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便携式电子鼻

PEN3是一款用于检测气体和气体混合物的识别系统，运行快捷，结构稳定有效。通过内部的多种不同的传感器组成的阵列，对气体进行定性分析。通过气态混合物在传感器阵列中形成的各种图谱，利用模式识别技术，进行类别分析。标准气态混合物在通过Pen3进行标准图谱分析后，可通过对待测物产生的图谱与标准图谱进行分析比较，从而辨认或区分出待测物的性质与类别。通过运用不同的模式识别算法，这种仪器最多可以识别10种不同的物质或者以标准样品的图谱信息为依据，得出简单快捷的“合格-不合格”或者“是-否”的结论。

此外，这种仪器还可以进行量化分析。设备中的智能化泵机系统可以在实验室或者活动性应用时的不同条件下发挥作用，例如用于环保或者生产过程的监控。

产品主要特点：

•小巧，快捷，坚固

•识别能力强

•可以在线取样

• A3-专利技术：自动稀释功能-自动校准功能-自动浓缩功能（备选）

PEN3电子鼻是一种用来检测气体和蒸汽的小巧、快捷、高效的检测系统。它经过训练后可以很快辨别单一化合物或者混合气体。通过不同的识别计算系统可以扩大它的应用范围。

德国PEN3电子鼻应用范围及过程控制：食品生产中添加剂的用量，工业清洗过程的控制，发酵过程控制，自然气体中人造气体的量，食品工业中包装物的生产控制，油榨或烧烤的过程控制。

德国PEN3电子鼻质量控制：油脂的恶臭，食品的新鲜度，包装物的外散气体，聚合物的溶剂残留物，风味的退化，药物气体，树脂的特点，饮料的香气等。

德国PEN3电子鼻环境安全控制：废水纯化过程的气味，肥料气味，过滤过程管理，工作室中空气中的有机溶剂，细菌辨别，泄露控制，燃烧控制。

德国PEN3电子鼻食品方面应用举例：

1、食品腐臭分析

2、 糖蜜种类和芳香特性的分析

3、 肉品新鲜度分析

4、 水果新鲜度芳香种类的分析

5、 酸奶和酸奶辅料的鉴定分析

6、 牛奶新鲜度分析
7、 果汁等不含酒精的饮料的区分判定

8、 酒精饮料香气的区别分析

9、 谷物生长分析
10、咖啡及相关产品的香气分析

11、烟草质量及香气分析
12、其它食品香气的分析

为了配合德国PEN3电子鼻的性能提升，可以配套以下EDU3吸附浓缩装置使用

EDU3全自动采样和解吸附装置

吸附和加热解吸附方法是在实验室采样或者样品前处理过程的一个很好方法，利用这种技术可以吸附混合物，依据目标物和采样时间，可以达到10---1000的富集作用。

这样使联用的电子鼻或气相色谱仪等仪器可以获得很低的检测限。另外一个优势是其特殊的采样过程可以依据特定的目的有选择性的捕捉。与特殊气味相关的化合物可以通过特定物质进行吸附富集，而没用的化合物就被忽略了。分析含酒精的饮料可以忽略酒精浓度对其检测的影响。它的检测和人的嗅觉有很好的相关性。因此，你可以很灵敏的检测你感兴趣的物质。

这个系统可以独立工作，进行采样、加热解吸附、注射、清洗和自动冷却等。另外它可以进行采样管的加热解吸附，手动式采样，或通过外置泵进样。也可以直接连接电子鼻或GC使用

PEN 3 is our small, fast and
flexible identification

system for gases and vapors.

Single compounds or mixtures of
gases can be

recognized after a
"training" step. With its variety

of pattern recognition algorithms
the system can

be adapted to a broad range of
applications.

PEN3 is based on a 10 metal oxide
gas sensor

array built into a small-volume
measuring chamber. The user has full access to all parameters of

the instrument.

Specialized flow control inside
the instrument ensures stability of patterns under rough conditions.

A calibration procedure has been
developed according to newest technical knowledge and ensures stable operation
for a long term operation.

Because of its particular sampling
strategy, sensor array can be operated in the laboratory as well

as online for process control or
environmental

monitoring applications. Sampling
with the autoranging sampling system is
the favourite technique in mobile or
process control applications. In

the lab the detector can be used
with a headspace autosampler. An optional adsorbent trapping unit (EDU) is also
available for the system.

Software

The instrument provides a quick
and easy

qualitive answers like good or
bad, yes or no, ... .

Also qualitative answers can be
obtained by training descriptor relations with the sample set into

the database: Euclid, Correlation,
Neural Networks, Mahalanobis, PCA, LDA, DFA and PLS.

Applications

Process Control: dosage of spices
in food production, supervision of industrial cleaning processes, fermentation
processes, dosage of artificial

odor in natural gas, production of
polymer packaging material for food industry, frying or roast

process control

Quality Control: rancidity of
oils, freshness of

food, off odor in packaging
materials, residual solvents in polymers, degradation of flavors, off odor

in medicine, characterization of
resins, aroma in

beverages

Environmental & Safety
Control: odor in waste

water purification plants or in
compost plants (correlation with olfactometry), supervision of filters,

solvents at workplace
atmosphere, smouldering

fires, identification of bacteria, leakage control,

combustion emissions

Advantage of PEN3:

•Small, Fast and Robust

•Sensitive Sensors

•Online Sampling Technique

•Sensor Protection for Long
Lifetime

•Optional Enrichment Unit

•Stand - Alone Operation

•
A3-Technology: Automatic Ranging,

Automatic Calibration, Automatic
Enrichment (optional)

•Graphic Colour
DisplaySpecifications

Sampling

Inlet Sampler special fluidic
connector

Flow 10 ml/min to 400 ml/min,
built-in flow

Sensor technology hot sensors, working temperature 200°C to
500°C

Sensor array 10 different metal
oxides single thick film sensors,

Sensor chamber volume 1.8 ml,
temperature 110°C, stainless steel

Sensor response time typically:
less than 1 second

Measurement cycle time depending
on the application from 4 seconds to some minutes.

Typically: 1 min (20 s
measurement, 40 s recovery time)

System 2 internal pumps (sampling
and zero gas)

Zero gas air, charcoal filtered or
zero gas generator

Calibration external calibration
procedure

Pattern stability e.g. 1 year for aromatic solvents

Sensitivity LOD 0,1 to 5 ppm for gases and organic
solvents, e.g. H2S: 0.1 ppm,

benzene: 1 ppm

Environment Requirements

Temperature typical: 0°C to 45°C

Humidity (relative) 5% to 95%,
non-condensing

Power Requirement

Main Power 110 to 230VAC or 12VDC
(optional), max. 30W

Communication

Computer Interface USB port or
serial RS-232 (optional)

Device Control / Data Handling

Requirements Win98SE, ME, 2000, XP

Software WinMuster for data
acquisition and analysis (algorithms)

System descriptions

Display 60 x 38 mm graphic
display, CFC backlight

Dimensions 255 x 190 x 92mm

Weight 2.1 kg

Safety class Compliant to EN292
Part1 & 2, EN294, EN61010-1, EN1050,

EN60204-1, EN 55011 G1 CB,
EN50270, EN61326

Warranty 12 month