Hart Scientific
5618A-12 Small Diameter Industrial RTD

Click image to enlarge Hart Scientific 5618A-12-B

Features: Small diameter sheath, 0.125" (3.2mm)  Excellent stability  Includes ITS-90 coefficients  Calibrated from –200°C to 500°C  We ship Hart Scientific products only within the United States and United States territories. This DOES include US military working abroad. If you have any questions about this policy please call - 1-877-742-8378.

For secondary level performance with full ITS-90 calibration, Hart’s new 5618A series PRTs are an excellent choice for critical temperature measurements. Featuring a 1/8-inch diameter (3.2 mm) 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 radiate more heat to or from ambient air. With each probe you will receive a full calibration report traceable to NIST and compliant to ANSI/NCSL Z540. 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. The 5618A 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 our 5618A. We recommend using the 5618A PRTs with the 1521, 1522, 1502A, 1529, or 1560 thermometer readouts.

Model	Description	List Price	Sale Price
5618A-12-B	Secondary PRT Probe w/ bare wire termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-D	Secondary PRT Probe w/ 5-pin DIN termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-F	Secondary PRT Probe w/ LEMO Multi-Pin termintion, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-G	Secondary PRT Probe w/ gold pin termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-I	Secondary PRT Probe w/ INFO-CON type termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-J	Secondary PRT Probe w/ banana plug termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-L	Secondary PRT Probe w/ mini spade lug termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-M	Secondary PRT Probe w/ mini banana plug termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement
5618A-12-S	Secondary PRT Probe w/ spade lug termination, 1/8 in. (OD) x 12 in. - Discontinued - no replacement

	5618A-6	5618A-9	5618A-12
Resistance	Nominal 100W at 0°C
Temperature Coefficient	0.003923W/W/°C nominal
Temperature Range	–200°C to 500°C (–200°C to 300°C for 5618A-6-X)
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 manufacturer’s NIST-Traceable (Z540) calibration w/ITS-90 coefficients, R vs. T values in 1°C increments
Size	6"L x 1/8" diameter	9"L x 1/8" diameter	12"L x 1/8" diameter
Probe Accuracy (includes calibration uncertainty and short-term stability)	±0.05°C over entire range

Hart Scientific Main Page

Hart Scientific PRTs

Hart Scientific Price List