BF-D215B+, featuring compact construction and rail-mounted design for quick installation, is mainly used to control hot water circulation, water return systems, etc.
The controller enables intelligent detection of the temperature difference between a [high temperature (HT) point (e.g., heat collector)] and a [low temperature (LT) point (e.g., water tank)]. Once the [temperature difference] reaches the user's preset value, the relay output will be automatically activated to control [circulation pumps] and other loads for cooling and heating circulation of HT and LT media to minimize the temperature difference between the HT and LT temperature zones (temperature difference).
BF-D215B+ supports activation only in case of positive temperature difference. No output will be activated if the temperature difference is a negative value.
Thanks to the wide range of rated power supply, the controller is able to ensure stable, reliable and durable operation by adapting to AC80V～240V power supply.
（产品已申请专利，仿冒必究）
Measure the temperature difference between two points, and start one-channel relay output once the set positive temperature difference is reached
Relay output NO/NC contact
Press F1 to view temperature individually at HT/LT point
Manual correction for measured HT/LT temperature value
Memorize the set parameter for a long time after power failure
NTC 240K temperature sensor for stable and reliable measurement
No compensation required for long-distance (100 m) measurement by the temperature sensor
To be mounted on standard guide rail, featuring small size and easy installation.
Switch mode power supply, ensuring stable running with AC80-240V power supply
Packing List of Product |
1. Main unit 2. 2 x NTC (10K) temperature sensing wire 3. User instructions |
Overall Dimensions (mm) |
L 91 × W 40 × H 52 |
Installation and Dimensions (mm) |
The controller can be installed on a standard DIN guide rail or permanently mounted with two fixing holes (hole pitch = 84 mm). |
Weight |
Net weight: 0.188 Kg Gross weight: 0.232 Kg |
Power Supply and Consumption Power |
AC (80～240)V, 2W |
Operating Conditions | -10℃ ~ 50℃ |
Display Mode |
LED digital display |
Keys |
Push-type membrane keys |
Input |
Two-channel 10K NTC thermistor temperature sensor inputs, measuring range: -50～120 ℃ |
Output |
1. One-channel relay NO/NC contact output for temperature difference circulation 2. Current capacity of output contact: 5 A (resistive load) and 1 A (inductive load) Able to control 1000W electric heating equipment or 200W motors or water pumps. AC contactors should be used to increase the capacity for larger loads. |
Measurement Range |
-50～120 ℃; Measurement range of temperature difference: -99～120℃ |
Setting Range |
0～80 ℃ |
Control Range |
0～80 ℃ |
Other Parameters |
1. Temperature sensing wire can be extended by 100 m with ordinary wire for long-distance connection. 2. Memorize the set parameter for a long time after power failure 3. Temperature control hysteresis: 0 ℃～30 ℃. |
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