Dwyer Minihelic II Air Filter Gages User Manual download pdf

Operating Instructions for Minihelic

II Differential

Pressure Gages are included in Bulletin A-36 packed

with each gage. This kit is designed for gages with

standard barbed connections. If your gage has

optional male pipe threads, purchase (2) 1/8˝ x 1/8˝

NPT elbows to replace fittings included.

Minihelic

II Air Filter Gages

Specifications - Installation and Operating Instructions

Bulletin A-37

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]

Part Number

Description

Static Pressure Tip with integral 1/4˝

compression fitting. 2 included.

5´length 1/4˝ diameter aluminum

tubing. 2 included.

Surface Mounting Bracket. 20 ga. steel

with flat black finish.

#6 x 3/4˝ Pan Head sheet metal screw.

4 included.

1/8˝ NPT female adapter elbow. 2

included.

2 Way Vent Valve 1/8˝ NPT male x 1/4˝

compression fitting. 2 included

INSTALLATION PROCEDURE

1. Drill two 7/16˝ diameter holes in duct, one on either

side of filter and at least 12˝ upstream and downstream.*

Install static pressure fittings as shown above with tips

pointing into the air stream.

2. Attach Minihelic

II gage to mounting bracket using

studs and nuts supplied with gage.

3. Thread two-way vent valves into adapter elbows.

Handle of valve must align with remaining opening in

elbow when tight. Press completed assemblies onto

barbed connections at rear of gage as shown above.

4. Select a vertical plumb mounting surface for the gage

within 5 ft of the static tips. Location should be

reasonably free of vibration which can cause gage

pointer to oscillate. Attach bracket to surface with 4 sheet

metal screws supplied.

5. Cut aluminum tubing to length and connect between

static pressure tips and gage. The tip on the upstream

side of the filter is connected to the high pressure gage

connection.

6. Turn handles of both valves to “vent” position and

check gage for zero reading. Adjust if necessary

following instructions in bulletin A-36. Turn valves to

“line” or on position and read pressure drop. Periodically

re-check zero point to assure accuracy.

PARTS LIST/A-609 KIT

OW PRESSURE LINE

HIGH PRESSURE LINE

1-9/16

[39.69]

2-1/4

[57.15]

2X #60 HOLES

Ø3/64 [Ø.047]

FLOW

[

50.8]

[101.6]

FILTER

WALL

3-5/8

[92.08]

3-1/4

[82.55]

3-7/32

[81.76]

1-7/16

[36.51]

FILTER ELEMENT

AIR

FLOW

1 2

Summary of Contents

Page 1 - II Air Filter Gages

Operating Instructions for Minihelic®II DifferentialPressure Gages are included in Bulletin A-36 packedwith each gage. This kit is designed for ga

Page 2 - DWYER INSTRUMENTS, INC

INSTALLATION CHECK AND TROUBLESHOOTINGBefore putting your air filter gage into service or in theevent of initial pressure drop readings

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Dwyer Minihelic II Air Filter Gages User Manual

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Summary of Contents

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