April 2008, Vol. 20, No.4
The series DLD Dual Channel Leak Detection Relay is used to monitor the shaft seal of two submersible pumps to detect a leak before pump failure. A leak is detected by sensing the status of a float or conductivity switch installed in the seal cavity. When this resistance drops below the set sensitivity, the output relay energizes, and the LED indicator illuminates. The DLD offers normally open relay contacts to energize an alarm and de-energize the pump in the event of a leak. When the seal failure condition clears, the relay automatically resets. Installation is made simple with the standard 8-pin octal mount. Dwyer Instruments (Michigan City, Ind.).
This 2-Dimensional Electrophoresis System has an easy-to-use, highly reproducible, second-dimension separation tank. The complete 2D System includes the IEF100 first-dimension isoelectric focusing unit and the SE900 second-dimension gel electrophoresis unit. The IEF100 is designed to help researchers increase the quality and speed of their IEF separations. The SE900’s single-tank design is designed for leak-free runs and the ability to reuse buffer, and the SE900 is designed for ease of use, minimal parts, and efficient cooling. Hoefer Inc. (San Francisco).
Automatic Onsite Caustic Dilution
Diluting onsite improves feed-loop control and operator safety. The unique patented design of the Merlin Dilution system permits total flexibility in final dilution strength, optimizes metering pump accuracy, and allows chemical usage to be remotely monitored. Force Flow (Concord, Calif.).