PRTs, Thermistors, Thermocouples and Liquid in Glass Thermometers

• Fully immersible probe assembly to –200°C 
• NIST-traceable calibration and ITS-90 coefficients included 
• Accuracy to ±0.05°C over the full range 

• Temperature range of 0°C to 1000°C 
• Accuracy (includes short-term stability and calibration uncertainty) of ±0.05°C to 962°C 
• Long-term drift of 0.01°C at 0°C after 100 hours at 1000°C 
• Designed by Hart’s primary standards design team 

SPRTs

Model

R_TPW

Range

5681

25.5

–200°C to 661°C

5683

25.5

–200°C to 450°C

5684

0.25

0°C to 1070°C

5685

2.5

0°C to 1070°C

5680

25.5

–200°C to 480°C

5682

100

–200°C to 480°C

5699

25.5

–200°C to 661°C

5686

25.5

–260°C to 232°C

5695

25.5

–200°C to 500°C

5629

Au-Pt TC

0°C to 1000°C

Reference Probes

Model

Range

Size

Accuracy*

PRTs

Secondary Reference RTDs

5612-X

–200°C to 420°C

9" x 0.187"

±0.018°C at 0°C

5613-X

–200°C to 300°C

6" x 0.187"

±0.018°C at 0°C

5614-X

–200°C to 420°C

12" x 0.25"

±0.018°C at 0°C

Precision Industrial RTDs

5627-6-X

–200°C to 300°C

6" x 0.187"

±0.05°C at 0°C

5627-9-X

–200°C to 420°C

9" x 0.187"

±0.05°C at 0°C

5627-12-X

–200°C to 420°C

12" x 0.25"

±0.05°C at 0°C

Secondary Standards PRTs

5626-X

–200°C to 660°C

12" or 15" x 0.25"

±0.008°C at 0°C

5628-X

–200°C to 660°C

12" or 15" x 0.25"

±0.007°C at 0°C

Fast Response RTDs

5622-05-X

–200°C to 350°C

100 x 0.5 mm

±0.04°C at 0°C

5622-10-X

–200°C to 350°C

100 x 1.0 mm

±0.04°C at 0°C

5622-16-X

–200°C to 350°C

200 x 1.6 mm

±0.04°C at 0°C

5622-32-X

–200°C to 350°C

200 x 3.2 mm

±0.04°C at 0°C

Smart Probes

5690

–200°C to 420°C

18" x 0.25"

±0.01°C

5691

–200°C to 420°C

18" x 0.25"

±0.025°C

Thermistors

Series 400 Thermistors

0°C to 75°C

Four probe types

±0.05°C

Thermistor Standards

5640

0°C to 60°C

9" x 0.25"

±0.0015°C

5641

0°C to 60°C

4.5" x 0.125"

±0.001°C

5642

0°C to 60°C

9" x 0.125"

±0.001°C

5643

0°C to 100°C

4.5" x 0.125"

±0.0025°C

5644

0°C to 100°C

9" x 0.125"

±0.0025°C

Secondary Thermistor Probes

5665-X

0°C to 100°C

3" x 0.110"

±0.02°C

5666-X

0°C to 100°C

6" or 9" x 0.125"

±0.02°C

5610-X

0°C to 100°C

6" or 9" x 0.125"

±0.02°C

5611-X

0°C to 100°C

.110" or .070" dia.

±0.02°C

Thermocouples

Type S Thermocouple Standards

5650-20

0°C to 1450°C

20" x 0.25"

±0.7°C at 1100°C

5650-20C

0°C to 1450°C

20" x 0.25"

±0.7°C at 1100°C

5650-25

0°C to 1450°C

25" x 0.25"

±0.7°C at 1100°C

5650-25C

0°C to 1450°C

25" x 0.25"

±0.7°C at 1100°C

Other

Glass Thermometers

–38°C to 405°C

–36°F to 761°F

15" length

0.1°C Divisions

0.2°F Divisions

*Accuracy does not include long-term drift.