Brainchild BTC-2500 Temperature Controller 50x26mm

The Brainchild BTC-2500 Fuzzy Logic plus PID microprocessor-based temperature controller, incorporates a bright, easy to read 4-digit LED displays, indicating process value and set point value. The Fuzzy Logic technology enables a process to reach a predetermined set point in the shortest time, with the minimum of overshoot during power-up or external load disturbance.

Prices are based on standard 90-250 VAC power including SSR drive (5V/30mA) output

Please contact us for other configurations

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  • Fast input sample rate (5 times / second)
  • Basic & full function
  • User menu configurable
  • Pump control
  • Fuzzy+PID microprocessor-based control
  • Automatic programming
  • Differential control
  • Auto-tune function
  • Self-tune function
  • Sleep mode function
  • "Soft-start " ramp and dwell timer
  • Programmable inputs (thermocouple,RTD,mA,VDC)
  • Analog input for remote set point and CT
  • Event input for changing function & set point
  • Programmable digital filter
  • Hardware lockout + romote lockout protection
  • Loop break alarm
  • Heater break alarm
  • Sensor break alarm+Bumpless transfer
  • RS-485,RS-232 communication
  • Analong retransmission
  • Signal conditioner DC power supply
  • A wide variety of output modules available
  • Safety UL / CSA / IEC1010-1
  • EMC / CE EN 61326
Power 
90 - 264 VAC, 47 - 63 Hz, 15VA, 15W maximum
11 - 26 VAC / VDC, SELV, Limited Energy, 15VA, 7W maximum
Input 1 Characteristics 
Resolution 18 bits
Sampling Rate 5 times / second
Maximum Rating -2 VDC minimum, 12 VDC maximum( 1 minute for mA input )
Temperature Effect ±1.5 uV/ °C for all inputs except mA
input ±3.0 uV/ °C for mA input
Sensor Lead Resistance Effect T/C: 0.2uV/ohm
3-wire RTD: 2.6 °C/ohm of resistance difference of two leads
2-wire RTD: 2.6 °C/ohm of resistance sum of two leads 200nA
Common Mode Rejection Ratio ( CMRR )  120dB
Normal Mode Rejection Ratio ( NMRR )  55dB
Sensor Break Detection Sensor open for TC, RTD and mV inputs,
below 1 mA for 4-20 mA input,
below 0.25V for 1 - 5 V input, unavailable for other inputs.
Sensor Break Responding Time Within 4 seconds for TC, RTD and mV inputs,
0.1 second for 4-20 mA and 1 - 5 V inputs.
Input 1
Type Range  Accuracy@ 25 °C Input Impedance
J -120 ~ 1000 °C (-184 ~ 1832 °F) ±2 °C 2.2MΩ
