Series STRA Duct Mounted Airflow Measurement Station

Integral Flow Straightener, Ideal for Turbulent Measuring Conditions

The Series STRA Duct Mounted Airflow Measurement Stations utilize an airflow averaging element generating a velocity pressure signal similar to the orifice, venturi, and other primary elements. Single or multiple airflow elements are factory mounted and pre-piped in a casing designed for flanged connection to the ductwork. Multiple elements are joined together for connection to a differential measurement device (gage, transmitter, etc.) for flow measurement and indication purposes. It has been developed with a honeycomb airflow straightening section for use in duct systems having highly turbulent conditions at the point of measurement.

Product Applications

Building air intake and exhaust flow rate measurement
HVAC air flow measurement

Ordering

Grouped product items
Model	Description	Availability*	Qty	Price

Specifications

Accuracy:: Within 2% of actual flow when installed in accordance with published recommendations.
K Factor:: 0.97.
Velocity Range:: 100 to 10,000 fpm (0.51 to 51 m/s).
Wetted Materials:: Elements: 6063-T5 anodized aluminum; Casings: 16 ga G90 galvanized steel, 3003 aluminum air flow straightener.
Coatings:: Herewith VRL 500 phenolic coating Imron 333 polyurethane enamel.
Temperature Limits:: Galvanized Casings and Aluminum Elements 350°F (177°C) continuous operation (in air), 400°F (204°C) intermittent operation (in air).
Humidity Limits:: All Airflow Stations 0 to 100% non condensing.
Process Connections:: 1/4" compression fittings.

Features

Honeycomb airflow straightening section with 1/2" opening by 3" depth
Low signal-to-noise ratio
Factory mounted and pre-piped in a flanged duct section (casing)
Standard construction includes galvanized casing and 6063-T5 anodized aluminum flow sensors
Standard airflow stations can be operated (in air) continuously in temperatures up to 350°F or intermittently in temperatures up to 400°F

Options

F - (Oval Stations Only).
IM - Internal Pressure Connections.

Support Library

Product Literature

Manuals

Instruction Manual

Catalog Pages

Series STRA Catalog Page

Drawings

Model Chart

Rectangular or Oval Models:

EXAMPLE	STRA	O	12	X16	IM	Series STRA-R12X16-IM Duct Mounted Airflow Measurement Station, 12" x 16" oval duct, with internal pressure connections.
SERIES	STRA					Duct Mounted Airflow Measurement Station
CONFIGURATION		O R				Oval Rectangular
DUCT HEIGHT			8 10 12 14 15 16 18 20 22 24 26 28 30 32 34 36 37 40 44 48 52 56 60 66 72 78 84 90 96 102 108 114 120 200MM 250MM 300MM 350MM 370MM 400MM 425MM 450MM 500MM 550MM 565MM 600MM 610MM 615MM 700MM 750MM 765MM 1000MM 1100MM 1200MM 1250MM 1300MM 1450MM			8" 10" 12" 14" 15" 16" 18" 20" 22" 24" 26" 28" 30" 32" 34" 36" 37" 40" 44" 48" 52" 56" 60" 66" 72" 78" 84" 90" 96" 102" 108" 114" 120" 200MM 250MM 300MM 350MM 370MM 400MM 425MM 450MM 500MM 550MM 565MM 600MM 610MM 615MM 700MM 750MM 765MM 1000MM 1100MM 1200MM 1250MM 1300MM 1450MM
DUCT WIDTH				X8 X10 X12 X14 X15 X16 X18 X20 X21 X22 X24 X26 X28 X30 X32 X34 X35 X36 X39 X40 X42 X44 X48 X50 X52 X56 X60 X63 X66 X68 X72 X78 X84 X90 X96 X102 X108 X114 X120 X250MM X350MM X400MM X450MM X500MM X550MM X600MM X610MM X615MM X675MM X750MM X770MM X900MM X950MM X955MM X1000MM X1100MM X1150MM X1200MM X1370MM X1380MM X1400MM X1450MM X1470MM X1600MM X2400MM		8" 10" 12" 14" 15" 16" 18" 20" 21" 22" 24" 26" 28" 30" 32" 34" 35" 36" 39" 40" 42" 44" 48" 50" 52" 56" 60" 63" 66" 68" 72" 78" 84" 90" 96" 102" 108" 114" 120" 250MM 350MM 400MM 450MM 500MM 550MM 600MM 610MM 615MM 675MM 750MM 770MM 900MM 950MM 955MM 1000MM 1100MM 1150MM 1200MM 1370MM 1380MM 1400MM 1450MM 1470MM 1600MM 2400MM
OPTIONS					F IM	1-1/2" Flange for Oval Mount Station Only Internal Pressure Connections

Circular Models:

EXAMPLE	STRA	C	12	Series STRA-C12 Duct Mounted Airflow Measurement Station, 12" diameter duct.
SERIES	STRA			Duct Mounted Airflow Measurement Station
CONFIGURATION		C		Circular
DUCT DIAMETER			8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 40 41.5 42 44 48 54 56 60 66 72 78 84 90 96 102 108 114 120	8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" 32" 34" 36" 40" 41.5" 42" 44" 48" 54" 56" 60" 66" 72" 78" 84" 90" 96" 102" 108" 114" 120"