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Product Introduction

Precision instrumentation engineered for clean room differential pressure meter applications

The Clean Room Differential Pressure Meter is engineered for the pressure-cascade control that defines cleanroom classification integrity, where each zone must be held at a specific small positive or negative pressure relative to its neighbor to control particle and contaminant migration between spaces of differing cleanliness class. The instrument's low-profile case is designed to mount flush or near-flush to a cleanroom wall panel, minimizing the ledges and crevices where particulate can accumulate — a critical detail in GMP pharmaceutical and semiconductor cleanroom design where every surface detail affects particle counts.

A precision diaphragm sensing element, selected specifically for stability at the very low pressure differentials — often under 15 pascals — used in cleanroom cascade design, drives a clear analog dial through a low-friction movement, giving operators an immediate visual confirmation that the pressure relationship between their zone and the adjacent space remains correctly established throughout the shift. Two sensing ports connect via smooth-bore tubing to each side of the monitored wall, avoiding any protrusions on the cleanroom-facing surface beyond the dial itself.

Calibration takes place in our 100,000-level clean workshop under the same low-turbulence, controlled conditions the finished instrument will monitor in service, since a diaphragm gauge calibrated in a drafty general workshop cannot reliably resolve single-digit pascal differentials once installed. Calibration and cleaning validation records for every unit are logged in our Advanced MES digital tracking system against its serial number, supporting the equipment qualification documentation required for GMP cleanroom validation.

The case is available in a smooth, easy-clean finish compatible with common cleanroom wall panel surface disinfection protocols, and mounting hardware avoids exposed fasteners on the cleanroom-facing side wherever the panel design allows, keeping the instrument compliant with the surface cleanability standards that GMP and semiconductor cleanroom operators must maintain.

Core Advantages

Engineered for reliability where it matters most

0-15Pa to 0-60Pa

Cascade Pressure Range Options

±2%

Accuracy Class

Low-Profile

Flush Wall-Panel Mounting

Low-Profile Flush Mounting — Minimizes ledges and crevices on the cleanroom wall face where particulate could otherwise accumulate
Ultra-Low Pressure Sensitivity — Diaphragm element resolves the single-digit pascal differentials used in cleanroom cascade design
Controlled-Condition Calibration — Calibrated in the same low-turbulence conditions the instrument will monitor, unlike gauges calibrated in a general workshop
Easy-Clean Surface Compatibility — Smooth finish and minimal exposed fasteners suit common cleanroom wall panel disinfection protocols
GMP Validation Documentation — Calibration and cleaning records support the equipment qualification paperwork required for cleanroom validation
MES Traced Production — Serial-linked quality data from raw material to shipment for full after-sale traceability

Specifications

Standard technical parameters

Dial Size	2.5" (63mm), 4.0" (100mm)
Accuracy Class	Class 2 Full Scale (Class 1.6 on request)
Pressure Range	0-15 Pa, 0-25 Pa, 0-60 Pa (custom low ranges available)
Sensing Element	Precision Diaphragm, Low-Turbulence Calibrated
Connection Ports	Two Smooth-Bore Sensing Ports (Zone A / Zone B)
Case Material	Stainless Steel or Cleanroom-Grade ABS, Easy-Clean Finish
Mounting Style	Flush or Near-Flush Wall Panel Mount
Window Material	Scratch-Resistant Polycarbonate
GMP Compatibility	Documented Cleaning Validation Available
Media Compatibility	Clean, Dry, Non-Corrosive Cleanroom Air

Technical Summary

Order & production details

MOQ	150 Pieces (Standard Low-Range Models)
Lead Time	20-25 Days (controlled-condition calibration process)
Packaging	Individual clean-packed boxes suitable for cleanroom material transfer protocols
Certifications	ISO9001:2015, CE, RoHS Compliant, Cleaning Validation Documentation Available
Raw Materials	304/316L Stainless Steel, Cleanroom-Grade ABS, Silicone Diaphragm
Customization	Pressure range, case material, mounting style, port configuration
Port of Export	Ningbo / Shanghai
Payment Terms	T/T, L/C at Sight, Western Union

