Ketotek KT4000 User manual

Ketotek Technology Inc. www.cnketotek.com
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KT4000 Temperature Controller
Operating Manual
1. Overview
• Control heater and cooler to adjust temperature.
• Easy to set a temperature range LS1~LS2.
• Plug and play design. Easy to connect heater and cooler.
•Alarm when temp exceed temperature limit or sensor error
•Support setting cooler delay start.
• Autosave the program setting when power down.
• Can be used for aquarium, pet breeing, domestic freezer,
incubator, water tanks, refrigerator, industrial chiller,
steamer, industrial equipment and other temperature
controlled systems.
2. Specifications
• Power Supply: 110Vac±15% , 50/60hz
• Temperature control range: -19.9~199.9℉
• Setting temperature control range: LS1~LS2℉
• Temperature setpoint LS1 range: -19.9~LS2℉
• Temperature setpoint LS2 range: LS1~199.9℉
• LS1 return difference value Hd:1~25℉
• LS2 return difference value Cd:1~25℉
• Temperature control accuracy: ±1℉
• Screen resolution : 0.1℉
• Temperature sensor : NTC Waterproof sensor 2m/6.56ft
• Output power: Max 10A 110Vac each outlet
3. Product picture
Left heating socket connect with heater.
Right cooling socket connect with refrigerator/cooler.
4. Key Instruction
•LCD screen: under running mode: display environment
temperature from sensor . under setting mode: Display
menu code .
•:Up key. Under running mode,press up key to display
LS2 value. Under setting mode,press up key to increase
value.
•:Down key. Under running mode,press down key to
display LS1 value. Under setting mode,press down key to
decrease value.
• : Cool output indicator. When this light on, cooling
socket have power output. Cooler start to work ; When the
light flash, cooling socket output delay .
•:Heat output indicator. When this light on, heating
socket have power output. Heater start to work.
•:Temperature alarm.When the temperature exceed the
limit range of AL~AH, this light flash and buzzer alarm.
5. Key Operation Instruction
• In normal working status, the screen display real time
temperature detected from sensor . press once. it display
setpoint LS2. press once. it display setpoint LS1. The
temperature value will return to real time temperature after
3s no-operation. The screen backlight will closed after
10minutes no-operation.
•How to set parameters:
• In normal working status, press SET for 3s to enter setting
parameter mode. The screen display LS2. Press or to
increase or decrease LS2 value. Then press SET to go into
next code Cd. Press or to adjust value.
• Using the same way to set code value from LS2~CA one
by one (see code table). After finishing all setting, press
SET for 3seconds to save the parameter modified value
and return to normal display. If no key operation after
finishing all settings within 30seconds, the system won’t
save modified parameter and back to normal display.
•Restore factory default setting:
• In normal working status, press and together for 5s.
The screen will display FF and restore all code to default
factory setting.
•Code Table:
6. Operation Instruction
•(1) How to build your thermostat system?
• For example, we use this thermosat to control temperature
of a reptile incubator. We use light as heater and fan as
cooler in incubator. The max power of light or fan are all
Code
Function
Set Range
Default
LS2
High temperature setpoint
LS1~199.9℉
68℉
Cd
LS2 return difference
1~25℉
3℉
LS1
Low temperature setpoint
-19.9~LS2℉
68℉
Hd
LS1 return difference
1~25℉
3℉
PL
Set cooling delay output
0~10minutes
0
AH
Alarm when temperature
more than this high limit
LS2~199.9℉
199.9℉
AL
Alarm when temperature
less than this low limit
-19.9~LS1℉
-19.9℉
CA
Temperature Calibration
-19.9~19.9℉
0

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less than 500w. We put screen and socket outside the
incubator, Put sensor inside the incubator. Heating socket
connect with light.Cooling socket connect with fan.
•(2) The operation mode as below:
• In normal working status, the screen display RT (real time
environment temperature inside the incubator). We set the
required temperature range LS1 LS2. Set Hd Cd PL AH
AL. (AH>LS2+Cd , AL<LS1-Hd). The controller will
work in following status:
•►There is no output when LS1<RT<LS2 .
light off. Heater and cooler both stop working.
•►Cooler start to work when RT≥LS2+Cd, light on.
If you set PL, will flash.The cooler will delay to work
after the time of PL.
•►Cooler stop working when RT≤LS2, light off.
•►Heater start to work when RT≤LS1-Hd, light on.
•►Heater stop working When RT≥LS1, light off.
•For example, we want to control the temperature in
incubator between 80~90℉.
• Controller power on→Press SET for 3 seconds, we will
see LS2 →Press and hold to increase LS2 to 90℉→
Press SET to save LS2 value and see second code Cd.
Using the same way to set code: Cd=4 ℉,LS1=80 ℉,
Hd=4℉,PL=0, AH=100℉,AL=70℉,CA=0.
•►Fan works when RT ≥94 ℉. Fan stop working when
RT<90℉.
•►Light works when RT<76℉. Light stop working When
RT≥80℉.
•►will flash and buzzar alarm if RT>100℉or RT<70℉.
Light and fan both stop working.
•(3) How to use it more easier?
• You can only set LS2=90 ℉, LS1=80 ℉. Use all other
code with default value. Cd=3℉,Hd=3℉
•►Fan works when RT ≥93 ℉. Fan stop working when
RT<90℉.
•►Light works when RT<77℉. Light stop working When
RT≥80℉.
•(4) Temperature Calibration CA
• When there is deviation between measured temperature
and actual temperature, we can set CA value to align
measured temperature and actual temperature. The
corrected temperature = measured temperature + CA
7. Error Description
•Heater or cooler does not turn on when specified
temperature is reached?
• Check the Hd and Cd value you set. Recheck where you
put the sensor. Also check if you set PL. It will make the
cooler output delay
•Heater or cooler always turn on? RT exceed the range.
• 1. The power of heater or cooler are too small to make the
temperature change. 2. The sensor is put in wrong position
•LS1 can’t be set higher than a value?
• Please note LS1≤LS2. LS1 setting range is -19.9~LS2℉.
LS2 setting range is LS1~199.9℉. For example, if you set
LS2=68℉, LS1 can’t be set exceed 68℉. So you need to
adjust LS2 at first and then adjust LS1.
•AL can’t be set higher than a value?
• Please note AL≤LS1.The default value of LS1 is 68℉.
So AL can’t be setted exceed 68 ℉when you use the
controller at first time. For example, you change LS1 from
68 ℉to 78 ℉. Exit the setting mode and go into setting
mode again. The range of AL will refresh to -19.9~78℉.
•The screen display EEE or HHH or LLL?
• EEE means the temperature sensor is short circuit or open
loop or broken. Check the sensor or replace it.HHH means
the measured temperature is exceed the maximum
measuring range of controller (199.9℉). LLL means the
measured temperature is less than the minimum measuring
range of controller (-19.9 ℉).When temperature return to
measurable range , the screen will display right value.
Warning:
• The sensor probe is waterproof, but the controller is not
waterproof. Keep the controller away from water.
• The maximum current of each output is 10A
(1100W@110V). Check the amp and watt of heating and
cooling equitments to avoid the risk of overloading.
• In order to let controller work under high performence
condition for a long time. We recommend to use max
power ≤1100W when you use resistive load such as
heating rod, heating pad, electric water heater etc. use max
power ≤275W when you use inductive load such as
compressor , heat pump etc.
Warranty：
• The warranty period of our products is 12 months from
purchase. If a defective is found due to qualified problems
of the product, we will perform three commitments:
repair , replace and refund.
• Please email i[email protected] for technical support.