At Hart, we receive many requests for precision PRT accuracy at thermocouple temperatures. Until now metrologist have settled for expensive, high-temperature SPRTs or inaccurate thermocouples for high-temperature measurement.
We’re pleased to introduce the world’s finest high-temperature secondary PRT, our Model 5624.
Ideal for use as a reference thermometer in high-temperature furnaces, the 5624 can reach a temperature of 1000°C with long-term drift at 0°C of 10 mK and accuracy (including short-term stability and calibration uncertainty over the full range) of 55 mK! Due to Hart Scientific’s proprietary sensor design, this PRT has short-term stability of 5 mK, and an immersion requirement of less than 153 mm (6") at 700°C.
The 5624 is assembled in an alumina sheath that is 508 mm (20") long and 6.35 mm (0.25") in diameter. Several termination configurations can be selected to match different thermometer readouts. Each 5624 comes with a NIST-traceable, NVLAP-accredited fixed-point calibration from 0°C to 962°C. That’s a fixed-point calibration! The 5624 also comes in a protective carrying case.
0°C to 1000°C
±0.05°C at 962°C
Long-term Drift (Rtpw)
<0.01°C at 0°C/100 hours at 1000°C
<0.06°C at 0°C/1000 hours at 1000°C
<153 mm (6") at 700°C
10 ohm (±1 ohm)
<0.005°C from 0°C to 1000°C
<0.01°C, 10 cycles from 0 to 1000°C
6.35 mm (0.25") O.D.
508 mm (20")
1kg (2 lb.)
Included 1913-6 fixed-point calibration
Probe, 1000°C, 10 ohm PRT, 6.35 mm x 508 mm (0.25" x 20"), (includes 2609 case)
X = termination. Specify “B” (bare wire), “D” (5-pin DIN for 1502A), “G” (gold pins), “I” (infocon for 1521/1522), “J” (banana plugs), “L” (mini spade lugs), “M” (mini banana plugs, or “S” (spade lugs).
Cal, SPRT by Fixed Point, 0°C to 962°C
Case, SPRT, Plastic