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TC Digital Temperature Unit

SKU 7245801-7245803 Categories ,

· 19″installation
· Simple structure, easy installation;
· Easy cabling & operation;
· Disturbing resistance、reliable running ;
· 2-way output (IEC320 C13 and NEMA 5-15R).


TC Digital Temperature Unit

Main Part

Model No. Input Connector Type
7245801 UK type(BS1363)
7245802 German type(DIN49441)
7245803 US type(NEMA 5-15P)

Technical Parameters

· Power supply: 220VAC+ 10%/-15% , 50/60Hz.
· Temperature measuring range: -50℃ ~99℃.
· Resoluton: 1℃.
· Refrigeration output contact capacity: 10A/277VAC.
· Senssor error delay time: 1min. .
· Safe level: 1P65.
· Operation humidity: 20~85%(no condensate).
· Power consumption: ≤3W.
· Temperature controling range: -40℃ ~50℃.
· Accuracy: -50℃ ~70℃, ±1℃, ±1 ℃ at others can drive single phase compressor≤1/2HP.
· Sensor: NTC.
· Operation temperature: -30℃~75℃.


Key operation

· Check parameter set value:

Press ▲ and then loosen to display the set upper limit; Press and then loosen▼to display the.

Modify parameter set value

· Press set for more than 3s to cnter into parameter modifying status the last,display the last adjusted menu after electrified with parameter modifying indicator light on.

· Press ▲ or▼to go forward or backward the menu item; press set to display the current.

Parameter set value

· Press set and ■ or ■ simultaneously can adjust the current parameter set value;press set and ■ simultaneously more than 1s will increase current parameter set value quickly; press set and ■ simultaneously more than 1s will decrease current parameter set value puickly;

· Press rst or no key operation in 30s will save the modified parameter and retutn to normal temperature display status.

Restore the parameter setting

· When electrify the controller,first check the parameter setting,if parameter setting is wrong, LED display E1 with buzzer sound,at this time press Set will restore default parameter setting.

· Advise to reset the parameter.

Front panel

TC Digital Temperature Unit-2

Key-press function

Key-press Reference Performance
SET Check compressor protection time Display current menu set value
SET…3 seconds Enter into parameter modification
Rst Check temperature exceeding value Quit from parameter modification
Temperature upper limits checking Menu items go backwards
Temperature lower limits checking Menu items go forwards
SET+▲ Parameter values increase by degrees
SET+▼ Parameter values decrease by degrees

Control output

· Compressor:When the storage temp.Is higher than set temp.Upper limit,compressor starts, lower than set temp. Lower limit,compressor stops, When sensor errir, compressor works proportionably as on -15 minutes off -30 minutes. After electrified or compressor stops . Compressor restart-up is allowed after running out of compressor protection time.

· Alarm:While temp.exceeding valus is not 0.LED blinkingly displays current temperature when storage temperature is higher than set temperature upper limip +exceeding temp value or lower than set lower limit-exceeding temp. value. When rumming out of the exceeding temp.limit alarm delay after electrified. exceeding temp.limit alarm starts with buzzer sound,and alarm cancel when temperature return to normal temperature LED blinkingly Display E1 with buzzer sound when memorizer error; display E2 with buzzer sound when sensor error, Display HH when temp. Higher than 99°C and lower than 120’C. Press any key to cancel alarm sound, but alarm status remains.

Lndicator light description

Staus Input Connector Type
Cool Always on Compressor cutput
Cool Flashes Compressor cutput delay
Set Always on Parmeter modification status

Wire diagram

TC Digital Temperature Unit-3

Key-press function

Item Funtion Fetting range Unit Default
F1 Upper limit F2~+5 °C -10
F2 Lower limit -40~F1 °C -20
F3 Temperature calibration -5~5 °C 0
F4 Compressor protection time 0~9 Min 3
F5 Exceeding temperatuer value 0~50, set value as 0 to cancel alam °C 15
F6 Exceeding temperature alarm delay time F2~+5 °C 20

Safety regulations

· Danger: Strictly distinguish the sensor down-lead,power wire and output relay interface from one another,prohibit wrong connections or overloading the relay. All connections should be modified under electricity cut-off.

· Warning: Prohibit to use the machine in water or under the environment of ower damp, high temperature,string electromagnetism interference ir string corrosion.

· Caution: The power supply should conform to one labeled on the machine,and ensure the stability of the power voltage. Sensor down-lead and power should be kept for a proper distance to avoid possible interferences.

Error Code

Code Reason Staus
E1 Memorizer error Alarm,machine dose not work
E2 Sensor error Alarm.Comressor starts/
stop proportionably
HH Exceeding temp,
display limit





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