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Summary of Contents for ion science TVOC
- Page 1 TVOC Instrument User Manual V4.5 Unrivalled Detection. www.ionscience.com Part number: 849215...
- Page 2 Thank you for purchasing your Ion Science instrument. The standard warranty of your instrument can be extended to up to five years on PhoCheck Tiger and two years on other Ion Science instruments. To receive your extended warranty, you must register your instrument online within one month of purchase ( terms and conditions apply.)
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Page 3: Declaration Of Conformity
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. -
Page 4: Table Of Contents
Introduction to TVOC ............................6 Packing list ..............................8 Standard TVOC instrument ........................... 8 TVOC Calibration Tool Kit ..........................8 TVOC setup ..............................9 Selector Pins ..............................9 Duty Cycle ..............................10 ... -
Page 5: Statements
It is provided "as is" and without any representation, term, condition or warranty of any kind, either express or implied. To the extent permitted by law, Ion Science shall not be liable to any person or entity for any loss or damage which may arise from the use of this manual. We reserve the right at any time and without any notice to remove, amend or vary any of the content which appears herein. -
Page 6: Introduction To Tvoc
Signal update 60 seconds TVOC gives a continuous 4-20 mA output which can be integrated into a DCS control system to give an indication of VOC levels in the operating environment. Note the 4-20 mA output must be externally powered with 8-35 V. - Page 7 TVOC Intrinsically safe certificate for further details. The TVOC safety rating permits its deployment in all hazardous areas of the quoted (or less demanding) rating. For detail please refer to the marking on your instrument (found on the front main label). As of 1 October units will be manufactured with two protection concepts applied by separate certifications.
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Page 8: Packing List
Contents should be carefully removed and checked against the packing list. Any discrepancies between the contents and the packing list must be reported to Ion Science Ltd within ten days of receipt of shipment. Ion Science cannot be held responsible for shortages not reported with in the period. -
Page 9: Tvoc Setup
TVOC setup Selector Pins TVOC has a number of settings that can be selected by the user via a row of four selector pins mounted on the reverse side of the main PCB. Diagram 2 shows the location of the functional selector pins labelled - A, B, C &... -
Page 10: Duty Cycle
Fast response mode The TVOC can be set to Fast Response Mode, when selected the TVOC will update the output every one second. Fast response mode can be selected by setting both the seconds and minutes to zero. -
Page 11: Installation
TVOC must be mounted vertically with the sensor underneath the case. This avoids dust and debris • blocking the access to the detector cell. If possible, mount TVOC near the ceiling to target VOC gases that are lighter than air or just above • floor level to detect VOC gases that are heavier than air. -
Page 12: Dimensions For Mounting
TVOC MANUAL Ion Science Ltd Installation Dimensions for mounting Diagram 5 Unrivalled Detection. www.ionscience.com Page 12 of 32... -
Page 13: Power Requirements
TVOC MANUAL Ion Science Ltd Installation NOTE: The TVOC case can be used as a template when marking out fixing holes but do not drill through the fixing holes. Power requirements Non Intrinsically Safe Operation applications: Input power 5-28 Vdc. 80 mA max. (0.5 to 2.5 mm C.S.A.) - Page 14 Units should not be powered using non IS power supplies prior to installation in an IS application. • If non IS power is supplied the unit will require inspection by Ion Science Ltd or an Ion Science Approved • Service Centre prior to installation in an IS application.
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Page 15: Initial Calibration
TVOC is calibrated at Ion Science before dispatch using 100 ppm Isobutylene. However, if you wish to calibrate your TVOC after installation, Ion Science recommends that the TVOC is left to run on its chosen settings (see ‘TVOC Setup Section’) for 24 hours before an initial calibration is carried out, to allow the instrument to stabilise. -
Page 16: Operation
(See the calibration section of this manual) During this ‘Start-up’ time the user can adjust the Duty Cycle time as referred to in ‘TVOC Setup’ under the Duty Cycle section. This time can be adjusted from 0 to 5 minutes in 10 second increments. -
Page 17: Led's
Please see Section 7 Calibration for YELLOW LED status. Selector pins TVOC has a range of options that are selected via the selector pins on the back of the main PCB (please see the ‘TVOC Set up’ Section). The options are shown below with the defaults highlighted in bold: 1-1000 ppm 0.01 –... -
Page 18: Calibration Routine
Calibration Calibration routine Ion Science recommends calibrating TVOC after any maintenance or lamp cleaning is carried out and on a 3 monthly basis to ensure TVOC is working to specification. NOTE: Please read this entire calibration procedure before attempting a calibration. -
Page 19: Setting The Gas Concentration (The Actual Value That The Calibration Has Been Supplied At)
Luer fitting; only a one quarter turn is required. Switch on the gas supply and then place the magnet over the logo. The SPAN LED will flash and TVOC will display the direct millivolt (mV) output from the PID sensor. Now remove the magnet. - Page 20 Yellow span LED will be illuminated to indicate the failure to calibrate the span. Now place the magnet over the logo corner to return to normal monitoring routine. The GREEN LED will start flashing as TVOC starts its cycle with a lamp ON cycle. IMPOTANT: Unacceptable calibration levels will not be adopted;...
