Product Lines


2A Thermocouple:

  • Thermocouple Gauge Sensors
  • Range: 0 to 20,000 millitorr (microns)
  • Calibration Medium: Dry Air
  • Dimension: w1-1/4 " diameter x 3" high
  • Operating Temperature: 1°C to 65°C
  • End connection: NPT, NW, CF, 3/8", and 1/2" VCO and VCR fittings

The Model 2A Thermocouple Sensor tube consists of a tube containing a filament heated by the passage of a constant current. A thermocouple is welded to the center of this heated element thereby providing a means of directly measuring the element temperature in terms of voltage output. For any constant value of current through the filament, the temperature of the filament increases as the pressure in the tube is reduced. The thermocouple voltage is directly proportional to the increased temperature of the filament, and thus generates an increase in voltage. Sensitive circuitry includes the thermocouple output directly in microns. The standard sensor tube has nickel-plated, forged-brass housing which makes it capable of withstanding 150 psi overpressure. All thermocouple elements are preoxidized under controlled conditions to provide interchangeability of tubes without recalibration. This process also provides high stability and minimizes the effect of contamination. Stainless steel versions are available.

2A Thermocouple Gauge Sensors
(1 to 20,000 Microns Measurement Range)

GAUGE TUBE 2A BRS 1/8-NPT 2-2100-10 GAUGE TUBE 2A SS NW25 2-2126-031
GAUGE TUBE 2A BRS 3/8" THRU 6-2100-11 GAUGE TUBE 2A SS NW40 2-2126-032
GAUGE TUBE 2A SS 1/8 NPT 2-2126-001 GAUGE TUBE 2A SS 1 1/3" CF 2-2126-050
GAUGE TUBE 2A SS 1/2 STR 2-2126-011 GAUGE TUBE 2A SS 2 3/4" CF 2-2126-052
GAUGE TUBE 2A SS NW16 2-2126-030 GAUGE TUBE 2A SS VCR #4 MALE 2-2100-97