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1. Safety 

1.1. Safety 

Indicators 

This manual uses a 

CAUTION 

and a 

WARNING

 indication.  

Familiarize yourself with the following definitions for the meanings of these indicators.  

CAUTION

 indicates a hazard and calls attention to a procedure that if not correctly 

followed could result in damage to the instrument. Do not proceed beyond a caution 
indicator without understanding the hazard.  

WARNING

 indicates a hazard to you and calls attention to a procedure that if no 

correctly followed could result in injury or even death. Do not proceed beyond a warning 
without understanding the hazard. 

Page 6 of 18 

GT-321 Operation Manual 

GT-321-9800 Rev D.doc 

AC Tool Supply

877-207-1244

www.aikencolon.com

Summary of Contents for GT-321

Page 1: ...GT 321 HAND HELD PARTICLE COUNTER OPERATION MANUAL GT 321 9800 Rev D doc AC Tool Supply 877 207 1244 www aikencolon com...

Page 2: ...e Instruments Inc Technical Support Should you require support please consult your printed documentation to resolve your problem If you are still experiencing difficulty you may contact a Technical Se...

Page 3: ...nce of procedures other than those specified herein may result in hazardous radiation exposure WARNING This product when properly installed and operated is considered a Class I laser product Class I p...

Page 4: ...ll be warranted to the extent and in the manner warranted by the manufacturer of that product Any product found to be defective during the warranty period will at the expense of Met One Instruments In...

Page 5: ...eration 11 4 1 Iso kinetic Sampling 11 4 2 Taking a Sample 11 5 Maintenance 12 5 1 Service Schedule 12 5 2 Service Schedule Table 12 5 3 Battery Pack 13 5 4 Zero Test 13 5 5 Flow Rate Test 14 5 6 Disp...

Page 6: ...t correctly followed could result in damage to the instrument Do not proceed beyond a caution indicator without understanding the hazard A WARNING indicates a hazard to you and calls attention to a pr...

Page 7: ...ewdriver 4 Iso kinetic Sample Probe with a short piece of tubing 5 Zero Particulate Filter Met One Part Number G3111 6 Universal AC to DC converter module with IEC AC power cord 7 RS 232 Serial Cable...

Page 8: ...batteries Iso kinetic Filter Reduces count errors due to mismatched sample flow velocity Display Adjust Adjusts the LCD display contrast Section 5 6 Flow Adjust Adjusts the flow rate of the unit Secti...

Page 9: ...m the 10 samples are then averaged and displayed This finishes the test run Always remember to turn the power off when not in use to conserve battery power The GT 321 is now checked out and ready for...

Page 10: ...trol Ventilation Systems Filter Testing Laboratory and Manufacturing Environments Concerned citizen groups that want to do their own air quality studies Hospitals and nursing homes Efficiency testing...

Page 11: ...be aware that not all contamination problems are continuous some are the result of a short term event or burst of particles Locating the source will require taking a number of samples in the same spo...

Page 12: ...to the inside of the GT 321 and a factory authorized person must do this Contact Met One Instruments for service information Calibrating particle sensors like the one in the GT 321 requires specialize...

Page 13: ...used powered by its battery pack on a daily basis connect the charger after each day of usage It will not damage the battery pack to leave it connected to the charger for long periods When the GT 321...

Page 14: ...m ID tubing Tygon tubing is a good choice Turn on the GT 321 and note the flow meter reading The flow rate should be 0 10cfm 5 The flow rate can be adjusted by a trim pot located in one of the two acc...

Page 15: ...onnector or defective component inside Send to service center Sample result remains at zero after sampling 1 Pump stopped 2 Laser diode bad 1 Send to service center 2 Send to service center Sample res...

Page 16: ...ter Enable Automatic Records Output a record after each count cycle L Send last record Output the data from the last count cycle Display Commands Output the help menu Example Record CSV Comma Separate...

Page 17: ...Flow rate 0 10 cfm 2 831 lpm Display 16 character LCD Power 6 V NiCd battery pack Charger AC to DC module 9 V 350 mA Operating Temperature 0 to 50 C Storage Temperature 20 C to 60 C Size L 15 9 cm W...

Page 18: ...bers GT 321 GT 321 1 GT 331 GT 521 Product Options All Are in compliance with the following documents EMC Emissions CISPR 11 1990 EN 61326 1 Immunity EN50082 1 EN 61326 1 Tom Pottberg President Januar...

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