Help with Thermocouple Temperature Probes specifications:
Element Specifications
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| Configuration | |||
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| Grounded Thermocouple | Grounded thermocouples have a tip with wires that are physically attached to the inside of the probe wall. This results in good heat transfer from the outside, through the probe wall to the thermocouple junction. | ||
| Ungrounded Thermocouple | With ungrounded thermocouples, the junction is detached from the probe wall. Consequently, the response time is slower than with grounded thermocouples. An advantage of ungrounded thermocouples, however, is that they offer electrical isolation of 1.5 M1/2 at 500 VDC in all diameters. | ||
| Exposed Thermocouple | Exposed thermocouples have an exposed junction that protrudes from the tip of the sheath and extends into the surrounding environment. These thermocouples provide the best response time, but are limited to only non-corrosive and non-pressurized applications. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Base, Noble and Refractory Metal Type | |||
| Your choices are... | |||
| E | Type E thermocouples contain chromel / constantan and have a typical temperature range of -270° to 1000° C. | ||
| J | Type J thermocouples contain iron/ constantan and have a typical temperature range of -210° to 1200° C. | ||
| K | Type K thermocouples contain chromel / alumel and have a typical temperature range of -270° to 1372° C. | ||
| N | Type N thermocouples contain nicrosil / nisil and have a typical temperature range of -270° to 1300° C. | ||
| T | Type T thermocouples contain copper / constantan and have a typical temperature range of -270° to 400° C. | ||
| B | Type B thermocouples contain platinum (30%) / rhodium and have a typical temperature range of 0° to 1820° C. | ||
| S | Type S thermocouples contain platinum (10%) / rhodium and have a typical temperature range of -50° to 1768° C. | ||
| R | Type R thermocouples contain platinum (13%) / rhodium and have a typical temperature range of -50° to 1768° C. | ||
| W | Type W thermocouples contain tungsten / rhenium and have a typical temperature range of 0° to 2300° C. | ||
| C | Type C thermocouples contain tungsten (5%) rhenium / tungsten (26%) rhenium and have a typical temperature range of 0° to 2320° C. | ||
| Other | Other unlisted thermocouple types. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Element Configuration | The number of elements contained in the probe, typically the more elements in the probe the more accurate and expensive the probe is. | ||
| Your choices are... | |||
| Single Element | |||
| Double Element | |||
| > 2 Elements | |||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Sensed Temperature Range
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| Sensed Temperature | Sensed temperature is the temperature range for which the device is rated for sensing. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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Probe Configuration
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| Probe Configuration | There are many different probe configurations. Suppliers often designate probes by application or intended use. Custom probes are also available. | ||
| Your choices are... | |||
| Straight Probe | Straight probes measure stationary surface temperatures and can be used in wells. | ||
| Penetration (Needle) Probe | Penetration probes or needle probes are used to measure internal temperatures. | ||
| Flexible Probe | Flexible probes can be manipulated for various temperature measurements. | ||
| Drop Probe | Drop probes are designed for well or underwater temperature measurements. | ||
| Curved Probe | Curved probes are used to measure temperatures on pipes or other curved surfaces. | ||
| Roller or Moving Probe | Roller probes or moving probes measure temperatures on moving surfaces. | ||
| Air Probe | Air probes are designed for air-flow temperature measurements. | ||
| Angled Probe | Angled probes are used for temperature measurement applications inside pipes and angled spaces. | ||
| Surface | Surface probes attach to skin or a flat surface. They are also known as banjo, patch, or bolt-on probes. | ||
| Clamp or Strap Sensor | Clamp probes or strap sensor probes clamp or wrap around the surface to be monitored. | ||
| Flat/Ribbon | Flat probes or ribbon probes are temperature sensors with a flexible membrane. | ||
| Other | Other unlisted or specialized probe configurations. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Additional Probe Specifications
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| Diameter or Width Range | Depending on the probe configuration, this dimension is either the diameter or width of the probe, or the diameter of the object being monitored. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Sensitive Length | Depending on the probe configuration, this dimension is either the height or length of the temperature-sensitive part of the probe. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Process Connection | There are many ways to connect a probe to a monitored process. This section describes standard connection methods, but is not an exhaustive list. | ||
| Your choices are... | |||
| None or Hand held | Probes do not include a process connection. Typically, these devices are hand held probes. | ||
| Bayonet | Bayonet fittings consist of a socket with J-shaped slots on opposite sides. A bayonet base or coupling is inserted against a spring and rotated until its pins are firmly seated. | ||
| Threaded Fitting | Threaded fittings are continuous helical ribs, like on a pipe. Styles include national pipe thread (NPT), imperial or English, and metric. | ||
| Compression | Compression fittings have a tapered sleeve and are used mainly with tube fittings. | ||
| Braze, Weld or Solder | Braze, weld, or solder fittings are designed to be brazed, welded, or soldered into place. | ||
| Other | Other unlisted or specialized process connections. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Sensor Termination Type | There are various methods for probe terminations. Sensor termination type is an important parameter when trying to match a probe with an instrument, transmitter or other signal conditioning equipment. | ||
| Your choices are... | |||
| Bare or Insulated Lead Wires | Devices use bare or insulated lead wires. | ||
| Metal Braided Leads | Devices use metal braided leads. | ||
| Armor Leads | Devices use armor leads. | ||
| Flexible Conduit Leads | Devices use flexible conduit leads. | ||
| Terminal Block | Devices use terminal blocks. | ||
| Conduit Connector | Devices use conduit connectors. | ||
| Screw Tabs or Lugs | Devices use screw tabs or lugs. | ||
| Integral Connection Head (Thermohead) | Devices use integral connection heads (thermoheads). | ||
| Plug or Quick Connect | Devices use plugs or quick-connects. | ||
| Other | Other unlisted or specialized sensor termination type. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Features and Options
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| Probe Features | |||
| Your choices are... | |||
| Available as an Assembly | Devices are complete or partial assemblies with a thermowell, fittings, and transmitter or thermohead. | ||
| Cuttable | Probes can be cut to specific lengths. | ||
| Spring Loaded | Spring loading ensures proper contact with the tip of the thermowell or the surface to monitor. | ||
| Tip Sensitive | With tip-sensitive probes, only the tip of the probe is temperature-sensitive. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Explosion Proof? | Probes are rated as explosion-proof and can be used in hazardous environments. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Splash Proof or Watertight? | Probes are rated for washdown, splash, or direct immersion applications. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| HVAC Applications? | Probes are designed specifically for heating, ventilation and air conditioning (HVAC) applications such as duct or flume monitoring. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Sanitary Applications? | Probes are designed specifically for sanitary applications such as food or pharmaceutical processing. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Transmitter Output (e.g. 4-20 mA) ? | Probes are configured with an analog current output, typically 4 - 20 mA. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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