K -200 ~ 1370 °C (-328 ~ 2498°F) ±2 °C 2.2MΩ
T -250 ~ 400°C (-418 ~ 752°F) ±2 °C 2.2MΩ
E -100 ~ 900 °C (-148 ~ 1652 °F) ±2 °C 2.2MΩ
B 0 ~ 1820 °C (32 ~ 3308 °F) ±2 °C (200°C - 1820°C) 2.2MΩ
R 0 ~ 1768 °C (32 ~ 3214 °F) ±2 °C 2.2MΩ
S 0 ~ 1768 °C (32 ~ 3214 °F) ±2 °C 2.2MΩ
N -250 ~ 1300 °C (-418 ~ 2372 °F) ±2 °C 2.2MΩ
L -200 ~ 900 °C (-328 ~ 1652 °F) ±2 °C 2.2MΩ
PT100 (DIN) -210 ~ 700 °C (-346 ~ 1292 °F) ±0.4°C 1.3KΩ
PT100 (JIS) -200 ~ 600 °C (-328 ~ 1112 °F) ±0.4°C 1.3KΩ
mV -8 ~ 70mV ±0.05% 2.2MΩ
mA -3 ~ 27mA ±0.05% 70.5Ω
V -1.3 ~ 11.5V ±0.05% 302KΩ
Input 2 Characteristics 
Resolution 18 bits
Sampling Rate 1.66 times / second
Maximum Rating -2 VDC minimum, 12 VDC maximum
Emperature Effect ±1.5uV/ °C for all inputs except mA
input ±3.0uV/ °C for mA input
Common Mode Rejection Ratio ( CMRR ) 120dB
Normal Mode Rejection Ratio ( NMRR )  55dB
Sensor Break Detection Below 1 mA for 4-20 mA input,
below 0.25V for 1 - 5V input,
unavailable for other inputs.
Sensor Break Responding Time 0.5 second
Input 2
Type Range  Accuracy@ 25 °C Input Impedance
CT94-1 0-50.0 A ±2%
of Reading
±0.2A
302K
mA -3 ~ 27mA ±0.05% 70.5 +0.8V / input current
V -1.3 ~ 11.5V ±0.05% 302KΩ
Input 3 (Event Input) 
Logic Low -10V minimum, 0.8V maximum.
Logic High 2V minimum, 10V maximum
External pull-down Resistance 400 K maximum
External pull-up Resistance 1.5 M minimum
Functions Select second set point and/or PID , reset alarm 1 and/or
alarm 2 , disable output 1 and/or output 2 , remote lockout.
Output 1 / Output 2 
Relay Rating 2A/240 VAC, life cycles 200,000 for resistive load
Pulsed Voltage Source Voltage 5V, current limiting resistance 66 .
Linear Output Characteristics
Type Zero Tolerance Span Tolerance Load Capacity
4-20 mA 3.6-4 mA 20-21 mA 500Ω max.
0-20 mA 0 mA 20-21 mA 500Ω max.
0-5 V 0 V 5-5.25 V 10KΩ min.
1-5 V 0.9-1 V 5-5.25 V 10KΩ min.
0-10 V 0 V 10-10.5 V 10KΩ min.
Linear Output 
Resolution 15 bits
Output Regulation 0.01 % for full load change
Output Settling Time 0.1 sec. ( stable to 99.9 % )
Isolation Breakdown Voltage  1000VAC
Temperature Effect ±0.0025 % of SPAN / °C
Triac ( SSR ) Output 
Rating 1A / 240 VAC
Inrush Current 20A for 1 cycle
Min. Load Current 50 mA rms
Max. Off-state Leakage 3 mA rms
Max. On-state Voltage 1.5V rms
Insulation Resistance 1000 Mohms min. at 500 VDC
Dielectric Strength 2500 VAC for 1 minute
DC Voltage Supply Characteristics (Installed at Output 2)
 
