Humboldt H-4239A Hydrometer Waterbath - Manual (Page 4)

Product Description
This product is intended for use only in accordance with the directions and
specifications contained in this User Guide. While the Humboldt Hydrometer Jar
Water Bath can be used for many uses within labs, it was designed specifically
for use in providing a consistent temperature bath for storing hydrometer jars in
accordance with ASTM D422, AASHTO T88 and UNE 103.102 to determine the
particle size distribution of very fine materials, such as silt and clay. The control
processor in the H-4239A provides a consistant bath temperature of 68°F (20°C)
accurate to within 0.1% of input span ±1°F.
The Humboldt Hydrometer Jar Water Bath is fully insulated to help easily
maintain constant temperature. The H-4239A can accommodate (8) hydrometer
jars at a time. All models include a stainless steel shelf, which supports speci-
mens while allowing 2" of free circulating water above and below specimens;
a chiller, and all necessary tubes and connections.
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, and tubes and connections. The chiller unit for the bath is
shipped in a separate box. 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.
Your 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.
Slowly fill the bath with water. The water level should be approximately 2"
(50mm) from the top when hydrometer jars are placed in the bath.
Every Humboldt hydrometer jar water bath is calibrated to a certified thermom-
eter to ensure accurate temperatures during operation. In most cases you should
not need to recalibrate you water bath. However, if you need to access the
controller for calibration purposes, please contact Humboldt for step-by-step
directions.
LESS THAN
WARNING
UNIT SHOULD NEVER BE USED WITH LESS THAN 8 INCHES (200mm)
OF WATER FROM THE TOP OF THE SHELF. IF THE UNIT IS
EMPTIED WHEN HOT, IMMEDIATELY REFILL WITH A MINIMUM OF
8 INCHES (200mm) OF WATER