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Transparent Type K thermocouple probe with NIST certification

REED INSTRUMENTS

REED INSTRUMENTS R2950-NIST Type K Thermocouple Probe -58 to 1112

SKU CH-FB48-R6G4Z

Type K thermocouple probe measures -58 to 1112 °F with NIST certification

  • Product colorTransparent
  • NIST certified accuracy for critical measurements
  • Type K thermocouple covers -58 to 1112 temperature range
  • Transparent housing allows visual inspection of probe condition
  • General purpose design suits diverse HVAC applications
  • Manufactured by REED INSTRUMENTS for professional reliability

Immersion probe for Type K instruments

The REED INSTRUMENTS R2950-NIST is a Type K thermocouple probe built for immersion measurements. It carries NIST certification and covers a range from -58 to 1112 degrees Fahrenheit. Technicians in HVAC, laboratory and industrial settings use it to verify process temperatures with documented traceability.

Replaces uncertified or damaged probes

Swapping an uncertified probe for this model adds a calibration record that many quality systems require. The step is worthwhile when audit trails, regulatory compliance or measurement uncertainty budgets demand a documented reference. It fits existing Type K meters without adapter changes.

Stable response during extended immersion

The probe sheath is designed for continuous liquid or air immersion rather than momentary contact. Thermal equilibrium is reached steadily, so readings remain consistent during long test cycles or process monitoring. The transparent handle allows visual inspection of the cable entry point for moisture ingress.

How it compares

Measured against everything we stock in Thermostats & Thermostat Accessories, at today’s prices. Recalculated every night.

Price $150.99
Pricier than about 76% of the 286 comparable items (median $78.49).

Specifications

Product
Brand nameREED INSTRUMENTS
Product colorTransparent

Questions about this item

What type of thermocouple connector does the R2950-NIST probe use for meter attachment?

The REED INSTRUMENTS R2950-NIST uses a standard Type K miniature connector, ensuring direct compatibility with any meter accepting Type K inputs.

During installation, how should the probe sheath be positioned to avoid measurement error?

Immerse the probe tip sufficiently into the media so the sensing junction reaches thermal equilibrium; insufficient insertion depth is the most common cause of low readings.

How often should the NIST traceable calibration on this Type K probe be verified?

Industry practice recommends annual recalibration checks to maintain NIST traceability, as Type K sensors can drift at the 1112°F upper limit over time.

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