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0.1°C High Accuracy Type T Thermocouples
Time Constant
This is the time required to reach 63% of final temperature in liquid. An accurate reading is obtained when the reading stops changing, typically 5 to 10 constants.
Maximum Temperature
Refers to intermittent use of a probe. When probe is used for continuous measurements, max. Temp. should be reduced by 25% unless specified.
Probe Sterilization Methods
Needle microprobes, clinical probes and animal rectal probes are all designed to withstand sterilization by ETO gas and gluteraldehyde solution. The flexible implantable microprobes are both ETO gas sterilizable and autoclavable.
Click Here for 0.2°C Type T Probes.
General Purpose Probes
HT-1
“Workhorse” probe for liquids, gases, semi-solids. Plastic handle with straight 3 in. stainless shaft. Not good for surface temps. Max Temp. 400°C (750°F). Time constant 0.5 secs. 5 ft. lead. Not isolated.
HT-2
Same as HT–1 but with 9 in. Shaft.
| Item | Dia. | Probe L. | Time Constant | Price | |
| HT-1 | .059" | 3" | 0.5 sec. | ||
| HT-2 | .059" | 9" | 0.5 sec. |
BT-1
For surface temperatures of solids, also for liquids, gases and semi-solids. Probably our best general purpose probe. Welded stainless-steel shaft, plastic handle. Tip is .028 in. diameter bent at right angle to probe to facilitate accurate surface measurements. 5 ft. lead. Immersible. Max tip temp. 240°C (464°F). Time constant 0.15 secs. Not isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| BT-1 | .028" | 4" | 0.15 sec. |
DPT Series
Immersion probes for liquid. #304 stainless steel welded shaft, wooden handle. 5 ft. lead. Max Temp. 400°C (750°F). Time constant 2 secs. Not isolated
| Item | Dia. | Probe L. | Time Constant | Price | |
| DPT-12 | .188" | 12" | 2 sec. | ||
| DPT-24 | .188" | 24" | 2 sec. | ||
| DPT-36 | .188" | 36" | 2 sec. |
TFT Series
Immersion probes for corrosive liquids. Similar to DPT series but shaft is Teflon® coated. Max Temp. 150°C (300°F). Time constant 3 secs. Isolated. 5 ft. lead.
| Item | Dia. | Probe L. | Time Constant | Price | |
| TFT-12 | .188" | 12" | 3 sec. | ||
| TFT-24 | .188" | 24" | 3 sec. | ||
| TFT-36 | .188" | 36" | 3 sec. |
PT-6
Sensor Six-Pack. For multi-point measurements. Inexpensive, flexible. Welded sensor beads, tough Kapton insulation, 5 ft. leads. Max Temp. 400°C (750°F). Time constant 0.01 secs. Per package of six. Not isolated.
| Item | Dia. | Time Constant | Price | |
| PT-6 | .029" | 0.01 sec. |
GT-1
Air and gas probe. 24 in. #304 stainless steel shaft, wooden handle. 5 ft. lead. For instant readings of temperature gradients in environmental chambers, freezer boxes, etc. Max Temp. 200°C (392°F). Min Temp. –200°C (-328°F). Isolated.
| Item | Dia. | Probe L. | Price | |
| GT-1 | .188" | 24" |
Clinical Probes
RET-1
Rectal probe for humans, neonatal rabbits, and larger animals. Flexible, vinyl covered, soft tipped. Does not cause discomfort. Max Temp. 90°C (194°F). Time constant 5.0 secs. 5 ft. lead. Isolated.
| Item | Dia. | Time Constant | Price | |
| RET-1 | .156" | 5 sec. |
OT-1
For fast reading oral use. Ball-tipped stainless steel shaft, stainless handle. 5 ft. lead. Max Temp. 125°C (257°F). Time constant 0.8 secs. Not isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| OT-1 | .125" | 3" | 0.8 sec. |
DSP-1
Disposable sterile sheaths for use with OT-1 and RET-1, per 1000.
| Item | Description | Price | |
| DSP-1 | Disposable Sheaths (1000) |
SST-1
Skin Surface probe, to be taped on. 1/4 in. dia. 10 Kt. gold sensor disc, 5 ft. lead. Max Temp. 90°C (194°F). Time constant 0.15 secs. Not isolated.
| Item | Dia. | Time Constant | Price | |
| SST-1 | .25" | 0.15 sec. |
SST-2
Same as SST-1 with plastic handle. Isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| SST-2 | .25" | 1.5" | 0.15 sec. |
ESO-1
Esophageal probe. Flexible vinyl covered 1/8 in. dia. Max Temp. 90°C (194°F). Time constant 5.0 secs. 5 ft. lead. Isolated.
