OVEN TRACKER XL2 Thermocouple Probes 43
repeatable measurements. Attach to the product, test-piece or test-fixture
using a bolt or self-tapping screw.
• Clamp-on A quick and easy method suitable for ferrous and non-ferrous
materials. The product must have a thin, flat surface to ensure good thermal
contact.
• Magnetic A quick and easy method suitable for ferrous materials. The
product must have a flat surface to ensure good thermal contact.
• Welding/soldering A rapid-response probe normally mounted
permanently on a re-usable test-piece or test-fixture. Provides reliable,
repeatable measurements. Ensure probes are not connected to the logger when
they are being welded.
Air Measurement
• Adhesive (patch) Recommended for use where rapid response is
required, but used for air measurement only where clamp-on or magnetic
probes cannot be used due to product shape, etc. Secure the cable to the
product, test-piece or test-fixture using high-temperature adhesive tape
ensuring the probe is in space and able to measure the air temperature.
• Clamp-on A quick and easy method suitable for ferrous and non-ferrous
materials. The product must have a thin, flat surface to ensure continuing
attachment.
• Magnetic A quick and easy method suitable for ferrous materials. The
product must have a flat surface to ensure continuing attachment.
Testing Thermocouple Probes
Although thermocouples are generally robust, they can be damaged during
handling. To confirm their correct operation after installation, either:
• Set up the system as if to monitor a profile run using hardwired telemetry
(see p. 63 for details), and note the temperatures registered by the
thermocouples as they are displayed in Insight – or
• Use a type-K digital thermometer, attaching each thermocouple in turn to
the thermometer’s connector – or
• With a full set of thermocouples attached to the logger, and the logger
connected to the PC, open the Diagnostic section of the Communications
Setup dialog in Insight; this shows current probe temperatures (see p. 14 for
details).
Proceed as follows.
1. Note readings first at ambient temperature: thermocouples registering no
data in Insight, or an open circuit with a digital thermometer (*OC* in the
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