Video: IR DLD-T

Video transcript

A thermal camera that stays in place and measures all the time. What it watches, how it measures and alarms, and how it is powered and connected to the control system. A periodic thermographic survey sees a connection once or twice a year. A fault that develops in between goes unnoticed until the next round, or until it fails. Some points are worth watching all the time, in an unattended substation, on a conveyor, in a waste pit.

That is the job of a fixed camera. In figures, an uncooled detector of 640 × 480 or 384 × 288, up to 10 points, 10 areas and 3 lines measured in real time, an accuracy of 2 degrees or 2% of the reading, and an IP66 housing. are 6 versions. 384 × 288 with a 9 or 37 mm lens, 640 × 480 amorphous silicon, also with 9 or 37, and 640 × 480 vanadium oxide, with 13 or 25 mm. The field of view runs from 69 degrees down to 10. The lens is fixed and athermalized.

Its focus does not drift as the housing heats in summer or cools in winter, so the calibration holds without anyone touching it. It is waterproof and coated with hard carbon film. Choose it for the view. A wide lens for a whole bay, a narrow one for a small target further away. The measurement runs continuously. The vanadium oxide versions take 10 movable points, 10 areas, and 3 lines, with maximum, minimum, and average, and irregular outlines to follow a component.

The others take 6 points, 6 areas, and 3 lines. Two ranges cover from minus 20 to 180 degrees, and from 100 to 600. A good reading needs the right settings. The emissivity, from 0.01 to 1, tells the camera how much the surface radiates. Distance correction compensates for the air in between, and linear correction trims the reading. The detector corrects itself at start-up and at intervals, and a manual correction is available.

Alarms come from the temperature rules. High temperature on every version, high and low on the vanadium oxide ones. A hardware input lets an external contact raise an alarm too. The camera answers through its hardware output, which can switch a local signal, and it reports the event upstream. the control system, it is a sensor. Temperatures go out by Modbus RTU on the RS-485 port or TCP on the network, and an SDK is available.

To the video system, it is an IP camera, ONVIF Profile S and G, RTSP, and GB28181. Installation is simple. With PoE, a single Ethernet cable carries power and data, otherwise, a 12-volt DC supply. Consumption is at most 6 watts, or 4, depending on the version. Besides the gigabit RJ45, there is an RS-485 port, one digital input and one digital output. the network, it speaks the usual protocols. TCP/IP,

RTSP, NTP for the clock, HTTP and HTTPS, DHCP and FTP. Access is protected by HTTPS login, user categories, IP address filtering, an access log, and 802.1x. Change the default password before it goes live. The image can be adjusted for the operator, brightness, gain, digital detail enhancement, and filtering, a continuous electronic zoom from 1 to 16 times, 10 or 11 palettes, flip and mirror, and the time, date, and channel name on screen.

There is a slot for a TF card, an optional 12 GB built-in storage. is built for permanent outdoor service, sealed to IP66, with lightning and surge protection, from minus 20 to 50 degrees in operation, 258 millimeters long, and under a kilogram. Typical places, substation equipment and switchgear, watched continuously, conveyors, warehouses, and waste pits, where a rising temperature is the first sign of a fire, and processed temperatures in plants that run unattended. Thermal monitoring, from Amperis.