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DECLARATION OF CONFORMITY 

 
 

Manufacturer: 

Ion Science Ltd, The Way, Fowlmere, Cambridge, SG8 7UJ, UK 

 

Product: 

T VOC

 

 

Product Description: 

An

 

intrinsically safe fixed continuous monitor comprising of a photo-ionisation 

detector for detecting and measuring volatile organic compounds with a 4-20mA 
output 

 
 

Directive 94/9/EC  

ATEX 

 

Identification:   

  

II 2G E x ia I IC T4  (-20

o

≤ Ta ≤ +50

o

C) 

 

Notified Body:   

Baseefa Ltd, 1180, Buxton, UK 

 
 

EC Type Examination Certificate(s) 

 

Baseefa05ATEX0277 

latest supplement Baseefa03ATEX742/2 issued 24

th 

November 2008 

 

IECEx BAS 06.0057 

latest revision no.1 issued 20

th

 November 2008 

 

 

Standards 

 

BS EN 60079-0:2006 

Electrical Apparatus for Potentially Explosive Atmospheres 

– General Requirement 

 

BS EN 60079-11:2007  Explosive Atmospheres - Equipment Protection by Intrinsic Safety 

‘i’ 

 

BS EN 61010-1:2001 

Safety requirements for electrical equipment for measurement, control and 
laboratory use 

– General requirements  

 
 

Directive 2004/108EC  Electrical Equipment – Electromagnetic Compatibility (EMC) 

 

BS EN 50270:1999 

Electromagnetic compatibility. Electrical apparatus for the detection and 
measurement of combustible gases, toxic gases or oxygen 

 

BS EN 61000-6-6:2001  Electromagnetic Compatibility (EMC) Generic standards. Emission standard for 

residential, commercial and light industrial environments 

 

With respect to BS EN 50270: 1999, the TVOC achieves perf ormance criteria  A (the apparat us continues to operate as  
intended  bef ore and  after the test) except at spot frequenc ies where  it achiev es criteria B (the apparatus continues to  
perf orm after the test but during the test a degradat ion of perf ormance is seen). See technical specif ication f or details. 

 

Other Standards

 

 

BS EN ISO 9001:2000  Quality Management Systems 

– Requirements 

 

BS EN 13980:2002 

Potentially Explosive Atmospheres 

– Application of Quality Systems 

 
 

On behalf of Ion Science Ltd, I declare that, on the date this product accompanied by this declaration is 
placed on the market, the product conforms to all technical and regulatory requirements of the above listed 
directives. 
 
 

Name:

  Mark Stockdale  

 

 

Position:

 Technical Director 

 
                                          

Signature:

 

 Date:

 20

th

 November 2008

 

 
 
 

Summary of Contents for TVOC

Page 1: ...TVOC User Manual V2 6 ______________________________________________ Part No 849215 www ionscience com...

Page 2: ...TVOC MANUAL Ion Science Ltd Page 2 of 32...

Page 3: ...Electromagnetic Compatibility EMC BS EN 50270 1999 Electromagnetic compatibility Electrical apparatus for the detection and measurement of combustible gases toxic gases or oxygen BS EN 61000 6 6 2001...

Page 4: ...lications 12 Intrinsically Safe IS applications 14 Initial calibration 16 6 Operation 17 Start up 17 Cycle times 17 LED s 18 Selector pins 18 Calibration mode 19 7 Calibration 20 Calibration routine 2...

Page 5: ...erated and serviced by qualified personnel 3 Please read and understand this user manual fully before installing operating or servicing TVOC Quality assurance TVOC has been manufactured in compliance...

Page 6: ...tinuous 4 20 mA output which can be integrated into a DCS control system to give an indication of VOC levels in the operating environment In addition to the 4 20 mA output TVOC has an LCD display show...

Page 7: ...n the contents and the packing list must be reported to Ion Science Ltd within 10 days of receipt of shipment Ion Science cannot be held responsible for shortages not reported with in the period Stand...

Page 8: ...ector pins mounted on the reverse side of the main PCB Diagram 4 1 shows the location of the functional selector pins labelled A B C D The selector pins absence or presence determines the chosen setti...

Page 9: ...See the calibration section of this manual NOTE TVOC is shipped with all selector pins fitted as standard TVOC only reads the selector pin settings when power is connected Always ensure power is disco...

Page 10: ...ower if detecting VOC gases that are heavier than air but never on the floor This should maximise detection Mount TVOC in an area that has good air circulation Restricting natural air current may resu...

Page 11: ...e 11 of 32 5 Installation 5 2 Mounting Dimensions for mounting TVOC are given in Diagram 5 2 1 below Diagram 5 2 1 NOTE The TVOC case can be used as a template when marking out fixing holes but do not...

