DIGISYSTEM DSD-100D User manual

DIGISYSTEM LABORATORY INSTRUMENTS INC. www.digisystemlab.com REV.2-2020
INSTRUCTION MANUAL FOR DRY BATH DSD-100D & DSD-200D
Warnings:
* The surface is hot. Do not touch.
* Do not put any objects on the top of the instrument.
* Please keep the environment ventilated.
* The instrument should be placed in a low relative humidity and low dust place away from water source.
1. Connect with power supply. Please make sure the power voltage is the same as the voltage shown on the
label stuck on the back of machine.
2. Press “ON/OFF Button”, then you will see the “Power indicator’ becomes green. Wait for about 5 seconds;
you can see that on the display screen, the top row is the present temperature value (PV) and the bottom
row is the setting temperature value (SV).
3. Set temperature: you will see . Press or to adjust SV value and then press to
enter the value.
4. Set time: Select time mode: Continouos mode or Timer mode .
4.1 Press to set Continuous mode. OUT2 indicator on display screen will disappear. The
setting is finished. Go to Step 6.
4.2 Press to set Timer mode. OUT2 indicator on screen will appear.
4.2.1 You will see or .
4.2.2 Use or key to select time unit (hour) or (minute). Press
to enter the value. Press to next setting.
4.2.3 You will see . Use or key to adjust the time value. Press to enter the
value. Press to next setting.
Block lifter
Block
Block

DIGISYSTEM LABORATORY INSTRUMENTS INC. www.digisystemlab.com REV.2-2020
4.2.4 You will see . Press and you will see . The setting is
finished.
Remark: If you want to interrupt the timer mode, you can press to be continuous mode.
5. After finishing the work, please press “ON/OFF Button” to turn off the power, and then the “Power
indicator’ becomes red.
Remark:
When the “OUT1” indicator on the display screen is sparkling, it means that the instrument is heating.
Caution:
In any of following causes, turn off the power supply and unplug immediately. And contact the distributor
for service.
1. Liquid drops into the instrument.
2. The instrument is dropped or the housing is damaged.
3. The instrument works abnormally, especially generating an abnormal odor or sound.
Maintenance and care:
Keep the instrument clean all the time, so no routine maintenance is required. Cleaning can be done with a
damp cloth. Avoid the use of solvents as they may damage the product housing and inner chamber. The
holes of blocks should be regularly cleaned with a damp cloth to make sure that the test tube will be
contracted with the wall of the holes so as to have good heat conduction. When cleaning the instrument,
the power supply should be unplugged.
Circuit Diagram:

DIGISYSTEM LABORATORY INSTRUMENTS INC. www.digisystemlab.com REV.2-2020
Other functions:
Note: Before executing other functions , please make sure that the continuous mode is selected.
If you see OUT2 indicator on the screen, please press to set Continouos mode.
1. Other functions include PV shift (offset) value, setting alarm point, setting temperature unit, auto
tuning function.
Action
Display
(Initial value)
Explanation
Adjustment
Press
(0)
PV shift (offset) value. If PV value is not
correct, you can use this function to calibrate
by your own thermometer.
Press or to adjust
the value. Then press
to enter the value.
If you want to go back to
PV/SV display, press
again.
Press
(4)
Upper-limit point for alarm. When the
difference between PV and SV is over
upper-limit, the alarm indicator (ALM1) on
display screen will be flashing.
Press
(4)
Lower-limit point for alarm. When the
difference between SV and PV is over
upper-limit, the alarm indicator (ALM1) on
display screen will be flashing.
Press
(C)
Temperature unit. C or F.
Press
(OFF)
Auto-tuning function. When auto-tuning
function is on, the “AT” indicator” on display
screen is flashing. When the function is off, the
light of the “AT” indicator” is extinguish.
2. Restore default value:
2.1 Press more than 3 seconds, and then you will see 。
2.2 Press and then press , you will see is flashing. Please press to enter the value.
Then the default value is restored.
Service Manual
Troubleshooting Guide
Caution: Always disconnect the power cord before troubleshooting.
Trouble
Cause
Remedy
Instrument inoperative
Power cord not connected to outlet.
Pluginstrumentin.
Dead power output.
Changeto different output.
No fuse Breaker is off
Press the breaker back of the machine, and
check if thecurrentisoverload.
Electronic element broken
Contactyourdistributorforrepair.
Power switch is broken
Contactyourdistributorforrepair.
Controller can’t control the
temperature
Sensor is broken
Contactyourdistributorforrepair.
Controller
Contactyourdistributorforrepair.
Heater is broken
Contactyourdistributorforrepair.
The key of PID controller can’t
work
The keys has been locked
Pleaserefer totheotherfunctiontorelease
the lockstatus.
Temperature is not stable
The initial setting value is not suitable for the
ambient air temperature where the machine is
located
Referto theother functions,execute the
Auto-tuningfunction.
PV value is not correct
User’s calibration thermometer is different
from the factory’s calibration thermometer
Referto theother functions,execute the
function forPVshift(offset)value.