Fluke - Hart 5610, 5611A, 5611T, 5665 Secondary Reference Thermistor Probes

Product Overview:

  • Short-term accuracy to ± 0.01 °C; one-year drift < ± 0.01 °C
  • Accredited NVLAP calibration optional
  • Flexible PTFE and silicone coated fast-response models
  • Rugged polished stainless steel sheaths

More

These temperature probes are available in a variety of sheath materials appropriate for your specific application. In addition to our metal-sheathed temperature probes, we offer flexible PTFE encapsulated and silicone coated thermistors that have smaller tips and can measure those places where even a metal-sheathed thermistor can't reach.

PTFE encapsulated thermistor
The 5611T is an especially versatile PTFE coated thermistor probe. With a PTFE encapsulated tip that is just 3 mm (0.12 in) in diameter and a PTFE coating that makes it impervious to most liquids, the PTFE Probe is handy for measuring in a wide variety of applications, including bio-pharmaceuticals. It's even immersible to nearly 20 feet and flexible enough that you could roll it up into a ball in your hand if you wanted to!

The 5611T's thermistor bead is encapsulated in a Mylar sleeve that is encapsulated inside a PTFE sleeve. The PTFE sleeve is then melted around the PTFE-insulated cable, forming a moisture-proof seal.

Stainless steel sheathed thermistors
Our stainless steel metal-sheath probes include our 5610-6 and 5610-9 immersion probes, as well as our 5665 fully immersible probe. These probes are great for measuring in air, liquid or soil.

Silicone coated thermistor
With a diameter at the tip of just 1.5 mm (0.06 in), the 5611A's tip has the smallest diameter of any of our secondary reference thermistors and can fit nearly anywhere. Its faster response time, flexible sheath, and silicone coating make the 5611A great for use in many applications. However, applications involving silicone oil could damage the thermistor and should be avoided.

Higher performance
All Fluke Calibration secondary reference thermistors have small diameters and very small sensing elements, which means they require far less immersion than a PRT to avoid errors caused by stem effect. Self heating is usually negligible, giving them an advantage when taking measurements in air. Their small size also improves response time, allowing measurements to be taken more quickly.

If your application involves frequent handling, you'll be especially interested to know thermistors are less susceptible to mechanical shock than PRTs. The bottom line may be better accuracy in fieldwork.

Additionally, higher base resistance and larger resistance coefficients make it easier to achieve precision readings with thermistors, so better resolution and accuracy are possible for a lower cost. All of these thermistors have a negative temperature coefficient of resistance (NTC).

Readouts
These probes come in a complete assembly ready for use, and each works well with the uncertainties of our thermometer readouts: the 1504 Tweener, the 1523 and 1524 Handheld Thermometers, the 1529 Chub-E4, the 1560 Black Stack, and the 1575A and 1590 Super-Thermometers.

These probes provide most accurate readings when coupled with a 2563 Standards Thermistor Module or 1590 Super-Thermometer, but they are most portable when used with a handheld reference thermometer.

Calibrated accuracy
What's more, the Secondary Reference Series Thermistors are accurate to ± 0.01 °C and cover the temperature range of 0 °C to 100 °C. They come with a NIST-traceable calibration and a resistance-versus-temperature table printed in 0.1 °C increments that can be interpolated to 0.0001 °C. NVLAP accredited calibrations as single thermistors or as systems combined with their readouts, are also available.

No other sensors can match the accuracy and price combination of these high-accuracy thermistor probes. Try one and you'll agree.

Specifications
Resistance
  Nominal 10,000 Ω at 25 °C
Range
  0 °C to 100 °C
Calibration
  R vs. T table with 0.1 °C increments, interpolation equation furnished
Calibration uncertainty
  Table and equation are accurate to ±0.01 °C
Drift
  Better than ±0.01 °C per year
Repeatability
  Better than ±0.005 °C
Size and Construction
  See illustrations below.
Termination
  Specify when ordering.

