Cleanroom Testing and Validation Instruments

Humidity Calibrator

A transportable humidity and temperature calibration chamber for creating stable setpoints around multiple probes, transmitters and reference sensors.

Stable mixed-flow humidity setpoints.
Six-probe sealed test chamber.
Programmable touch control.

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Product Introduction

This bench-top calibrator combines a sealed stainless working chamber with mixed-flow humidity generation, thermoelectric temperature control and an integrated reference channel. Dry and humidified air streams are circulated through the chamber to establish repeatable test conditions without an external compressed-air supply. A front touchscreen manages setpoints, stabilization status and programmed sequences, while interchangeable door sleeves accommodate different probe diameters and keep each insertion point sealed.

Key Features

Dynamic mixed-flow generation supports multiple relative-humidity setpoints in one session.

Thermoelectric chamber control limits temperature-driven errors during humidity comparison.

Six sealed probe ports allow several instruments to share the same controlled condition.

Integrated reference input displays chamber conditions beside the programmed setpoint.

On-screen sequence control reduces repetitive manual changes during multi-point calibration.

Transportable bench enclosure supports laboratory use and on-site instrument checks.

Customer Product Concerns

Reliable humidity calibration depends on placing the instrument under test and the reference in the same stable temperature and water-vapor environment while preventing ambient leakage around the probes.

Single-point checks can miss nonlinear sensor error across the working humidity range.Programmable sequences expose every connected instrument to several controlled relative-humidity setpoints.

Temperature mismatch between a probe and its reference can distort relative-humidity results.A circulated thermoelectric chamber holds the devices under test and reference sensor at one controlled temperature.

Calibrating probes one by one consumes technician time and creates inconsistent conditions.Six sealed door ports support simultaneous comparison of several probes in the same working volume.

Different probe diameters can leak ambient air into the chamber.Interchangeable sleeves and blanking plugs seal each occupied or unused port around the actual probe body.

Typical Applications

Cleanroom humidity probe calibrationEnvironmental transmitter verificationWarehouse and stability-room sensor checksHVAC humidity instrument maintenanceLaboratory reference-hygrometer comparison

Technical Parameters

Representative transportable humidity-calibrator construction is listed below; chamber door, probe sleeves, reference interface and operating range can be configured for the calibration workload.

Core Material	Powder-coated aluminum enclosure, 304 stainless steel chamber, clear polycarbonate door insert and measurement electronics
Panel Thickness	Typically 1.5-2.0 mm for aluminum enclosure panels
Effective Width	Approximately 450 mm across the bench-top enclosure
Maximum Length	Approximately 406 mm from front chamber door to rear enclosure panel
Steel Facing Thickness	Typically 1.0-1.5 mm for the stainless chamber liner and port plate
Core Density	Approximately 2700 kg/m³ for the aluminum enclosure
Thermal Conductivity	Approximately 167-205 W/(m·K) for the aluminum enclosure
Surface Finish	Neutral light-gray powder coat with a dark graphite control bezel, satin stainless chamber ring and black elastomer probe sleeves
Joint Type	Gasketed circular chamber door with six interchangeable probe sleeves, heated sample-loop fittings, USB and Ethernet interfaces
Customization	Available based on the intended application and operating environment.

Available Options

Six-port probe doorCustom probe-diameter sleevesExternal chilled-mirror reference connectionExtended humidity rangeExtended temperature rangeAutomated multi-point calibration software

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