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Probe Sheath

  • $497.00

Meets or exceeds the following methods/laws/requirements:

Section 6.1.1 (Sampling Train), USEPA Method 5
Section 6.1 (Type S Pitot Tube), USEPA Method 2
Page 23-25, APTD-0581: Constructions Details of Isokinetic Source Sampling Equipment
Section 5.1.2 (Type S Pitot tube), ISO 10780:1994(E)

Product Description

The Probe Sheath is used for measuring gas velocity, positive (impact) pressure and negative (wake) pressure, and temperature at sampling points. Connect to the metering console via an umbilical cable to start measuring temperature and pitot-tube pressures immediately.

Probe Sheath is frequently used together with a Probe Heater and a Probe Liner. The Probe Liner is inserted into the Probe Heater, and the Probe Heater is inserted into the Probe Sheath. The nozzle is attached to both the Probe Sheath and Probe Liner.

The Probe Sheath will be inserted into the sampling porthole on the smoke-stack. as part of a sampling train for stack testing. Move the Probe Sheath (with nozzle installed) along the calculated sampling points to traverse the smoke-stack.

This product connects to the following (non-exhaustive) list of products from Aer Sampling:

  1. K-191 --- Nozzles Fitting Kit
  2. K-157 --- Glass Nozzle Kit
  3. K-165 --- SUS Nozzle Kit
  4. PN-1379 --- Umbilical Cable Assembly
  5. Aer Sampling Probe Liners
  6. Aer Sampling Probe Heaters
Other Applicable Documents:

Product Specifications

Minimum porthole inside diameter needed: ~4 in. (10 cm) 

Probe sheath body:
~0.63 inch (16 mm) nut size
~0.92 inch (23.4 mm) internal diameter (ID)
~0.96 inch (24.4 mm) outer diameter (OD) 

Pitot tube: 3/8 inch (~9.53 mm) diameter; S-type

Orsat tubing: 1/4 inch (6.35 mm) outer diameter (OD)

Thermocouple probe:
Tip: 1/8 inch (~3.18 mm) outer diameter (OD)
Body: 1/4 inch (6.35 mm) outer diameter (OD)

Umbilical connections:
Pitot line (Positive): 1/4 inch (6.35 mm) quick connect body
Pitot line (Negative): 1/4 inch (6.35 mm) quick connect stem


Nominal length
(from tip to tail)

Effective length
(approximate; usable length, from tip to point where bends will hit porthole of stacks)

4 ft (~1.22 m)
3 ft (~0.91 m)
6 ft (~1.83 m)
5 ft (~1.52 m)

Packing dimensions
(Length x Width x Height):

4 ft Probe:
English (ft): 
Metric (m):

6 ft Probe:
English (ft): 
Metric (m): 

Weight (Gravitational):  

4 ft Probe: lbs / kg
6 ft Probe: 4.85 lbs / 2.20 kg

Other Information

Order probe liners and probe heaters separately. 

All our products come with a one-year warranty against manufacturing defects and one-month technical support for free. Please refer to our Frequently Asked Questions (FAQs) page for more details.


Information presented here is subjected to Aer Sampling Group's terms and conditions. 
In case of discrepancy between English version and the non-English version, the English version shall prevail.
Doc ID: AERHQWW-pn-1380-en
Last revised (Excluding prices): 0; 02.05.21

Catalog ID Catalog/Product Name Obsolete Catalog ID(s)
PN-1380 4 ft Probe Sheath
PN-1195, PN-375, UN-PS-4
PN-1381 6 ft Probe Sheath
PN-1196, PN-376, UN-PS-6

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