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Page 21: Maintenance
TVOC MANUAL Ion Science Ltd Maintenance Cleaning / replacing the lamp TVOC has been designed to ensure servicing is quick and easy: 1. Before servicing TVOC, disconnect the electrical power supply. 2. Remove the locking screw from the metal sensor cap using the Allen key supplied within the Calibration tool kit. - Page 22 TVOC MANUAL Ion Science Ltd Maintenance 5. The PID sensor’s metal spring cover can be pulled off using moderate force. The electrode stack and PID lamp can then be removed by holding the PID sensor upside Electrode down. stack Warning:...
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Page 23: Fuse Rupture And Replacement
(IS) or not. For 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 maintained if the fuse is simply replaced. -
Page 24: System Recommendations
Gas sample systems It is sometimes necessary to pump or draw a gas sample past the TVOC. For this a “Flow Adaptor " can be fitted. The flow adaptor has an inlet and an outlet port so that gas may be pushed or drawn across the sensor. - Page 25 2. The pressure difference of a pumped system relative to atmosphere should be minimised to avoid the effects of gas law. 3. The maximum pressure that can be applied to the TVOC sensor housing is 300 mbar. However this is not a recommended working pressure. Ideally working pressure should be +/- 30 mBar relative to ambient pressure.
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Page 26: Instrument Warranty And Service
Service Ion Science is pleased to offer a number of service options on our TVOC product range that allow you to choose the instrument cover that best suits your needs. At Ion Science we recommend that all of our gas detection instruments be returned for service and factory calibration once every 12 months. -
Page 27: Diagnostics
TVOC MANUAL Ion Science Ltd Diagnostics Below are two conditions your TVOC can be in when it is working correctly: Diagram 25 Diagram 26 The two conditions shown below are of the instrument in an error state with potential checks/cures for these faults: If an F1 error occurs when the instrument is first switched on there may not be an issue. -
Page 28: F4 Errors
The F2 error occurs when the lamp appears to be illuminated yet power is removed from the PID sensor, TVOC checks the PID lamp status using a light sensor. Running TVOC with the sensor or the sensor cap removed will result in an F2 error. - Page 29 TVOC MANUAL Ion Science Ltd Spare parts Part Description Part number Calibration tool kit Calibration magnet, Calibration adaptor, Calibration connector, Zero gas aspirator, Carbon filter, 2 x Allen keys. A-849214 Flow adaptor Replaces the standard Sensor Cap (Allows an external pump to be fitted as...
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Page 30: Technical Specifications
7 Segment, 4 Digit LCD. 4 Colour LED’s Response Sensor T90 < 5sec TVOC output update: Variable 1 second to 10 minutes Accuracy 0 to 100 ppm: +/- 1 ppm (whichever is greater) 100 to 1000 ppm: +/- 10% or +/- 10 ppm (whichever is greater) Linearity 0 –... -
Page 31: Manual Log
V3.09 V2.4 TVOC Manual Diagnostics added and P&F 20/02/09 V3.09 V2.5 barrier changed TVOC Manual TVOC firmware modified to 22/07/09 V3.10 V2.6 allow customers to calibrate using an alternative concentration. Aldo improved the description of the F2 fault condition. (P6,... - Page 32 TVOC MANUAL Ion Science Ltd Manual log TVOC Manual Barrier details removed for 14/01/2011 V3.25 V3.5 technical specification, notes added that 4-20mA requires external power TVOC Manual Pages 3&4 updated to 23/03/11 V3.27 V3.6 correct Quality Management System Page 5 Responsibility of use...
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