The UNI-T UTi730E is a 320×240 thermal imager built for everyday industrial and building diagnostics.

A 76,800-pixel detector resolves heat patterns across motors, panels, pipework, and building envelopes, while ≤65mK thermal sensitivity separates small temperature differences that signal early-stage faults. The 3.5″ IPS display shows live thermal, visual, fusion, or picture-in-picture views at 640×480.

Focus-free optics make the UTi730E a point-and-shoot instrument — there is no focus ring to adjust, so a technician can capture a usable radiometric image the moment the camera is aimed. An IP54 rating and 2-meter drop spec suit it to field use, and the detachable 5200 mAh battery is swapped in seconds for continuous shift work.

• 320×240 infrared resolution — 76,800 measurement pixels for clear thermal detail on panels, motors, and building surfaces
• ≤65mK thermal sensitivity (NETD) — resolves small temperature differences that flag early-stage faults
• Focus-free operation — point and shoot, no focus ring to adjust in the field
• 3.5″ IPS display (640×480) — bright, wide-angle viewing of live thermal and visual images
• Wi-Fi image transfer — send radiometric images to the free mobile app and PC analysis software
• Full on-screen analyzer — 5 points, 1 line, and 3 rectangle / 3 circle areas measured live
• Six isotherm modes — Auto, Ratio, Below, Above, Section, and Manual highlighting
• Four image modes — Thermal, Visual, Fusion, and Picture-in-Picture
• Detachable 5200 mAh battery — field-replaceable for continuous shift work, ≥4h per charge
• IP54 + 2m drop rating — dust- and splash-resistant, built for the job site

UNI-T UTi730E Details

320×240 IR at a Field-Industrial Price

The UTi730E's uncooled vanadium-oxide detector delivers 320×240 native resolution — 76,800 individual temperature measurements per frame. That is enough detail to separate a warm terminal from its neighbors in a distribution panel or to map the heat signature of a motor casing. The 8–14µm spectral band is the standard long-wave window for industrial and building thermography, where most surfaces radiate strongly.

Focus-Free Operation — Point and Shoot

There is no focus ring. The fixed-focus optical system keeps targets sharp across the working distance range a technician encounters on a walk-through, so the UTi730E captures a usable radiometric image the instant it is aimed. For survey work — checking a row of breakers, scanning a bank of motors, or sweeping a wall for moisture — that removes the single most common source of a blurred, unmeasurable thermal frame.

3.5″ IPS Display (640×480)

The 3.5-inch IPS panel shows 640×480 pixels with wide viewing angles, so the live image stays readable when the camera is held overhead or at arm's length. Live views switch between thermal-only, visible-light, blended fusion, and picture-in-picture, with an adjustable fusion ratio from 0–100% to align thermal detail against the visible scene.

Wi-Fi Image Transfer + PC Analysis Software

Built-in Wi-Fi sends captured radiometric images to the free UNI-T mobile app for quick field sharing, and the included PC software handles deeper analysis — isotherm review, multi-point measurement, and report generation. Because images are stored as radiometric JPEGs, emissivity and measurement points can be adjusted after the fact without re-shooting the target.

Full Analyzer Toolkit

On-screen measurement covers 5 spot points, 1 line, and up to 3 rectangle and 3 circle area tools simultaneously — six area methods in total. Each reports live minimum, maximum, and center temperatures, so a single frame can document a hotspot, its surroundings, and a reference area at once. Emissivity is adjustable from 0.01–1.00 (0.95 default) for accurate readings across painted metal, bare conductor, and building materials.

Six-Mode Isotherm

Isotherm highlighting paints every pixel inside a chosen temperature band in a contrasting color, making a fault pattern jump out of the scene. The UTi730E offers six isotherm modes — Auto, Ratio, Below, Above, Section, and Manual — so the same camera handles “show me everything above 60°C” and “show me only the 40–50°C band” with equal ease.

Time-Lapse Capture

A built-in time-lapse function takes photos automatically at a user-defined interval from 10 to 1000 seconds, with an on-screen countdown timer and photo counter. It is useful for documenting a heating or cooling cycle — watching a motor reach steady-state temperature, or a heat trace warm a pipe — without a technician standing over the camera.

Hi/Lo Alarm with LED Flashlight Reminder

The alarm system flags any measured temperature that crosses a preset high or low threshold, using both an on-screen icon and the dual LED flashlight as a visual reminder. On a noisy plant floor where an audible alert can be missed, the flashlight cue keeps the operator aware that a target has exceeded its limit.

Detachable Battery — Field-Replaceable

The 5200 mAh lithium-ion pack uses a snap-on design and charges through the built-in Type-C port, with a one-click capacity check on the pack itself. Continuous operating time is ≥4 hours per charge with Wi-Fi off; carrying a spare pack turns that into an all-day tool with no downtime waiting for a recharge.

Applications

Electrical Panel and Distribution Inspection

Loose connections, overloaded circuits, and unbalanced loads all show up as heat before they fail. Scanning a distribution panel or switchgear with the UTi730E locates the warm terminal or breaker without contact, so a repair can be scheduled before an outage.

Motor and Mechanical Equipment

Bearing wear, misalignment, and cooling problems raise the surface temperature of motors, pumps, and gearboxes. Routine thermal checks track those signatures over time, turning unplanned breakdowns into scheduled maintenance.

Building Envelope and Moisture

Missing insulation, air leakage, and water intrusion create temperature differences across walls and ceilings that the eye cannot see. The UTi730E maps them for energy audits and leak detection.

Solar Panel Strings

Hot cells, bypassed strings, and failed junctions in a PV array appear as thermal anomalies. A walk-through with the UTi730E identifies underperforming modules for targeted service.

Accessories and In the Box

In the Box

• UTi730E thermal imager
• Detachable 5200 mAh Li-ion battery pack (UT-M17)
• Type-C USB cable
• 16GB Micro SD card
• User manual

Recommended Accessories

• Spare UT-M17 Li-ion Battery Pack for all-day operation

Specifications

FAQ's

Does the UTi730E need to be focused?

No. The UTi730E uses a focus-free optical system — targets stay sharp across the normal working-distance range, so you can point and shoot without adjusting anything.

Can I adjust emissivity after capturing an image?

Yes. Images are saved as radiometric JPEGs, so emissivity and measurement points can be changed afterward in the PC analysis software without re-shooting the target.

How long does the battery last?

Continuous operating time is approximately 4 hours per charge with Wi-Fi off. The pack is detachable, so carrying a spare gives all-day runtime.

What temperature range does it measure?

-40°C to 400°C (-40°F to 752°F), with accuracy of ±2°C or ±2%, whichever is greater.

Downloads

Unitrend UTi730E Thermal Imager Datasheet