The probe is the cheap part of temperature measurement, and the part that fails.
What the manufacturer publishes
Type K thermocouple connectors with a 3 m (10 ft) cable length. A measuring range of −40 °C (-40 °F) to 350 °C (662 °F). Stated for general temperature applications, with a fast response time. Supplied as five pieces.
Type K, and why the standard matters
A thermocouple is two dissimilar metals joined at a point; the junction produces a small voltage that depends on temperature. Type K defines which metals, so any type K probe on any type K instrument reads the same. That interchangeability is why a five-pack of probes is a sensible purchase and a five-pack of instruments is not.
What the 350 °C (662 °F) ceiling really is
It is the lead, not the junction. Type K junctions work far hotter; the insulation on a 3 m (10 ft) flexible lead does not. For higher temperatures the probe needs a sheath and a short lead, which is a different product.
Availability
No such listing: the American Amazon shop answers the reference with a search box rather than a page.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
What gets asked here
Will a type K probe work on any meter?
On any meter with a type K input, yes — the type defines the metals and therefore the voltage the junction produces. What varies is the miniature flat plug, and polarity is set by the plug rather than by color alone.
Why buy five?
Because most temperature questions are comparisons. A flow and a return, an inlet and an outlet, four points across a wall — one probe answers half the question at a time.
What limits the 350 °C (662 °F) figure?
The lead insulation, not the junction. Type K itself reads far higher; a probe is rated by whichever part melts first.
A clamp that carries Klein's part number in its own title and claims double the original's range for half the price.
Type and plug fit
Type K, stated, and the BANANA PLUG ADAPTER IS INCLUDED — which is the genuine advantage over the Klein 69140, where the adapter is Cat. No. 69146 and sold separately. ZIBOO then notes that the adapter is "also sold separately (Cat. No. 69146)", quoting Klein's catalog number for a part it has put in its own box
Probe style
A PIPE CLAMP, closing round pipes from 1/4 to 1 1/2 inch — an eighth of an inch more than the Klein 69140 claims. Like that clamp, it is a style this shelf's introduction does not name among its bead, pad and rod
Stated temperature range
−40 to 392 °F (−40 to 200 °C), claimed. The Klein 69140, whose part number is in this product's title, states −4 to 212 °F (−20 to 100 °C). That is NEARLY TWICE the span, and twice the ceiling, on a copy that costs $14.99 against $26.98. Nothing on either page explains the difference, and a clamp reading 200 °C (392 °F) would reach a hot gas discharge line the original cannot
Stated accuracy
±2%, the same figure the Klein 69140 gives, followed by the same sentence: "Thermocouple accuracy is dependent on the accuracy of the meter being used." The wording of this listing follows the Klein listing bullet for bullet — wide temperature range, versatile pipe clamp, flexible lead, universal compatibility, dependable accuracy — in the same order
Cable length
39.78 inches, 102 cm, flexible. The Klein 69140 states 40 inches for the same 102 cm (40.2 in). Thirty-nine point seven eight inches is 101.04 cm (39.8 in), so the figure has been converted from the metric and given to two decimals rather than measured
Clamp capacity
Pipes 1/4 to 1 1/2 inch, then "(up to 35 cm (13.8 in))" — the same parenthesis that appears on the Klein page, where it is equally wrong. One and a half inches is 38 Millimeters. Thirty-five centimeters is not a pipe this clamp or any other on this shelf would close around
Also stated
The reference field reads 69028+69146 — two Klein Tools catalog numbers concatenated, 69146 being the banana adapter. The title opens "ZIBOO 69140 K-Type Thermometer", and 69140 is the Klein part number of the clamp sitting next to it in this same relevé. The brand on the box is ZIBOO; the part numbers on the listing are all somebody else's
Amazon reference
B0DKFKSTNG
EAN
0736483405789
The banana adapter is in the box
Minus forty to two hundred degrees claimed, twice the Klein
It sells under another maker's part number
Best for: HVAC pipe work on a budget, where the adapter in the box and the wider claimed range are worth the unverified specification
A two-channel delta-T instrument with its own beaded probes, and the only thing on this shelf you can calibrate.
