The TD230 is a turnkey differential temperature controller that can be used to achieve or maintain a fixed temperature difference between two different locations or chambers. Several typical applications are: solar water heater control, drying oven temperature control, or basement anti-condensing temperature control.
Features: This controller uses two temperature sensors. The temperature difference between the two sensors (DT) is used for output control. In addition, the controller has two independent outputs. One of the outputs is to control a cooling device so that DT is limited to a specified range. The other output is for a heating device so that DT maintains and does not fall under a specified temperature range. Different operation temperature ranges of the two outputs can be set separately. Once the cooling range is set, the controller program will automatically limit the heating range to prevent both heating and cooling from being turned on at the same time.
This controller is a plug and play controller requires no wiring. Both the heating and cooling control modes have simple on/off control, similar to a mechanical thermostat but with higher precision due to an adjustable hysteresis band, precise sensors and digital readouts. An anti-short function is provided for cooling output to protect the compressor from frequently cycling on/off during high pressure Freon.
Two digital silicon band gap sensors are used. The advantage of this sensor is that it is more reliable in moist environments than thermistor sensors. This digital sensor can also be immersed over extended periods of time. They also have a more uniform accuracy over an entire specified temperature range.
Specifications
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Temperature Control Range
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-50 ~ 105°C, -58 ~ 221°F
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Temperature Resolution
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0.1°C (between -9.9 ~ 99°C)
1°C (between -50 ~ 10°C and 100 ~ 120°C)
0.1°F (between -9.9 ~ 99.9°F )
1°F (between -58 ~ 10°F and 100 ~ 248°F)
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Temperature Accuracy
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0.5°C or 0.9°F
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Temperature Control Mode
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On/Off Control. Heating and Cooling
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Temperature Control Output
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10A, 120 V or 240 V AC *
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Audio Alarm
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High and Low Limit
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Sensor Type
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Silicon Band Gap Sensor
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Sensor Size
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0.24" OD. (6.0 mm), 2" Length (50 mm)
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Operating Temperature
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-20 ~ 50°C (0°F ~ 120°F) |
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Dimension
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91 x 140 x 46 mm
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Input Power
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85 ~242 V AC, 50 Hz / 60 Hz
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Sensor Cable Length
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Sensor 1: 6 ft (2 m)
Sensor 2: 12 ft (4m)
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Power Cable Length
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3 ft (1 m)
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Warranty
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One (1) year limited warranty
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Note:
- The controller can display temperature unit in Celsius or Fahrenheit.
- Unlike the PID controller we sell, this on/off controller will not hold the temperature as tight if the system had very slow and delayed response. Some temperature overshoot is normal.
- Either the heating or the cooling device is limited to 10 Amps. The output voltage is the same as the input voltage. When the controller is plugged into 120V AC, the output will be 120VAC. If the controller is connected to 240 VAC, the output will be 240VAC also.
- The input power plug is a US NEMA 5-15P plug. The output sockets are US NEMA 5-15R. Optional input & output travel plug adapters are offered. Please check here for more details.
Click here for the instruction manual for TD230/TD220
Click here for its replacement sensor (free-hanging)
Click here for its replacement sensor (tri-clamp)
This product was added to our catalog on Tuesday 06 August, 2013.
