Insights

Resources for pressure and temperature instrument buyers.

Find technical blog articles, reserved white paper topics, and brochure-style product entrances for pressure gauges, thermometers, transmitters, diaphragm seals, and application-specific instruments.

46Blog
3White Papers
3Brochures
Blog Articles
Pressure gauge mounted on a hydraulic power unit manifold, dial graduated 0 to 250 bar

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

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

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

Pressure Gauge Factory Acceptance Test Checklist

Pressure gauge factory acceptance test checklist: inspection points, calibration evidence, leak checks, materials and the documents to demand before shipment.

Compressor room with air receiver tank, dryer and filtration pipework

Compressed Air Pressure Gauge Selection Guide (bar & psi)

Pick compressed air pressure gauges from compressor room to point of use: bar/psi range, accuracy class, filter pressure drop, moisture, and an RFQ checklist.

Manogauge factory production environment for industrial pressure gauge manufacturing

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

District Heating Pressure Gauge Selection: Range, Temperature & Siphons

Select a district heating pressure gauge for primary and secondary loops with practical checks for range, hot-water temperature, strainer DP points and siphons.

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

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

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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

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.

Nitrogen blanketing pressure gauge selection for a low-pressure storage tank vapor space

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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

Bimetal Thermometer Thermowell Selection Guide

Bimetal thermometer and thermowell selection for steam, hot water and thermal oil: insertion length, material, wake frequency risk and connection choice.

Biogas plant with digester domes and gas upgrading pipework

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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

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

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

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

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

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

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

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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.

Manogauge factory production environment for industrial pressure gauge manufacturing

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

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

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

Pressure Transmitter vs Pressure Gauge: Selection Guide

Pressure transmitter vs pressure gauge selection: choose local indication or 4-20 mA control for pumps, hydraulics and process lines. Compare accuracy, cost and maintenance.

Hydrogen electrolyser plant with stacks and stainless steel gas pipework

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

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

Data Center Liquid Cooling Pressure Monitoring: CDU & Rack DP

Data center liquid cooling pressure monitoring: CDU supply and return points, rack manifold gauges, filter DP trending and coolant material compatibility.

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

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

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

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

Pressure Gauge Failure Modes: 7 Causes & Fixes

Troubleshoot 7 pressure gauge failure modes: stuck pointer, zero drift, flutter, fogging, slow response and overpressure. Find causes and repair steps.

Process plant pipework where differential pressure is measured across equipment

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

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

Industrial Pressure Gauge Selection: Range, Material & Fit

Select an industrial pressure gauge by checking range and span, process medium, wetted materials, accuracy, dial size, connection and case protection.

Manogauge factory production environment for industrial pressure gauge manufacturing

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

Dry vs Liquid-Filled Pressure Gauges: Vibration Guide

Dry vs liquid-filled pressure gauges: choose the right option for vibration, pulsation, temperature and maintenance, with glycerin and silicone-oil checks.

Manogauge factory production environment for industrial pressure gauge manufacturing

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

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.

White Papers

White Papers

Reserved topics for deeper selection documents. Downloadable PDFs will only be enabled after real files and specifications are confirmed.

White paper topic

Pressure Gauge Selection White Paper

A planned PDF covering range selection, accuracy class, wetted materials, connection threads, vibration, pulsation, and documentation checks.

Range / Accuracy / Materials
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White paper topic

Diaphragm Seal Gauge Application Guide

Reserved for corrosive, viscous, sanitary, and high-clogging media selection notes. Final limits require confirmed factory data.

Corrosion / Sanitary / Viscous Media
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White paper topic

Temperature Instrument Procurement Guide

A future buyer document for bimetal thermometers, thermo-manometers, temperature ranges, stems, and mounting conditions.

Thermometers / Stems / Mounting
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