CF4 photoacoustic spectroscopy gas analyzer

CF4 photoacoustic spectroscopy gas analyzer

Testing requirements:

Cleanrooms need to control the level of pollutants. Accurate, reliable, and low-cost AMC control of gaseous molecular pollutants in clean rooms can significantly improve production capacity.

CF4 photoacoustic spectroscopy gas analyzerReliable monitoring:

The highly sensitive DKG ONE-CF4 can quickly detect pollutants in production environments. In addition, direct absorption detection can ensure long-term high stability due to its zero background property.

Ultra sensitive optical cantilever microphone

Technical application:

The DKG ONE-CF4 analyzer is based on ultra sensitive cantilever beam enhanced photoacoustic spectroscopy detection technology, combined with quantum cascade laser (QCL) light source, and operates on the mid infrared basic spectral absorption peak of CF4. The combination of these two provides sufficient sensitivity to detect the smallest concentration of CF4 overflow without delay, while ensuring ultra-high levels of stability. The recalibration cycle can last for several months or even years, greatly reducing the overall holding cost.

Advantage:

Accurate, reliable, and low-cost clean room pollution control

Fast response time to capture sudden increases in concentration

Independent operating system with built-in gas exchange pump

No consumables or chemical reagents

Short optical path length, single point calibration can also achieve outstanding dynamic range

Direct absorption measurement without drift

Calibration interval is long (up to several years)

High selectivity, unaffected by acetaldehyde and other VOCs

Features:

Highly selective monitoring of trace levels of CF4

Detection limit (LoD) below 0.1 ppb

The response time can be set from 3 seconds to 3 minutes

Wide dynamic range, stable operation

No consumables

Low sample size

Built in gas exchange system

Recalibration interval length (several months)

Intuitive user interface

Built in display screen, capable of displaying results digitally or graphically

Can be remotely operated through LAN

Chassis options:

Real time online analysis

DKG ONE-CF4 provides users with a simple and intuitive user interface, including a high-resolution display screen and a rotation button.

portable operation

The optional portable outer box is suitable for detecting foreseeable leakage areas.

Mobile integration solution

Several DKG ONE-CF4 units can be integrated into the same monitoring system.

Technical Principle

Working principle: Infrared photoacoustic spectroscopy

Ultra sensitive optical microphone, based on micro motor cantilever sensor, combined with laser interferometer to measure the micro motion of cantilever beam

Light source: distributed feedback quantum cascade laser

The temperature of the sample pool remains stable at 50 ℃

detection parameters

Response time: Depending on the channel integration time (C.I.T.) and gas replacement cycle, typically ranging from 3 seconds to 3 minutes

Detection limit: 0.1ppb

Dynamic Range: Typical Level 5 (100000 times detection limit)

Repeatability: Measurement values less than 1% at standard concentrations under working conditions

Accuracy: depends on the accuracy of the calibration concentration standard gas, typically 2-5%

Temperature stability: No impact within the working temperature range

Pressure stability: No impact within the pressure working range

General

19 "3 U industrial chassis, suitable for all desktop or rack mounted fixed installations

尺寸： 48.4cm W x 13.9cm H x 44cm D(19.1 In W x 5.5 in H x 17.3 in D)

Weight: Approximately 13kg

Embedded computer with built-in 7 "front display

The data storage capacity is sufficient for continuous monitoring for at least one year

Total gas production: 10-30ml

The rear panel has four gas interfaces, two of which are sampling interfaces, equipped with dust particle filters

Power supply:

Input voltage: 100-240VAC, 50-60 Hz

Input power: 100-200 W (depending on specific requirements)

Communication interfaces: Ethernet, USB

DKG ONE-CF4 can be remotely controlled through a smartphone, tablet, computer, or another DKG ONE-CF4 (soon to be launched)

environment

Operating conditions

Temperature range: 0 ℃ to+49 ℃

Humidity: No condensation

Pressure: 750mbar~1050 mbar

Dust/water rating: IP20 (IEC 529)

Storage conditions

Temperature range: -20 ℃ to+60 ℃

Sample gas conditions

Temperature range: 0 ℃ to+49 ℃

Humidity: No condensation, maximum relative humidity of 80% at a temperature of 35 ° C

Linear decrease to 35% when the temperature reaches 49 ° C

Pressure: 750 mbar to 1050 mbar

Airflow: approximately 1L/min

Particles<1 μ m

Standard:

Compliant with the Low Voltage Directive 2014/35/EU, EMC Directive 2004/108/EC, and ROHS 2 Directive 2011/65/EU