Cleanroom Testing and Validation Instruments

Surface Temperature Meter

A handheld contact temperature meter with a single Type K thermocouple input and spring-band surface probe for direct checks on panels, pipes and equipment housings.

Direct Type K contact measurement.
Conforming spring-band surface probe.
Hold, minimum, maximum and average recall.

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Product Introduction

This contact surface temperature meter reads the thermoelectric voltage from a Type K probe and applies cold-junction compensation inside the handheld instrument. Its separate surface probe uses a thin resilient thermocouple strip that conforms to a flat or gently curved workpiece with light, repeatable pressure. A backlit LCD and direct-access hold, minimum, maximum and average functions support comparison of equipment surfaces without the emissivity uncertainty associated with non-contact infrared readings. The keyed miniature connector allows the meter to accept alternative compatible probes when air, immersion or narrow-access measurements are required.

Key Features

Direct thermocouple contact measures the local surface without an infrared emissivity setting.

Spring-band sensing tip conforms to flat, slightly convex and mildly uneven surfaces under light pressure.

Single keyed Type K miniature input keeps polarity and probe replacement straightforward.

Backlit LCD with hold, minimum, maximum and average functions supports repeatable survey records.

Separate probe handle and flexible strain-relieved cable keep the operator's hand away from the test surface.

Protective TPE boot, rear kickstand and replaceable battery suit bench and field measurements.

Customer Product Concerns

Reliable contact readings depend on full sensor contact, consistent pressure, probe angle, response time and local heat flow, so the probe geometry and handling method should match the surface being checked.

Tilting the probe or applying inconsistent force can leave the sensing strip partly off the surface and slow or bias the reading.Use the spring-band head square to the surface with light repeatable pressure, and hold it steady until the display stabilizes.

A cold probe, moving air or nearby radiant heat can influence the initial indicated temperature.Allow the probe to acclimate, shield the contact point from drafts where practical, and compare readings under the same operating conditions.

One probe shape cannot make reliable contact with every flat plate, small component, pipe or narrow slot.Select a flat spring-band, small-head, right-angle paddle or pipe-clamp Type K probe to match the target geometry.

A contact probe can conduct heat away from a thin or low-mass surface during a long measurement.Use a low-mass fast-response contact strip, minimize dwell time after stabilization, and repeat the reading to check consistency.

Typical Applications

Cleanroom wall-panel and door-surface checksAir-handling cabinet and duct-skin temperature comparisonPipe, valve and heat-exchanger surface measurementMotor housing and bearing-cap temperature surveysHeated plate, sealing jaw and process-tool verification

Technical Parameters

Representative construction for a professional single-input surface temperature meter is listed below; probe shape, cable length, response time and working temperature range should be selected for the target material and access conditions.

Core Material	PC/ABS handheld enclosure with TPE boot, LCD, silicone keypad, Type K miniature thermocouple socket, NiCr-Ni thermocouple conductors, spring-metal contact strip and stainless probe tube
Panel Thickness	Typically 2.0-3.0 mm for the molded meter enclosure wall
Effective Width	Approximately 60-75 mm across the handheld meter
Maximum Length	Approximately 165-190 mm for the meter body, excluding the detachable probe and cable
Steel Facing Thickness	Typically 0.3-0.8 mm for the probe shell, spring contact, shielding and fasteners
Core Density	Approximately 1100-1200 kg/m³ for the PC/ABS enclosure blend
Thermal Conductivity	Approximately 0.19-0.22 W/(m·K) for the PC/ABS enclosure blend
Surface Finish	Blue-gray fine-texture enclosure, black TPE protective boot, pale-green LCD, yellow Type K connector, black cable and satin-stainless probe tip
Joint Type	Keyed polarized Type K miniature socket with strain-relieved cable, angled stainless probe neck, resilient surface-contact strip, rear battery cover and folding kickstand
Customization	Available based on the intended application and operating environment.

Available Options

Fast-response spring-band probe for flat and uneven surfacesSmall-head contact probe for compact componentsRight-angle paddle probe for narrow accessPipe-clamp Type K probe for round tubingExtended thermocouple cable with polarized miniature connectorsProtective case, spare battery and desktop support stand

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