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Home  » Applications   » Industrial Burn-In Ovens and Test Oven   » PTC Top Loading Test Oven
Despatch top loading PTC test oven for burn-in, calibration and qualification testing of downhole electronic logging equipment


The PTC is a top-loading oven specifically designed for burn-in, qualification testing and calibration of oil and gas downhole drilling instruments. In the field, these ovens are used for periodic calibration of the electronics on the drill tool. The oven simulates the downhole temperature conditions and validates that the instruments will work properly and accurately throughout the run.

The oven is built to stand up to harsh oilfield conditions for many years, with heavy duty construction and an aluminized interior for maximum corrosion resistance. Standard model top-loading PTC ovens are available in eight-foot or twelve-foot chamber lengths and can reach temperatures up to 260℃ (500℉). Horizontal airflow with adjustable louvers ensures uniform airflow across the entire length of the chamber.

A space-conscious footprint is combined with heavy duty dollies for easy moving. Marinite end caps can be machined to insert instruments, testing leads or tooling and can also be removed to allow two ovens to be used end-to-end for longer loads. The top-loading oven allows heavy equipment to be loaded into the test chamber by crane and silicone door seals and positive-latching clamps hold the door securely in place.

In addition to standard top-loading models, Despatch also offers front-loading models, higher temperature capabilities and custom lengths. Non-magnetic/non-conductive configurations with a fiberglass oven body and structural supports are available for electromagnetic instrument testing. These ovens come in 12, 15 and 24 foot chamber lengths and have a maximum temperature of 180℃ (356℉).

Standard digital controls regulate temperatures within tight tolerances and provide high limit protection. For more advanced control choose the optional Protocol 3™ microprocessor-based temperature and hi-limit controller with large LCD display and real time clock for auto start capability. Data-logging functionality enables reporting and analyzing and data files can be exported via the controller’s USB port.

Remote operation, programming and data logging | The Despatch Protocol Manager network utility software enables the operation of up to 32 Protocol 3™ and/or Protocol Plus controllers from a single, remote PC using RS485 communication.

More information on Protocol Manager Software

PTC Spec SheetPTC Spec Sheet


Standard Features:
  • Temperatures up to 260℃ (500℉)
  • 2.7, 4, 12 or 48 cubic feet (76.5, 113.3, 339 or 1360 liters)
  • Removable end caps to allow same model number ovens to be connected end-to-end
  • Horizontal airflow with adjustable louvers
  • Digital control with 3/4” (1.9cm) LED display
  • High limit over-temperature protection
  • Silicone door seals and positive latching clamps for security
  • UL listed open control panel





  • Protocol 3™ control with large LCD display, integrated data logging capabilities and USB port for simple oven set-up and data export
  • Non-magnetic, non-metallic models available
  • Front load model available
  • Disconnect switch
  • CE compliance
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