Our Partners

Trusted by leading brands worldwide

Industrial Applications

Where clean room differential pressure meter performance is mission-critical

Pharmaceutical GMP Manufacturing Suites

Confirms the pressure cascade between grade A/B/C/D classified zones remains within validated limits

Semiconductor Fabrication Cleanrooms

Monitors pressure differential between cleanroom classes to control particle migration around wafer processing areas

Sterile Compounding Pharmacy Rooms

Verifies correct pressure relationship between compounding, anteroom, and buffer areas per pharmacy compounding standards

Medical Device Manufacturing Cleanrooms

Confirms cascade pressure integrity for controlled environments used in sterile device assembly

Biotechnology Process Suites

Monitors zone-to-zone pressure relationships in biotech manufacturing areas handling controlled biological materials

Technical Highlights & QC

Every unit validated for zero-defect performance

Controlled-Condition Zero Calibration: Zero point is set within a low-turbulence controlled chamber matching the conditions the instrument will monitor in service.
Diaphragm Leak Test: Each diaphragm assembly is pressure-decay tested to confirm zero leakage across the sensing element and case seals.
Surface Cleanability Verification: Case finish is inspected to confirm compatibility with common cleanroom surface disinfection and wipe-down protocols.
Full-Scale Linearity Sweep: Each unit is stepped through the full low-pressure range to verify linearity within the specified accuracy class.
Port Cross-Talk Test: High and low sensing ports are tested independently to confirm no internal leakage path exists between the two chambers.
MES Serial Tracking: Range, cleaning validation status, and calibration sweep data are stored digitally against each unit's serial number.

Environment & Media Compatibility

Engineered for demanding operating environments

Ultra-Low Turbulence Cleanroom Air: Diaphragm sensitivity is specifically tuned for accurate reading in the controlled, low-turbulence airflow typical of classified cleanrooms.
Frequent Surface Disinfection: Case materials and finish resist repeated exposure to common cleanroom disinfectant and wipe-down chemicals.
Particle-Sensitive Surroundings: Low-profile, crevice-minimized case design avoids becoming a particle accumulation point on the cleanroom wall.
GMP-Regulated Environments: Documentation and construction support the equipment qualification requirements of pharmaceutical GMP validation.
Stable Cleanroom Ambient Temperature: Diaphragm calibration remains stable across the tightly controlled temperature range typical of classified cleanroom environments.
Continuous Monitoring Duty Cycle: Movement is rated for the continuous, uninterrupted monitoring duty expected of permanently installed cleanroom instrumentation.

Pro Tips for Longevity

Installation & maintenance best practices

Verify Zero Under Actual Room Conditions: Confirm the zero reading with both ports at the same pressure once installed, since cleanroom airflow patterns can differ from the calibration bench.
Keep Sensing Tubes Free of Kinks: Route smooth-bore sensing tubing without kinks or sharp bends that could introduce a false reading through restricted airflow.
Include in Routine GMP Requalification: Add the gauge to your facility's periodic equipment requalification schedule as part of ongoing cleanroom validation.
Clean the Case Per Validated SOP: Follow your facility's validated cleaning standard operating procedure when wiping down the gauge case and window.
Document Any Deviation Immediately: Record any out-of-range reading immediately per your GMP deviation procedure, since cascade pressure loss can affect product quality.
Position Ports to Represent True Zone Pressure: Locate sensing ports away from direct diffuser airflow or door swing paths to capture a representative zone pressure reading.

