Archive for category: Thermometer

Fluke TiS20+ Thermal Imaging Camera

Temperature can be a sign of trouble ahead. With Fluke Thermal Imaging Camera you can detect issues before they become problems. Designed for everyday use, in the toughest industrial environments, Fluke offers infrared cameras for a wide range of applications.

What are Thermal Imaging Cameras?

Thermal imaging cameras are handheld electronic devices with an integrated visual display, designed for detecting heat energy.

The key component of a thermal camera is a heat sensor attached to a special type of lens, which is then adapted to work alongside standard image-capture technologies. This allows engineers to quickly identify regions of excessive temperature or sources of wasted heat energy, such as overheating components or potential thermal insulation gaps in building inspection.

Visible light forms only a small part of the electromagnetic spectrum, and the only part we can actually see. When pointed at an object or area, the sensor on a thermal detection camera allows the user to view the otherwise invisible infrared spectrum, which exists at wavelengths between visible light and microwaves.

This is often rendered as a color map in modern IR cameras, although black-and-white displays are still preferred for certain applications due to their reduced visual ‘busyness’ and improved capture of fine detail.

On a color thermographic display, warmer components or regions will show up as reds, oranges, and yellows, while cooler parts will typically be shown as purples and blues (green usually indicates areas that are roughly at room temperature). Because they measure infrared radiation, and not visible light, thermal cameras are also useful for identifying heat sources in very dark or otherwise obscured environments.

How thermal imaging cameras work?

An infrared, IR or thermal imaging camera works by detecting and measuring the infrared radiation emanating from objects – in other words, their heat signature.

In order to do so, the camera must first be fitted with a lens that allows IR frequencies to pass through, focusing them on to a special sensor array which can, in turn, detect and read them.

The sensor array is constructed as a grid of pixels, each of which reacts to the infrared wavelengths hitting it by converting them into an electronic signal. Those signals are then sent to a processor within the main body of the camera, which converts them using algorithms into a color map of different temperature values. It’s this map which is sent on to be rendered by the display screen.

Many types of thermal imaging cameras will also include a standard shooting mode that works with the visible light spectrum, much like any other point-and-click digital camera. This allows for easy comparison of two identical shots – one in IR and one in normal mode – to help quickly identify specific problem areas once the user steps out from behind the lens.

Specifications

Infrared resolution

• 120 x 90 (10,800 pixels)

IFOV (spatial resolution)

• 7.6 mRad, D:S 130:1

Field of view

• 50° H x 38° V

Minimum focus distance

• 50cm (20 inches)

Level and span

• Smooth auto and manual scaling

Display

• 3.5″ LCD touchscreen (landscape)

Display resolution

• 320 x 240 LCD

Thermal sensitivity (NETD)

• 60 mK

Frame rate

• 9 Hz

Batteries (field-replaceable, rechargeable)

• Lithium-ion smart battery pack with five-segment LED display to show charge level

Battery life

• ≥ 5 hours continuous (without WiFi)

Battery charging time

• 2.5 hours to full charge

Temperature measurement range (not calibrated below 0 °C)

• -20 °C to 150 °C (-4°F to 302°F)

Accuracy

• Target temp at or over 0 °C: Accuracy: ± 2 °C or ± 2 % at 25 °C, whichever is the greater.

Weight

• 0.72 kg (1.6 lb)

Size (H x W x L)

• 26.7 cm x 10.1 cm x 14.5 cm (10.5 in x 4.0 in x 5.7 in)

Enclosure rating

• IP54 (protected against dust, limited ingress; protection against water spray from all directions)

Data Sheet

References

• www.fluke.com/en-gb/product/thermal-imaging-cameras
• https://uk.rs-online.com/web/generalDisplay.html?id=ideas-and-advice/thermal-imaging-cameras-guide

Fluke 51 II Handheld Digital Probe Thermometer

In a short time, hand-held infrared (IR) thermometers have gone from exotic to commonplace. Portable and convenient, they are useful for troubleshooting and checking both product quality and process quality. Fluke’s family of IR thermometers offers users speed and convenience.

Applications for infrared thermometers

Infrared thermometry can be used for process monitoring, plant predictive and preventive maintenance, electrical applications, quality assurance, and other applications.

Infrared (IR) non-contact thermometers are ideal for moving targets and machinery, hazardous and inaccessible or distant targets, electrical components, “big picture” evaluations of machinery or surfaces, trending records, and even protection against litigation and insurance claims. In fact, insurance companies are encouraging their customers to implement preventive infrared scanning.

IR thermometers and imagers can save time and money for contractor and customer alike, as well as perform diagnostics that were previously impossible without shutting down systems.

