World leader in sampling technologies SKC Ltd 11 Sunrise Park, Higher Shaftesbury Road Blandford Forum, Dorset f: 01258 450968 DT118ST e: info@skcltd.
CONTACT NUMBERS for SKC Ltd Tel: 44 (0) 1258 480188 Fax: 44 (0) 1258 480968 Web: http://www.skcltd.com Keep a record of your equipment history in the space provided Model Serial number Date of purchase Recalibration record year 05 06 07 08 09 10 11 12 13 14 15 month day This manual is for Split2 units supplied after September 2004 Copyright SKC Ltd 2004.
SKC Ltd 11 Sunrise Park, Higher Shaftesbury Road FM 24816 Blandford Forum, Dorset f: 01258 450968 DT118ST e: info@skcltd.com CONTENTS INTRODUCTION .................................................................................. 4 APPLICATIONS ................................................................................... 4 DIAGRAMS AND PARTS LIST OF THE SPLIT2 ................................ 5 BATTERY DETAILS, CLEANING OPTICS, SOFTWARE ................... 6 SPECIFICATIONS .....................
INTRODUCTION The SPLIT2 uses the principle of near-forward light scattering of an infrared radiation to immediately and continuously measure the concentration in mg/m3 of airborne dust particles. It can be used as a passive monitor or by connecting a sampling pump such as the SKC Sidekick, an active monitor. • This principle utilizes an infrared light source positioned at a 90 degree angle from a photodetector. • As the airborne particles enter the infrared beam, they scatter the light.
DIAGRAMS AND PARTS LIST Please unpack your new SPLIT2 and ensure that your kit is complete. 3 4 5 SPLIT2 unit in carry pouch, with detachable strap Detachable sensor on a ‘curly’ cable, with IOM body, and complete IOM cassette.
BATTERY AND OPTIC MAINTENANCE Battery Relacement & charging This instrument operates on a rechargeable NiMH battery pack. This is recharged while in the unit, using the jack socket and charger supplied. Should it be necessary to replace the battery pack, it is located in the side panel. Please note that the battery charger provided is not recommended for use as a mains adaptor. The SPLIT2 has a Lithium battery back up for data retention even if the main batteries are exhausted or not fitted.
SPECIFICATION Calibration Accuracy Precision Sensing range Particle size ranges Recording time Memory Locations Data display Output Operating temperature Humidity range Battery Battery life Size Weight Software Flow rate Optional Sampling Pump NIOSH 0600 with ARD + 10% 0.02 mg/m3 0.01 to 200 mg/m3 0.1 to 10 micron Respirable (Use IOM and selective foam) 0.1 to 50 micron Thoracic (Use IOM and selective foam) 0.
BEFORE YOU START! The following conditions must be met BEFORE starting a sampling process Whether PASSIVE or PUMPED sampling will be used? If Passive Mode is chosen the following should be noted: In the passive mode the SPLIT2 is used without any inlets or a filter cassette on the sensing head (see page 11 for details). This mode means the instrument relies on the NIOSH 0600 method of calibration.
INITIAL SETTING UP OF THE SPLIT2 Attach the sensor. Activate the keypad using the manual on/off switch on the side. Switch the unit on using the I/O button. The LCD will show the screen below and a ‘beep’ heard. (To turn the instrument off please hit the I/O button again) ** SPLIT2 ** Real-Time Dust Monitor SKC Ltd V3.
INITIAL SETTING UP OF THE SPLIT2 The following screen will appear with a cursor (line) under the 0 character Cursor Time: Date: Day: 0 : _ _ The TIME is configured as a 24 hour clock in hours/minutes/seconds. The date is configured as day/month/year. The day is by accepted abbreviation e.g MON To set all parameters on this screen the following procedure applies: To increase the value of the selected digit... Press the UP button. To decrease the value of the selected digit ....
PASSIVE OR PUMPED? There are two modes in which the SPLIT2 can be used: PASSIVE or PUMPED. PLEASE NOTE: Go to the section on Sampling (p14) before attempting to use the SPLIT2 in the Pumped mode. To use in the passive mode the sensing head must be configured without any inlets or filter cassettes. The sensor must be mounted ‘across’ the back plate in order to allow air movement through it. See the picture opposite.
PREPARING TO TAKE A SAMPLE If PUMPED mode is chosen the following should be observed: 1. The correct particle size must be selected 2. The correct sampling inlet must be attached 3. The correct date and time must be set if not done already in the INITIAL SETTING UP, see page 10 4. The Auto - Zero process must be completed 5. The Alarm level must be set, if sampling with the alarm feature. 1.