| Item | Dia. | Time Constant | Price | |
| ESO-1 | .219" | 5 sec. |
Animal Rectal Probes
RET-2
Rectal probe for rats. For fast intermittent measurements. Smooth ball tip. Stainless steel shaft is 1 inch long and 0.059 inches in diameter. Tip diameter is .125 in. 5 ft. lead. Max Temp. 125°C (257°F). Time constant 0.8 secs. Not isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| RET-2 | .125" | 1" | 0.8 sec. |
RET-3
Rectal probe for mice, etc. Same as RET-2, with shaft 3/4 inches long and .028 in diameter. Tip diameter is .065 in. Time constant 0.5 secs. Not isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| RET-3 | .065" | .75" | 0.5 sec. |
Microprobes
Needle Microprobes
Fast-response needle probes for instant readings in tissue, semi-solids, liquids. Also for very small specimens, powders and materials. Needle tip is sealed to ensure only stainless contacts specimen. Max Temp. 200°C (392°F). 5 ft. lead. Smallest microprobes give fastest reading. Short probes are easier to insert and last longer. Item #’s indicate needle gauge and needle length in cm.
Sizes Available (ga/cm):MT-29/1, MT-29/2, MT-29/3, MT-29/5, MT-26/2, MT-26/4, MT-26/6, MT-23/3, MT-23/5, MT-23/8
MT-4 – Similar to MT-29/1 but has blunt tip. Good for instant skin and surface temperatures, liquids. Time constant .025 secs. Not isolated.
All above probes are non-isolated. Isolated versions of 23 gauge and larger needles are available for special order.
| Item | Dia. | Probe L. | Time Constant | Price | |
| MT-23/3 | 23 ga. (.025") | 3cm (1.18") | 0.15 sec. | ||
| MT-23/5 | 23 ga. (.025") | 5cm (1.97") | 0.15 sec. | ||
| MT-23/8 | 23 ga. (.025") | 8cm (3.15") | 0.15 sec. | ||
| MT-26/2 | 26 ga. (.018") | 2cm (.79") | 0.1 sec. | ||
| MT-26/4 | 26 ga. (.018") | 4cm (1.56") | 0.1 sec. | ||
| MT-26/6 | 26 ga. (.018") | 6cm (2.36") | 0.1 sec. | ||
| MT-29/1 | 29 ga. (.013") | 1cm (.39") | 0.025 sec. | ||
| MT-29/2 | 29 ga. (.013") | 2cm (.79") | 0.025 sec. | ||
| MT-29/3 | 29 ga. (.013") | 3cm (1.18") | 0.025 sec. | ||
| MT-29/5 | 29 ga. (.013") | 5cm (1.97") | 0.025 sec. | ||
| MT-4 | 29 ga. (.013") | 1cm (.39") | 0.025 sec. |
Flexible Implantable Microprobes
IT Series – Implantable in semi-solids and tissue with needle (supplied). Also for immersion in various solutions and rectal temperatures of small animals. Totally sheathed in chemical resistant Teflon™. Quite rugged. Max Temp. 150°C (302°F). Isolated. Item # designates needle gauge. (or one gauge smaller in thin wall).
| Item | Dia. | Length | Time Constant | Price | |
| IT-14 | .050" | 36" | 0.3 sec. | ||
| IT-18 | .025" | 36" | 0.1 sec. | ||
| IT-21 | .016" | 12" | 0.08 sec. |
IT-23
For ultra fast measurements and for use on micro-size specimens. Max diameter at tip 0.011 in. Tissue implantable with 23 ga. needle (supplied). Rather fragile. Max Temp 150°C (302°F). Time constant 0.005 secs. 3 ft. lead. Teflon™ coated. Isolated.
| Item | Dia. | Time Constant | Price | |
| IT-23 | .009" | 0.005 sec. |
IT-1E
Same as IT-18 but sensor bead exposed. Combines the ultra-fast response of IT-23 with the Teflon™ sheath strength of IT-18. Time constant .005 secs. Isolated.
| Item | Dia. | Time Constant | Price | |
| IT-1E | .009" | 0.005 sec. |
MT-D
Fast response surface probe for locating inflammation, arteries, etc. Also for dental use. Stainless steel. 5 ft. lead. Max Temp. 200°C (392°F). Time constant 0.025. Not Isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| MT-D | .013" | .375" | 0.025 sec. |
ICT-4
For use on integrated circuits and other micro specimens. 0.013 in. dia. Straight stainless steel shaft; slightly protruding sensor bead to facilitate temperature probing. 5 in. tubular handle fits micro manipulators. Max. intermittent temp. 200°C (392°F), continuous use 100°C (212°F), Time constant 0.025 secs. 5 ft. lead. Not isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| ICT-4 | .013" | .5" | 0.025 sec. |
MT-29/1B – Insect Probe
Similar to MT-29/1 but sensor is swaged into tip for max heat transfer. Designed for high accuracy on extremely small specimens such as insects, seeds, etc. Max. insertion depth 1/8 in. Time constant 0.015 secs. 5 ft. lead. Max Temp. 150°C (302°F). Other sizes made to special order. Not isolated.
| Item | Dia. | Probe L. | Time Constant | Price | |
| MT-29/1B | .29 ga. (.013") | .125" | 0.015 sec. |