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Summary of Contents for ion science TVOC
- Page 1 TVOC User Manual V2.6 ______________________________________________ Part No 849215 www.ionscience.com...
- Page 2 TVOC MANUA L Ion Science Ltd Page 2 of 32...
- Page 3 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).
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Page 4: Table Of Contents
TVOC MANUA L Ion Science Ltd Contents Page Statements Introduction to TVOC Packing List TVOC Set up Selector pins Cy cle times Installation Location Mounting Cable requirements Power requirements Non Intrinsically Safe (IS) applications Intrinsically Safe (IS) applications. Initial calibration Operation . -
Page 5: Statements
TVOC detects a large range of gases, which are potentially dangerous from both a poisoning and/or an explosiv e perspecti v e. TVOC has a number of selectable features allowing the detector to be used in a v ariety of applications. Ion Science Ltd can accept no responsibility for the incorrect adjustment of features that cause harm or damage to persons or property . -
Page 6: Introduction To Tvoc
; and the duty cy cle time i.e. the frequency that the instrument tak es a measurement. Duty cy cles are explained in more detail in section 4, TVOC set up, and section 6 Operation. IMPORTA NT: if the 10ppm range is selected the TVO C will requi r e a calibration using 10ppm Isobuty lene before use. -
Page 7: Packing List
Contents should be carefull y remov ed and check ed against the pack ing list. A ny discrepancies between the contents and the pack i n g list must be reported to Ion Science Ltd within 10 day s of receipt of shipment. Ion Science cannot be held responsible for shortages not reported with in the peri o d. -
Page 8: Tvoc Setup
TVOC Setup 4.1 Selector Pins TVOC has a number of settings that can be selected by the user v ia a row of 4 selector pins mounted on the rev erse side of the main PCB. Diagram 4.1 shows the location of the functional selector pins labelled - A , B, C &... -
Page 9: Cy Cle Times
* Ensure static build up is discharged before touching components. 4.2 Duty Cycle The TVOC has a v ariable duty cycle whereby the lamp is ON for 5 seconds and then OFF for a user set period between 0 to 5 minutes in 1 second increments. The 4 20 mA output is updated at the end of each cycle. -
Page 10: Installation
Mount TVOC in an area that has good air circulation. Restricting natural air current may result in delay ed detection. · Nev er mount TVOC in direct sunlight or ov er a heat source such as a radiator. This may cause TVOC to exceed its certified work ing range. ·... -
Page 11: Mounting
Dimensions for mounting TVOC are gi v en in Diagram 5.2.1 below. Diagram 5.2.1 NOTE: The TVOC case can be used as a template when mark ing out fixing holes but do not drill through the fixing holes. Page 11 of 32... -
Page 12: Cable Requirements
Ion Science Ltd Installation 5.3 Cable requirements Ion Science Ltd suggests using screened cables for both power in and signal out. Cable screens must be terminated at the TVO C enclosure using EMC cable glands. 5.4 Power requirements 5.4.1 Non Intri n sically Safe (Non IS) applications: Input power 5 - 28Vdc. - Page 13 TVOC MANUA L Ion Science Ltd Installation 3 Wire Sy stem (b) !WARNING! Non Intrinsically Safe (Non IS) applications When the unit is installed with a non IS rated power suppl y the IS details on the front of the unit are not appropriate for the sy stem.
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Page 14: Intrinsically Safe (Is) Applications
TVOC fuses may not be replaced in the field. · If a fuse is blown TVOC will require inspection by Ion Science Ltd or and Ion Science A pprov ed Serv ice Centre before it is used in an IS application. - Page 15 TVOC MANUA L Ion Science Ltd 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 sensing (3 wire) Page 15 of 32...
