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产品名称：NISHINO不锈钢微压计压力表过压防止型

产品型号：AT-G38-75X10kPa20kPa30kPa

产品报价：1700

产品特点：AT-G3/8-75X10kPa 20kPa 30kPa 50kPa 100kPa西野計器NISHINO不锈钢微压计压力表过压防止型。内置机械式过压限位装置：量程 1.5～3 倍瞬时超压自动锁止膜盒元件，避免微压敏感膜盒过载变形报废，微压工况最容易出现瞬间窜压，普通微压表极易损坏，本款可耐受短时冲击超压。泄压复位：超压消除后指针自动回归量程，无需返厂维修；过压保护值按 JIS B7505 压力表

AT-G38-75X10kPa20kPa30kPaNISHINO不锈钢微压计压力表过压防止型的详细资料：

AT-G3/8-75X10kPa 20kPa 30kPa 50kPa 100kPa西野計器NISHINO不锈钢微压计压力表过压防止型

NISHINO 西野計器 AT-G3/8-75 不锈钢过压防止型微压压力表

型号：AT-G38-75×10/20/30/50/100kPa（5种压力值kPa正压微压计）

AT-G38-75X10kPa 20kPa 30kPa 50kPa 100kPa西野計器NISHINO不锈钢微压计压力表过压防止型

NISHINO 西野計器 AT-G3/8-75 不锈钢过压防止型微压压力表

型号：AT-G38-75×10/20/30/50/100kPa（5种压力值kPa正压微压计）

一、产品核心特点（过压防止 + 不锈钢本体，JIS 标准）

1、过压防护结构（核心卖点）

  1. 内置机械式过压限位装置：量程 1.5～3 倍瞬时超压自动锁止膜盒元件，避免微压敏感膜盒过载变形报废，微压工况最容易出现瞬间窜压，普通微压表极易损坏，本款可耐受短时冲击超压。

  2. 泄压复位：超压消除后指针自动回归量程，无需返厂维修；过压保护值按 JIS B7505 压力表规范出厂标定。

  3. 量程覆盖：0～1kPa~0～50kPa（含负压 /±kPa），全量程标配过压防止结构，专用于低压微气体测量。

2、不锈钢材质配置（防腐耐用）

  • 表壳：SUS304 不锈钢密闭壳体（电解抛光），防水防尘，潮湿、酸碱腐蚀工况可用；

  • 接液敏感膜盒 / 接头：SUS316L 不锈钢，可测弱腐蚀性干燥气体，区别于铜机芯普通微压表；

  • 表盘规格：标准 Φ75mm，安装螺纹G3/8（JIS 管用螺纹），径向 / 背装两种安装方式。

3、精度与实用配置

  1. 精度 **±2.0% FS（JIS 精度等级）**，微压段刻度细密，最小分度 0.1kPa，读数精准；

  2. 标配外置零点微调旋钮，现场温度漂移、安装偏移可就地归零校正；

  3. 可选甘油充油防震款，适配管路脉动、设备震动环境，指针无抖动；

  4. 全系列符合JIS、ISO、DIN 螺纹通用标准，接头可兼容欧美管路。

二、细分应用场景

1、暖通净化 & 洁净车间（主力场景）

洁净厂房、医药无尘室、电子无尘车间：监测房间正负压、高效滤网压差，压差升高代表滤网堵塞，及时提醒更换；手术室负压隔离监测。

2、燃烧 / 燃气热能设备

燃气燃烧机、烘箱、锅炉、瓦斯调压站：天然气 / 液化气低压供气压力监控，瞬时气压冲高时过压结构保护仪表，杜绝仪表失效造成供气失控。

3、环保废气 & 除尘系统

锅炉烟道风压、除尘风机进出口压差、废气处理管路：通过微压差判断风机故障、滤袋堵塞，环保设备低压测压。

4、食品 / 医药制程

酿造、乳制品、制药无菌管路：无菌气体吹扫压力、罐内微正压监控，SUS316 接液满足食品医药洁净防腐需求。

5、轻工与设备配套

涂装烘干线、包装充气设备、空压机低压辅气回路、实验室气体管路微压 / 气密性检测。
三、规格
项目规格详情
精度等级±1.6% FS（工业微压 1.6 级）
接液材质（不锈钢款）接头 SUS304、波登管 SUS304不锈钢
表壳不锈钢壳体 SUS304
视窗亚克力
过压结构内部限位挡块，瞬时超压 1.5 倍量程不会拉坏波登管
使用温度-5℃～+45℃
安装方式径向底部直装
适用介质弱腐蚀性气体、潮湿气源、弱酸水汽（普通黄铜款仅洁净空气 / 清水）

AT-G3/8-75X10kPa 20kPa 30kPa 50kPa 100kPa西野計器NISHINO不锈钢微压计压力表过压防止型

四、（5种压力值kPa正压微压计）量程明细

0～10kPa、0～20kPa、0～30kPa、0～50kPa、0～100kPa

推荐使用区间：量程 30%～70%，延长仪表寿命

五、产品特点

过压防止：微压表通病易过载报废，西野内置限位结构，气源瞬间冲压保护机芯

不锈钢定制：相比黄铜款耐水汽、弱腐蚀，化工废气、水处理、腐蚀性通风管路专用

日标原厂：NISHINO 西野全日本产，燃烧机、燃气调压、暖通风压、小型气动设备标配

六、选型备注

洁净无腐蚀工况选黄铜标准款；潮湿 / 微量腐蚀介质选SUS 不锈钢款

气源脉动冲击前端加装缓冲器，避免指针抖动

AT-G3/8-75X10kPa 20kPa 30kPa 50kPa 100kPa西野計器NISHINO不锈钢微压计压力表过压防止型

AT-G3/8-75, Ranges: 10kPa, 20kPa, 30kPa, 50kPa, 100kPa | NISHINO Low Pressure Gauge, Stainless Steel with Overpressure Protection
NISHINO AT-G3/8-75 Stainless Steel Low Pressure Gauge with Built-in Overpressure Prevention
Model No.: AT-G3/8-75, Available Ranges: 10/20/30/50/100kPa (5 positive-pressure low-range options)

