Product Description
This product is intended for use only in accordance with the directions and
specifications contained in this User Guide. While Humboldt Deluxe Water
Baths can be used for many uses within labs, they were designed specifically
for use in providing a consistent temperature bath for storing asphalt Marshall
specimens in accordance with ASTM D6926, AASHTO T245 and British
Standard BS 598: Part 107. The control processor in all our water baths provides
a temperature range from ambient to 180°F (82°C) accurate to within 0.1% of
input span ±1°C.
Humboldt Water Baths are fully insulated to help maintain constant
temperatures easily. Models H-1390 and H-1392 can accommodate (12) 4"
diameter or (3) 6" diameter Marshall specimens at a time. And the model
H-1394 can accommodate (16) 4" and (9) 6" diameter Marshall specimens at
a time. All models include a stainless steel shelf, which supports specimens
while allowing 2" of free circulating water above and below specimens. Models
H-1390 and H-1394 also utilize a magnetic stirring bar to induce water flow
within the bath and ensure a uniform temperature is maintained. Model H-1392
does not have a magnetic stirring bar.
Initial Installation
Your Humboldt water bath was thoroughly inspected and tested prior to being
shipped and should be ready to operate once initial installation procedures
are completed. To begin, please remove all packaging. Water baths are
packed, one to a box, with the bath, shelf, stirring bar and glass stirrer plate all
individually wrapped. Please make sure you remove the tape from the stirring
bar and glass stirrer plate. Inspect all components and make sure they are free
of any damage, which could have occurred during shipping. If shipping damage
is observed, please contact Humboldt or your local agent and file a claim with
any carriers involved.
You Humboldt water bath should be placed on a table or bench that is level.
Check unit for power requirements and connect the line cord plug into a
suitable electrical outlet.
Using the white stirring bar, locate the magnetic field, generated on the bottom
of the water bath tank. Once the field in located, place the round glass stirrer
plate over the field and place the stirring bar on top of the glass stirrer plate.
The stirring bar should spin in the middle of the glass, if not, shift the stirrer
plate position until the stirring bar is located in the center. ( See figure #1)
