Apex Instruments, Inc. products

Isokinetic Sampling - Probes and Liners

Apex - Standard Method 5 Heated Probe

The Apex Instruments Standard Method 5 Heated Probe features a 1-inch diameter sheath constructed from corrosion-resistant stainless steel, modular 3/8-inch pitot tip, 1/4-inch stainless steel quick connects, type-K thermocouples for stack and probe temperature, probe heater, orsat line, and a small parts package. Standard lengths are 3 feet to 16 feet. Probes are ordered according to nominal (liner length). Effective length is one foot less than the nominal length. Order probe liners separately. Longer lengths and custom orders are available by request. Additional options include 3/8-inch quick connects and a 1.5-inch optional oversheath with PG-32S packing gland.

Apex - 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.

Apex - 3/8" Modular Pitot Probe

The unique design of the Apex modular pitot tip reduces the collection of water droplets in the pitot lines. The lower tube is self-draining while the offset in the upper tube acts as a water trap.

Apex - Method 5 Pitot Assembled Probe

Method 5 Pitot assembled with PM2.5-10 cyclone to create a Method 201A probe. The Apex Instruments Method 201A heated probe for sampling particulate matter. Method 5 probes are used in combination with Particle Measurement Cyclone Kits to create Method 201A Probes. Multiple fitting arrangements and cyclone assemblies are available.

Apex - Air Cooled Probe

Our updated Air-Cooled Probe design features a more robust alloy construction. Upgraded to 253MA with a new variable-speed high-capacity blower inside the riser, the new design will extend the life of the probe and increase the airflow by an additional 30%.

Apex - Dual Method 5 Heated Probe

The Apex Instruments Dual Method 5 Heated Probe features two 1-inch diameter sheaths constructed from corrosion-resistant stainless steel, with the pitot, orsat line, stack, and probe thermocouples running in-between the sheaths. The sheaths are welded together periodically down the length of the probe.