5606 Full Immersion PRT

PRTs for laboratory freezers, autoclaves, and furnaces

5606: -200 °C to 160 °C
Calibration accuracy of ± 0.05 °C
Transition junction and lead wires can withstand full PRT temperature range
Unique probe seal of 5606 prevents ingress of moisture
NVLAP-accredited calibration

The 5606 Full Immersion PRTs are designed to perform in extreme environments where both the transition junction and the lead wires are required to withstand temperatures covering the entire operating range of the probe. (“Immersion” in this case simply means exposure to temperatures other than ambient and does not necessarily refer to the medium to which the PRT and its components are subjected.)

Applications where “full immersion” of probe, transition junction, and lead wire is required can include calibration or validation of sensors used in laboratory or bio freezers, walk-in refrigerators, autoclaves, ovens, stability test chambers, furnaces or incubators. Other applications might include IQ/ OQ/PQ qualification procedures, temperature mapping, or data logging in temperature controlled spaces or environmental chambers.

The 5606 is just two inches (50 mm) in length with a sheath diameter of 1/8 inch (3.1 mm). Since it can be fully immersed over its entire temperature range, you don’t have to worry about calculating minimum immersion depth— immerse the entire probe, transition junction, and lead wires, in either non-corrosive liquids or dry mediums ranging from –200 °C to 160 °C.

The 100 Ω precision sensing element (alpha = 0.00385) is specially constructed to prevent the ingress of moisture while achieving calibration accuracies as good as ± 0.05 °C. You get both accuracy and flexibility built into a small, durable package.

The lead wires of the 5606 are made of single-conductor enameled copper wire which prevents moisture from wicking to the sensing element as it would if a more common, stranded lead wire were used. The diameter of the lead wire is no greater than 0.2 mm, making it easy to run lead wires through a freezer door to your readout or transmitter with effectively zero energy loss. The 5606 has been proven in common heat transfer fluids such as silicone oil, mineral oil, ethanol, and even liquid nitrogen with no degradation of the transition junction seal or lead wire insulation.

General Specifications

Temperature range

–200 °C to 160 °C

Nominal resistance at 0.01 °C

100 Ω ± 0.1 Ω

Temperature coefficient

0.00385 Ω/Ω/°C

Accuracy[1]

± 0.04 °C at 0.01 °C

± 0.06 °C at 160 °C

Short-term repeatability[2]

± 0.03 °C at 0.01 °C

± 0.04 °C at 160 °C

Drift[3]

± 0.03 °C at 0.01 °C

± 0.04 °C at 160 °C

Hysteresis

± 0.015 °C

Sheath length

50 mm ± 5 mm

(2 in ± 0.2 in)

Sheath diameter

3.1 mm ± 0.1 mm (1/8 in ± 0.004 in)

Sheath material

316 SST

Transition junction temperature range[4]

–200 °C to 160 °C

Sensor length

30 mm ± 3mm (1.2 in ±0.1 in)

Sensor location

3 mm ± 1 mm from tip (1.2 in ± 0.04 in)

Minimum insulation resistance

20 MΩ at 23 °C

Minimum immersion length

Full immersion

Maximum immersion depth in liquid medium

Full immersion

Response time[5]

12 seconds typical

Self heating (in 0 °C bath)

± 0.003 °C

Lead-wire cable type

Enameled copper wire

Lead-wire length

2.4 meters (8 ft)

Lead-wire temperature range

160 °C

Calibration

NVLAP accredited calibration included, lab code 200348-0

[1] Includes calibration and 100 hr drift (k = 2).
[2] Three thermal cycles from min to max temp, includes hysteresis, 95 % confidence (k = 2).
[3] After 100 hours at max temp, 95 % confidence (k = 2).
[4] Temperatures outside this range will cause irreparable damage.
[5] Per ASTM E 644.

Calibration uncertainty
	5606
Temperature	1924 Calibration Uncertainty†
-197 °C	0.03 °C
-38 °C	0.03 °C
0 °C	0.03 °C
100 °C	0.045 °C
157 °C	0.05 °C
^† Lab code 200348-0 5606 meets ASTM E 1137 Grade A Classification of Tolerances. R0: Enter the R0 value provided

Model Name	Description
5606-50-X	Probe, Immersion PRT, 50 mm, –200 to 160 °C (No calibration included. See recommended calibration options below. Contact your Fluke Calibration representative for additional calibration options.) X = termination. Specify “A” (INFO-CON for 914X), “B” (bare wire), “D” (5-pin DIN for Tweener Thermometers), “G” (gold pins), “J” (banana plugs), “L” (mini spade lugs), “M” (mini banana plugs), “P” (INFO-CON for 1523 or 1524), or “S” (spade lugs).

Model Name

Description

5606-50-X

Probe, Immersion PRT, 50 mm, –200 to 160 °C

(No calibration included. See recommended calibration options below. Contact your Fluke Calibration representative for additional calibration options.)

X = termination. Specify “A” (INFO-CON for 914X), “B” (bare wire), “D” (5-pin DIN for Tweener Thermometers), “G” (gold pins), “J” (banana plugs), “L” (mini spade lugs), “M” (mini banana plugs), “P” (INFO-CON for 1523 or 1524), or “S” (spade lugs).

Accessories common to all models:

Accessory	Description
2603	Small Probe Carrying Case
1924-4-10	PRT Calibration, –200 °C to 157 °C, NVLAP accredited
1930-4-10	System calibration by comparison (probe and thermometer readout combined as a system , –200 °C to 157 °C, NVLAP accredited

Product Manuals
5606/5607 User’s Guide (English) (281.16 KB)
5606/5607 User’s Guide Supplement (315.56 KB)

Application Notes
Industrial temperature readout and probe selection guide (1.06 MB)
Does Immersion Depth Really Matter? (745.44 KB)

Papers / Articles
Platinum Resistance Thermometers (PRT)

Press Releases
New full immersion probes from Hart Scientific are designed to perform in extreme environments

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5606 Full Immersion PRT

PRTs for laboratory freezers, autoclaves, and furnaces

Accessories common to all models:

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