I. Core Product Features (Overpressure Protection + Stainless Steel Construction, Compliant with JIS Standards)

1. Built-in Overpressure Protection (Key Advantage)

Equipped with an internal mechanical overpressure limiting mechanism: the sensing capsule locks automatically under instantaneous overpressure of 1.5~3 times full scale to prevent permanent deformation or damage of the sensitive low-pressure capsule. Ordinary low-pressure gauges are prone to breakdown from sudden pressure surges commonly seen in low-pressure applications, while this model withstands short-term pressure spikes.
Automatic reset after pressure relief: the pointer returns to original measuring range once excess pressure subsides; no factory repair required. Overpressure threshold is factory-calibrated per JIS B7505 standard for pressure gauges.
Available measuring ranges: 0~1kPa up to 0~50kPa (including vacuum and ±kPa compound ranges). All ranges come with standard overpressure protection, specially designed for low-pressure dry gas measurement.

2. Corrosion-resistant All-stainless Construction

  • Case: Sealed SUS304 stainless steel with electrolytic polishing, waterproof and dustproof for humid, acidic and alkaline corrosive working environments.

  • Wetted capsule & process connection: SUS316L stainless steel, compatible with mildly corrosive dry gas; superior to conventional brass-cased low-pressure gauges.

  • Dial size: Standard Ø75mm; process thread: G3/8 (JIS standard pipe thread); two mounting options: bottom radial mount & back mount.

3. Accuracy & Practical Configurations

Accuracy: ±2.0% FS (JIS accuracy class) with finely graduated scale for low-pressure segments, minimum scale division at 0.1kPa for precise readings.
External zero-adjustment knob as standard, enabling on-site zero calibration to offset temperature drift and installation-induced pointer offset.
Glycerine-filled dampened version optional for piping pulsation and mechanical vibration conditions to eliminate pointer oscillation.
Full product line complies with JIS, ISO and DIN thread standards for seamless compatibility with European & American piping fittings.

II. Typical Application Fields

1. HVAC & Cleanroom Systems (Primary Application)

Clean manufacturing workshops, pharmaceutical sterile rooms and electronics cleanrooms: monitoring room positive/negative pressure and differential pressure across HEPA filters; rising differential pressure signals clogged filter for timely replacement; negative-pressure monitoring for surgical isolation rooms.

2. Combustion & Gas Thermal Equipment

Gas burners, industrial ovens, boilers and gas pressure regulating stations: low supply pressure monitoring for natural gas and LPG; built-in overpressure safeguard protects instruments against sudden gas pressure surge to avoid gas supply malfunction caused by gauge failure.

3. Environmental Exhaust & Dust Collection Systems

Boiler flue gas draft pressure, differential pressure across inlet/outlet of dust removal fans and exhaust treatment pipelines: differential pressure readings detect fan malfunction or bag filter clogging for low-pressure measurement on environmental protection equipment.

4. Food & Pharmaceutical Production Lines

Brewing, dairy and pharmaceutical sterile piping: monitoring sterile purge gas pressure and tank slight positive pressure; SUS316 wetted parts satisfy hygienic and anti-corrosion requirements for food & pharmaceutical industries.

5. Light Industry & General Equipment Matching

Coating drying tunnels, inflation packaging machines, low-pressure auxiliary air loops for air compressors, and gas tightness / low-pressure testing for laboratory gas pipelines.

III. Technical Specifications

表格
ItemSpecification
Accuracy Class±1.6% FS (Class 1.6 industrial low-pressure grade)
Wetted Material (Stainless Steel Version)Connection: SUS304; Bourdon Tube: SUS304 stainless steel
Case MaterialSUS304 stainless steel
WindowAcrylic
Overpressure StructureInternal mechanical stopper; Bourdon tube intact under 1.5×FS instantaneous overpressure
Operating Temperature-5℃ ~ +45℃
Mounting StyleBottom radial direct mount
Compatible MediumMildly corrosive gas, humid air, weak acid vapor; standard brass version only for clean dry air / fresh water

IV. Available Positive Pressure Ranges (5 Options)

0~10kPa, 0~20kPa, 0~30kPa, 0~50kPa, 0~100kPa
Recommended working range: 30%~70% of full scale to extend service life

V. Product Highlights

  1. Overpressure Prevention: Conventional low-pressure gauges easily fail from overload; built-in internal stop structure of NISHINO safeguards internal movement against instantaneous air pressure spike.

  2. Custom Stainless Steel Build: Outperforms brass type in moisture and mild corrosion resistance, ideal for chemical waste gas, water treatment and corrosive ventilation duct applications.

  3. Original Japanese Manufacture by NISHINO: Made-in-Japan OEM gauge standard for gas burners, gas pressure regulation, HVAC draft monitoring and compact pneumatic equipment.

VI. Selection Guidance

  • Standard brass model: for dry non-corrosive clean working conditions

  • SUS stainless steel model: for humid service or medium with trace corrosive components

  • Install pulsation dampener upstream at piping inlet for fluctuating gas supply to prevent pointer vibration

Model Reference: AT-G3/8-75, Ranges:10kPa/20kPa/30kPa/50kPa/100kPa | NISHINO Stainless Steel Low Pressure Gauge with Overpressure Protection.


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