Pressure Gauge Parts: 12 Components and What They Do
A field guide to the 12 parts inside a mechanical pressure gauge: what each component does, what materials they are made of, and which parts wear out first.
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Electric Oil Pressure Gauge: Mechanical vs Sender-Driven vs Digital LCD
Industrial selection guide for electric oil pressure gauges. Compares mechanical Bourdon, sender-driven 240-33 ohm dash gauges, and digital LCD instruments like the HM40 across spec, wiring, and accuracy class.
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How to Read a Pressure Gauge: A Field Engineer’s Guide
Step-by-step guide to reading industrial pressure gauges: units, scale math, dual-scale traps, accuracy class, and when to upgrade to digital.
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Pressure Transmitter Types: Reference, Sensing, Output and Certification
Pressure transmitter types is four axes: reference, sensing, output, certification. 12 worked examples and a 6-step selection workflow.
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NPT vs BSP/G Thread: Pressure Connection Selection Guide
NPT (60° tapered, ASME B1.20.1) and G/BSPP (55° parallel, ISO 228-1) are not interchangeable. Standards reference, size equivalence, and 3-step thread ID.
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Pressure Switch Symbol Guide: Electrical Schematics, P&ID & Pneumatic Standards
Decode the pressure switch symbol on any drawing — NEMA / IEC electrical schematics, ISA-5.1 P&ID (PSH, PSL, PDS), and ISO 1219 pneumatic blocks.
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How Differential Pressure Flow Measurement Works
DP flow measurement uses Bernoulli physics: a primary element drops pressure, a DP transmitter reads it, math gives flow. Pick and install correctly.
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How to Read a Vacuum Gauge: Types, Units, and Traps
A vacuum gauge can show three numbers for the same pressure, depending on its reference. Read it correctly, pick the right sensor, avoid the sealed-gauge trap.
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Valve Manifold for DP Transmitter: 2/3/5-Valve Decision
Spec the right valve manifold for your DP transmitter. 2/3/5-valve comparison, decision tree, JJG calibration tie-in, and HMK by-model picks.
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DP Transmitter Calibration: 5-Point Procedure & Field Traps
Calibrate a differential pressure transmitter end to end. 5-point Up & Down procedure, HART vs analog, JJG 882-2019 interval, and 5 field traps to avoid.
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Low Pressure Transducer Guide: HVAC, Cleanroom & OEM
Spec the right low pressure transducer for HVAC, cleanroom, filter monitoring or OEM use. Ranges 100 Pa-10 kPa, accuracy, mounting, and 6 HMK matches.
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Intrinsically Safe Pressure Transmitter: Ex i Selection & Spec Guide
Compare Ex i and Ex d pressure transmitters, decode ATEX, IECEx, and GB 3836 certificates, and pick the right intrinsic-safety spec for Zone 0/1/2 service.
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Pressure Switch or Pressure Transmitter? A Decision Guide for Plant Engineers
Pressure switch vs transmitter: a five-criterion framework (control, data, SIL, integration, lifecycle) plus HM41 hybrid specs and refinery failure patterns.
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Piezoresistive vs Capacitive Pressure Sensors: Which Fits Your Application?
Compare piezoresistive and capacitive pressure sensors head-to-head: physics, accuracy, temperature drift, media compatibility, and a 4-branch decision framework to pick the right cell.
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Flush Mount Pressure Transducer: Selection Guide for Sanitary, Sticky & High-Temp Service
When a flush diaphragm beats a threaded port, how to pick the diaphragm material, and which HMK model (HM70, HM28 Sapphire, HM60 Ex) fits your pressure, temperature and sanitary class.
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Pressure Transmitter Working Principle: 4 Types (2026)
How a pressure transmitter works — the 6-stage signal chain and the 4 sensing technologies (piezoresistive, ceramic, sapphire, MEMS) compared by accuracy, drift, temperature, and cost.
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DP Level Measurement: Principle, Setup & How to Pick (2026)
Differential pressure level measurement explained: hydrostatic principle, four install configs (open tank, closed tank dry/wet leg, bubbler), LRV/URV calculation, interface measurement, and how DP compares to radar and guided-wave for refinery, tank farm, and separator service.
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How a Differential Pressure Transmitter Works (2026 Guide)
Learn how a differential pressure transmitter works — from ΔP sensing and three sensor technologies (capacitive, diffused silicon, resonant silicon) to static pressure effects and 3-valve manifold startup.
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HART vs 4-20mA: HART 7 Guide for Pressure Transmitters
HART isn’t a replacement for 4-20mA — it’s a digital layer on top of it. See when the HART 7 upgrade pays back, and when pure 4-20mA is still enough.
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4-20mA Pressure Transmitter Wiring: 2-Wire, 3-Wire & 4-Wire Guide
You’ve got a new 4-20mA pressure transmitter in hand and you need to wire it correctly the first time — without frying the board, starving the loop of voltage, or spending three hours debugging why the PLC reads zero. Once the loop is wired, the next step is confirming it reads true — see the…
