圧力計スナッバ選定ガイド | Manogauge

2026-06-20
ポンプ吐出配管の圧力計スナッバ
模式図:スナッバを取出口近くに設置します。

圧力計スナッバは脈動源と圧力計の間に入れる小型の絞りまたは減衰部品です。

圧力計スナッバの役割

A pressure gauge snubber is an accessory installed between a pulsating pressure source and the gauge. It improves readability and reduces repeated stress on the measuring element, but it does not replace process surge protection or a correctly rated gauge.

圧力計仕様を確認 ->143以上の工業用ゲージを見る

脈動を減衰する仕組み

圧力計スナッバ減衰断面
模式図:多孔絞りが脈動を低減します。

The snubber adds resistance so rapid pressure changes are slowed before they reach the Bourdon tube. More damping gives a calmer pointer, but too much damping can hide a real pressure rise.

脈動保護が必要な場所

Typical applications include pump discharge lines, compressors, hydraulic presses, dosing pumps and test stands. Dirty, viscous or crystallising media may require a diaphragm seal or transmitter instead of a narrow restriction.

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充液計器、固定スナッバ、調整式絞り

充液計器、固定スナッバ、調整式絞りの比較
比較図:必要最小限の減衰を選びます。

Liquid-filled gauges damp mechanical vibration inside the case. Fixed snubbers reduce process pulses. Adjustable restrictors are useful during commissioning but the final setting must be documented.

MethodUseLimit
Liquid-filled gaugeVibrationNot spike isolation
Fixed snubberClean pulsating mediaCan clog
Adjustable restrictorSite tuningSetting control needed

仕様確認チェックリスト

Confirm range, pulse source, medium, temperature, wetted material, thread, valve arrangement and response time. High-pressure, corrosive, hygienic and hazardous-area service must be checked by the project engineer.

購入前の現場確認

Use a pressure gauge snubber when pulses damage the instrument or prevent a readable average pressure. If pulsation threatens the equipment itself, correct the process cause first.

Key takeaways

Часто задаваемые вопросы

When should I use a pressure gauge snubber?

Use a pressure gauge snubber when pump, compressor or hydraulic pulsation makes the pointer unreadable or causes repeated gauge failures. Do not use it as a substitute for process surge protection when pulses threaten the equipment itself.

Is a liquid-filled pressure gauge the same as a snubber?

No. Liquid fill dampens movement vibration inside the gauge case. A snubber restricts the process pressure path before pressure reaches the Bourdon tube. Severe process pulses may need both.

Can a snubber clog?

Yes. Porous and small-orifice snubbers can clog in dirty water, slurry, crystallising chemicals or viscous media. In those services, consider a diaphragm seal, flush connection or protected pressure transmitter.

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