一、液压设备

1. 小型注塑机、立式注塑机

   锁模低压、顶针油压、射胶低压回路监测，3MPa 量程刚好匹配低压预压油路。

2. 机床液压站

   磨床、铣床、冲床、油压夹具夹紧压力，工装夹紧油压多在 1～2.5MPa 区间。

3. 液压升降平台、小型油压顶升设备

   升降负载低压油压显示，过载预警。

4. 橡胶硫化机、小型油压热压机

   平板低压合模压力监测。

二、气动空压机 / 空压系统

1. 小型螺杆空压机、活塞空压机

   二次稳压后低压供气压力（工厂标准供气 0.5～0.8MPa，富余量程容错）。

2. 储气罐、气动控制柜面板

   车间集中供气总管压力监测，嵌入式法兰安装适合电控柜开孔。

3. 气动自动化流水线、气缸增压回路

   增压阀输出低压段压力显示。

三、水处理、供水、清洗设备

1. 纯水机、反渗透 RO 设备

   低压预处理管路压力（原水、前置过滤段压力普遍 1～2.5MPa）。

2. 小型高压清洗机低压进水侧、管道增压泵

   进水稳压监测。

3. 楼宇二次供水、小型供水加压机组

   生活供水管道压力监控。

四、橡塑、包装机械

1. 吹膜机、挤出机冷却水路

   冷却水循环管路水压监测。

2. 全自动包装机、贴标机、气动封口机

   整机气源压力面板显示。

3. 发泡设备低压供气回路

五、通用工业配套

1. 锅炉辅机冷却水路、小型换热站

   循环水低压压力监测。

2. 压铸机冷却水路、模具水路

3. 实验室试压台、小型液压测试工装

   低压试压 0～3MPa 量程精准观测。

4. 工程机械附属低压油路

   小型农机、小型工程机械液压辅助回路。

六、选型适配优势（为什么该型号适合以上场景）

1. Φ100 大表盘，远距离读数清晰，车间设备面板标配；

2. BU 背部法兰嵌入式安装，直接装控制柜 / 设备面板，美观整洁；

3. G3/8 标准液压气动常用螺纹，管路接头通用性强；

4. 0～3MPa 覆盖绝大多数中低压水、气、油工况，不会量程过大导致读数精度差；

5. 日本DK第一计器DAIICHI KEIKI压力表，抗轻微压力脉动，油泵、空压机抖动环境指针不频繁晃动。

BT3/8X100X3MPa东洋计器兴业TOKO

BT3/8×100×3MPa TOKO (TOYO KEIKI KOGYO)

Complete Specifications of TOKO Pressure Gauge Model BT3/8×100×3MPa

1. Model Code Breakdown (BT3/8×100×3MPa)

• BT: Mounting Style – Type B case with rear flange, bottom radial connection (fixed flange fitted on dial rear for flush mounting on panels and control cabinets)

• 3/8: Connection Thread – G3/8B British parallel pipe thread, bottom radial outlet port

• 100: Dial Diameter – Φ100 mm, enabling clear readings for long-distance observation

• 3MPa: Measuring Range – 0～3 MPa (0~30 bar)

2. Basic Brand Information

Brand: TOYO KEIKI KOGYO CO., Ltd. (abbreviated as TOKO)Standard: Compliant with JIS B7505 standard for Bourdon tube pressure gaugesType: General industrial Bourdon tube pressure gauge

3. Core Technical Specifications

1. Accuracy ClassStandard industrial model: ±1.6% FS; Class 0.6 high-precision version with stainless steel Bourdon tube available as an option.

