Instonnic

✅ Pressure & Vacuum Comparator with In-Built Digital Master Gauge – Technical Specification 1. General Description

A pressure and vacuum comparator is a manual or pneumatic/hydraulic test pump combined with an in-built high-accuracy digital master gauge. It is designed for generating and controlling pressure or vacuum to compare with another device under test (DUT).

2. Pressure Generation

• Type: Manual hand pump or screw pump mechanism

• Pressure Range:

  • Vacuum: 0 to -0.95 bar (approx. -28 inHg)

  • Pressure: 0 to 40 bar / 0 to 100 bar / 0 to 700 bar (model dependent)

• Medium:

  • Pneumatic: Dry air or nitrogen (up to ~40 bar)

  • Hydraulic: Oil or water-based fluid (for >40 bar)

3. Digital Master Gauge (In-Built)

• Type: High-accuracy digital pressure/vacuum gauge

• Measurement Range:

  • Vacuum to full-scale pressure (e.g., -1 to 40 bar, 0 to 700 bar)

• Accuracy:

  • ±0.05% FS, ±0.02% FS, or ±0.01% FS depending on model

  • NIST or ISO 17025 calibration certificate available

• Resolution:

  • 4 to 6 digits depending on range

• Units Supported:

  • bar, psi, kPa, MPa, mbar, Pa, kg/cm², inHg, mmHg, atm (selectable)

• Display:

  • Large backlit LCD or OLED

  • Real-time pressure reading

  • Min/Max/Peak Hold

  • Battery status indicater

4. Connections

• Test Ports:

  • 2 to 3 test ports (1 for master gauge, 1–2 for DUTs)

  • Typically 1/4” BSP, NPT, or metric adapters provided

  • Quick-connect or standard threaded ports

• Material (Wetted Parts):

  • Stainless Steel 316 or brass (depending on pressure medium)

5. Control Features

• Fine Adjustment Valve: For precise pressure control

• Vent/Release Valve: Quick depressurization

• Isolation Valve: For isolating test devices

6. Electrical & Power

• Power Source (Gauge):

  • Battery-operated (e.g., 3.6V lithium, AA/AAA)

  • Rechargeable battery (optional)

  • Battery life: Up to 3,000–5,000 hours (backlight off)

• Optional External Power: USB or DC adapter

7. Physical Characteristics

• Housing Material:

  • Aluminum, stainless steel, or anodized alloy body

• Weight:

  • 3–8 kg depending on model and range

• Enclosure Rating:

  • IP54 to IP65 (field use)

• Carrying Case:

  • Rugged, foam-padded transport case (optional)

8. Environmental Conditions

• Operating Temperature:

  • -10°C to +50°C (gauge and pump)

• Storage Temperature:

  • -20°C to +70°C

  • 9. Certifications & Compliance

• CE certified

• RoHS compliant

• ISO 9001 manufacturing standard

• Optional: ISO 17025 or NIST traceable calibration certificate

Full View Sight  Indicators are an in-line type that is used to provide 360 degree viewing of material flow through a line.  They are unique because the characteristics of the liquid can be viewed.  A typical sight flow allows observation of liquids through a glass pane while the full-view sight flow allows observation of liquids in transit through a more dynamic, three dimensional pipeline.

Specifications:

• protective tubing of acrylic plastic,
• lexan or stainless steel depending on the temperature requirements
• Lens: Borosilicate Tubing— Heavy Wall (Standard)

We offer Tank Mounted View Glass which is made up of high quality raw material. We offer Tank Mounted View Glass on industry leading price.The Tank Mounted View Glass are available with various options for compatibility in various applications.

Specifications:

• Round Square & Rectangular Shape
• Mounted view glasses

Double Window Sight Flow Indicators Contains Two Toughened Glasses Mounted opposite to each other. This enables observation of the Flow. Due to Toughened Glasses Sight Glass Can Withstand High Pressure ( Maxi. 25 Kg / Cm 2 ) High Temp ( Maxi. 200° ) & Full Vacuum Service. We are manufacturing these Sight Glasses in Flanged or Screwed or Socket Weld or Butt Weld End Connection in M. S., CS ( A - 105 ), S.S.304, S.S.316, or MS With Rubber or PP or PVDF or Teflon lined or any other alloy. We are giving from 15 NB to 300 mm NB.

We are also manufacturing Double Window With Jacket for Special application.

Generally Our Double Window Sight having Drip Tube Type Design But for any Transparent liquid we can also provides Rotating blade type & for any Gas application we can also provides Flapper type Double Window Sight Glasses.

Specifications:

• Two Toughened Glasses
• Used to check the inline flow of various liquids