PREPARING TO TAKE A SAMPLE The correct inlet must now be fitted as shown below: Cassette grid Filter Filter ring already comes ATTACHED to sensor Rubber sealing ring Optional Foam Insert None for Inhalable, BLACK for Thoracic,. WHITE for Respirable IOM Cassette Front ONLY Front plate SPLIT2 Sensor 3. Setting the time and date: See page 10. 4. Doing an Auto-Zero Before using the SPLIT2 to do an actual sample an AUTO-ZERO must be performed.
PREPARING TO TAKE A SAMPLE The Split2 is now Auto - Zeroing. The time in seconds will appear in the bottom right hand corner of the LCD indicating how long for the Auto - Zero to be completed. Auto - Zeroing Please Wait 24 Once completed the SPLIT2 will return to the main menu Run Review Data Special Functions Auto-Zero 5. Setting the Alarm: Go to the main menu screen.
PREPARING TO TAKE A SAMPLE Setting the Sample Rate: Go to the Special Functions option by pressing either the down button or the up button until the arrow is opposite Special Functions. Press ENTER button Scroll arrow to System Options and press the ENTER button Scroll arrow to Sample Rate option and press the ENTER button Scroll arrow to sample rate required and press the ENTER button.
TAKING A SAMPLE Monitoring Dust Concentrations with the SPLIT2 Once all the preparations have been carried out and the SPLIT2 set up to the correct mode and dust fraction to be monitored, we can start taking samples. Go to the main menu and by pressing either the down button or the up button position the arrow opposite RUN. Press the ENTER button Run Review Data Special Functions Auto Zero Scroll arrow to type of run you want and press the ENTER button.
REVIEWING DATA The Run screen display: Run and Alarm (Alm) Overwrite: To erase all previously recorded data in all locations select either of the OVERWRITE options. Scroll arrow to Yes and press the ENTER button. The new data will be logged in Tag 1 (memory location 1) A new screen will appear for a few seconds stating ‘Preparing Compensation’.
DOWNLOADING TO A PC Once the Tag has been selected and the ENTER button pressed you may see a screen stating ‘SCANNING MEMORY’ for a time. This will change to the first of 5 information screens. The first screen shows the Start and Stop time, date and Tag number. Press the DOWN arrow to display the next screen, which will detail the MAXIMUM Concentration in mg/m3. Press the DOWN arrow again for the next screen which will detail the MINIMUM concentration in mg/m3.
DUST FRACTION CORRECTION 1. Dust Fraction correction on the SPLIT2 Before a SCALE factor can be entered, a gravimetric result must be obtained from the filter contained behind the sensing head. The filter must be preweighed. Go to the Special Functions option by pressing either the down button or the up button until the arrow is opposite Special Functions.
CALCULATING THE SCALE How to calculate the SCALE factor: Help requested with SCALE factors: The TWA result obtained from the filter used during a monitoring exercise is compared against the TWA displayed by the SPLIT2 LCD in the REVIEW DATA option (see page 17). As you note down your correction factors using the table below you are recording actual work place situations and exposures. In order to build up information on these factors we would very much appreciate feed back from you on your results.
SPAN CHECK USING THE CALIBRATION POST Span Check Span Check correction: Span checks should be performed once per month, but if the instrument has been dropped or knocked, a span check should be carried out immediately. After a Span Check you find the displayed value to be greater than +10%. To correct for the difference use the following calculation. The SPLIT2 MUST be reset to its defaults. You must then perform the Auto-Zero sequence, see page 13.
TEMPERATURE CHANGES This section is IMPORTANT as it covers the procedure involved to ensure the reliability and accuracy of your unit is optimised despite the often unavoidable changes in temperature. Drastic changes in the environment temperature could affect the readings from the Split2. Temperature changes can occur, for example, when transferring between indoor and outdoor monitoring, or if the unit has been stored overnight in a cold room or vehicle, before being used in a warm room.
SPECIALISTS IN AIR SAMPLING SAMPLING PUMPS APPLICATION SPECIFIC SAMPLE PUMP KITS COSHH OR ENVIRONMENTAL SAMPLING NOISE MONITORS TEMPERATURE, LIGHT, WORKPLACE LIGHT - NOISE - TEMPERATURE SORBENT TUBES PASSIVE BADGES PASSIVE OR ACTIVE SAMPLE MEDIA SKC Ltd 11 Sunrise Park, Higher Shaftesbury Road Blandford Forum, Dorset f: 01258 450968 DT118ST e: info@skcltd.
