Labnet Accublock D1301, User Manual

4  |   AccuBlock Digital Dry Bath

1. 

Press and hold the START/STOP key then simultaneously power up the unit  

with the ON/OFF switch.

2. 

You should hear a continous beeping sound from the dry bath, release the button.   

The left display will show a set temperature and the right display will show Adjt.

3. 

Use the UP and DOWN arrow keys to set the desired temperature at which  

you want to calibrate the unit.  Then press the START key.

4. 

Allow time (up to 30 minutes) for the unit to heat up to your set  

temperature and to equilibrate at this emperature.  Once the unit reaches equilibrium,  

the display will show the set temp, (e.g. setting 95 degrees, unit will show 95 when  

hitting equilibrium)

5. 

After the temperature display has started flashing, read the thermometer (or sensor  

meter) and use the UP and DOWN arrow keys to adjust the display to the   

thermometer or sensor reading (not the difference).  The display should then show  

the same temperature as the external thermometer.  Then press the START/STOP  

 key.
6. 

The unit will then begin to automatically adjust its operating temperature to  

your original set point with the re-calibration factor included.  Allow sufficient  

time for the unit to reequilibrate and then again compare the thermometer or  

sensor reading to the calibrated display.  They should closely match.  If not,  

repeat the calibration procedure.

7. 

Upon completion of the calibration procedure, turn unit off and on again to re-set    

desired time or continuous time. 

* Thermometers used for calibration purposes should have a written calibration certificate and be 

traceable back to NIST or some other certified body. General lab thermometers are often not accurate 

enough for calibration work.

6.0 Calibration

Calibration allows the unit temperature display to be adjusted or matched to the 

temperature of a single sample or to a calibrated thermometer making an independent 

temperature measure of the block.

The Digital Dry Baths are calibrated at the factory at 37, 60, 90, 120, 140°C using a 

standard 20 x 13mm heating block. If you are using a block with a high heat loss rate 

such as a block with large holes or a platform style block, you may choose to recalibrate 

the unit to your specific application. Also, if you are using very loose or odd shaped 

vessels, the calibration function can help you match the display temperature to your 

actual sample temperature.

To calibrate the unit for a given block or sample, first turn the unit off using the On / 

OFF switch. Then place a thermometer of known accuracy* into the block thermometer 

hole or a thermocouple or other sensor into your sample. Make sure there is a good 

fit between the thermometer and the block or good contact between any sensor and 

sample or sensor and block.

To calibrate the block or sample to the display, use the following procedure: