IGD TOC-750S-CO Page 12 Operation Manual Download

Page: 12 / 13

Doc Ref: SL-065 v1.2 pg 12

Calibration

Zero

Gas

Zero and Calibration

The following diagram shows the preferred method to
introduce zero and calibration gases to the sampler.

The sampler must not be over or under pressurised
during the zero or calibration process.

With this arrangement set the ﬂow rate from the gas
cylinder such that the ﬂowmeter shows 0.5L/Min of gas
ﬂow spilling oﬀ.

This arrangement allows the sampler to take its required
ﬂow rate at close to atmospheric conditions allowing
excess gas to spill oﬀ.

Always zero ﬁrst and then calibrate.

With the Android device
connected to the sampler
comm port as previously
indicated select the Zero/Cal
option

Summary of Contents for TOC-750S-CO

Page 1: ...Addressable 2 Wire Document Ref SL 065 v1 2 Operation Manual Sampler Module FS646773 EMS696504 Triton House Crosby Street Stockport SK2 6SH internationalgasdetectors com 44 0 161 483 1415 sales intern...

Page 2: ...e TOC 750S CO TOC 750S CO2 TOC 750S FIL TOC 750S H2 TOC 750S IRF TOC 750S N20 TOC 750S NH3 TOC 750S O2 TOC 750S PN1 TOC 750S TBE TOC 750S PN2 TOC 750S CBF TOC 750S SLF TOC 750S PCF TOC 750S INF Descri...

Page 3: ...t Active Zero Filter Physical Details Sample and exhaust ports suit 6mm OD x 4mm ID Soft tubing IGD Part Number TOC 750S TBE supplied as 20M coils Samplers are designed for ambient sampling only Only...

Page 4: ...minated and cables are stripped to the enclosed guide See Cable Calculator for Cable Core Size vs Distance VS Number of Devices Cable Screen or Drain Wire Tubing 6 x 4 Polyurethane Other Tube Options...

Page 5: ...e limited or the nature of the environment may prohibit In this case the lter can be tted at a convenient position in the tube run as close to the end of the sample line as possible to protect as much...

Page 6: ...ise for suitable lters to match the environmental condition Optional Protection Filter Note these are advised to suit the application consult IGD for further details Where termination is required thro...

Page 7: ...rs to remove any traces of the target gas from the zero air stream For example Ammonia LPG Fit activated Carbon Filter PN TOC 750S CBF CO2 t Soda Lime Filter Part Number TOC 750S SLF For Oxygen detect...

Page 8: ...ptions are active and which of those options are communicating see previous section on Module Indications 00 08 16 24 01 09 17 25 02 10 18 26 03 11 19 27 04 12 20 28 05 13 21 29 06 14 22 30 07 15 23 3...

Page 9: ...ion using IGD s interface cable as indicated below Apps can be downloaded from the App store Interface Cable PN TOC CBL SET NOTE When undertaking work with a connected tablet ensure the system control...

Page 10: ...cked For example with new internal and EOL lters tted the running pressure is 990mBar With lters removed the running pressure is 1002 mBar So the lters and sample line impose a 12mBar pressure drop Th...

Page 11: ...he sample pump purge time expires Note 1 Most detectors can be set to auto zero Ensure either an appropriate scrubber is tted to the zero port or the zero port is tubed away to a clean air location Do...

Page 12: ...ring the zero or calibration process With this arrangement set the ow rate from the gas cylinder such that the owmeter shows 0 5L Min of gas ow spilling o This arrangement allows the sampler to take i...

Page 13: ...o zero the detector Now apply calibration gas as indicated The graph should show the signal rise as the detector responds to gas and gives a visual indication to show when the reading has stabilised O...