Wholesale Hospital Grade Negative Pressure Meter Factory, Manufacturers

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Product Introduction

Precision instrumentation engineered for hospital grade negative pressure meter applications

The Hospital Grade Negative Pressure Meter is installed at the entrance to airborne infection isolation rooms, negative pressure operating theatres, and biosafety-controlled clinical spaces to give staff an immediate, continuous visual confirmation that the room is holding the correct pressure relationship relative to the adjacent corridor. Unlike a general industrial differential gauge, this instrument is specifically packaged for wall or door-frame mounting at a height and location where entering and exiting staff cannot avoid seeing it before opening the door.

A sensitive diaphragm-based sensing element resolves the small negative pressure differentials — typically only a few pascals — that are sufficient to prevent airborne particles from migrating out of an isolation room, while an integral audible and visual alarm alerts staff immediately if the pressure relationship is lost due to a door being propped open, an HVAC fault, or a filter change in progress. This immediate local feedback is critical in infection control applications, where a delayed response to a lost pressure differential directly increases airborne transmission risk.

Every sensing element is calibrated in our 100,000-level clean workshop under controlled, draft-free conditions to guarantee accuracy at the very low end of the pressure scale where isolation room readings occur, and the alarm threshold is factory-set to match common infection control guideline requirements before being verified against a certified low-pressure reference. Calibration and alarm threshold data for every unit is logged in our Advanced MES digital tracking system against its serial number to support infection control compliance audits.

The meter is available with a data logging output option for connection to a building automation or infection control monitoring system, allowing continuous historical pressure records to be produced automatically for regulatory inspection, in addition to the local visual and audible alarm that protects staff and patients in real time.

Core Advantages

Engineered for reliability where it matters most

0-50Pa

Typical Isolation Room Range

±2%

Accuracy Class

Audible + Visual

Integral Alarm Indication

Continuous Room Pressure Confirmation — Wall-mounted at room entry point gives staff immediate visual confirmation before opening the door
Integral Audible & Visual Alarm — Alerts staff immediately if the negative pressure relationship is lost for any reason
Low-Pressure Diaphragm Sensitivity — Resolves the small pascal-level differentials that are sufficient to prevent airborne particle migration
Factory-Set Alarm Threshold — Configured to match common infection control guideline requirements before shipment
Optional Data Logging Output — Connects to building automation or infection control systems for automatic historical compliance records
MES Traced Production — Serial-linked quality data from raw material to shipment for full after-sale traceability

Specifications

Standard technical parameters

Dial Size	4.0" (100mm) analog with digital readout option
Accuracy Class	Class 2 Full Scale (Class 1.6 on request)
Pressure Range	0-25 Pa, 0-50 Pa (custom low ranges available)
Sensing Element	Stretched Diaphragm, Low-Pressure Grade
Alarm Type	Integral Audible Buzzer + Visual LED Indicator
Data Output	Optional 4-20mA or Digital Logging Interface
Case Material	ABS Plastic, Wall or Door-Frame Mount
Connection Ports	Two Sensing Tubes (Room Side / Corridor Side)
Power Requirement	24VDC (for alarm and data logging models)
Media Compatibility	Clean, Dry, Non-Corrosive Hospital Room Air

Technical Summary

Order & production details

MOQ	150 Pieces (Standard Range Models)
Lead Time	22-28 Days (alarm threshold configuration and calibration)
Packaging	Individual boxes with sensing tube accessories included
Certifications	ISO9001:2015, CE, RoHS Compliant
Raw Materials	ABS Engineering Plastic, Silicone Diaphragm, Electronic Alarm Components
Customization	Pressure range, alarm threshold, data output type, mounting style
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 hospital grade negative pressure meter performance is mission-critical

Airborne Infection Isolation Rooms

Primary continuous monitor confirming negative pressure containment is maintained relative to the corridor

Negative Pressure Operating Theatres

Confirms correct pressure relationship for procedures involving airborne pathogen risk

Biosafety Laboratory Anterooms

Monitors the pressure cascade between laboratory zones and adjacent gowning or anteroom spaces

TB and Respiratory Isolation Wards

Continuous compliance monitoring for tuberculosis and other airborne respiratory isolation protocols

Pharmaceutical Containment Suites

Confirms negative pressure containment for potent compound handling areas in pharmaceutical manufacturing

