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SJ Gauge pressure gauge with adjustable warning alarm contact
SJ Gauge three-inch pressure gauge with warning alarm contact
  1. SJ Gauge pressure gauge with adjustable warning alarm contact
  2. SJ Gauge three-inch pressure gauge with warning alarm contact

Electric Contact Gauge, 3 inches

Model: PRE3
  • Suitable for observation and automatic control
  • Adjustable magnetic strength to avoid frequent, accidental collision of contacts due to vibration
  • A variety of contact types to choose from
  • Responsive after-sales service / Customizable
  • High quality / One-year warranty
  • Product images are for reference only. Final specifications are based on the confirmed order.
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Description

The PRE3 is a 3-inch electric contact pressure gauge designed for visual monitoring and automatic control. It features an adjustable magnetic mechanism that prevents accidental contact activation due to vibration. The gauge offers customizable pressure ranges with ±3.0% F.S. accuracy, a 316L stainless-steel wetted system, and a PC window. Equipped with EC1 snap-action contacts (70% silver & 30% nickel, gold-plated), it supports multiple switching functions. Available in bottom mount, back mount, and back flange configurations, the PRE3 is suitable for general industrial use, pump control, fan operation, and pipeline pressure monitoring.

Product Images

PRE3 | Electric Contact Gauge, 3 inches
PRE3 | Electric Contact Gauge, 3 inches

Downloads

Englsih

SJ-Gauge-PRE3-pressure-gauge-datasheet-en

Traditional Chinese

SJ-Gauge-PRE3-pressure-gauge-datasheet-zh-tw.pdf

Specifications

Connection locationBottom mount, back mount, back mount with flange
Electrical connectionsCable outlet
Nominal size3"
Accuracy±3.0% F.S.
Process connection
  • 316L SS
  • 1/4, 3/8, 1/2
  • PT, G, NPT
WindowPC
MovementCopper alloy
Bourdon tube316 SS
Pressure limitation
  • Steady: full scale value
  • Fluctuating: 0.9 x full scale value
Ambient temperature-20℃ … 70℃
Medium temperature-20℃ … 150℃
ContactEC1 snap-action contacts, 70% silver & 30% nickel, gold-plated
Electrical contact specification
  • Rated voltage: 250 V (Max.)
  • Contact capacity: 30 W ~ 50 VA (Max.)
  • Starting current: 1.0 A (Max.)
  • Persistent current: 0.6 A (Max.)
  • Switching voltage: 24 V (Min.)

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