Type and plug fit
TWO type K channels, with "wrap tab beaded thermocouples" included. Fieldpiece lists an optional ATWB1 wet bulb thermocouple as a further accessory. An LED indicates a DISENGAGED PROBE — a plug that has worked loose — which is the only answer on this shelf to the problem this shelf's introduction raises about plugs, approached from the instrument end rather than the probe end
Probe style
WRAP-TAB BEADED, supplied. A bead is the fast-response style this shelf's introduction assigns to air, and a wrap tab lets the same bead be strapped to a pipe or a fin. Two of them, because the instrument exists to read a difference
Stated temperature range
−58 to 2000 °F (−50 to 1300 °C), stated. That is the widest span on this shelf by a long way — 1350 Celsius degrees, against 1100 for the Nxtop probe, 480 for the Klein 69142 and 100 for the Klein 69140 clamp. It is the instrument's range; what any given reading can reach depends on the thermocouple fitted, and the supplied beads are not 1300 °C (2372 °F) parts
Stated accuracy
NOT PUBLISHED. What is published instead is more unusual: TWO FRONT-FACE CALIBRATION POTS, one per channel. This is the only instrument on this shelf that can be adjusted by its owner, which is a different proposition from a stated tolerance — it means the reading can be matched to a reference rather than trusted as supplied
Functions
Reads T1, T2 or T1−T2, with the difference "in big numbers on the LCD". Min/Max and Hold. Fieldpiece states "great temperature compensation for fast changing environments", which is the figure a two-channel meter lives or dies by and is given here as a claim rather than a number
Cable length
Not stated for the supplied thermocouples. No length is published for either of the two thermocouples it ships — the one figure of the hub’s five that this page omits
Construction and safety
A rugged rubber boot, and a clear-front case with the ANC6 magnetic hanger included. A magnetic hanger on an HVAC job is not a nicety: it puts the meter on the side of the unit at eye level while both hands are in the cabinet
Also stated
386 grams — five times the 78 g (2.8 oz) of the Nxtop, the next heaviest probe here. At $119 it is also the most expensive, and it is a different kind of purchase from the rest of the shelf: four of these five products are probes for a meter you already own, and this one is the meter
Amazon reference
B000OLCD9Q
EAN
0735090638122
Two channels and a direct T1−T2 reading
Two calibration pots — the only adjustable thing here
No accuracy figure at a hundred and nineteen dollars
Best for: Finding a temperature split across a coil, where the difference between two readings is the measurement and not either reading alone
The genuine Klein pipe clamp — and the narrowest temperature range on this shelf, at the highest price of the two clamps.
Type and plug fit
Type K, stated. "Works with any digital multimeter or clamp meter that measures temperature", and Klein adds that its K-type accessories work with all Klein multimeters and clamp meters that measure temperature "as well as any other brand with meters that measure temperature". The banana plug adapter is NOT in the box: it is Cat. No. 69146, sold separately — which matters because this shelf's introduction says the plug is where fit fails
Probe style
A PIPE CLAMP, which is a fourth style this shelf's introduction does not name. It lists a bead for air, a flat pad for surfaces and a sheathed rod for immersion; a spring clamp that closes round a pipe reads the outside wall of a line you cannot immerse anything in. It is the dominant style in the American relevé for this shelf, because that is how a refrigeration circuit is diagnosed
Stated temperature range
−4 to 212 °F (−20 to 100 °C), stated. That is the NARROWEST range on this shelf: the published Taiss states −40 to 350 °C (-40 to 662 °F), the Nxtop 0 to 1100 °C (32 to 2012 °F), the Klein 69142 beside it 0 to 480 °C (32 to 896 °F), and the ZIBOO clamp that borrows this part number claims −40 to 200 °C (-40 to 392 °F). One hundred degrees Celsius is the top of it, which covers a heating flow and stops below a hot gas line
Stated accuracy
±2%, stated — and then the sentence that makes it honest: "Thermocouple accuracy is dependent on the accuracy of the meter being used." Two probes on this shelf publish a figure at all — this clamp and the ZIBOO — and both add that caveat. It is the right way to put it: a thermocouple generates a voltage, and what turns that voltage into a number is the instrument
Cable length
40 inches, 102 cm, flexible. The ZIBOO clamp states 39.78 inches for the same 102 cm (40.2 in), which is the same lead described to two decimal places. The published Taiss five-pack gives 3 m (10 ft), three times either clamp
Clamp capacity
Pipes from 1/4 to 1-3/8 inch diameter. The ZIBOO clamp claims 1/4 to 1 1/2 inch — an eighth of an inch more. Both listings then add "up to 35 cm (13.8 in)", which is not a pipe diameter at all and appears on both pages
Heat resistance
Not stated separately from the measuring range. Klein positions this as the accessory that "extend[s] working temperature ranges for Klein's HVAC Digital Multimeters and Clamp Meters", and names the rest of the family: high temperature thermocouple wire, temperature probe and banana plug adapter
Amazon reference
B07B2PPBRB
EAN
0092644690679
Type K, so it reads correctly on any type K meter
A clamp, which is what a pipe actually needs
A hundred degrees Celsius is the narrowest ceiling here
Best for: HVAC pipe temperatures on small-bore copper, read through a Klein or any other meter with a temperature function
The only set here that extends: three feet of lead plus three feet of adapter, in a case you can wear.
