เครื่องกวนสารละลาย HI 304N Auto-Reverse Magnetic Stirrer with Tachometer
Auto-Reverse Magnetic Stirrer with Tachometer
When stirring a solution, to work with a constant speed is an important factor in ensuring that the best repeatability in tests and processes is achieved. Without a tachometer, there is no way of knowing the RPMs.
HI 304N is a heavy-duty stirrer with a built-in tachometer. It is often desirable to stir in two directions in order to achieve maximum homogeneity. An advanced circuit allows HI 304N to reverse the direction of the stir at a user selected interval. The interval can be adjusted from 30 seconds up to 3 minutes. In addition to precision speed control, a limiter will also assure that the maximum speed will never be exceeded (Speedsafe™). Often, a sample is removed from the stirrer before the uses reduces the speed with ordinary stirrers. This can cause the motor to accelerate until it is destroyed. HANNA stirrers incorporate a VCO device that will stop the motor from accelerating as soon as the load is removed.
The HI 304N magnetic stirrer, stainless steel cover, micro stir bar and instructions.
|Maximum Stirring Capacity||2.5 liters|
|Speed Range||Low||100 rpm|
|Speed Range||High||800 to 1000 rpm|
|Reverse Interval||from 30 seconds to 3 minutes|
|Power Supply||110/115 Vac or 230/240 Vac, 50/60 Hz|
|Cover Material||AISI 316 Stainless Steel|
|Environment||0 to 50°C (32 to 122°F); RH max 95%|
|Dimensions||180 x 180 x 70 mm (7.1 x 7.1 x 2.8″)|
|Weight||1.4 kg (3.1 lb.)|