Liquid baths for temperature probe calibration

January 2003 Maintenance, Test & Measurement, Calibration

The usual problems associated with stirred liquid baths are the liquids themselves. No single liquid will work reliably from negative temperatures to 250°C. A user will probably choose an alcohol, methanol or acetone for negative temperatures, water for 0° to 95°C and a silicone oil for up to 250°C.

Isothermal Technology has engineered two new and unique portable stirred liquid baths with interchangeable containers, one for each liquid, thus preventing cross contamination between liquids. Covering the temperature range from -45 to 140°C and 30 to 250°C, the new baths feature a calibration vessel of 65 mm diameter by 160 mm deep, into which the new interchangeable containers snugly fit, offering complete flexibility when calibrating sensors over a wide temperature range. Stirring is by magnetic coupling giving another benefit, that the complete volume excepting the bottom 10 mm is available for calibrating sensors.

For calibrating liquid-in-glass thermometers a container is available together with accessories that support the thermometers at a desired depth. Other features of the two new baths include accessories to enable the unit to be used for absolute or comparison calibration, surface sensors, optical pyrometers, resistance thermometers and thermocouples. There are two options for each model, the Basic and the Site. The Site is provided with a semi-standard probe and the option of a UKAS calibration certificate making it compliant with EN 17025 and other standards.

Further reading:

Alternative fuels for cutting, brazing, soldering and heating
Maintenance, Test & Measurement, Calibration
Bolt and Engineering Distributors, as an authorised distributor for the Harris Products Group, is helping South African industries transition from acetylene to safer, more cost-effective alternative fuels for cutting, brazing, soldering and heating applications.

Read more...

---

Rethinking corrosion protection in process plants
Omniflex Remote Monitoring Specialists Maintenance, Test & Measurement, Calibration
Remote monitoring is changing how cathodic and anodic protection systems are managed in process plants, giving operators continuous visibility of corrosion protection performance and enabling more proactive maintenance decisions.

Read more...

---

Installation safety tester
Vepac Electronics Maintenance, Test & Measurement, Calibration
A combination measuring device for testing electrical installations, offering safety tests including RCD, voltage, loop, low-resistance, earth resistance and insulation checks via a 3,5-inch TFT colour display.

Read more...

---

Bringing predictive maintenance to the next level in the pulp and paper industry
Maintenance, Test & Measurement, Calibration
ennomotive has launched an international competition seeking innovative predictive maintenance solutions for conveyor belt systems, addressing a real operational challenge faced by pulp and paper company CMPC.

Read more...

---

Vibration sensor with CANopen interface for mobile machines
ifm - South Africa Maintenance, Test & Measurement, Calibration
ifm’s 3-axis VMB301 condition monitoring sensor integrates into the vehicle network via CANopen, delivering real-time bearing, vibration and temperature data to help mobile machines avoid costly damage and downtime.

Read more...

---

Linear regulated 2-channel laboratory power supply
Vepac Electronics Maintenance, Test & Measurement, Calibration
Vepac Electronics offers a dual-channel laboratory power supply built for safe, precise testing in laboratories and workshops.

Read more...

---

When oil gets old
Wearcheck Maintenance, Test & Measurement, Calibration
WearCheck explains how oxidation breaks down lubricating oils over time, and how routine oil analysis can catch the warning signs before equipment failure.

Read more...

---

SEW-EURODRIVE brings intelligent energy optimisation to Electra Mining
SEW-EURODRIVE Maintenance, Test & Measurement, Calibration
At Electra Mining Africa 2026, SEW-EURODRIVE will showcase its DriveRadar IoT platform for predictive maintenance and real-time energy optimisation, alongside plant energy surveys and an 1850 kW medium voltage motor display.

Read more...

---

Thermal imaging camera with high thermal resolution
Vepac Electronics Temperature Measurement Maintenance, Test & Measurement, Calibration
Vepac Electronics introduces a compact thermal imaging camera that helps technicians spot temperature problems before they become costly failures.

Read more...

---

What your lubricant really costs
Maintenance, Test & Measurement, Calibration
The purchase price of an industrial lubricant is only a fraction of what lubrication truly costs a business. Lubrication Engineers South Africa explains how shifting from unit price to total cost of ownership changes the equation significantly.

Read more...

---