1. Electrical Maintenance
2. Equipment Maintenance
3. Building Controls
4. HVAC/R
5. Process/Product
6. etc

The Fluke Model 51  Thermometer (“the thermometer”) are microprocessor-based, digital thermometers designed to use external J-, K-, T-, and E type thermocouples (temperature probes) as temperature sensors. Use the thermometer only as specified in this manual. Otherwise, the protection provided by the meter may be impaired.

The Fluke 51 II single input digital thermometer delivers fast response with laboratory accuracy (0.05% + 0.3°C). You can use the 51 II to measure contact temperature on motors, insulation, breakers, pipes, corroded connections, liquids, and wires with industrial standard J, K, T, or E-type thermocouple temperature sensors. The user friendly-front panel and large, backlit display make it easy to view results. And the sleep mode feature preserves battery life to give you a typical thousand hours of operation.

Other useful features:

• Easy-to-access battery door that allows replacing the battery without breaking the calibration seal
• Comes with splash- and dust-resistant case protected by an impact-absorbing holster and a three-year warranty
• Powered by three, standard AA batteries -30-
• Includes an electronic offset function that compensates for thermocouple errors to maximize overall accuracy
• Handles temperatures up to 900°C (1600°F)
• Provides a user-friendly front panel that is easy to set up and operate
• Offers sleep mode to increase battery life; 1000-hour battery life typical
• Offers optional ToolPak accessory to hang the thermometer from any metal object (with the rare earth magnet) or secure around a pipe (with hook-and-loop straps) for hands-free operation

Temperature accuracy

Above -100°C

• J, K, T, E, and N-type: ±[0.05% + 0.3°C]
• R and S-type: ±[0.05% + 0.4°C]

Below -100°C

• J, K, E, and N-types: ±[0.20% + 0.3°C]
• T-type: ±[0.50% + 0.3°C]

Temperature

J-type

• -210°C to 1200°C

K-type

• -200°C to 1372°C

T-type

• -250°C to 400°C

E-type

• -150°C to 1000°C

N-type

• -200°C to 1300°C

R and S-type

• 0°C to 1767°C

Temperature scale

• ITS-90

Remote Mount Industrial Thermocouple Model TC15

Thermocouples generate a voltage directly dependent on temperature. They are particularly suited for high temperatures up to 1,700 °C (3,092 °F).

Instrument designs from mineral-insulated sheathed cable are very resistant against extremely high vibration loads (depending on instrument model, the sensor element and wetted materials). For WIKA thermocouples, the accuracy classes standard and special limits (ASTM E230) or classes 1 and 2 (IEC 60581) are available.

TC15 series thermocouples are remote mounted industrial assemblies supplied with or without a temperature transmitter.

They are designed for applications where direct mounting is inaccessible, where there is excessive radiated or conducted heat, or applications where high vibrations exist.

An extensive range of elements, connection heads, insertion lengths, and process connections can be individually selected for the appropriate application.

Replacement sensors can also be configured for this model. Thermocouples in this series can be inserted directly into a process, or combined with a variety of thermowell designs.

Special Features

• The sensor can be mounted into a thermowell or directly into a process with the use of a spring-loaded or compression process fitting.
• The assembly can be supplied with or without a transmitter. Transmitters convert the millivolt input from the thermocouple to a linear analog or digital output (commonly 4-20 mA). This signal reduces potential inaccuracies in the circuit and negates the requirement for thermocouple extension wire.
• The assembly has electrical approvals for explosion proof hazardous locations, ingress protection, and general purpose areas.
• The thermocouple sensors available for this assembly are provided with a variety of sheath materials including austenitic 300 series and ferritic 400 series stainless steel, corrosion resistant and high-temperature oxidation resistant alloys.
• Thermocouple diameters range from 0.063 inches to 0.250 inches and 1.5 mm. to 6 mm. Standard diameters are 0.125 inch & 0.250 inch and 6 mm.
• For applications that are exposed to outside weather conditions or where moisture is present, the flexible armor extension can be provided with a moisture-proof jacket of PTFE or PVC.

Applications

TC15 series assemblies are suitable for most industrial and commercial applications including:

• Chemical and petrochemical industries
• Energy and power plant technology
• Furnaces, kilns, ovens, and boilers
• Incinerators
• Machinery, plant and tank measurement
• Oil and gas industries
• Offshore exploration and drilling
• Pipeline control
• Power and utilities
• Pulp and paper
• Water and wastewater treatment

Technical Feature

Sensor Element:

• K (NiCr-Ni)
• J (Fe-CuNi),
• E (NiCr-CuNi)
• N (NiCrSi-NiSi)
• T (Cu-CuNi)

Temperature range:

• -200 °C to +1260 °C (depending upon element)

The number of sensors:

• 2-wire single circuit
• 4-wire dual circuit

Classification tolerance:

• Class 2 and class 1 per DIN EN 60584
• ISA standard and special to ANSI MC96.1-1982

Measuring point:

• Ungrounded or grounded

Electrical approvals:

• CSA, FM