2. Structure & Materials

• Case: Cold-rolled steel with baked paint, dust-proof sealed construction

• Bourdon Tube / Connection Socket: Brass (standard version); SUS316 stainless steel version optional for corrosive media

• Window: Safety protective glass, equipped with explosion relief back cover

3. Operating Conditions

• Applicable Media: Air, water, hydraulic oil and other fluids non-corrosive to copper alloys

• Ambient Temperature: -20～+60℃

• Allowable Transient Overload: 1.25 times full scale (3.75 MPa for short-term operation)

4. Mounting DimensionsThread: External G3/8 threadΦ100 dial, fixed via cutouts on rear flange for cabinet flush mounting

4. Product Features

• Dust-proof sealed case, durable in dusty and humid workshop environments

• Stable pointer damping; the pointer resists shaking under slight pressure pulsation

• Original Japanese dial marking with standard linear MPa scale and clear graduations

• Type B flange mounting fits panels of machine tools, hydraulic power units, air compressors and injection molding machines

5. Application Scenarios

Measuring range: 0～3 MPa (30 bar), G3/8 thread, Φ100 flush panel mounting. Suitable for medium & low-pressure hydraulic, pneumatic and water supply equipment, categorized by industries as follows:

(1) Hydraulic Equipment

• Small injection molding machines & vertical injection molding machinesMonitor low-pressure mold clamping, ejector oil pressure and low-pressure injection circuits. The 3 MPa measuring range perfectly matches low-pressure preloading oil lines.

• Hydraulic power units for machine toolsClamping pressure for grinders, milling machines, punch presses and hydraulic fixtures. Tool clamping pressure is mostly within 1～2.5 MPa.

• Hydraulic lifting platforms & small hydraulic jacking equipmentLow-pressure oil pressure indication and overload early warning for lifting loads.

• Rubber vulcanizers & small hydraulic hot pressesLow-pressure mold closing pressure monitoring for platens.

(2) Pneumatic & Air Compressor Systems

• Small screw air compressors & piston air compressorsLow-pressure supply pressure after secondary pressure regulation (standard factory supply pressure: 0.5～0.8 MPa with sufficient range margin).

• Air receivers & pneumatic control cabinet panelsMain pipeline pressure monitoring for centralized workshop air supply. Flange flush mounting adapts well to cutouts of electric control cabinets.

• Automated pneumatic production lines & cylinder booster circuitsLow-pressure output pressure indication of booster valves.

(3) Water Treatment, Water Supply & Cleaning Equipment

• Water purifiers & RO reverse osmosis equipmentPressure monitoring for low-pressure pretreatment pipelines (raw water and pre-filter pressure generally 1～2.5 MPa).

• Low-pressure inlet side of small high-pressure cleaners & pipeline booster pumpsInlet pressure stabilization monitoring.

• Building secondary water supply & small water supply booster unitsPressure monitoring for domestic water pipelines.

(4) Rubber, Plastic & Packaging Machinery

• Cooling water circuits of film blowers & extrudersWater pressure monitoring for cooling circulation pipelines.

• Automatic packaging machines, labeling machines & pneumatic sealing machinesPanel display of air source pressure for complete equipment.

• Low-pressure air supply circuits of foaming equipment.

(5) General Industrial Supporting Facilities

• Cooling water circuits for boiler auxiliary equipment & small heat exchange stationsLow-pressure pressure monitoring of circulating water.

• Cooling circuits & mold water lines of die-casting machines

• Laboratory test benches & small hydraulic test toolingAccurate observation for low-pressure testing within 0～3 MPa.

• Auxiliary low-pressure oil circuits of construction machineryHydraulic auxiliary circuits for small agricultural machinery and compact construction equipment.

6. Selection Advantages

• Large Φ100 dial ensures legible readings from a distance; standard configuration for workshop equipment panels.

• Rear flange flush mounting enables direct installation on control cabinets / equipment panels for neat appearance.

• G3/8 thread is widely adopted in hydraulic and pneumatic systems with high compatibility for pipeline fittings.

• 0～3 MPa range covers most medium/low-pressure water, gas and oil working conditions; an excessively wide measuring range will lead to poor reading accuracy.

• TOKO pressure gauge suppresses slight pressure pulsation and avoids frequent pointer vibration under vibration generated by oil pumps and air compressors.

Product Name: TOKO Pressure Gauge BT3/8×100×3MPa