TC-1240 - Uncategorized Steren - Free user manual and instructions
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| Product type | Digital temperature controller |
| Brand | Steren |
| Model | TC-1240 |
| Temperature range | -50°C to 110°C |
| Display | 3-digit LED display |
| Sensor type | K-type thermocouple |
| Control mode | On/off with hysteresis |
| Relay output | 10A / 250V AC |
| Power supply | 110-240V AC, 50/60Hz |
| Dimensions | 75 × 34 × 70 mm |
| Weight | 200 g |
| Protection rating | IP30 |
| Operating environment | 0°C to 50°C, <85% RH |
| Installation | Panel mount with clips |
| Calibration | Offset adjustment available |
| Accessories included | K-type thermocouple probe, mounting brackets |
| Maintenance | Clean with dry cloth, ensure no condensation |
| Safety features | Relay output protected by fuse |
| Spare parts | Replacement sensors and relays available |
Frequently Asked Questions - TC-1240 Steren
What is the Steren TC-1240 used for?
The TC-1240 is a digital temperature controller designed to maintain a set temperature by switching heating or cooling equipment on and off.
What type of temperature sensor does the TC-1240 use?
It uses a K-type thermocouple. The sensor is connected to the input terminals on the rear of the controller.
Can the TC-1240 be used for both heating and cooling?
Yes, the controller has a selectable heating/cooling mode. For heating, the relay closes when temperature drops below the setpoint; for cooling, it closes when above.
What is the temperature range of this controller?
The TC-1240 covers a range from -50°C to 110°C, which suits most refrigeration, greenhouse, and incubation applications.
How do I program the desired temperature?
Press the SET button to enter setpoint mode, then use the UP/DOWN buttons to adjust the value. The display will alternate between current temperature and setpoint.
Does the TC-1240 have calibration or offset?
Yes, it provides a temperature offset function (CAL) to correct for sensor drift or probe placement errors.
What is the electrical rating of the relay?
The built-in relay is rated at 10A / 250V AC, allowing direct control of most small heaters, compressors, or fans.
How do I connect the TC-1240 to my power supply and load?
Connect the power supply to the dedicated power terminals and the load to the relay terminals labeled normally open (NO) or normally closed (NC). Follow the wiring diagram in the manual.
Why does the relay switch frequently?
Frequent switching can be reduced by increasing the hysteresis value. Set a wider differential between the switch-on and switch-off points to prevent rapid cycling.
Is the TC-1240 easy to clean and maintain?
Yes. Disconnect power and wipe the housing with a soft, dry cloth. Periodically check the probe and wiring for damage. Avoid moisture and solvents.
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USER MANUAL TC-1240 Steren
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Product information
Brand : Steren
Model : TC-1240
Category : Uncategorized