Hart Scientific 5618B
Small Diameter Industrial RTD

Small diameter sheath, 3.2mm (0.125")
Excellent stability
Includes ITS-90 coefficients
NVLAP-accredited calibrated from -200 to 500°C

For secondary level performance with full ITS-90 calibration, Hart's 5618B series PRTs are an excellent choice for critical temperature measurements. Featuring a 3.2 mm diameter (1/8 in) sheath, these industrial standards probes have reduced response time without compromising precision. This small diameter 5618A probe works well in many applications where immersion depth is limited. Larger diameter probes give more measurement error in short immersion depth applications because they conduct more heat between ambient and the sensor.

5618B Shown

Product Information
Datasheet	104 KB
Ordering Info
PDF Help

With each probe you will receive a full NVLAP-accredited calibration report. On the report you'll get the test data and the ITS-90 calibration coefficients that you can easily input into your Hart thermometer. If you are using a 1521 Handheld Thermometer readout, we'll program the coefficients directly into your INFO-CON connector.

5618B is also a great probe to use for calibrating your Hart 9132 or 9133 infrared calibrators. In fact, these IR black body heat sources were designed to be calibrated with this type of probe. Now you can calibrate these targets in your own lab!

For use from -200 °C to 500 °C (the six-inch model goes to 300 °C), you won't find a better industrial standard in this configuration than Hart's 5618B. We recommend using the 5618B PRTs with the 1521, 1522, 1502A, 1529, or 1560 thermometer readouts.

Specifications
Resistance	Nominal 100W at 0 °C
Temperature Coefficient	0.003923W/W/ °C nominal
Temperature Range	5618A-12, 5618A-9: -200 to 500 °C 5618A-6: -200 to 300 °C
Drift Rate	±0.1 °C when used periodically to 500 °C
Sheath Material	316 SST
Leads	22 AWG Teflon, 6'
Termination	Specify
Hysteresis	Less than 0.01 °C at 0 °C when using -196 °C and 420 °C as the end points.
Time Constant	9 seconds max for 63.2 %
Thermal EMF	Less than 25 mV at 420 °C
Calibration	Includes NVLAP-accredited calibration w/ITS-90 coefficients, R vs. T values in 1 °C increments
Size	5618B-12: 305 mm L x 3.2 mm dia. (12 x 1/8") 5618B-9: 229 mm L x 3.2 mm dia. (9 x 1/8") 5618B-6: 152 mm L x 3.2 mm dia. (6 x 1/8")
Probe Accuracy (includes calibration uncertainty and short-term stability)	±0.05 °C over entire range

Ordering Information
Model	Size Length x Diameter	Type	Temp. Range	Buy	Price
5618B12B	12 x 1/8" Dia.	Bare Wire	-200 to 500 °C		$869.00
5618B12D	12 x 1/8" Dia.	5-pin DIN for Tweener Thermometers	-200 to 500 °C		$869.00
5618B12F	12 x 1/8" Dia.	LEMO Multi-Pin	-200 to 500 °C		$765.00
5618B12G	12 x 1/8" Dia.	Gold pins	-200 to 500 °C		$765.00
5618B12I	12 x 1/8" Dia.	INFO-CON for 1521/1522	-200 to 500 °C		$869.00
5618B12J	12 x 1/8" Dia.	Banana Plugs	-200 to 500 °C		$869.00
5618B12L	12 x 1/8" Dia.	Mini Space Lugs	-200 to 500 °C		$815.00
5618B12M	12 x 1/8" Dia.	Mini Banana Plugs	-200 to 500 °C		$765.00
5618B12S	12 x 1/8" Dia.	Spade Lugs	-200 to 500 °C		$869.00
5618B9B	9 x 1/8" Dia.	Bare Wire	-200 to 500 °C		$869.00
5618B9D	9 x 1/8" Dia.	5-pin DIN for Tweener Thermometers	-200 to 500 °C		$869.00
5618B9F	9 x 1/8" Dia.	LEMO Multi-Pin	-200 to 500 °C		$765.00
5618B9G	9 x 1/8" Dia.	Gold pins	-200 to 500 °C		$765.00
5618B9I	9 x 1/8" Dia.	INFO-CON for 1521/1522	-200 to 500 °C		$815.00
5618B9J	9 x 1/8" Dia.	Banana Plugs	-200 to 500 °C		$765.00
5618B9L	9 x 1/8" Dia.	Mini Space Lugs	-200 to 500 °C		$869.00
5618B9M	9 x 1/8" Dia.	Mini Banana Plugs	-200 to 500 °C		$765.00
5618B9S	9 x 1/8" Dia.	Spade Lugs	-200 to 500 °C		$869.00
5618B6B	6 x 1/8" Dia.	Bare Wire	-200 to 300 °C		$869.00
5618B6D	6 x 1/8" Dia.	5-pin DIN for Tweener Thermometers	-200 to 300 °C		$869.00
5618B6F	6 x 1/8" Dia.	LEMO Multi-Pin	-200 to 300 °C		$765.00
5618B6G	6 x 1/8" Dia.	Gold pins	-200 to 300 °C		$765.00
5618B6I	6 x 1/8" Dia.	INFO-CON for 1521/1522	-200 to 300 °C		$869.00
5618B6J	6 x 1/8" Dia.	Banana Plugs	-200 to 300 °C		$765.00
5618B6L	6 x 1/8" Dia.	Mini Space Lugs	-200 to 300 °C		$869.00
5618B6M	6 x 1/8" Dia.	Mini Banana Plugs	-200 to 300 °C		$765.00
5618B6S	6 x 1/8" Dia.	Spade Lugs	-200 to 300 °C		$869.00
Optional Accessories
2601	Fluke Hart 2601 Probe Carrying Case				$81.00

Hart Scientific 5618B Small Diameter Industrial RTD

Hart Scientific 5618B
Small Diameter Industrial RTD