Brand: Raytek

Raytek Thermalert 4.0 Fixed Infrared Pyrometer Series

Name: Raytek Thermalert 4.0 Fixed IR Pyrometer – Datasheet & Quote
Brand: Raytek
SKU: Thermalert 4.0

Description

A compact stainless steel pyrometer family for continuous non-contact temperature

The Raytek Thermalert 4.0 is a fixed-mount infrared pyrometer series in a compact stainless steel housing for continuous process temperature measurement. One mechanical design is offered in many spectral versions, so the same installation approach serves metals, glass, plastics and combustion processes between -40 and 2300 degC.

It is aimed at buyers who need a sensor that survives hot plant environments. Ambient temperature rating reaches 85 degC with no cooling, 120 degC with air cooling, 175 degC with water cooling and 315 degC with a ThermoJacket enclosure, and the housing is IP65 / NEMA 4.

Technical specifications

Parameter	Specification
Series	Thermalert 4.0, fixed-mount infrared pyrometer; 2-wire, 4-wire, 6-wire and 12-wire back panels
Overall temperature range	-40 to 2300 degC (-40 to 4172 degF), depending on model
LT (8 to 14 um)	-20 to 500 degC (LTD-04); -20 to 600 degC (LT-07, LT-15, LT-30, LTB-30); -40 to 1000 degC (LT-50, LT-70)
Metal models	G5: 250 to 1650 degC (G5-30) and 450 to 2250 degC (G5-70), 5 um; G7-70: 300 to 900 degC, 7.9 um; MT: 200 to 1000 degC (MT-30), 450 to 2250 degC (MT-70), 3.9 um; HT-60: 500 to 2000 degC
Short-wave models	3M-70: 100 to 600 degC; 2M-150: 250 to 1400 degC; 1ML-150: 500 to 1650 degC; 1MH-150: 650 to 2300 degC
Plastics and flame models	P7-30: 10 to 360 degC; P3-20: 25 to 450 degC; C02-30, C0-30 and NOX-30: flame detection, 120 to 1650 degC
Optical resolution (D:S)	4:1 to 150:1 depending on model, for example LT-30 33:1, LT-70 70:1, 2M-150 150:1
Response time	As fast as 10 ms (2M-150, 1ML-150, 1MH-150); 20 ms (3M-70); 30 to 150 ms for LT; 130 ms for several others
System accuracy	+/-1 % of reading or +/-1.0 degC (LT, G5-30, G7, P7, MT); other models as listed in the datasheet
Outputs and interfaces	2-wire 4 to 20 mA; 6-wire 0/4 to 20 mA, 0 to 10 V or J/K thermocouple with RS485; 12-wire adds alarm output and trigger input; 4-wire Ethernet, EtherNet/IP, PROFINET IO with Power over Ethernet
Power supply	2-wire 12 to 28.8 VDC; 6/12-wire 24 VDC nominal (20 to 48 VDC), 100 mA at 24 V; 4-wire Power over Ethernet
Ambient temperature	-20 to 85 degC without cooling; 120 degC with air cooling; 175 degC with water cooling; 315 degC with ThermoJacket
Enclosure / weight	IP65 / NEMA 4; 500 g (17.6 oz)
Intrinsic safety option	ATEX II 2G Ex ib IIC T4 Gb and II 2D Ex ib IIIC T135 degC Db, IECEx equivalent, -20 to +80 degC; not available on sensors with plastic lens
Other features	Laser sighting on most models; real-time background temperature compensation; USB for setup; remote configuration software

Picking the spectral model

Spectral response determines whether the sensor reads the target correctly. The model families span general surfaces (LT, 8 to 14 um), glass-range wavelengths (G5, G7), plastic-range wavelengths (P7, P3), metals (MT, HT, 3M, 2M, 1M) and flame detection (C02, C0, NOX). The short-wave 1M and 2M models offer response down to 10 ms. Select by target material and temperature, not by temperature alone.

The interface also matters. The 2-wire version needs only a current loop, and a HART option is mentioned on the product page. The 6-wire and 12-wire versions add RS485, thermocouple or voltage outputs, with alarm, trigger and analog input for emissivity and background compensation. The 4-wire version connects to industrial Ethernet and is powered by PoE.

Installation and what to confirm before ordering

Confirm the full model name (for example LT-30, G5-70 or 2M-150), back panel type, sighting option, required optics (the datasheet lists focus distances and smallest spot sizes per model), the ambient temperature at the mounting point and whether an intrinsically safe version is required. Cooling, mounting brackets and the ThermoJacket are separate accessories. See also the Raytek Compact CI pyrometer for a smaller fixed unit, or browse temperature instrumentation products.

Documents and quotation

The attached Fluke Process Instruments datasheet for Thermalert 4.0 (4 pages) lists every model code, temperature range, optic, interface and the intrinsic safety certification text. The operator manual link on the manufacturer page is not currently available.

Seven Star LLC is an independent supplier in Muscat. Send the exact model code, back panel, quantity and delivery location for a quotation.

Datasheets & Documents

Datasheet Raytek Thermalert 4.0 datasheet (EN) Download

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About brand

Raytek is the name on a long line of non-contact infrared temperature sensors, today presented by the manufacturer under Fluke Process Instruments. Seven Star LLC lists the Raytek Compact CI infrared spot pyrometer and supplies Raytek fixed-mount pyrometers to manufacturing and process plants in Oman. The Compact CI is a small sensor meant to be built into machines and production lines.

Raytek pyrometer families

The manufacturer's current range keeps the Raytek name on the Compact CI and CM sensors, the Compact MI3 with its multi-sensor design, the Marathon MM with high-resolution optics, and the handheld Raynger 3i Plus. The Compact CI and CM are described as rugged, easy to install units for OEM and end-user applications. The Thermalert 4.0 and Endurance series cover wider spectral and temperature needs.

Ordering Raytek sensors: what we need

Send the full model code from the sensor label, since it fixes the temperature range, the output type and the cable length. For a new measuring point, give the target material and surface, the temperature span, the distance and target size, and the ambient temperature at the sensor. Mention accessories such as air purge collars or mounting brackets. GCC inquiries are welcome.

Browse Raytek products by category: Temperature Instrumentation.