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Gases Sensed

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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.

Optional Configuration

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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

Relevant standards: 

  • EN14792 
  • Method 7e 
  • EURO VI/VII 
  • Ecodesign 
  • ARP1256D 

Applications

• Vehicle emissions 

• Scrubber efficiency 

• Combustion efficiency 

• Combustion emissions

• Flue gas emissions monitoring

• Process emissions monitoring

• Ammonia slip 

• Process control 

• Power plant de-nitrification 

• Fuel cell analysis 

• DeNOx 

• Selective Non-catalytic Reduction (SNCR) monitoring 

• Boiler/stove emissions compliance 

• Biomass combustion monitoring 

• Gas purity 

• Locomotive/automotive/marine combustion engine exhaust emissions 

• Gas turbine exhaust emissions  

• Continuous emissions monitoring (CEM) 

• Compliance monitoring 

• source emissions 

• Catalyst Research 

• Combustion research 

• NOx emissions monitoring 

• Adblue/Urea injection control

Documentation

➔ Datasheet

➔ Brochure

➔ User Manual

➔ Wireless Tablet User Manual

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

Quasar CLD Type:
HVCLD-DNOX (Hot/Wet)
HVCLD-DNOX (NH3) – Dual NOX/NH3 

Power Supply:
110VAC/220VAC (Standard – Universal)   
24VDC                                                       

Ranges:
0-1000ppm (0.1%)
0-10,000ppm (1% – Standard)
0-100,000ppm – High Range (0-10%) 

Front Panel:
Blank  
Removable Wireless Tablet 

Pumps*:
External vacuum pump
External sample pump 

Output* (Analogue outputs are either 0-10VDC or 4-20mA):
0-10VDC (Standard)
4-20mA (optional at extra cost)
Upgraded chart output (20 additional alarms) 

MI/995 – Analogue Output SCSI Cable (optional at extra cost):
Yes
No  

 

Notes: 

– HVCLD-NOX: Heated vacuum CLD, measures NO, NO2 and NOx using a switched arrangement. 

– HVCLD-DNOX: Heated dual detector CLD for continuous measurement of NO, NO2 and NOx. 

– HVCLD-DNOX (NH3): Heated dual detector CLD for continuous measurement of NH3. 

– Blank Panel is provided with free issued S4i software to act as remote display and to automate coarse and fine calibration. Display: Removable wireless tablet with on-board logging facility. 

– Pump control module can be used for automatic remote control of pumps as part of system. 

– External Sample Pump to be used where sample is not under positive pressure. 

– The standard I/O includes 3 contact closure alarm outputs. This upgraded option has 23 user configurable contact closure that can be used for alarms or to control external functions such as down-the-line calibration where valves to introduce calibration gas at the sample inlet point can be controlled automatically. 

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