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Barksdale's BTS3000 Electronic Dual Temperature Switch offers a fully programmable temperature control device in one compact package. The BTS300 is available in three configurations:  (1) dual temperature switch, (2) dual temperature switch with analog output (4-20 mA or 0-10 V), or (3) single temperature switch with analog output.  Setpoints and deadband are easily adjusted using a user-friendly menu where hysteresis can be set up to 125% of its measuring range. Analog transducer outputs are scalable from 25% to 100% of the full adjustable range. The BTS3000 offers an easy to read 4-digit 14-segment LED angled display which is rotatable to 320°.  Due to the BTS3000’s inversion capability, the units can be installed upside down while maintaining the original text orientation. The BTS3000 is an ideal solution for temperature control applications requiring precision, flexibility and long life.

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  • Measuring range: -22° to +284°F (-30° to +140°C)    
  • One or two switch points
  • Analog output 4 - 20 mA or 0 - 10 V
  • Display & electronic connection: rotatable by 320°
  • Simple navigation menu
  • Superior EMI protection
  • 0.50% accuracy
  • Enclosure Rating: Type 4X (IP65) / Type 6 (IP67)

Technical specifications

General Specifications*

Sensor element: PT100 Class A DIN/IEC 60751
Wetted parts:

304 Stainless steel
304 Stainless steel/polycarbonate/elastomer
FKM fluorelastomer (standard)
EPDM (optional)
Operating elements: 3 easy-response push-buttons
Enclosure rating: ype 4X (IP65) / Type 6 (IP67)
Protection class: III
Electrical connection: Plug M12 x 1, 4-pin / 5-pin
Process connection: 1/4” NPT Male, 1/2” NPT Male, 7/16-20 UNF
(SAE-4) Male, G1/4” Malediaphragm (only piezoresistive)
Dimensions enclosure: 1.6 Ø x 4.4 inches (without plug connector and sensor)
Weight: Approx. 0.4 lb (200 g)
Measuring ranges: -22°F to +284°F (-30°C to +140°C)
Max. pressure: 2,900 psi (200 bar)
Scanning rate:

12 bit (4,096 steps per measure span)
Time constant: Approx. 40 s
Accuracy: < ±0.5 % f. s. at +25 °C
Repeatability: ±0.1% f. s.
Temperature range:

14°F to 140°F (-10°C to +60°C)
-22°F to 176°F (-30°C to +80°C)
Power supply: 15 to 28 V DC, reversed polarity protected (SELV, PELV)
Class 2
Digital display:
Display rate:
4-digit 14-segment LED red display, digit height .35 inches (9 mm)
Error display: LED RED and alphanumeric display
Power consumption: Approx. 50 mA (without load)
Analog output:
Current output:
Scanning rate:
Voltage output:
Adjustment range:

4-20 mA
2 ms
0 to 10 V DC
max. 10 mA
25% to 100% f. s.
Transistor switching outputs:
Switching function

Switching output:
Adjustment range forswitching point and hysteresis:
Switching frequency:
Status display(s):
Normally open / normally closed,standard /window mode and diagnosis function adjustable
0% to 125% f. s.

Max. 100 Hz
Max. 500 mA, short-circuit-proof
0.0 s to 50 s adjustable
LED(s) red
Approvals: cULus
EMI EN 61000-4-2 ESD 4 kV CD / 8 kV AD
EN 61000-4-3 HF radiated 10 V/m
EN 61000-4-4 Burst 2 kV
EN 61000-4-5-Surge 1/2 kV
EN 61000-4-6 HF conducted 10 V
Shock resistance** DIN EN 60028-2-27 50 g (11 ms)
Vibration resistance** DIN EN 60028-2-26 20 g (10 to 2000 Hz)
* See product configurator for additional options.
** At probe length over 100mm shock & vibration resistance can be influenced by the application