S4 QUASAR - Heated vacuum chemiluminescence NOx analyser

The S4 QUASAR Heated vaccuum chemiluminescence gas analysers combine high levels of performance with flexibility and ease-of-use in the continuous measurement of NOx, Nitric Oxide, Nitrogen Dioxide or Ammonia.Heated vacuum chemiluminescence is the reference method for monitoring NOx (combined NO and NO2), offering  higher sensitivity with minimal quenching effects, and a heated reaction chamber facilitates the processing of hot, wet sample gases without condensation. The reaction of NO (Nitric Oxide) and O3 (ozone) to produce the chemiluminescence is greatly improved under vacuum, with a better signal to noise ratio, and a fast response time makes it ideal for real-time reporting applications. This method is specified in many standards, such as EN 14792 and Method 7E.

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Key Features

• Very high vacuum with dry vac pump or atmospheric pressure versions

• ‘Hot’ and ‘Cold’ versions

• Totally automatic operation

• Wireless tablet

• Software suite for use over ethernet or RS232

• Dual detectors for continuous NO2, NO and NOx readings

• Trace PPM measurements standard

• High range % available

Documentation

➔ Datasheet

➔ Brochure

Technical Specification

MEASURING UNITS: PPM or mg/Cu.Mtr. user selectable

MEASURING RANGES:
Range A: 0-1000ppm. User settable to e.g. 0-1ppm, 0-5ppm, 0-10ppm, 0-50ppm, 0-100ppm, 0-500ppm, 0-1000ppm. Resolution: 0.01ppm
Range B: 0-10000ppm. User settable to e.g. 0-10ppm, 0-50ppm, 0-100ppm, 0-500ppm, 0-1000ppm, 0-5000ppm. 0-10,000ppm. Resolution: 0.1ppm
Range C. 0-100,000 ppm. User settable, with resolution of 1ppm

RESPONSE TIME: T90 <2.0s

REPEATABILITY: <1% FSD

QUENCHING EFFECT: CO2 and H2O Quenching. 2% of reading per 15% CO2 and 2% reading per 2% H2O

LINEARITY:
+/- 0.5% FSD or 2% of point
EN14181 – dc rel : <2%
R2 : >0.99

ZERO DRIFT: <0.5% FSD/24hrs

TEMPERATURE EFFECT ON ZERO: <0.15% per o C

TEMPERATURE EFFECT ON SPAN: <0.3% per o C

ZERO NOISE: <0.1ppm

SPAN NOISE: <+/-0.1%FSD for vacuum version. <+/-0.3%FSD for non-vacuum version

DETECTION LIMIT: 0.05mgC/m3

BYPASS FLOW SENSITIVITY: Less than 0.5% from 1 to 3 L/min

SAMPLE FILTER: Removable 0.4 micron PTFE

SAMPLE CONDITION: Max temp190o C Pressure -0.3bar to +0.5bar

OPERATING CONDITIONS: 5-40o C ambient temperature

AIR SUPPLY:
Air for Ozone (O3) flow 140ml/min.
Pressure 0-1bar max dewpoint 12o C.
Stable O2 concentration >20%

CONVERTER EFFICIENCY: NOx >95% or NH3 >85%

OUTPUTS:
0-10 Vdc
RS232
Ethernet
TCP/IP
Optional 4-20 mA

POWER REQUIREMENTS: 220-240 V AC 110-120 V AC 24 V DC 600 W max.

REMOTE CONTROL: AK protocol via RS232 port, Ethernet Comes with S4i remote software operating system.

SIZE AND WEIGHT: 19” (w) x 133.5 (h) x 530 mm (d). Apx. 30Kg

Optional Configurations

A colour touch screen front panel with a built-in SD card and a USB connector for data logging and software upgrades

• Span/zero/sample gas selector valves

• NEW: optional front panel display, detachable for wireless use up to 50 metres distance from the analyser

• Programmable contact closures