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D e t e c t i o n

User Manual 

Multi-Gas detector POLI

D e t e c t i o n

17

4.4.1.4 PTFE CONNECTING TUBING FOR REACTIVE GASES

For reactive gases including ozone, chlorine, chlorine dioxide, hydrochloric acid, hydrofl uoric acid, 
and absorbable gases such as most VOCs, it is critical to use inert connecting tubing such as WatchGas 
Last-o-more hose and make connections as short as practical. More fl exible variants such as PTFE-lined 
Norprene or PTFE-lined Tygon are suitable alternatives. For most other gases, including standard 4-gas 
mixes with carbon monoxide, hydrogen sulfi de and methane, other tubing can be used.

4.4.1.5 OTHER ATTACHMENTS

It is always most accurate to calibrate the POLI with all attachments in place in the same manner as 
in the fi eld measurements. For example, normally a fi lter should be used on the POLI inlet for both 
measurements and calibration. However, if a fi lter is not used during measurement (as preferred 
in a few cases of highly reactive gases) then no fi lter should be used during calibration. Similarly, if 
extension tubing is being used during sampling, a more accurate calibration is obtained if the tubing 
is also attached during calibration. This method accounts for any small changes made to the gas 
concentration by the attachment(s).

4.4.2 FRESH AIR (ZERO) CALIBRATION

Zero calibration should precede span calibration and be done in clean air with 20.9% oxygen. This 
procedure determines the zero points of most sensors and the span calibration for the oxygen sensor. 
No gas connections are required if the ambient air contains no detectable contaminants.

In Confi guration Mode, enter the Calibration menu and select ‘Fresh Air Calib’ to show the selected 
sensor list. De-select any sensor(s) not wanted to be zeroed ([ / ](Change)). Start the zero calibration 
by pressing [+/OK] ‘ ’ to initiate the 30-second zero calibration count-down.

NOTE: The POLI also off ers the option for a zero calibration every time the instrument is powerd on. 
Select the Zero at Start option in WatchGas Suite

Diff usion Instruments
Diff usion instruments have a black cap covering the Luer connector to protect the unit from dirt and 
moisture. This cap must be removed to attach the Luer fi tting and connected tubing leading to the 
gas supply. (Internal channels distribute the gas to each sensor, even though during measurements 
the gas enters and leaves through the four fi lters on the face of the POLI.) The gas fl ow should be low, 
between 0.2 and 0.3 LPM to avoid pressure build-up in the sensor channels. Do not use a T-connector 
or demand-fl ow regulator with diff usion sampling.

Summary of Contents for POLI

Page 1: ...www watchgas eu POLI Multi Gas Detector User Manual D e t e c t i o n...

Page 2: ...4 Pump Status 9 3 5 Alarm Testing 10 3 6 Main User Menu 10 4 Configuration Mode 11 4 1 Entering Configuration Mode 11 4 2 Exiting Configuration Mode 11 4 3 Navigating Configuration Mode to Edit Param...

Page 3: ...de MAIN FEATURES 4 models of diffusion pumped and wireless optimized for basic confined space entry CSE compliance professional and advanced applications Large graphical display and icon driven user i...

Page 4: ...s may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference t...

Page 5: ...y the WatchGas USB Charger NOTE Any USB A to Micro B USB cable works for partial charging but does not work for communication with WatchGas Suite configuration and data transfer software The WatchGas...

Page 6: ...to fully charge the POLI before each use 1 3 BATTERY REPLACEMENT The POLI Lithium ion battery pack is free of maintenance In case of a battery failure or end of operating life please contact the Watch...

Page 7: ...ngs sensor types datalog battery pump wireless status and others 2 2 STATUS INDICATOR ICONS Along the top of most screens are status icons that indicate whether a function is operating and or its stre...

Page 8: ...left key 3 Basic Operation 3 1 TURNING ON Press and hold the Key for 3 seconds until the buzzer beeps and the red LED turns on As the unit is powers on it will display information such as WatchGas lo...

Page 9: ...llows use of anywhere between one and five sensors the latter with a dual toxic sensor When one or more sensors is either not installed or turned off the display only shows the installed active sensor...

Page 10: ...user menu in the reading mode is simple to go through using the and OK keys The information sequence is shown below The Peak Minimum STEL and TWA for each sensor since turn on are displayed with the...

Page 11: ...After entering Config Mode the calibration menu is displayed first Press to step through the menus and OK Enter to enter a menu to edit the parameters in its submenu OK 4 Configuration Mode The Confi...

Page 12: ...Unit TWA Limit Exit Temperature Unit Host Module ID Bump Test Exit Alarm Device Language Channel Set Span Value Heart Beat Light Back Light Mode Exit Set Span2 Val M D On Off LCD Auto Flip 3 Point Cal...

Page 13: ...2 Use OK to toggle the item checked or unchecked and 3 use the arrow to move to the next item or end of the list where Toggle changes to Finally 4 press OK to exit and 5 press OK again to save If Sav...