Technical Highlights & QC

Every unit validated for zero-defect performance

Low-End Zero Calibration: Zero point is set under draft-free conditions in a controlled chamber to guarantee accuracy at the low end of the isolation room scale.
Alarm Threshold Verification: Each unit's alarm trip point is verified against the specified threshold using a certified low-pressure reference source.
Alarm Function Cycling Test: Audible and visual alarm components are cycled repeatedly to confirm reliable activation over extended service life.
Diaphragm Leak Test: Each diaphragm assembly is pressure-decay tested to confirm zero leakage across the sensing element and case seals.
Data Output Signal Verification: Units with data logging output are tested across the full range to confirm signal accuracy matches the analog display.
MES Serial Tracking: Range, alarm threshold, and calibration sweep data are stored digitally against each unit's serial number.

Environment & Media Compatibility

Engineered for demanding operating environments

Clinical Environment Cleanliness: Sealed case construction suits the strict cleanliness expectations of isolation room and operating theatre entrances.
Door-Frame Mounting Location: Case and mounting hardware are designed for durable installation at high-traffic door-frame locations.
Continuous 24/7 Operation: Electronic alarm components are rated for the continuous, uninterrupted operation required of infection control monitoring.
Sterilization-Adjacent Storage: Case materials resist the cleaning and disinfection agents commonly used around isolation room entrances.
HVAC System Pressure Fluctuation: Diaphragm sensitivity and damping are tuned to avoid nuisance alarms from normal, brief HVAC system pressure fluctuation.
Frequent Door Opening Cycling: Alarm logic is designed to accommodate brief pressure loss during normal door opening without triggering a false alarm.

Pro Tips for Longevity

Installation & maintenance best practices

Position at Clear Staff Eye Level: Mount the meter where entering and exiting staff cannot avoid seeing it before opening the isolation room door.
Set Alarm Delay for Door Cycling: Configure a brief alarm delay to avoid nuisance alerts during normal, brief door opening rather than a sustained pressure loss.
Verify Calibration During Room Commissioning: Cross-check the meter against a certified reference during initial isolation room commissioning before clinical use begins.
Include in Routine Infection Control Audits: Add the meter to scheduled infection control rounds to confirm continued accurate operation and alarm function.
Route Sensing Tubes Away from Draft Sources: Position sensing tube inlets away from direct door drafts or HVAC diffusers that could cause misleading momentary readings.
Log Alarm Events for Compliance Review: If connected to a data logging system, review alarm event logs periodically as part of infection control compliance reporting.

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.
Complete Installation Kit Packaging: Each unit ships with sensing tubes and mounting hardware included for streamlined isolation room installation.
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 range samples available within 10-12 working days given the alarm configuration and calibration process.
After-Sales Support: Our technical team provides installation guidance and alarm configuration documentation for your infection control compliance 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 Hospital Grade Negative Pressure Meter Manufacturers and Wholesale Hospital Grade Negative 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 typically required for isolation rooms?

Most infection control guidelines call for at least 2.5 Pa negative pressure relative to the corridor; consult your local regulatory guidance for the exact required value.

Does the alarm trigger every time the door opens?

No, a configurable brief delay prevents nuisance alarms during normal door opening while still alerting staff to a sustained pressure loss.

Can this meter connect to our building automation system?

Yes, models with the optional 4-20mA or digital data logging output can be integrated with a BAS for centralized compliance monitoring.

How is the alarm threshold configured?

The threshold is factory-set to your specified value based on common infection control guidelines and can be field-adjusted by a qualified technician.

What power supply does the unit require?

Models with alarm and data logging functions require a 24VDC supply; passive analog-only models require no power.

How often should the meter be recalibrated?

Given its infection control safety role, verification against a certified reference is recommended at least annually or per your facility's compliance schedule.

Can this be used for biosafety laboratory pressure cascades?

Yes, the same low-pressure sensing technology is well suited to monitoring pressure relationships between laboratory zones.

What happens during a power outage?

The analog pressure display continues to function passively; electronic alarm and logging functions require backup power for continued operation.

Is a compliance data log automatically generated?

Only with the optional data logging output connected to a monitoring system; the standard analog unit provides local visual indication only.

Can the meter be supplied pre-configured to a specific room's requirements?

Yes, we can pre-set the alarm threshold and range to match your facility's specific isolation room design pressure at the factory.