Page 12: ...using screened cables for both power in and signal out Cable screens must be terminated at the TVOC enclosure using EMC cable glands 5 4 Power requirements 5 4 1 Non Intrinsically Safe Non IS applica...

Page 13: ...en the unit is installed with a non IS rated power supply the IS details on the front of the unit are not appropriate for the system The IS label should be covered up or blocked out This will prevent...

Page 14: ...barriers for 4 20mA OUTLET Manufacturer Manufacturers pt no Type Pepperl Fuchs Z728 Zener barrier Pepperl Fuchs KFD2STC4 Ex1 Galvanic isolator MTL MTL7787 Zener barrier MTL MTL5042 Galvanic isolator...

Page 15: ...on Science Ltd Page 15 of 32 5 Installation Diagram 5 4 2 1 Control equipment sensing 4 20 mA at supply rail Diagram 5 4 2 2 Control equipment sensing 4 20 mA to 0V Diagram 5 4 2 3 Control equipment s...

Page 16: ...dispatch using 100ppm Isobutylene However if you wish to calibrate your TVOC once it is installed Ion Science recommends that the TVOC is left to run on its chosen settings see Section 4 TVOC Set up...

Page 17: ...the length of time between servicing also depend on ambient air quality the higher VOC concentration detected by the instrument then the shorter the time between servicing 6 2 1 Adjusting the lamp OF...

Page 18: ...conds At the end of the Start up routine TVOC will enter the selected monitoring routine 6 3 LED s The GREEN LED indicates TVOC s working status ON Indicates the PID lamp is OFF Flashing Indicates the...

Page 19: ...urred 6 6 Calibration gases TVOC has three 3 ranges that can be selected however the 0 10ppm range requires the instrument is calibrated by the user before use The 0 100ppm and the 0 1000ppm ranges ca...

Page 20: ...TVOC is working to specification NOTE Please read this entire calibration procedure before attempting a calibration TVOC calibration has 4 stages 1 Setting the ZERO Using clean gas via carbon filter 2...

Page 21: ...uring this stage TVOC displays a direct milivolt mV output from the PID sensor 5 Slowly and repeatedly squeeze the hand aspirator to push clean air through the carbon filter and past the PID sensor Th...

Page 22: ...through the numbers and remove the magnet at the desired figure The selected number will be recorded 5 seconds after the removal of the magnet when the display stops flashing The display will initial...

Page 23: ...the RED LED will flash until an acceptable calibration has been carried out Unacceptable calibration levels will NOT be used TVOC will default to the previously stored acceptable calibration factor NO...

Page 24: ...Allen Key supplied within the Calibration tool kit Calibration tool kit part number A 849214 WARNING Failing to remove the locking screw before unscrewing the Sensor Cap will damage the sensor holder...

Page 25: ...nger contact with the PID Lamp window 6 Clean the PID Lamp using Alumina Powder loaded onto a cotton bud Rub the Cotton Bud Alumina power on the PID Lamp Window using a circular motion until a light a...

Page 26: ...8 Place the clean PID Lamp into the PID Cell avoiding finger contact with the Window 9 Refit the Electrode Stack with the electrical pin holes and electrode wire racing down 10 Refit the Metal Spring...

Page 27: ...not For Intrinsically Safe IS applications the unit must be inspected and have the fuse replaced by Ion Science Ltd or an Ion Science Approved Service Centre The intrinsically safe rating is not main...

Page 28: ...ot be an issue The instrument needs to be left on for a few cycles to see if the lamp strikes on its own If F1 is still on screen after 5 minutes then look at the information below The first thing to...

Page 29: ...m remains after the instrument has completed a few minutes of run cycles and the cable has been checked Or alternatively if the problem remains after you have tried replacement parts _________________...

Page 30: ...xed bump adaptor Replaces the standard Sensor Cap Allows an external pip connection 849217 PID Lamp cleaning kit Alumina powder and cotton buds A 31063 Span Gas kit 100ppm 100ppm Isobutylene 103Liters...

Page 31: ...ATEX IS approved applications Ask your installation engineers for installation and application advice Manufacturer Manufacturers part number Pepperl Fuchs Z715 MTL 7715P Stahl 9901 01 158 270 101 Pepp...

Page 32: ...Software TVOC V2 2 Diagram 5 2 1 updated on page 11 31 3 08 V3 09 N A TVOC 2 3 Diagram updated on page 15 21 4 08 V3 09 N A TVOC 2 4 Declaration on conformity change only 27 11 08 V3 09 N A TVOC 2 5 L...

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