Page 14: ...enu to perform zero or span calibration for one or more sensors bump test the sensors and alarms for function and change the span gas concentration The POLI should be calibrated on the first day of us...

Page 15: ...the other is applied the sensor name alternates with a highlighted CAL or BUMP as shown below Calibration is also required if The sensor module has been replaced with one whose calibration is overdue...

Page 16: ...that the POLI pump withdraws These regulators cannot be used with diffusion instruments since they have no pump Gas Generators provide their own flow and are required for a few gases like ozone O3 an...

Page 17: ...his method accounts for any small changes made to the gas concentration by the attachment s 4 4 2 FRESH AIR ZERO CALIBRATION Zero calibration should precede span calibration and be done in clean air w...

Page 18: ...ogen count down time is 60 seconds Other inert gases such as argon or helium could also be used 4 4 4 SPAN CALIBRATION In Configuration Mode enter the Calibration menu and select Multi Span Depending...

Page 19: ...der The Bump Test lasts 30 seconds or as long as it takes to pass whichever is shorter It can be aborted at any time during the 30 seconds When the bump test is complete the Pass or Fail result is sho...

Page 20: ...ct and again to save and exit The Measurement Gas can also be set in WatchGas Suite see Section 5 4 5 3 SET CUSTOM CF In this menu the user can define up to 15 Custom Gas PID correction factors for co...

Page 21: ...from increasing to decreasing hold both keys down simultaneously for about 2 seconds until changes to 4 6 ALARM SETTINGS Use this menu to change alarm limits select alarm devices enable a heartbeat li...

Page 22: ...the Left key Clear Future versions of the POLI will allow connection to a wireless network for transmission of various alarms including Man Down to team mates supervisors or safety o cers on site or a...

Page 23: ...nds 4 7 DATALOG The instrument displays a floppy disk icon on the main screen to indicate that gas readings are being recorded in datalog The instrument stores the measured gas concentration for each...

Page 24: ...ves a small amount of power Operating in diffusion mode with the pump off gives somewhat longer response times than with the pump on There is almost no difference in sampling accuracy except that a hi...

Page 25: ...key is convenient because it does not scroll to another display but does test the alarms The backlight turns off automatically after 10 seconds if no key is pressed 4 8 7 LCD AUTO FLIP The LCD can be...

Page 26: ...tive in the MP400S and MP400H POLI models It is not included with MP400 or MP400P models An MP400H can communicate with 7 MP400S units up to 0 5 miles 0 8 km away forming an WatchGas Squad of up to 8...

Page 27: ...NVIRONMENTS Start WatchGas Suite on the PC and click the Search button to find the instrument Find the instrument in the left bar Device Connected list Click on the S N to get the configuration file f...

Page 28: ...is done under the User Gas tab Overwrite Custom Gas 1 User Gas 1 with the chemical name and press the Return key Enter the molecular weight m w and correction factors for a 10 6 eV PID lamp and for th...

Page 29: ...er the Datalog tab on the top of the screen Below is a sample screen of datalog information listing sample time and instantaneous readings A new Single Datalog file is created each time the instrument...

Page 30: ...nd create a file name Ensure that the POLI is connected and click Start to begin real time monitoring Select Stop when finished and Clear to discard the data when no longer needed The data should be a...

Page 31: ...clogged remove it by unscrewing it from the inlet Discard it and replace it with a new water trap filter Dirty filters can be recognized by symptoms such as Visible filter discoloration Frequent pump...

Page 32: ...instrument Remove the six screws in the back of the instrument Turn the instrument over lift off the front cover Carefully lift out each sensor you wish to inspect or replace Install the replacement s...

Page 33: ...s 31 0 85 01 87 709 Pump failed message Pump alarm Reasons Inlet probe blocked Direct connection to calibration gas outlet before the regulator is opened External filter plugged with dirt or liquid Wa...

Page 34: ...he Micro usb 1 2 If the STATUS LED 3 is off press Cal 5 until the led turns green 3 Push Cal 5 to initiate calibration The POLI LED 4 should blink green 4 If Calibration is successful POLI LED will be...

Page 35: ...r under the Datalog tab on the top of the screen Below is a sample screen showing a list of dates and times of the Cal Bump events Click on the event time to view the Cal Bump results in the right pan...

Page 36: ...D e t e c t i o n POLI Multi Gas Detector User Manual D e t e c t i o n 36 POLI Calibration Certificate Generated using MonoDock...

Page 37: ...eature Calibration 2 point calibration zero and span Power on zero calibration with user confirmation Multi Dock allows automatic bump test and calibration on up to 4 units simultaneously Data log Con...

Page 38: ...by fire lightening water damage or other hazard voids liability of the manufacturer In the event that a product should fail to perform up to manufacturer specifications during the appli cable warranty...

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