Product Overview

The KR‑2528A automatic mask visual‑field testing unit is dedicated PPE laboratory instrument. It quantifies the observable viewing range when a respirator / mask is worn on a standard head‑form, verifying whether mask‑induced visual obstruction meets regulatory thresholds.

Adopting high‑sensitivity optical‑sensor detection technology, the system performs automated measurement under computer control. It generates 3D visual‑field diagrams for intuitive assessment. This device complies with GB 2890, GB 2626, GB/T 32610, EN 149 and NIOSH 29 CFR 1910.134 requirements. Widely used in mask‑manufacturing QC labs, PPE product‑development departments and accredited third‑party protective‑equipment‑testing‑institutes.

Core Product Competitive Advantages

1. Precision optical‑sensor measuring system High‑performance light‑sensor array captures boundary data of blocked and visible zones. Calculation algorithm automatically computes visual‑field parameters, avoiding manual reading errors and improving result reproducibility.
2. PC‑centred operation with real‑time 3D rendering All test workflows are managed via external computer software. 3D‑graphic interface dynamically renders visual‑field distribution diagrams, enabling operators to directly observe mask‑occlusion effect without manual chart plotting.
3. High‑efficiency automated measurement cycles Full test for one specimen completes within 2‑10 minutes (adjustable by setting speed parameters). Short testing cycle supports higher‑throughput batch‑sample evaluation for production‑oriented laboratories.
4. Multi‑axis motor‑driven head‑form mechanism Motorised dummy‑head assembly automatically switches between left‑eye and right‑eye measuring positions. It also performs ±15° left‑and‑right rotational movement, simulating real‑world human‑head turning conditions for comprehensive visual‑field data collection.
5. Fully‑enclosed cabinet‑type mechanical housing Integrated dark‑chamber cabinet eliminates ambient‑light interference to optical‑sensor signals. Height‑adjustable levelling feet guarantee stable horizontal installation on uneven lab‑floor surfaces.

Complete Technical Parameter Table

Compliance Standards: GB 2890, GB 2626, GB/T 32610, EN 149, NIOSH 29 CFR 1910.134

Standard Complete Test Operating Workflow

1. Pre‑Test Preparation Place main cabinet on level workshop ground, adjust levelling feet for horizontal alignment. Connect power‑supply and communication cable linking instrument and control‑PC. Launch dedicated test software, finish system self‑check and sensor pre‑calibration.
2. Specimen Mounting Fit target mask / respirator firmly onto motor‑driven standard head‑form. Adjust strap tension to replicate real‑wearing posture, close cabinet outer doors to shield from surrounding ambient‑light.
3. Launch Automated Visual‑Field Test Trigger test‑start command on PC‑software. Head‑form automatically shifts measuring‑eye position and executes scheduled rotational motion. Optical sensors collect visual‑field boundary data continuously.
4. Data Review & Result Export Upon measurement completion, software outputs calculated visual‑field‑angle values and displays 3D visual‑field‑distribution chart. Users save raw datasets, export test‑reports for lab‑archiving and pass‑fail judgement against standard‑limit values.
5. Post‑Test Tidying Open cabinet door and remove mask specimen. Close software and power‑off main‑unit after batch‑testing finishes. Periodically inspect optical‑sensor cleanliness and head‑form mechanical‑drive performance.

Wide Industrial Application Scenarios

Respirator & Mask‑Manufacturing Enterprises

Visual‑field‑performance batch‑QC inspection for protective‑respirators; assess how mask shell‑shape and frame‑structure influence user’s viewing range during new‑product development.

PPE R‑D & Design Departments

Optimise mask outline‑structure design, reduce visual‑obstruction, balance protective‑performance and wearing‑ergonomics.

Occupational‑Safety & Medical‑Device‑Inspection‑Institutes

Carry‑out multi‑standard‑compliant visual‑field‑verification for respiratory‑protective‑products.

University Safety‑Protection‑Material‑Research‑Laboratories

Experimental‑research‑platform for mask‑ergonomics and visual‑obstruction‑related studies.

Third‑Party Accredited‑PPE‑Testing‑Organizations

Conduct formal visual‑field‑assessment and generate inspection‑documents for product‑certification‑audits.

Standard Factory‑Full‑Delivery Kit

1. KR‑2528A automatic mask visual‑field‑tester main enclosed‑cabinet unit
2. Motor‑driven multi‑axis standard anthropomorphic head‑form assembly
3. High‑sensitivity optical‑sensor detection‑module
4. Dedicated PC test‑analysis‑software and data‑communication‑cable
5. Power‑supply connecting‑cable
6. Multilingual printed‑operation‑manual complying with GB‑EN‑NIOSH‑relevant‑test‑specifications
7. Factory‑issued performance‑inspection‑certificate

Optional spare‑parts & custom‑options: alternative‑spec head‑form assemblies, custom‑voltage power‑supply‑adaptation.

Global Distributor & After‑Sales‑Support

We provide remote‑one‑on‑one operational guidance covering software‑operation, mask‑mounting procedure, sensor‑calibration and routine preventive‑maintenance. Spare‑parts stock includes optical‑sensor‑accessories and mechanical‑drive‑components. Bulk‑order customers can apply for custom‑power‑supply‑voltage variants for overseas‑market deployment. Regional‑exclusive‑agent privileges contain priority‑production‑scheduling, OEM private‑branding‑services and complete‑set high‑definition product‑marketing‑image‑resources.

Product‑Banner‑Marketing‑Slogan

KR‑2528A Mask Visual‑Field Tester | GB2890‑GB2626‑EN149‑NIOSH‑Compliant Auto‑3D‑Visual‑Field‑Evaluator For Respirator‑PPE‑QC‑Certification‑Testing

Core‑Feature‑Labels‑For‑Product‑Images

GB2890‑GB2626‑GB/T32610‑EN149‑NIOSH‑Compliant, Automatic‑Mask‑Visual‑Field‑Test, 300mm‑Semi‑Arc‑Radius, ≤120°‑Field‑Of‑View‑Range, 62.5mm‑Standard‑Pupil‑Distance, Motor‑Driven‑Head‑Form, Auto‑Left‑Right‑Eye‑Switch, ±15°‑Auto‑Rotation, PC‑Software‑Control, Real‑Time‑3D‑Visual‑Field‑Rendering, 2‑10Min‑Fast‑Test‑Cycle, Light‑Shield‑Enclosed‑Cabinet, Respirator‑Mask‑Visual‑Obstruction‑Ergonomics‑Evaluation

Safety‑Operation‑Reminder

Keep cabinet doors fully closed throughout measuring cycle to avoid ambient‑light interfering optical‑sensor readings. Prevent dust contamination on optical‑sensor surfaces. Check head‑form drive‑mechanism regularly. Ensure reliable equipment‑grounding before power‑on.