China Rectangular Capsule Pressure Gauge for sale
China Rectangular Capsule Pressure Gauge for sale

Rectangular Capsule Pressure Gauge

What It Is The YEJ series is a mechanical pressure gauge designed for low‑pressure and negative‑pressure (vacuum) measurement of neutral, non‑corrosive gases. It uses a sensitive capsule element – not a common Bourdon tube – so it can measure down to just a few hundred pascals. The rectangular case fits neatly into control cabinets or tight panels. Two Models – Pick What You Need YEJ‑101 (Indicator only) Pure mechanical indication – no electricity required Easy to read,

Payment Terms L/C,D/A,D/P,T/T,Western Union,MoneyGram
Brand Name YUNYI
Place of Origin CHINA
Price negotiable
Delivery Time 5-8 work days
Minimum Order Quantity 1 Piece
Product Description

What It Is

The YEJ series is a mechanical pressure gauge designed for low‑pressure and negative‑pressure (vacuum) measurement of neutral, non‑corrosive gases. It uses a sensitive capsule element – not a common Bourdon tube – so it can measure down to just a few hundred pascals.

The rectangular case fits neatly into control cabinets or tight panels.


Two Models – Pick What You Need

YEJ‑101 (Indicator only)

  • Pure mechanical indication – no electricity required

  • Easy to read, always works even during a power outage

  • Best for on‑site monitoring of boiler air supply, flue gas ducts, or ventilation systems

YEJ‑121 (With electric contacts)

  • Adds preset upper and lower limit contacts

  • Can directly trigger alarms, relays, or PLC inputs

  • Great for automatic pressure control or safety interlocking


Key Features (No Jargon)

  • Sensitive to very low pressure – Works perfectly where ordinary gauges show no movement

  • Low air intake – Does not disturb the system being measured

  • Rectangular housing – Space‑saving, stable, and vibration‑resistant

  • YEJ‑121 contact capacity – 3A 220V AC, enough for most alarms and small relays

  • Wide pressure range options – From –250 Pa up to 60,000 Pa (positive, vacuum, or compound)


Typical Applications

  • Boiler combustion air monitoring

  • Flue gas duct pressure (draft measurement)

  • Cleanroom differential pressure

  • HVAC air filters and duct static pressure

  • Dust collection systems

  • Laboratory test benches for low‑pressure gases


Simple Specs (No Table)

  • Accuracy: 2.5% of full scale

  • Pressure connection: φ8 tube (fits φ6 inner diameter hose)

  • Operating temperature: –20°C to +60°C

  • Humidity: ≤85% RH

  • Weight: YEJ‑101 ~2 kg ; YEJ‑121 ~2.5 kg

  • Power (YEJ‑121 only): AC 220V, <5W


Why Choose YEJ?

  • No external power for YEJ‑101 – truly independent mechanical gauge

  • Easy to mount – rectangular shape fits flat panels

  • Reliable in vibration – less pointer drift than round gauges with the same mechanism

  • Contact version saves cost – no need for a separate pressure switch

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