Apex - Model 253 MA -Method 5 Sheath Probe

The 3/8-inch pitot, 1/4-inch stainless steel quick connects, stack temperature thermocouple with magnesium oxide insulation, and orsat lines are secured to the sheath, but are designed to allow for differences in thermal expansion rates. Heaters, liners, and modular pitot tips are sold separately. Zone heating is necessary if a heater is purchased with this probe sheath. The amount of zone heating required differs based on specific testing needs.