48 x 48 mm knob setting no display controller

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This analog temperature controller is used for simple applications with on/off or P control, without deviation indication.

As a professional and experienced manufacturer, we supply high-performance and quality temperature controllers, which are also called temperature control, electronic temperature control, and electronic temperature controller.


  • Build-in Laser Trim ASIC
  • Easy to change range
  • ON-OFFor time proportional selectable
  • Compact, only 86mm in depth
  • Wide selection of control output option
  • Wide selection of ranges
  • Sensor break protection
  • Low Cost
  • Safety : UL,cUL
  • EMC, LVD : CE
Thermocouple (T/C) Type J, K
RTD 3-wires PT 100 ohms, DIN or JIS
Range See ordering information
Accuracy ±2 %of span
Cold Junction Compensatin ±0.1°C / 1°C
Rejection of RTD Lead Resistance ( 0.1°C - 0.025% of PV reading) / ohm
Sensor Break Protection Upscale
External Resistance  100 ohms max.
Normal Mode Rejection 60 dB
Common Mode Rejection 120 dB
Sample Rate 3 times / second

Proportion Band 2.2% of span
ON-OFF Hysteresis  1 % of span
Cycle Time 20 seconds for relay output, 1 second for pulsed voltage output, 0.02 second for linear current or voltage output.
Control Action Reverse action

Control Relay 5A / 240V max. resistive load
Pulsed Voltage 20mA / 32VDC max.
Current 4-20mA, 0-20mA, max. load 500 ohms
Voltage 0- 10V, min. load 500k ohms

Set point Single turn wirewound potentiometer
Resolution of set point 0.2% of span
Accuracy of set point ±2%of span
Repeatability of set point ±0.1 span

Process Indicator BTC-902 : HI/LO LED indicators, 
BTC-901 : None
Status Indicator ON (red) LED Lamp, 
OFF (green) LED Lamp

Rating 100-130VAC or 200-240VAC, 50/60Hz
Consumption Less than 5VA

Operating Temperature 0-50°C
Humidity 0 to 90% RH (non-codensing)
Insulation 20M ohms min. (500VDC)
Breakdown AC2000V,50/60Hz,1 minute
Vibraton 10-55Hz,amplitude 1mm
Shock 200 m/s² (20g)
Weight BTC-901: 240 grams, 
BTC-902: 270 grams
Dimension 48(W)X48(H)X86mm (depth behind panel)
Panel cutout 45 X 45mm

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“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.


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