What is a Combination Gauge?
A combination pressure–temperature gauge is a single instrument that shows pressure (bar/psi) and temperature (°C/°F) on one dial. It uses two independent sensing elements—typically a Bourdon tube for pressure and a bimetal or gas-actuated system for temperature—each driving its own pointer and scale. One device, two readings, zero guesswork.
Typical applications: boilers and hot-water systems, HVAC/refrigeration skids, compressors and pumps, heat exchangers, hydraulic test benches, and general plant utilities.
Why Use a Combination Gauge?
-
Two readings at a glance: Faster commissioning, rounds, and fault-finding.
-
Fewer leak paths: One process connection instead of tees and a second gauge.
-
Space-saving panels: Ideal for compact OEM equipment and retrofits.
-
Lower installed cost: Less piping, fewer fittings, shorter installation time.
-
Better diagnostics: Seeing temperature and pressure together helps identify flashing, cavitation, sub-cooling, or air entrainment.
-
Industrial durability: Available in stainless cases, glycerine filling, and vibration protection.
What We Need to Place Your Combination Pressure–Temperature Gauge
Send us the checklist below and we’ll recommend a fit-for-purpose unit immediately:
- Process medium: water, steam, air, oil, refrigerant, chemicals (for material compatibility).
- Pressure range: normal and maximum; units (bar/psi). Note pulsation or overpressure.
- Temperature range: normal and maximum; units (°C/°F).
- Dial size: 63, 100, or 160 mm (readability vs space).
- Connection: ¼” or ½”, BSP/NPT; bottom or back entry.
- Mounting style: direct mount, panel mount (U-clamp), surface mount, or front flange.
- Wetted parts: Brass/Bronze or SS316 (recommended for corrosive media).
- Case & window: SS304/316 case; glass or polycarbonate window.
- Liquid-filled or dry: glycerine-filled for vibration; dry for stable, clean services.
- Accuracy class: e.g., ±1.6% (pressure), ±2% (temperature) or as specified.
- Service conditions: ambient temperature, vibration, wash-downs, IP rating needs.
- Options: snubber/restrictor, isolating needle valve, drag/set pointer, thermowell (for high temperatures/steam), siphon for steam, or remote mount/capillary.
- Quantity & delivery location: to confirm stock and lead time.
Quick Installation Tips
-
For steam, use a siphon and/or thermowell to protect the sensing elements.
-
Mount at eye level, away from vibration and radiant heat where possible.
-
Use thread sealant sparingly—do not block the gauge orifice.
-
Spot-check during maintenance; replace if damaged, drifting, or unreadable.
Why Blanes?
Blanes Pressure Solutions supplies robust, industry-ready combination gauges with expert sizing support and fast turnaround across South Africa.
Read more;
We also offer SANAS traceable calibrations complete with a certificate, valid for 1 year on our premises.
Blanes Pressure Solutions supplies a comprehensive range of pressure measurement instruments.
Blanes Pressure Solutions was founded in 2002 to take over the pressure business of Blanes Instruments CC, and can trace its pedigree back to 1893, when Robert Blane left Scotland to make his fortune on the Witwatersrand.
For more information on placing orders, after care and maintenance services you can contact our Sales Manager Ronel Olivier on ronel@pressuresolutions.co.za or 011 422 1749.
