Fluke 5606 Specifications

5606 and 5607

Full Immersion PRTs

for laboratory freezers,

autoclaves, and furnaces

• 5606: -200 °C to 160 °C

• 5607: 0 °C to 450 °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

• Calibration not included; NVLAP-accredited
calibration optional

Technical Data

The 5606 and 5607 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, walk­in 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 non­corrosive liquids or dry mediums
ranging from –200 °C to 160 °C.
The 100 W 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.

Are you performing calibra­tions or verifying the accuracy
of sensors used in ovens or
furnaces? The 5607 has been
designed specifically for your
application. Intended to be used
in dry mediums only, the 5607
can be fully immersed over a
temperature range of 0 °C to
450 °C. There isn’t another PRT
on the market that can be fully
immersed over this range and
remain as stable and accurate
(± 0.055 °C). The lead wire
of the 5607 is shielded with
braided stainless steel and con­nected to the transition junction
with a strain relief spring.

If you need longer lead wire
than the standard length, call
one of our Application Special­ists today for a free quote.
They can also help you deter­mine which readout and probe
termination are best suited for
your application or help you
select the right calibration for
your probe.

Specications

Specifications 5606 5607

Temperature range -200 °C to 160 °C 0 °C to 450 °C

Nominal resistance at 0.01 °C

Temperature coefficient

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 Inconel

Transition junction temperature

[4]

range

-200 °C to 160 °C 0 °C to 450 °C

Transition junction dimensions No transition

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 MW at 23 °C 100 MW at 23 °C

Minimum immersion length Full immersion Full immersion

Maximum immersion depth in
liquid medium

Maximum immersion depth in dry
medium

Response time

[5]

Full immersion

Full immersion Full immersion

12 seconds typical 9 seconds typical

Self heating (in 0 °C bath) ± 0.003 °C

Lead-wire cable type Enameled copper wire SST over-braid

Lead-wire length 2.4 meters (8 ft)

Lead-wire temperature range 160 °C 450 °C

Calibration

[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 not included. NVLAP accredited calibration available. See
ordering information.

100 W ± 0.1 W

0.00385 W/W/°C

± 0.04 °C at 0.01 °C

± 0.07 °C at 450 °C

± 0.020 °C at 0.01 °C

± 0.035 °C at 450 °C

± 0.02 °C at 0.01 °C

± 0.04 °C at 450 °C

40 mm ± 5 mm
(1.6 in ± 0.2 in)

®

35 mm x 7 mm
(1.4 in x 0.3 in)

Use SST or glass tube to protect

transition junction

600

2 Fluke Calibration 5606 and 5607 Full Immersion PRTs