AMETEK Land UNO Standalone Infrared Thermometer

AMETEK Land UNO standalone infrared thermometer

UNO is a standalone non-contact infrared thermometer from AMETEK Land, built for OEM machines, plant designers and process operators who want a temperature signal without a separate processor. Power it up and it gives a 4 to 20 mA output that is linear over its temperature range. It is offered as a through-the-lens sighting thermometer or as a fibre-optic version with optional laser targeting. Seven Star LLC supplies the UNO range in Oman and the GCC as an independent supplier in Muscat.

The model code carries the detector family and the span. In “U1 600/1600C” the letter-digit pair is the waveband type (U1 for 1 µm, U2+ for 1.6 µm, U4 for 2.4 µm, U6+ for 3 to 5 µm, V1 for the 0.85 to 1.1 µm ratio type), the numbers are the lower and upper limit, and C or F gives the unit. A trailing V or S refers to focus version, and “YL” or “CYL” marks a fibre-optic version in which Y indicates laser targeting.

UNO technical specifications and models

Each of these also exists with a Fahrenheit span (for example U1 1100/2900F). Fibre-optic examples are U1 600/1600CYL (25:1 with A10, A25 or A50 head), U1 800/2600CYL (75:1), U2 300/1100CYL and V1 ratio fibre models.

How UNO measures and conditions the signal

UNO detects the infrared radiation from the target and converts it to a 4 to 20 mA signal within the thermometer itself. Two built-in time functions are available. The peak picker reports the highest temperature seen, which is the correct reading for intermittent targets or a hot object partly hidden by cooler areas. The averager smooths spurious fluctuation. Because there is no contact, nothing touches or contaminates the product, which is the manufacturer’s reason for recommending it for fast-moving, small, fragile or controlled-atmosphere products.

Where UNO fits compared with other Land thermometers

UNO uses the same optical families as System 4 but is a standalone loop device, so no Landmark processor is needed. When several thermometers need to be shown together, or alarms and maths functions are wanted, a System 4 thermometer with a Landmark LMG MkII or Technic processor is the better route. When digital configuration, Ethernet or RS485 is wanted, SOLOnet is the digital alternative. Mountings and protection accessories are offered for mechanical and thermal protection of the UNO body.

Selecting a UNO model

• Surface and temperature: pick the waveband first (1 µm for hot metal, 2.4 µm for lightly oxidised metal, 3 to 5 µm for low temperatures), then the span.
• Target size: compare the minimum target diameter at the working distance; a 200:1 optic is for small targets.
• Ratio V1 type: where emissivity changes or part of the view is obscured.
• Focus: V for 500 mm and beyond, S for 350 mm to 1 m, or fibre head A10, A25 or A50.
• Fibre optic or standard: use fibre where the electronics must be away from heat or magnetic fields.
• Time function: peak picker or averager setting for the process.

Installation, commissioning and maintenance

Mount the thermometer in a protective jacket or bracket and aim it with the through-the-lens sight or the laser, then set focus for the target distance. Connect a 24 V loop supply and a 4 to 20 mA input; check polarity and loop resistance before power-up. Compare the reading with a reference once and write down emissivity and time-function settings. Keep the lens clean and use air purge in dusty areas. Quick-start guides are published by the manufacturer for U2+ and U6+ versions and for fibre-optic versions.

Typical applications in Oman and the GCC

For OEM equipment exported to the region and for plant in Oman, UNO is a practical fit on glass lines, hydrocarbon-processing heaters and process equipment, minerals processing and heat-treatment lines where a simple 4 to 20 mA reading is enough. The heat and dust of the Gulf make purge air, a rugged sealed body and a correctly specified ambient limit important in the specification.

Information to send with an RFQ for UNO

• Full model code (U1, U2+, U4, U6+ or V1, with span and focus version).
• Target material, size and working distance.
• Required fibre head and laser targeting, if any.
• Ambient temperature at the mounting point.
• Preferred time function and loop supply.
• Mounting jacket, bracket or purge accessories.

Documents and quotation

The manufacturer brochure for UNO is attached on this page and lists the standard and fibre-optic model ranges.

Send the model code and application details to Seven Star LLC and we will confirm availability for Oman and the GCC.