Stated rating
CAT III 1000 V / CAT IV 600 V, stated — the same pairing as the two other Klein sets, and these three are the only CAT IV items on this shelf. The rating is given for the kit rather than itemized per part, which is worth noting on a set whose whole point is that the parts screw together
Length and reach
3-FOOT right-angle lantern-style leads PLUS 3-FOOT extension adapters — six feet, 183 cm, assembled. That is the longest reach on this shelf by a clear margin: the longest single lead here is the PUKAIBUL at 125 cm (49.2 in) and the published PeakTech is 120 cm (47.2 in). A meter hung on a magnet at the side of a cabinet while the probes reach the far end of a board is what this buys
Plugs and tips
Right-angle, LANTERN-STYLE tips, with removable threaded lead HEADS that connect either directly to the right-angle leads or to the extenders. A lantern tip is a sprung sleeve round the probe that grips a terminal rather than resting against it. No shrouding is described for the plugs
Insulation
NOT NAMED, as on both other Klein sets. This shelf's introduction compares silicone against PVC for cold flexibility, and this listing describes the case in more detail than the cable
Supplied
Two right-angle leads, two extenders, two removable lead heads, two screw-on alligator clips, and a carrying case with elastic straps for the heads, pockets for the leads and a BELT LOOP. Nine pieces and a case. 322 grams — the heaviest Klein item on this shelf
Also stated
Klein positions it as "an upgrade or replacement lead kit compatible with clamp meters, multimeters, or other test equipment with standard lead connections". The threaded heads are the mechanism that makes the kit modular: a clip, a probe head and an extender all take the same thread
Amazon reference
B0F167XRH8
EAN
0092644694837
Six feet of reach, the longest on this shelf
CAT III 1000 V and CAT IV 600 V
Fifty dollars, the most expensive of the three Klein sets here
Best for: A meter that has to stay put while the probes go somewhere else — a cabinet at head height, a board across a room
A kit built entirely around reading a connector from behind, rated 30 volts — the lowest on this shelf by a factor of thirty.
Stated rating
TWO RATINGS ON ONE PAGE. The back probes are stated for "testing up to 30 Volts for Connectors, Automotive Sensors and Fuel Injectors", and the alligator clips separately as "CATII 300Vac/15A". The description then gives "Rated Voltage: 30V" for the kit. Thirty volts is the LOWEST figure on this shelf by a factor of thirty, and it is the right one to believe: a kit is rated by its weakest part, and these are 0.07 mm (0.003 in) needles
Insulation
SOFT PVC, stated — "Cable Material: Soft PVC". It is the ONLY product on this shelf whose insulation is named as PVC, and this shelf's introduction says in so many words that silicone "stays flexible in the cold where PVC goes stiff and cracks". Five sets on this shelf name silicone; the three Klein sets name nothing; this one names the material the hub warns about
Probes and angles
15 BACK PROBE PINS in stainless steel, at THREE angles — 90°, 135° and straight — in five colors, with 0.07 mm (0.003 in) needle tips. Three angles is the specification that makes the kit: a connector you can reach from directly behind takes a straight pin, one in a loom against a bulkhead takes 90°, and 135° is for everything in between. No other product on this shelf offers an angle at all
Plugs and tips
4 mm (0.16 in) banana plugs, stated. Five banana-plug-to-alligator-clip leads, five WIRE PIERCING PROBES that connect to the banana leads, and five nickel-plated copper alligator clips with a maximum jaw opening of 15 mm (0.59 in). The piercing probes work through a white plastic case: the wire goes in the case and the probe pierces it, which keeps the pierced spot located and the needle supported
Length
39.37 inches, 1 meter, for each of the FIVE leads. Five leads rather than two is unusual on this shelf and it is deliberate: diagnosing a sensor often means holding a reference, a signal and a ground at once, across two instruments
Supplied
31 pieces: 15 back probe pins, 5 banana-to-clip leads, 5 wire piercing probes, 5 alligator clips, and a storage box. 230 grams, $20.37. Stated for "Automotive Diagnostics, Testing, and Repairing, but also used in Physics Laboratories, Service Shops, Schools, Homes, and Industries"
Amazon reference
B0CKZD44HL
EAN
0677998303682
Three probe angles, which nothing else here offers
Fifteen back probes, so a connector stays plugged in
Thirty volts, the lowest rating on this shelf
Best for: Automotive sensor and injector diagnosis, where the connector stays plugged in and the signal is a few volts
A plain replacement pair for any meter with 4 mm (0.16 in) sockets, with insulated angled plugs and 18 mm (0.71 in) tips — and no published category rating, unlike the rated American sets on this shelf.
Amazon reference
B00I1GTVFU (identical on 5 markets)
EAN
4250569401732
Stated dimension or range
120 cm (47.2 in) · insulated 4 mm (0.16 in) angled banana plugs · 18 mm (0.71 in) tips
Fits almost any instrument with 4 mm (0.16 in) sockets
Insulated angled banana plugs, which are the safer form
No measurement category or voltage rating published
Best for: Replacing the leads that came with a meter, when the insulation has started to crack.
