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Resources for pressure and temperature instrument buyers.

Find technical blog articles, downloadable PDF guides, and brochure-style product entrances for pressure gauges, thermometers, transmitters, diaphragm seals, and application-specific instruments.

46Blog

11PDF Guides

3Brochures

Featured resource

HVAC technician connecting a manifold gauge set with compound dials to an air conditioning condensing unit

Technical article2026-08-25

Vacuum Pressure Gauge Selection: Compound Ranges and Limits

Vacuum pressure gauge selection: gauge, vacuum, compound and absolute references, the right sensing element per vacuum level, and where a dial stops working.

Blog Articles

Pressure gauge mounted on a hydraulic power unit manifold, dial graduated 0 to 250 bar

Technical article2026-08-25

Pressure Gauge Accuracy Class Selection: 4 Key Variables

Pressure gauge accuracy class selection: what EN 837-1 classes permit, how span and working point change the real error, and which class each duty needs.

Engineer verifying pressure gauges on a comparator bench in the Manogauge calibration laboratory

Technical article2026-08-18

How to Calculate Pressure Gauge Range: 75% Rule and Examples

Calculate pressure gauge range step by step: divide maximum pressure by 0.75 or 0.65, round up to a standard range, then check the working point and accuracy.

Schematic of a chiller refrigerant loop showing high-side and low-side pressure gauge points at the compressor, condenser, expansion valve and evaporator

Technical article2026-07-28

Chiller Refrigerant Pressure Gauge Selection Guide

Select high- and low-side chiller refrigerant pressure gauges for R-134a, R-410A, R-407C and CO2 by range, materials and connections.

Pressure gauge assembly and inspection hall at the Manogauge factory

Technical article2026-07-23

Pressure Gauge Factory Acceptance Test: 5 Failure Causes

Pressure gauge FAT checklist: catch 5 common acceptance failures in range, accuracy, threads, leakage and calibration documents before shipment.

Compressor room with air receiver tank, dryer and filtration pipework

Technical article2026-07-22

Compressed Air Pressure Gauge: bar/psi Selection Guide

Choose compressed-air gauges in bar or psi for compressors, receivers, filters and point-of-use regulators; compare range, accuracy and moisture risks.

Manogauge factory production environment for industrial pressure gauge manufacturing

Technical article2026-07-20

Pulp & Paper Pressure Gauge Selection: Materials, Plugging & Diaphragm Seals

How to select a pulp and paper pressure gauge for stock, white water, steam and coating lines—covering fibre plugging, diaphragm seals, range and wetted materials.

Technical article2026-07-19

District Heating Pressure Gauge: Range & Temperature

Select district-heating gauges for primary and secondary loops by pressure range, hot-water temperature, strainer DP points and siphon needs.

Fire pump room with red fire pumps, riser piping and alarm valve assembly

Technical article2026-07-18

Fire Sprinkler Pressure Gauge: UL 393 & NFPA 25

Choose a fire sprinkler pressure gauge for wet, dry and preaction systems: check UL 393 or FM approval, range, NFPA 25 inspection and replacement rules.

High-pressure gauges on a CO2 transcritical refrigeration rack with labelled high-pressure and suction lines

Technical article2026-07-17

CO2 Transcritical Pressure Gauge Selection

CO2 transcritical refrigeration pressure gauge selection for R744 racks: high-side pressure, flash tank and suction points, materials and safety cases.

Technical article2026-07-13

Solid-Front Pressure Gauge Selection: Gas, Steam & Blow-Out Safety

Choose a solid-front pressure gauge for high-pressure gas and steam. Review baffle and blow-out-back design, ASME B40.100, EN 837-1 S3 and mounting risks.

Technical article2026-07-12

Chilled Water Differential Pressure Monitoring: HVAC Guide

Chilled water DP monitoring for HVAC plants: where to place gauges and DP transmitters, how to size the range, and what the readings cannot prove.

Liquid-filled pressure gauge mounted on a pigtail siphon on an insulated steam line

Technical article2026-07-11

Steam Gauge Siphon: Pigtail vs U-Type and How to Install

Why a steam pressure gauge needs a siphon: how the condensate barrier protects the Bourdon tube, pigtail vs coil vs U-type, filling and range checks.

Technical article2026-07-10

Nitrogen Blanketing Pressure Gauge Selection

Nitrogen blanketing pressure gauge selection for low-pressure storage tanks: range, capsule gauges, regulators, vents, oxygen-deficiency risk and RFQ checks.

Technical article2026-07-09

Pressure Relief Valve Gauge Selection: Range and Placement

Size a relief valve pressure gauge around operating and set pressure, choose where the gauge belongs, and check backpressure, rupture discs and vibration.

Technical article2026-07-08

Chemical Dosing Skid Pressure Gauge: Selection Checklist

Dosing skid gauge selection: set range from pump shutoff and relief pressure, pick wetted materials and diaphragm seals, handle pulsation and clogging risk.

