A range of portable process calibrators for workshop bench testing and live plant environments is engineered to offer reliable insights for the demands of real industrial field calibration work.

Instrotech says the locally designed and manufactured Calog calibrators range, including the 4-20 mA Loop calibrator, is built around modern component technology, an intuitive interface, and a rugged IP54-rated housing.

Features of all calibrators in the range include:

• ‘Key-per-digit’ numeric entry for fast source value setup.
• Backlit liquid crystal display, switchable between numeric or trending views with programmable timing.
• Data-logging using SD card or USB, can be downloaded and opened in spreadsheet software.
• Compact and rugged, IP54-rated for dust and splash resistance.
• Lithium-ion battery with approximately 8 hours of run time, with built-in temperature sensing.
• Programmable auto-off and selectable date/time settings.
• Standard accessories include battery charger, carry case, non-slip rubber cover, and safety leads.
• Two-year guarantee against faulty materials and workmanship.
• The Calog-TEMP portable temperature calibrator is a high-precision, multifunctional temperature calibrator that handles the full range of temperature measurement and sourcing tasks in a single handheld device.

The Calog-LOOP II portable milliamps (mA) loop calibrator was first launched in 2005 as the original Calog product, and is now in its second generation, rebuilt for improved performance and expanded features, including data-logging and SD card storage.

The Calog-PRESSURE II portable pressure calibrator is a second-generation portable pressure calibrator that combines pressure measurement with the full capabilities of an mA loop calibrator, making it a single instrument for pressure transmitter calibration, I/P converter testing, and general loop maintenance.

Pressure sensing uses Keller PA-33x series digital pressure sensors, connected by means of a Binder connector for easy swap-out. The calibrator can simultaneously measure pressure and mA, or source mAs while measuring pressure, depending on the task.

Instrotech says the Calog-LC II portable load cell tester and calibrator is its most feature-complete portable calibrator, designed specifically for strain gauge load cell testing, diagnostics, and calibration. A key benefit of the Calog-LC II is in situ load cell testing, which means there is no need to remove the load cells.

Instrotech manufactures and distributes a range of process control instrumentation and specialised systems for both the South African and international markets.