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Technical Specification Sheet

Document No. 149-317P25

January 26, 2011

Siemens Industry, Inc.

Page 1 of 8

Laboratory Room Airflow Measurement

Station

Figure 1. Laboratory Room Airflow Measurement Station.

The APOGEE Automation Laboratory Room Airflow

Measurement Station is an industrial grade, pre-

packaged, easy-to-install airflow measurement station,

which provides stable and precise exhaust airflow

measurement. It is intended for airflow measurement

applications where multiple exhaust devices such as

canopy hoods, snorkel exhausts, and other constant

volume exhaust devices are used within a laboratory.

Measurement of airflow is accomplished by unique

orifice plate or four quadrant sensing technology that

minimizes pressure loss and duct obstruction while

maintaining measurement accuracy at 2% of actual

flow (sensor only). Construction is heavy-duty, 22

gauge galvanized steel, including ductwork and orifice

plate components. For highly corrosive environments,

316L stainless, 20 gauge steel is available as an

option. Slip and flange end fitting connections are

available to match the ductwork construction.

Features

Orifice plate flow measurement or four-quadrant

airflow sensor with multipoint, center averaging

and signal amplification

Ultra low non-recoverable pressure loss

Ten sizes cover airflows from 36 to 8447 CFM

Built for corrosive environments

Field commissionable and adjustable -- not

dependent upon factory calibration

Factory-mounted measurement instrumentation to

simplify installation (optional)

Description

The Airflow Measurement Station consists of the

following components:

Galvanized steel round duct and airflow sensor in

sizes from 4" (10.2 cm) to 22" (55 cm) diameter.

316L stainless steel is an optional material.

Galvanized steel equipment enclosure with

exterior supply connection (optional)

Factory-mounted differential pressure transmitter

(optional)

Summary of content (8 pages)

PAGE 1
Technical Specification Sheet Document No.
PAGE 2
Specifications Materials (within air stream) – Standard Construction A 22 gauge galvanized steel casing, orifice & blade. Shaft is zinc-plated steel. Type A or B sensors available Construction B Construction C Damper Shaft Flanges 20 gauge 316L stainless steel casing, orifice & blade. Shaft is solid stainless steel. Type A sensors only. Accuracy Flow Measurement ±2% of actual flow @ listed ranges (sensor only.
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Dimensions Figure 2. Laboratory Room Airflow Station with Orifice Ring Flow Sensor. Siemens Industry, Inc.
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Figure 3. Laboratory Room Airflow Station with Multi-Point Sensor . Page 4 of 8 Siemens Building Technologies, Inc.
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Table 1. Flow Range for Orifice Airflow Sensor. Flow Range for Sensor “A” Inlet Size Maximum flow @ 1.0” dp CFM. Minimum flow @ 0.02” dp Lps CFM Lps Flow Sensor Inlet Area SQ.FT M2 Flow Coefficient 4 252 119 36 17 0.087 0.008 0.721 6 627 296 89 42 0.196 0.018 0.797 8 1049 495 148 70 0.349 0.032 0.750 10 1686 796 238 112 0.545 0.051 0.772 12 2394 1130 339 160 0.785 0.073 0.761 14 3254 1536 460 217 1.069 0.099 0.760 16 4429 2090 626 295 1.396 0.
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Table 3. Minimum Pressure Drop at Listed Airflow. Terminal Size 4 6 8 10 12 Page 6 of 8 Airflow Pressure Drop CFM In. wg Terminal Size Airflow Pressure Drop CFM In. wg 50 0.021 500 0.007 100 0.084 750 0.015 150 0.189 1000 0.027 200 0.337 1250 0.042 250 0.526 1500 0.060 100 0.011 2000 0.107 150 0.024 2500 0.167 200 0.043 3000 0.241 250 0.068 600 — 300 0.098 1000 0.013 350 0.133 1250 0.021 400 0.173 1500 0.030 450 0.219 2000 0.053 500 0.
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Ordering Information Part numbers are created based on the selections you choose. There are no spaces or dashes in the SAP part number. NOTE: Not all combinations or configurations will yield a valid part number in SAP. Sample: LGFE851R14BAS Model Number Control Package Mounting Side Inlet (Duct) Size Duct and Sensor Type End Fitting LGF E851 R 14 BA S 1. Begin with the Model Number, LGF. 2.
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. Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as design improvements are introduced. APOGEE and Insight are registered trademarks of Siemens Industry, Inc. Other product or company names mentioned herein may be the trademarks of their respective owners. © 2011 Siemens Industry, Inc. Siemens Industry, Inc. Your feedback is important to us. If you have Document No.