Payment & Logistics

Reliable global supply chain from factory to your site

Flexible Payment Terms: We support T/T (30% deposit, balance before shipment), L/C at sight for large orders, and secure B2B trade assurance platforms for new customers.
Global Freight Options: Sea freight from Ningbo or Shanghai for bulk orders; DHL, FedEx, or UPS air express for urgent sample and small-batch shipments.
Clean-Packed Shipping: Units are packed in a manner compatible with cleanroom material transfer and de-gowning protocols upon receipt.
Full Export Documentation: Commercial invoice, packing list, certificate of origin (CO), material certificates, and CE declaration of conformity provided with every shipment.
Sample Lead Time: Standard low-range samples available within 10-12 working days given the controlled-condition calibration process.
After-Sales Support: Our technical team provides installation guidance and equipment qualification documentation to support your GMP validation team.

About Us

Zhoushan Jiaerling Meter Co., Ltd. — 20 years of precision manufacturing

Zhoushan Jiaerling Meter Co., Ltd. was established in 2004. It is China Clean Room Differential Pressure Meter Manufacturers and Wholesale Clean Room Differential Pressure Meter Factory, which is a high-tech enterprise integrating design, research and development, manufacturing, import and export trade.

The company is located in Zhoushan City, Zhejiang Province, covering an area of 15,000 square meters, equipped with a 100,000-level clean workshop, conventional production and assembly workshop, automated production workshop, new laboratory and comprehensive office building.

After more than 20 years of hard work and development, the company has a stable design and development, production team, and advanced production and testing equipment. The company specializes in the production of various types of pressure gauges with complete specifications, and the annual output of pressure gauges reaches 6 million. In order to further develop, the company not only seeks improvement in technology, but also pays more attention to product quality and after-sales service. The company's purpose is to "regard quality as life, survive by reputation, promote development by technology, and serve customers with high-quality brands". The products are sold all over the world and are well received by domestic and foreign customers.

In 2019, the company participated in the compilation of the standard T/CECS10012-2019 "Gas Heating Hot Water Boiler and Water Heater Water Circuit Components" of the China Engineering Construction Standardization Association.

Under the implementation of modern and digital enterprise management, the company has successfully introduced the advanced MES system in 2023, and the order process is fully visualized to track data, ensuring the continuity of production and improving production efficiency.

The company will continue to adhere to the principles of excellence, accuracy, reliability, continuous improvement, and meeting customer needs, hoping to share harmony and prosperity with friends across the country.

Honor

Certifications and proprietary achievements

High-Tech Enterprise

Proprietary

Frequently Asked Questions

Everything you need to know before specifying or ordering

What pressure differential is typical between cleanroom zones?

Common GMP cascade design uses 10-15 Pa steps between adjacent classified zones; consult your facility's validated design specification for exact values.

Can this gauge be used for semiconductor cleanroom applications?

Yes, the same low-turbulence calibrated diaphragm technology suits semiconductor fabrication cleanroom pressure cascade monitoring.

Is cleaning validation documentation available?

Yes, documentation supporting your equipment cleaning validation is available as an added option for GMP-regulated facilities.

How is the gauge mounted to minimize particle accumulation?

A low-profile, flush or near-flush mounting design minimizes exposed ledges and crevices on the cleanroom-facing wall surface.

Why does calibration need to happen under controlled conditions?

At single-digit pascal differentials, ordinary workshop drafts can introduce calibration error that would not occur in a properly controlled chamber.

What case material is recommended for pharmaceutical GMP use?

316L stainless steel is commonly specified for pharmaceutical GMP areas requiring the highest level of surface cleanability and chemical resistance.

How often should the gauge be requalified?

Requalification frequency should follow your facility's GMP equipment validation schedule, typically annual or per your quality system requirements.

Can the gauge trigger an alarm if pressure cascade is lost?

Standard units provide local visual indication only; consult us for alarm contact or building automation integration options if required.

What is the expected response time to a pressure change?

Response is typically near-instantaneous for the diaphragm element, limited mainly by sensing tube length and any restriction in the tubing run.

Can you supply a custom pressure range for our specific cascade design?

Yes, custom low-pressure ranges can be configured to match your facility's specific validated cascade design values.