More Product Information

  • 5608: –200 °C to 500 °C (80 mm minimum immersion)
  • 5609: –200 °C to 670 °C (100 mm minimum immersion)
  • ± 0.01 short-term stability
  • Calibration not included, NVLAP-accredited calibration optional, lab code 200348-0
  • Dry-well reference with 90 ° bend

  • Full HART Device Description (DD) support of all HART devices
  • Configure HART devices
  • Perform HART trim on HART devices when used with a Fluke 750 or 720 series calibrator
  • Monitor device PV, SV, TV, QV and other measured HART variables
  • Quarterly HART DD updates for free
  • Convenient wireless connectivity to HART modem
  • Easy to use, fast connect and view HART data
  • Store HART device configurations
  • Long range wireless communication up to 250 feet

  • Full-featured documenting process calibrator with HART communication for calibrating and troubleshooting HART instrumentation.
  • Measures volts, mA,TDs, thermocouples, frequency, and ohms to test sensors, transmitters and more
  • Sources/simulates volts, mA, thermocouples, RTDs, frequency, ohms, and pressure to calibrate transmitters
  • Powers transmitters during test using loop supply with simultaneous mA measurement

  • Lower uncertainties than comparison calibrations
  • All ITS-90 fixed points from TPW to copper
  • Reduced equipment and annual recalibration costs

  • mA precision loop calibrator that communicates with and tests HART smart instruments
  • Features best-in-class accuracy at 0.01% reading
  • Provides intuitive user interface with Quick-Set knob for fast setup
  • Includes built in selectable 250 Ω resistor for HART communication
  • Features 24 V DC loop power with mA measure mode (-25% to 125%)

  • Ultimate troubleshooting tool for electricians and instrumentation professionals
  • Combines the functionality of a loop calibrator with the power of a precision 1000 V, 440 mA True-RMS digital multimeter
  • Optional IR3000FC module for wireless data logging capabilities via Fluke Connect® mobile App
  • Includes 24 V loop power supply
  • Features a very large dual display with enhanced two-level backlight brightness settings

The Fluke 975 offers an unparalleled featureset for HVAC and facilities technicians, helping them work more quickly and accurately, with the ease of use and durability customers expect from a Fluke meter.
Simultaneously measures, logs, and displays temperature, humidity, CO2, and CO on a bright, backlit LCD display
  • One-touch air flow and velocity with available probe*
  • Wet bulb and dew point temperature
  • % of outside air calculation
  • CO2 and CO field calibration feature
  • Self-test function at startup
  • Auto-backlight
  • Automatically compensates for barometric pressure changes
  • Min/Max/Average on all measured and calculated readings
  • Multi-language user interface
  • Metric or standard units
  • Audible and visual threshold alarms
  • Extensive discrete or continuous data logging capacity, downloadable to PC via USB interface
  • Keypad lock for security
  • Included FlukeView Forms® software
*Included with Fluke 975V, optional with Fluke 975

  • Rugged, compact, easy to use stroboscope for checking the rotating speed of machinery without physical contact or the need for reflective tape
  • Features high-intensity 7-LED array—4,800 Lux @ 6,000 FPM/30cm
  • Provides a high-efficiency LED solid-state light source with uniform flash characteristics that allow for higher flash rates—30-300,000 FPM (flashes per minute)

  • Precise laser technology for more accurate and repeatable measurements
    • Temperature accuracy of up to ± 1℃ or ± 1% of reading whichever is greater with 20:1 distance to spot ratio
  • Flashlight and large, easy-to-read backlit LCD display for easy viewing even in dark environment
  • IP54 rated for extra protection against airborne contaminants
  • Get your tool to work when you can't - set time and desired interval between measurements and Auto Capture will capture spot temperatures unattended
  • 99 data point logging
  • 30 hour battery life so your tool can perform as long as you need it to
  • Displays the minimum, maximum or average temperature, or the difference between two measurements
  • Hi and Lo alarms for rapid display of measurements outside set limits
  • Small and lightweight design fits easily into your tool box
  • Powered by one (1) AA alkaline battery

Fluke Corporation

Since its founding in 1948, Fluke has helped define and grow a unique technology market, providing testing and troubleshooting capabilities that have grown to mission critical status in manufacturing and service industries. Every new manufacturing plant, office, hospital, or facility built today represents another potential customer for Fluke products.

From industrial electronic installation, maintenance and service, to precision measurement and quality control, Fluke tools help keep business and industry around the globe up and running. Typical customers and users include technicians, engineers, metrologists, medical-device manufacturers, and computer network professionals — people who stake their reputations on their tools, and use tools to help extend their personal power and abilities.

Fluke has achieved the number one or number two position in every market in which it competes. The Fluke brand has a reputation for portability, ruggedness, safety, ease of use and rigid standards of quality.

Contact Details

Fluke Corporation Headquarters

6920 Seaway Blvd., Everett, WA 98203

Mailing address: PO Box 9090, Everett, Washington 98206-9090

Phone: 1-425-347-6100

Technical Support Email: fluke-info@fluke.com


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