Technical article2026-07-06

Oxygen Pressure Gauge: Oil-Free Selection & Safety

Select an oxygen pressure gauge for clean service: verify oil-free cleaning, compatible wetted materials, range, packaging and installation safety.

Bimetal dial thermometer inserted in a thermowell on a flanged stainless steel pipe

Technical article2026-07-05

Bimetal Thermometer & Thermowell: 316L, -40–400°C

Select a bimetal thermometer and thermowell for steam, hot water or thermal oil: compare 316L materials, insertion length, temperature and vibration.

Biogas plant with digester domes and gas upgrading pipework

Technical article2026-07-04

Biogas Pressure Gauge: H2S, Condensate & Range Guide

How to choose a biogas pressure gauge for digesters and biomethane skids: check H2S corrosion, condensate, low-pressure range, materials and installation.

Technical article2026-07-03

Filter Differential Pressure Gauge: Range, Alarm, Changeout

Choose a filter differential pressure gauge from clean DP, changeout DP and flow: DP span, alarm setting, port layout, wetted materials and cleaning limits.

Industrial pump and process pipework where overpressure protection is required

Technical article2026-07-02

Pressure Gauge Overpressure Protection Guide

Pressure gauge overpressure protection guide for pumps, water hammer, pulsation, snubbers, pressure limiters, safety cases and RFQ checks.

Real dual-scale pressure gauge dial with bar and psi markings for EN 837-1 procurement review

Technical article2026-07-01

EN 837-1 Pressure Gauge Standard: Accuracy Class and RFQ Guide

EN 837-1 explained for buyers: accuracy class, S1/S2/S3 safety pattern, range rules and ASME B40.100 comparison — plus the evidence to request before you place the order.

Cooling tower with circulating water pumps and filtration pipework

Technical article2026-06-30

Cooling Tower Pressure Gauge Monitoring Guide

Cooling tower pressure gauge monitoring for condenser water loops: gauge points, strainer DP, side-stream filters, materials and range selection.

Sanitary pressure gauge with clamp diaphragm seal on a clean steam SIP line in a pharmaceutical plant

Technical article2026-06-28

Clean Steam Pressure Gauge for Pharma SIP

Clean steam pressure gauge selection for pharmaceutical SIP: wetted materials, sanitary connections, calibration, monitoring points and RFQ checklist.

Supplier audit desk with inspection records and sample pressure gauges

Technical article2026-06-27

Pressure Gauge Supplier Audit Checklist: 10 Evidence Checks

Pressure gauge supplier audit checklist with 10 evidence checks: ISO 9001 scope, EN 837, ASME B40.100, calibration traceability, sample testing and material certificates.

Hydraulic power unit circuit with pressure measuring points

Technical article2026-06-25

Hydraulic Pressure Gauge Selection Guide

Hydraulic pressure gauge selection for presses, power units and manifolds: 0-600 bar ranges, glycerine fill vs snubbers, SAE/BSP/NPT ports and fluid checks.

Centrifugal pump pressure gauge selection with suction and discharge gauges on a pump skid

Technical article2026-06-24

Centrifugal Pump Pressure Gauge: Suction & Discharge

Select centrifugal pump pressure gauges for suction and discharge: size the range from the pump curve, then check vibration, cavitation, materials and isolation.

Technical article2026-06-21

Industrial Heat Pump Pressure Monitoring: Gauge Selection

Industrial heat pump pressure monitoring for retrofits: gauge and transmitter selection, range, materials, installation points and commissioning checks.

Technical article2026-06-20

Pressure Gauge Snubber: Stop Pump Pulsation Damage

Choose a pressure gauge snubber for pump, compressor and hydraulic pulsation. Compare damping, response time, blockage risk and compatibility.

Stainless steel pressure gauge on an ammonia refrigeration compressor valve station in a machinery room

Technical article2026-06-16

Ammonia Refrigeration Pressure Gauge: R717 Materials and Safety

Ammonia refrigeration pressure gauge guide for R717 cold storage: suction, discharge, oil, defrost ranges, material compatibility and safety checks.

Manogauge pressure gauge calibration laboratory and factory environment

Technical article2026-06-16

Pressure Gauge Dial Size Chart: 40, 63, 100 or 150 mm?

Choose a pressure gauge dial size by reading distance, panel space, vibration and accuracy class. Compare 40, 63, 100 and 150 mm.

Diagram comparing a local mechanical pressure gauge with a 4-20 mA transmitter loop

Technical article2026-06-15

Pressure Transmitter vs Pressure Gauge: 7 Selection Questions

Pressure transmitter vs pressure gauge: answer 7 selection questions for local indication, 4–20 mA, PLC/SCADA alarms, accuracy, range and maintenance.

Hydrogen electrolyser plant with stacks and stainless steel gas pipework

Technical article2026-06-10

PEM vs Alkaline Electrolyzer Pressure Monitoring Guide

Compare PEM and alkaline electrolyzer pressure monitoring: gauge and transmitter locations, hydrogen and oxygen compatibility, isolation, alarms and limits.

