PROCESS
ANALYZERS,
SERVICE &
CONSULTING

 


 


MODEL PG 945 CE

 PIT-GAS-ANALYZER

FOR CLAUS SULPHUR PITS

TO MONITOR H2S/SO2

UV-spectrophotometer

Ideal for:

·       Gas phase monitoring above the liquid sulphur in the pit

·       Sulphur de-gasification processes

·       Detection of smouldering fires
(SO2-Konzentration)

·       Detection  of lower explosion limit concentrations [LEL]
(H2S-Konzentration)

  

 

General:

·       Low installation cost
·       No expansive shelter required
·       User and service friendly modular design

 Sample System:

·       Reliable and trouble free due to controlled sulphur condensation prior to sample extraction
·       No Sample Lines, close coupled mounting and low volume 
à  extreme fast response
     (3…5 sec. typical)
·       Hermetically separated from electronics/ optics (fibre coupled)

 Spektro-Fotometer:

·       Full spectrum analyses with high wavelength resolution
·       Excellent cross-interference compensation for high accuracy measurements under real process conditions
·       High linearity; Wide dynamic range
·       Extreme over range capability
·       No moving parts, no optical filters
·       Easy handling due to self explaining display
·       Extensive self diagnostic built in

Technical Data

Electrical Classification

EEx p ib (ia) m e IIB T3   Cert.No.: TÜV 00 ATEX 1616                or

General Purpose according IEC/VDE
Packaging according to North American Standards

Power Supply

1/N/PE ~ 50/60 Hz  230 V   or   115 V

Power Consumption

1200 Watt

Protection

IP 65 according  IEC 529  DIN 40 050

Instrument air or
another inert gas

Dew point   -40 °C (-40 °F)

Pressure: 5.5 ...     7 barg  
                550 ... 700 kPa                          

Flow:   3,4 m³/h normal
25 m³/h at short intervals

To comply with ANSI/ISA                S7 – 3 – 1975 R/1981

Steam Supply

8.0 ... 12.0 barg for the analyzer Oven heater

3.5 ...  4.5 barg for the Analyzer Nozzle

SIGNAL OUTPUTS

 

Analog

4 ... 20 mA per measuring channel, updated once per second,
isolated to 250 Vrms , self- or loop powered, load < 1000
W,
Available live or track and hold

Output signals linear to concentration:

1. Hydrogen Sulphide H2S       0 … 0,5   to   0 ... 10 vol %                   
2. Sulphur Dioxide      SO2        0…0,25   to   0 ...  5 vol %

Digital

Potential free SPDT relay contacts. Isolated to 250 Vrms
The operational status outputs:         STATUS (Fault/Normal)
                                                           SERVICE (Warning/Normal)
                                                           MODE (Calibrate/Run)

Display

Flat Paned Industrial PC c/w 12” TFT screen

Material in sample contact

Stainless steel, high purity aluminum or PTFE

Source

Highly stable deuterium broad band lamp

Detector

Spectrometer with a 2048 element CCD array detector

Accuracy

Measurement at the process:                  

± 1 % H2S      F.S.

± 1 % SO2      F.S.

Speed of response T90

Typical 3..5 seconds

Warm up time

< 90 minutes, stable after 2 hours

Repeatability

± 1.0 % F.S.

Sensitivity

H2S – reading  ± 1.0 % F. S.

SO2 – reading  ± 1.0 % F.S.

Zero drift

 

0.25 % F.S. in 24 hours

Based on Auto Zero every four hours.

Calibration

H2S, SO2  and COS outputs factory calibrated.
Air Demand Signal calculated from H2S and SO2

Sample flow

80 Liter/h

Sample transport

Air – or Nitrogen aspiration

Weight

175 kg

This Analyzer is based on BRIMSTONE Technology.

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