Bubble Buster User Instructions - J
Contents
1. J KEM Scientific Inc KEM Scientific Inc 6970 Olive Blvd Instruments for Science from Scientists St Louis MO 63130 314 863 5536 Fax 314 863 6070 E Mail jkem911 jkem com Bubble Buster User Instructions The Bubble Buster is designed to turn any piece of electrical equipment such as a HPLC pump valve or digital I O lines OFF or ON when air is detected in a piece of transparent tubing Among other uses the Bubble Buster can be used to turn off HPLC systems when they run out of solvent or turn on a pump to refill a solvent reservoir for column chromatography For computer controlled solvent monitoring systems the Bubble Buster can be modified to indicate in which of 4 solvent lines air was detected For the Bubble Buster to work you need to do 4 things 1 Connect the monitor head to the Bubble Buster 2 Connect the monitor head to the desired tubing 3 Set the trigger mode for either one shot or timed reset mode 4 Electrically connect the piece of equipment you want to control to the Bubble Buster Connect the Monitor Head Two styles of monitor heads are available the HPLC Head which monitors up to 4 HPLC solvent lines simultaneously and aaoi the Single Line Monitor Head that monitors a single solvent line ea of varying diameters Each head connects to the 6 pin connector l ont on back of the Bubble Buster og HPLC Head Level Head L N O L N C L COM Head Style Switch2. C Ifa contact opening is needed use the red and white wires Ifthe HPLC system isn t equipped with remote stop plug the HPLC system or pumps into the 120 volt outlet on back of the Bubble Buster and set the When triggered turn outlet switch to the OFF position To verify correct operation of the Bubble Buster fill all solvent lines then press the reset button on the Bubble Buster s front panel The HPLC system should work normally Now introduce a bubble into any of the solvent lines When the bubble reaches the detection head the red trouble indicator on the Bubble Buster s front panel lights and the HPLC system turns off Solvent Line Monitor Switch Switch 1 2 Unscrew the detector head and position the solvent line in the V of the detection head Position the detection head in an area where it won t be frequently hit so as to minimize false triggering To test the action of the Bubble Buster fill the tube with liquid then press the reset switch on the front panel of the Bubble Buster Now introduce a bubble into the tubing When the bubble reaches the detection head the red trouble indicator on the Bubble Buster lights Trigger Mode The Bubble Buster works in 2 trigger modes one shot and time delayed modes In one shot mode the Bubble Buster turns OFF or ON the attached piece of equipment as soon as a bubble is detected and keeps it off until the Bubble Buster is manually reset In time delayed mode the Bu
3. bble Buster turns OFF or ON the attached piece of equipment when a bubble is detected but then reset automatically after a User selectable time has passed One Shot Mode To place the Bubble Buster in one shot trigger mode set all 8 timed reset switches to the off position In this trigger mode if Sensor air is detected in the solvent line the Bubble Buster resets only as when the Reset button is manually pressed on the front panel of the unit Timed reset switches HPLC Head Level Head Ss GR rlan ZZO lIllllll LIL OFF ny Time Delayed Mode In this mode when a bubble is detected in the solvent line the Bubble Buster turns OFF or ON the attached piece of equipment for a User specified time and then automatically resets causing the attached equipment to turn back ON or OFF This mode is useful in applications such as gravity chromatography For example the Bubble Buster could monitor for air in a solvent transfer line and when air is detected turn on a pump for a specific period of time refilling the reservoir The Bubble Buster has 8 User selectable times to choose from ranging from 7 seconds to 32 minutes The desired delay period is chosen by placing that timed reset switch to the ON position Note Only 1 of the timed reset switches 5 12 should be set to the ON position at any time the others must be OFF In this configuration when air in the solvent line triggers the Bubble Buster the Bub
4. ble Buster turns ON or OFF the attached piece of equipment until the selected time expires and then automatically resets itself Input Output Options The Bubble Buster has 2 ways to electrically control laboratory equipment attached to it The first is a 3 pin connector that supplies both normally open and normally closed contacts and the second is a standard 120 volt electrical outlet The Input Output components of the Bubble Buster are used to turn equipment such as pumps or valves ON or OFF when the Bubble Buster is triggered Remember whether the equipment stays ON or OFF after being triggered depends on the type of triggering selected i e one shot or timed delayed 3 Pin Contact Closure This is a low voltage relay that operates as described in the table below When the Controller is NOT Triggered When the Controller IS Triggered LED on front panel is green LED on front panel is red A connection is made between the COM common and N C A connection is made between the COM common and N O Normally Closed pins while the N O pin is connected to Normally Open pins while the N C pin is connected to nothing nothing 120 Volt Receptacle On the back of the Bubble Buster is a standard 120 volt outlet that can be made to turn ON or OFF when the Bubble Buster detects a bubble in the solvent line If you want the outlet to turn ON when a bubble is detected set the switch on the back panel marked When triggered turn outle
5. es Switch Switch 1 2 The HPLC Monitor Head fits standard 1 8 transparent teflon tubing used on most HPLC systems Detection is less efficient with translucent tubing which should be replaced with clear teflon tubing Tubing for Waters HPLC systems which is slightly larger than 1 8 fits in the monitor head but must be flattened a little first Remove the nylon cover and foam pad from the grooved end of the monitor head Place the solvent line leading from the reservoir bottle into any of the 4 grooved openings on the monitor head Up to 4 separate lines can be inserted while any unused positions can remain open Replace the foam pad and nylon cover and place the head in a position where it s out of the way and won t be hit causing the detector to false trigger Set the timed reset switches switches 5 12 to the off position see below There are 2 ways to establish the electrical connections between the HPLC and the Bubble Buster see the section that follows The best way is to connect the Bubble Busters 3 pin I O outlet and the HPLC s external stop terminals If the HPLC Monitor Head HPLC system or pump is equipped with an external stop refer to the systems User s Manual to determine if these terminals need a contact closure or a contact opening to activate Ifa contact closure is needed plug the supplied cable into the Bubble Busters 3 pin I O plug then connect the red and black wires to the remote stop terminals on the HPL
6. t to the On position If you want the outlet to turn OFF when a bubble is detected set the switch on the back panel marked When triggered turn outlet to the Off position
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