Type Tolerance Max. Output Current Ripple Voltage Isolation Barrier
20V ±1.0 V 25mA 0.2Vp-p 500VAC
12V ±0.6V 40mA 0.1Vp-p 500VAC
5V ±0.25V 80mA 0.05Vp-p 500VAC
Alarm 1/ Alarm 2 ( Output 2 )
Alarm 1 Relay Form A or Form B for BTC-9300, Form C for BTC4300,
BTC-8300, 5V Logic output for BTC-2500 Max. Rating
2A/240VAC, life cycles 200,000 for resistive load.
Alarm 2 Relay Form A,Max. rating 2A/240VAC, life cycles 200,000 for resistive load.
Alarm Functions  Dwell timer, Deviation High / Low Alarm,
Deviation Band High / Low Alarm, PV1 High / Low Alarm,
PV2 High / Low Alarm, PV1 or PV2 High /Low Alarm,
PV1-PV2 High /Low Alarm, Loop Break Alarm,
Sensor Break Alarm.
Alarm Mode Normal, Latching, Hold, Latching / Hold.
Dwell Timer 0 - 6553.5 minutes
Data Communication 
Interface RS-232 ( 1 unit ), RS-485 ( up to 247 units )
Protocol  Modbus Protocol RTU mode
Address 1 - 247
Baud Rate 0.3 ~ 38.4 Kbits/sec
Data Bits 7 or 8 bits
Parity Bit None, Even or Odd
Stop Bit 1 or 2 bits
Communication Buffer 50 bytes
Analog Retransmission 
Functions PV1, PV2, PV1-PV2, PV2-PV1, Set Point,
MV1, MV2, PV-SV deviation value
Output Signal 4-20 mA, 0-20 mA, 0-1V, 0-5V, 1-5V, 0-10V
Resolution 15 bits
Accuracy ±0.05 % of span ±0.0025 %/ °C
Load Resistance 0 - 500 ohms ( for current output ),10 K ohm minimum ( for voltage output )
Output Regulation  0.01 % for full load change
Output Settling Time 0.1 sec. (stable to 99.9 % )
Isolation Breakdown Voltage 1000 VAC min.
Integral Linearity Error ±0.005 % of span
Temperature Effect  ±0.0025 % of span/ °C
Saturation Low 0 mA ( or 0V )
Saturation High 22.2 mA ( or 5.55V, 11.1V min. )
Linear Output Range 0 - 22.2mA(0-20mA or 4-20mA),
0 - 5.55V ( 0 - 5V, 1 - 5V ),
0 - 11.1 V ( 0 - 10V )
User Interface Dual 4-digit LED Displays
BTC-2500 0.4"(10mm)
Keypad 3 keys
Programming Port For automatic setup, calibration and testing
Communication Port Connection to PC for supervisory control
Control Mode 
Output 1 Reverse ( heating ) or direct ( cooling )action
Output 2 PID cooling control, cooling P band 1 ~ 255% of PB
ON-OFF 0.1 - 55.6 ( °C ) hysteresis control ( P band = 0 )
P or PD  0 - 100.0 % offset adjustment
PID Fuzzy logic modified , Proportional band 0 ~ 500.0 °C ,
Integral time 0 - 1000 seconds , Derivative time 0 - 360.0 seconds
Cycle Time 0.1 - 100.0 seconds
Manual Control Heat (MV1) and Cool (MV2)
Auto-tuning Cold start and warm start
Failure Mode Auto-transfer to manual mode while sensor break or A-D converter damage
Ramping Control 0 ~ 500.0 °C/minute or 0 ~ 500.0 °C/hour ramp rate
Sleep Mode Enable or Disable
Ramping Control  0 ~ 500.0 °C/minute or 0 ~ 500.0 °C/hour ramp rate
Power Limit  0 - 100 % output 1 and output 2
Pump / Pressure Control Sophisticated functions provided
Remote Set Point Programmable range for voltage or current input
Differential Control Control PV1 - PV2 at set point
Digital Filter Function : First order
Time Constant : 0, 0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 seconds programmable
Environmental & Physical 
Operating Temperature -10°C ~ 50°C
Storage Temperature -40°C ~ 60°C
Humidity 0 to 90 % RH ( non-condensing )
Insulation Resistance 20 Mohms min. ( at 500 VDC )
Dielectric Strength 2000 VAC, 50/60 Hz for 1 minute
Vibration Resistance 10 - 55 Hz, 10 m/s² for 2 hours
Shock Resistance 200 m/s2( 20 g )
Moldings Flame retardant polycarbonate
Dimensions BTC-2500 ---50mm(W) X 26.5mm(H) X 110.5 mm(D), 98.0 mm depth behind panel
Mounting BTC-2500 ---panel mount, cutout 45 X 22.2 ( mm )
Weight  BTC-2500 --- 120 grams
Approval Standards
Safety UL 61010C-1 , CSA C22.2 No. 24-93 , EN61010-1 (IEC1010-1)
Protective Class BTC-2500, NEMA 4X(IP65) front panel , IP 20 housing and terminals
EMC EN61326

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