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    At a Glance

    The Raytek® Raynger 3i Plus high-temperature handheld infrared thermometer is designed to meet process performance requirements in many industrial applications, including highly demanding hot environments in primary and secondary metal processing, as well as petrochemical and power plant operations.

    The strong and rugged design of this new generation of portable pyrometers withstands a 1m (3.2ft) drop test and provides a longer operational cycle for up to 24 hours when powered with rechargeable batteries.

    Raynger 3i Plus laser temperature gun features an intuitive user interface for easy parameter setup and enables ‘on-site’ display of data analysis and trending, as well as fast and easy data transfer to PC or smartphone using USB or Bluetooth®.

    To meet the highly demanding requirements of hot industrial environments, the Raytek 3i Plus IR thermometer features a high optical resolution of 250:1, which ensures accurate temperature readings at longer distances. Heat-resistant “Red Nose” warning detector ensures operator safety and efficiency. Dual laser and scope sighting, visible even against "red hot" backgrounds, make this IR thermometer a perfect choice for hot temperature applications.

    Key Features:

    • Read temperature ranges from 400 to 3000ºC (752 to 5432ºF)
    • Ambient operating temperatures: 0 to 50ºC (32 to 120ºF)
    • Dual laser and scope sighting options for fast and simple target-aiming
    • High optical resolution: 250:1 to ensure accurate temperature readings at longer distances
    • Red Dot sighting technology for accurate targeting against “red hot” backgrounds
    • "Red Nose" heat-resistant warning-detector and alarm
    • Data storage: up to 4,900 units with location, date, and time stamp
    • Bluetooth® wireless technology for communication with a mobile device
    • Documenting personal computer (PC) software

    Raytek DataTemp® Raynger 3i Plus Software & Mobile App

    The new 3i Plus DataTemp Windows PC software supports real-time communication, data storage, graphing, and analysis. This innovative portable IR thermometer includes a mobile app for quick data transfer and collaboration, as well as fast and simple on-site capture and emailing of the temperature reports. It also allows instant views of the temperature trend in real-time.

    Download Raynger 3i Plus Mobile App from iTunes ►

Model Number3i-1M3i-2M
Temperature Range700 to 3000 ºC
(1292 to 5432 ºF)
400 to 2000 ºC
(752 to 3632 ºF)
Spectral Response1.0 μm1.6 μm
System Accuracy±0.5 % of reading +1 ºC (2ºF) for <2700 ºC (4892 ºF)
± 2% of reading for >2700°C (4892°F)
Repeatability±0.3 % of reading ±1 ºC (2ºF)
Response Time40 mSec
Optical Resolution (D:S)250:1
Emissivity0.10 - 1.00
Operating Temperature0 to 50 ºC (32 to 120 ºF)
Storage Temperature-20 to 60 ºC (-4 to 140 ºF) without batteries
Relative Humidity10 to 90 %, RH noncondensing @ 30 ºC (86 ºF)
Dimensions /WeightLaser Models: 218 x 172 x 74 mm/700 g
(8.5 x 6.7 x 2.9 in /1.5 lb)
Scope Models: 218 x 222 x 74 mm/950 g
(8.5 x 8.7 x 2.9 in /2.0 lb)
PowerSingle cell Lithium-ion, 3.6 V, 2500 mAh or via USB 2.0
Battery Life (Lithion-Ion)24 hours
LaserLaser beam for targeting (On/Off) (EN60825 Class 2, FDA Class II)
Temperature DisplayºC or ºF (selectable)
Signal ProcessingMAX, MIN, DIF, AVG Temperatures
Audible AlarmsTarget temperature/Ambient temperature/Low battery
Data LoggingUp to 4,900 data points
Digital OutputsUSB 2.0, optional Bluetooth® 4.0** (USA/Canada: Bluetooth and USB standard)
Additional featuresBacklit LCD, Locking Trigger, Tripod Mounting, Reflected Energy Compensation

Standards and Compliance

WEEE Directive (2002/96/EC)With reference to the equipment types in the WEEE Directive Annex I, this product is classed as Category 9 "Monitoring and Control Instrumentation." Do not dispose of this product as unsorted municipal waste.
RoHSRestriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment
CEConforms to European Union directive.
CMCConforms to China Metrology Certification CMC mark with Implement standard Q/SXAV 16
CSAConforms to Canadian Standards Association Certification.
FCCClass A digital device: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
BCConforms to the Appliance Efficiency Regulation (California Code of Regulations, Title 20, Sections 1601 through 1608) for small battery charging systems
KCCElectromagnetic Compatibility applies to use in Korea. This product meets the requirements for industrial (Class A) electromagnetic wave equipment.

Raytek® Raynger 3i Plus are portable IR thermometers designed for high-temperature applications. They cover a temperature range of 400 - 3000 ºC (752 - 5432 ºF) (depending on the model). Superior Distance-to-Spot (D:S) ratio allows users to measure high-temperature targets from longer distances, ensuring accurate temperature readings and operator safety.

Click here if you would like to speak with an expert to discuss your application

  • Metals Processing: foundry, steel, and metal refining
  • Semiconductor production
  • Ceramics
  • Chemical and petrochemical furnaces

Manuals: (1)

Raynger 3i Plus Manual

Each Raytek Raynger 3i Plus model comes with the list of accessories listed below:

  • Carrying case
  • CD with software for real-time graphic temperature display and data download, and operator's manual (PDF format)
  • Lithium-ion battery, 2.5 Ah
  • Mini USB port adapter (100 – 240 VAC 50/60 Hz)
  • Mini USB-to-DC jack converter for charging battery separately
  • Computer cable with USB-to-Mini USB, 1.5 m (4.9 ft)