A range of stand alone thermometers answering the needs of OEM’s, plant designers and process operators for a rugged, low cost temperature sensor which will integrate directly into a 4 to 20mA measuring, monitoring or control loop.

Key Features

• Range of standard through-the-lens sighting thermometers.
• Range of fibroptic thermometers with optional laser targeting system.
• Comprehensive range of thermometer mountings and accessories for complete environmental protection.
• DIN-rail mounted power supply unit – DPU (optional).
• LANDMARK Indicator LMi – digital panel meter (optional).

The UNO range of thermometers is designed to satisfy all OEM requirements and has a wide selection of infrared radiation thermometers available.

Each series of thermometers offers a choice of built-in time functions – peak picker or averager; and a range of temperature spans and operating wavebands to ensure optimum accuracy of measurement for the chosen industry and application.

The standard range of UNO thermometers feature precision through-the-lens sighting with focusable optics, which guarantees exact viewing and measurement of the smallest of target areas.

Adjustable emissivity/non-greyness compensation, peak picker and averager time functions are built-in as standard.

The thermometer provides a 4 to 20 mA linear output. Thermometer type, temperature range, spectral response and optical characteristics are chosen to suit the particular application.

Radiation Thermometers

The thermometers utilize proven reliable electronics combined with a high quality optical system to provide accurate, dependable temperature measurement.

They are housed in a rugged die cast body with a high quality electrical connector to provide reliable performance.

The single wavelength and ratio thermometers all feature through-the-lens sighting with a 6° field of view. Adjustable focus with a circular graticule gives precise alignment on to the smallest of targets.

Two optical variants are available: Standard and Short-focus. Close focus lenses are also available permitting measurement of targets as small as 0.45mm/0.017in. Ask for separate leaflet for full information.

Fibroptic Thermometers

Fibroptic thermometers utilize a flexible fibre optics light guide enabling the detector and electronics enclosure to be located in a less hostile environment.

The fibroptic thermometers are available with an optional built-in laser targeting system which defines the target spot for accurate sighting.

The use of fibre optics permits viewing of normally inaccessible targets, where there are high magnetic fields or in high ambient temperatures up to 200°C/400°F without cooling of the optic head. There is a choice of three optic heads and three light guide lengths.

Peak Picker

The peak picker function is used when measuring the temperature of intermittent targets or where the hot target surface is obscured by cool areas such as scale on rolled steel.  The peak picker decay rate is adjustable from 1.5 to 30% of span per second.

The peak picker function can be reset from a remote switch connected to the DPU.

Averger

The averager function is used to smooth unwanted variations or rapidly fluctuating changes in the thermometer signal to maintain a valid temperature reading.

The averager time constant can be adjusted from 5ms (U1 and U2 thermometers) to 5 seconds to give a smooth temperature display.

 

 

Temperatures
Low Temperature (C)	50	High Temperature (C)	2600
Low Temperature (F)	122	High Temperature (F)	4712

 

UNO Thermometers
Model	Temp. Range	Waveband	FOV	Min Target Dia* (Standard)	Min Target Dia** (with close-up lens)
U1 – General purpose, metals, glass, refractories
U1 600/1600C U1 1100/2900F	600 to 1600°C 1100 to 2900°F	1.0µm	100:1	3.5mm 0.13in	0.9mm 0.035in
U1 800/2600C U1 1500/4700F	800 to 2600°C 1500 to 4700°F	1.0µm	200:1	1.8mm 0.07in	0.45mm 0.017in
U2 – General purpose, metals and glass processing
U2 300/1100C U2 600/2000F	300 to 1100°C 600 to 2000°F	1.6µm	100:1	3.5mm 0.13in	0.9mm 0.035in
U4 – Bright, oxidised or lightly oxidised metal surfaces.
U4 50/250C U4 150/500F	50 to 250°C 150 to 500°F	2.4µm	30:1	11.7mm 0.46in	3.2mm 0.12in
U4 150/550C U4 300/1000F	150 to 550°C 300 to 1000°F	2.4µm	100:1	3.5mm 0.13in	1.0mm 0.04in
U5 – Glass surface temperature measurement
U5 400/1300C U5 750/2400F	400 to 1300°C 750 to 2400°F	4.8 to 5.2µm	100:1	3.5mm 0.13in	1.0mm 0.04in
U5 1000/2500C U5 1800/4500F	1000 to 2500 °C 1800 to 4500°F	4.8 to 5.2µm	100:1	3.5mm 0.13in	1.0mm 0.04in
V1 – Ratio thermometer, variable emissivity, obscuration of target, partially filled field of view.
V1 600/1600C V1 1100/2900F	600 to 1600°C 1100 to 2900°F	0.85 to 1.1µm	50:1	7.0mm 0.27in	1.8mm 0.07in
V1 1000/2600C V1 1800/4700F	1000 to 2600°C 1800 to 4700°F	0.85 to 1.1µm	200:1	1.8mm 0.07in	0.45mm 0.017in

* Standard variable and short focus versions available.
** Choice of close-up lenses available.

 

UNO Fibroptic Thermometers
Model	Temp. Range	Waveband	FOV	Head	Min. Target Dia.
U1 – General purpose, metals, glass, refractories
U1 600/1600CL U1 600/1600CYL U1 1100/2900FL U1 1100/2900FYL	600 to 1600°C 1100 to 2900°F	1.0µm	25:1	A10 A25 A50	4mm/0.15in 10mm/0.39in 23mm/0.90in
U1 800/2600CL U1 800/2600CYL U1 1500/4700FL U1 1500/4700FYL	800 to 2600°C 1500 to 4700°F	1.0µm	75:1	A10 A25 A50	1.3mm/0.05in 3.3mm/0.12in 6.7mm/0.26in
U2 – General purpose, metals and glass processing
U2 300/1100CL U2 300/1100CYL U2 600/2000FL U2 600/2000FYL	300 to 1100°C 600 to 2000°F	1.6µm	25:1	A10 A25 A50	4mm/0.15in 10mm/0.39in 23mm/0.90in
V1 – Ratio thermometer, variable emissivity, obscuration of target, partially filled field of view
V1 600/1600CL V1 600/1600CYL V1 1100/2900FL V1 1100/2900FYL	600 to 1600°C 1100 to 2900°F	0.85 to 1.1µm	25:1	A10 A25 A50	4mm/0.15in 10mm/0.39in 23mm/0.90in
V1 1000/2600CL V1 1000/2600CYL V1 1800/4700FL V1 1800/4700FYL	1000 to 2600°C 1800 to 4700°F	0.85 to 1.1µm	75:1	A10 A25 A50	1.3mm/0.05in 3.3mm/0.12in 6.7mm/0.26in