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Page 16: Initial Calibration
TVOC is calibrated at Ion Science before dispatch using 100ppm Isobuty lene. Howev er if y ou wish to calibrate y our TVOC once it is installed Ion Science recommends that the TVOC is left to run on its chosen settings (see Section 4 TVO C Set up) for 24 hours before an initial calibration is carried out, to allow the instrument to settle into the work ing env ironment. -
Page 17: Operation
Operation 6.1 Start Up A fter electrical power is connected, TVOC runs through a Start up routine, which lasts for approximately 1 minute. During this Start up routine TVOC demonstrates the following characteristics: * The LCD screen display s the software v ersion number... -
Page 18: Led S
Please see Section 7 Calibration for YELLOW LED status. 6.4 Selector pins TVOC has a range of options that are selected v ia the selector pins on the back of the main PCB (please see Section 4 TVOC Set up). -
Page 19: Calibration Mode
1 cm once a change has occurred. 6.6 Calibration gases TVOC has three (3) ranges that can be selected howev er the 0-10ppm range requires the instrument is calibrated by the user before use. The 0-100ppm and the 0-1000ppm ranges can initially run using the... -
Page 20: Calibration
Calibration 7.1 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 work ing to specification. NOTE: Please read this entire calibration procedure before attempting a calibration. -
Page 21: Setting The Zero
The carbon filter should be attached to the hand aspirator. A gain place the calibration magnet ov er the logo. The ZERO LED will flash, during this stage TVOC display s a direct miliv olt (mV) output from the PID sensor. -
Page 22: Setting The Gas Tolerance
Luer fitting; onl y a ¼ turn is required. Switch on the gas suppl y and then place the magnet ov er the logo. The SPAN LED will flash and TVOC will display the direct milliv olt (mV) output from the PID sensor. Now remov e the magnet. -
Page 23: Display Lamp Life
NOTE: A lway s check the accuracy of y our calibration by check ing readings from TVOC when it is running normally using the ZERO filter and SPA N gas. A ccuracy of calibration is the responsibility of the person carry ing out the calibration. If in doubt seek adv ice. -
Page 24: Maintenance
TVOC MANUA L Ion Science Ltd Maintenance Cleaning / replacing the la mp TVOC has been designed to ensure serv icing is quick and easy: 1. Before serv icing TVOC, disconnect the electrical power suppl y . 2.Remov e the Lock ing Screw... - Page 25 TVOC MANUA L Ion Science Ltd Maintenance 5. The PID Cell s Metal Spring Cov er can be pulled off using moderate force. The Electrode Stack and PID Lamp can then be remov ed Electrode by holding the PID Cell Stack upside down.
- Page 26 WARNING: Irreparable damage will be caused by forcing the PID into the Sensor Holder if not correctly aligned. NOTE: A lway s calibrate TVOC after serv icing is carried out. Page 26 of 32...
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Page 27: Fuse Rupture And Replacement
For Intrinsically Safe (IS) applications the unit must be inspected and hav e the fuse replaced by Ion Science Ltd or an Ion Science A pprov ed Serv i c e Centre. The intrinsically safe rating is not maintained if the fuse is simply replaced. -
Page 28: Diagnostics
TVOC MANUA L Ion Science Ltd Diagnostics Below are two conditions your TVOC can be in when it is working correctly: The two conditions shown below are of the instrume nt 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 29 If you do not hav e any spare pellets, lamps or PID cells then you will need to contact Ion Science for some assistance if the problem remains after the in strument has completed a few minutes of run cycles and the cable has been check ed.
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Page 30: Spare Parts
TVOC MANUA L Ion Science Ltd Spare parts Part Description Part number Calibration tool k it Calibration magnet, Calibration adaptor, Calibration connector, Zero gas aspirator, Carbon filter, 2 x A llen k ey s. A -849214 Flow adaptor Replaces the standard Sensor Cap... -
Page 31: Technical Specifications
For information onl y please see A TEX certificate before installation Zener Barriers: Ion Science Ltd suggest using the followi n g Zener Barriers for A TEX / IS approv ed applications. A sk your installation engineers for installation and application adv ice. - Page 32 TVOC MANUA L Ion Science Ltd Update Log Manual Version A mendment Date updated Instrument PC Software Firmware TVOC V2.2 Diagram 5.2.1 31/3/08 V3.09 updated on page 11 TVOC 2.3 Diagram 21/4/08 V3.09 updated on page 15 TVOC 2.4 Declaration on 27/11/08 V3.09...
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