Red and blue refrigerant manifold gauge set with service hoses connected to an R454B heat pump unit

Technical article2026-06-06

A2L R-454B Refrigerant Pressure Gauge Selection

A2L R-454B refrigerant pressure gauge selection for HVAC service: manifold gauge use, PT chart checks, service ports, gauge range and safe workflow.

Data centre liquid cooling loop with coolant distribution pipework beside server racks

Technical article2026-06-02

CDU Pressure Monitoring for Data Center Liquid Cooling

Specify CDU pressure gauges and transmitters for liquid cooling: monitor supply/return pressure, rack DP and filter loading for leak warnings.

Wall-mounted differential pressure gauge with two sensing ports monitoring a GMP cleanroom

Technical article2026-06-02

Cleanroom Differential Pressure: 10-15 Pa Cascade & Alarms

Cleanroom differential pressure monitoring: the 10-15 Pa cascade, airlock and HEPA points, low-range DP gauge choice, alarm limits and calibration records.

Industrial pressure gauge installation on a process pipeline with a siphon tube

Technical article2026-05-29

How to Install a Pressure Gauge: Position, Siphon, Snubber

Step-by-step pressure gauge installation: mounting position, when a siphon or snubber is needed, NPT/BSP sealing torque and EN 837-2 commissioning checks.

Sanitary pressure gauge with Tri-clamp diaphragm seal on a stainless steel process line in a food plant

Technical article2026-05-29

Sanitary Pressure Gauge for Food & Pharma

Sanitary pressure gauge selection for CIP/SIP dairy, beverage and biopharma lines: 3-A and EHEDG scope, FDA wetted materials and tri-clamp connections.

Maintenance technician inspecting instrumentation on process pipework

Technical article2026-05-29

Pressure Gauge Failure Troubleshooting: 7 Symptoms, Causes and Fixes

Troubleshoot 7 pressure gauge failure symptoms: broken Bourdon tubes, stuck pointers, zero drift, pulsation, fogging and corrosion—with practical checks and fixes.

Process plant pipework where differential pressure is measured across equipment

Technical article2026-05-29

Differential Pressure Gauge Selection: Range & Filters

Select a differential pressure gauge for filters and process lines: compare DP range, static pressure, overpressure protection, accuracy and installation.

Export compliance documents and declaration of conformity for pressure gauges

Technical article2026-05-29

Pressure Gauge Export Certifications Guide

Pressure gauge export certifications explained: CE/PED 2014/68/EU, ASME B40.100, GOST R, JIS B7505, 3-A and ATEX/IECEx scope and required documents.

Industrial standard mechanical pressure gauge for pipeline and equipment monitoring

Technical article2026-05-27

Industrial Pressure Gauge Selection by Industry & Service

Select an industrial pressure gauge for pumps, compressors, hydraulics and process lines by range, medium, wetted material, accuracy and connection.

Technical article2026-05-11

Bourdon Tube vs Diaphragm vs Capsule Gauges

Compare Bourdon tube, diaphragm and capsule pressure gauges by range, media, response and contamination risk before specifying a gauge.

Pressure gauge test and calibration benches in a manufacturing workshop

Technical article2026-05-08

Dry vs Liquid-Filled Pressure Gauges: Which Is Right for Your Application?

Dry vs liquid-filled pressure gauges: compare vibration, pulsation, temperature, readability and maintenance in 7 practical checks before you specify.

Technical article2026-05-08

316L Stainless vs Brass Pressure Gauges: Corrosion Guide

316L vs brass pressure gauge wetted parts compared for corrosion risk in water, steam, ammonia, seawater, chlorides, CIP/SIP cleaning and diaphragm seals.

Pressure gauge bottom connection showing NPT/BSP thread for pipeline installation

Technical article2026-05-08

Pressure Gauge Thread Size: G1/2 and 1/2 NPT Chart | Manogauge

Pressure gauge thread size guide: compare G1/2, 1/2 NPT, BSPT, BSPP and metric threads, including sealing, fit and RFQ checks.

Product and capability entrances for buyers comparing industrial gauges, thermometers, diaphragm seals, and OEM/ODM support.

Brochure

Pressure Gauge Catalog

Browse stainless steel, liquid-filled, diaphragm, digital, differential, vacuum, and application-specific pressure gauges.

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Brochure

Factory & OEM/ODM Capability

Manufacturing, assembly, inspection, custom dial, thread, and batch supply support for industrial instrument buyers.

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Brochure

Industry Application Pages

Match gauges and thermometers to petrochemical, water treatment, HVAC, food, medical, machinery, and marine scenarios.

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Prioritize selection comparisons, material compatibility, connections, accuracy, diaphragm, sanitary and thermometer topics. Each article should carry product links, FAQ, tables and RFQ CTA.

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