

Correlation: 0.993780

Residual Error

1.OE+3


							—<
					C
							Caffein 4

				C4	Caff	ein :	%
		C	3
		:2			_%

C1
		Caffein 1		%
Ca	Hem	0%


			C 8»	03
			o
Conform Area	ity

* •		O	ut specific products	ition
• •
• ■

Caffein 5%

1.OE+2

1.OE+1

1.OE+0

I.OE-1

1.OE-2

I.OE-2

1.OE-4

0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00

1.OE+2

Distances

1.OE+0

1.OE+1

1.OE+3

1.OE+4

C2: 93.20%

3 steeping times

- 4 minutes

- 6 minutes

- 8 minutes

Real Values (% of caffein)

■ Yunnan (Black tea from China)

■ Plantation d'Or (Black tea from China)

■ Ceylan (Black tea from Sri Lanka)

■ Wu Long (Tea from Taiwan)

■ Sencha (Green tea from Japan)

After building a predictive model (black spots), ASTREE can determine caffein concentration in various coffees (C1 to C6) with a very good reproducibility.

After a training phase, the ASTREE is able to discriminate fresh beers from aged beers (from 3 to 5 months).

system specifications

^y Liquid Autosampler □ with a carroussel capacity: 16 beakers (80 mL) or 48 beakers (20 mL), a programmable sample agitation, a robotic sensor head and individual connections for each sensor

► Astree Electrochemical Sensor Array B

including one reference electrode (Ag/AgCl) and 7 liquid cross selective sensors with 2 specific sets (Food & Beverage or Pharmaceutical industries).

► Astree Electronic Tongue Unit □ with sensor board (1 to 28 channels available), acquisition board (acquisition frequency 10 Hz), main board for data acquisition and power supply card (110-120 VAC, 220-240 VAC)

• External Input / output: RS232 connections

• Electronic Unit Dimensions (L x W x H): 26 x 30 x 100 cm - 66 x 76 x 254 inch

• Electronic Unit Weight: 25 kg

Astree Software V3.0 □ with autosampler and acquisition control, a complete multivariate statistics package (PCA, DFA, SIMCA, PLS) and various maintenance tools as automatic system diagnostic & sensor diagnostic

►

Analysis features:

• Environmental Conditions: operating temperature constant +/ 3°C

• Analysis Time 200s including:

- Sensor acquisition: 120s

- Rinsing time: 10s

• Precision: RSD < 3%

• Sensibility and Accuracy: sensors sensitive and partially selective to chemical species

- ionic and neutral.

►

Multi-language

software

Consumable Packages included: start-up

kit (beakers, diagnostic solutions), calibration solutions, complete maintenance kit (electrolyte, rinsing & diagnostic solutions, spare sensor set), accessory kit

►

Alpha M.O.S Headquarters 20, Av Didier Daurat 31400 Toulouse - France Ph: + 33 5 62475380 / Fax: + 33 5 61545615 E-mail: info@alpha-mos.com

Alpha M.O.S. America 33 North River St. Hillsborough, NJ 08 h: 908.359.9396 / Fax: 908.359.9398 ail: amusa@alpha-mos.com

® Visit our website: www.alpha-mos.com

Electronic Tongue - Alpha MOS - #4

Autosampler, Thermal desorber, Electronic nose, Sampler, Gas chromatograph