|  | | | Base unit with four or six mixer stations
The base unit (CLM4 shown) contains most of the components of the CLM jar tester system, including jar support base, mixer drive system, mixer paddles, light, cooling fan, tachometer, and controls. The CLM base units occupy far less bench area than any other currently available jar testers with equivalent features. The use of one-litre (rather than two-litre) sample sizes helps avoid errors in dosage calculations, makes jar handling easier, and requires less sample volume (often an important consideration in off-site work). The ECE jar configuration, with improved sampling system, is used. |
| | | Mixer assembly
The mixer / drive gear assembly is integrated into the base unit structure. Paddles can be lifted and parked, or lowered for service, in a single, one-handed operation taking less than a second. A common problem with jar testers is water remaining on the mixer shafts, being deposited in the shaft bearings, and causing the bearings to seize. This problem is overcome in the CLM by the use of carefully selected and controlled clearances and construction materials. The drive train uses hardened steel helical gears for ruggedness and long life. |
| | | Control panel |
| | | | The CLM control panel includes: - accurate digital mixer speed indicator
- five adjustable preset mixer speeds, plus continuously variable control
- dual alarm timer and clock
- mixer and light switches.
Behind the control panel are the drive motor and mixer shaft coupling, regulated DC power supply, cooling fan, speed sensor, and electronic circuit boards. |
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| | | Preset mixer speeds |
| | | | The mixer control has five switch-selectable, adjustable preset speeds. These presets are adjusted by means of a screwdriver type tool (supplied with the CLM) inserted through holes in the front panel. The preset speeds offer convenience and reproducibility, and the additional continuous adjustment control provides the extra flexibility sometimes needed. We have deliberately avoided automatic programmable sequencing, as we have found that in practice this is a complication most users do not like, use, or want. |
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| | | High-intensity mixing |
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| | | Proper illumination is essential for accurate, reliable, and consistent observation of the samples being tested. The CLM jar tester system incorporates a high-efficiency, high-intensity, dual-tube fluorescent lighting system for very intense illumination of the samples. Part of the CLM base structure is a solid (black) vertical surface behind the jars, to provide a consistent and uniform background for observation of samples. A white plastic curtain sheet is also provided for insertion behind the jars for those occasions when a white background would be better (such as when evaluating color removal). The excellent illumination and close spacing of the sample jars facilitates documentation of test results by photographic means. An internal cooling fan greatly reduces the possibility of misleading results caused by the convection currents that would otherwise result from heating of the jar bases by the lamps. The fan operates automatically whenever the lamps are on. |
| | | Simultaneous chemical dosing |
| | | | The chemical dosing system used with the CLM allows accurate, simultaneous, and consistent addition of coagulant or other chemicals to all jars. This eliminates errors resulting from differing coagulant addition procedures or mixing times. The combination dosing/baffle module can be removed after addition of chemicals to give easier access to jars and to allow other attachments to be used. |
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| | | Light weight and compact sizeThe CLM system has been specifically designed to be readily portable, and can be easily carried by one person. The four-station CLM4 is particularly light, compact, and easy to transport. All components of both the CLM4 and the CLM6 can be accommodated, fully assembled, in the original suitcase-style shipping carton. |
| | | | Optional CLM4 carrying case | | | |  |
| | | | An optional rugged, lightweight carrying case is available for the CLM4. The case is constructed of molded plastic, with metal trim, hinges, clasps, and handle. A foam rubber lining provides excellent protection for the contents. The inside of the case has room for all the components of the CLM4 system, plus space for accessories such as reagent bottles, sample containers, beakers, syringes, or other items. Outside dimensions of the case are 24” x 19” x 8”, and its weight is 9 lb. |
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| | | DownloadsHere is some additional downloadable information on the CLM jar tester system. Left click to view the files; right click and select Save Target to save to disk. Most files are in Adobe Acrobat (.PDF) format. To access the files, you will need Acrobat Reader; if you don’t have it, you can download it free. |
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| Price List Price list for all current ECE equipment.
(48 k) | 
| The Owner’s Manual supplied with the CLM jar tester system.
(141 k) |
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| A two-page brochure summarizing the main features of the CLM jar tester system. Includes an engineering specification (downloadable separately in MS Word format - see below).
(128 k) |
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| A brief engineering specification (in MS Word format), for use in contract documents.
(21 k) |
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| A chart showing velocity gradient (G) vs mixer speed for the ECE 1 L square jars used with the CLM jar tester system.
(54 k) |
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