Detcon 100 Duct Mount Kit User Manual

Model 100 Duct Mount Kit

DETCON, Inc.

Model1 00

DETCON,INC.

DM-100

H2S

100PPM

CALP ORT

Operator’s Installation and Instruction Manual

Covers all versions of the 100 Series Sensor

4055 Technology Forest Blvd,

The Woodlands, Texas 77387

Ph.281.367.4100 / Fax [phone]

November 19, 2012 • Document #3726 • Revision 0.1

100 Duct Mount

Table of Contents

1.0 Introduction.......................................................................................................................................1

1.1 Principal of Operation ..................................................................................................................... 1

2.0 Installation.........................................................................................................................................1

3.0 Calibration.........................................................................................................................................2

4.0 Maintenance.......................................................................................................................................3

5.0 Warranty............................................................................................................................................3

6.0 Revision Log.......................................................................................................................................4

Table of Figures

Figure 1 Sample flow ..................................................................................................................................... 1

Figure 2 Cut-out Template.............................................................................................................................. 2

Figure 3 Dimensional..................................................................................................................................... 2

Figure 4 Cal Port............................................................................................................................................ 3

Shipping Address: 4055 Technology Forest Blvd, The Woodlands Texas 77381

Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067

Phone: [phone] • Fax: [phone] • www.detcon.com • [e-mail]

100 Series Duct Mount Kit ii

100 Duct Mount

1.0 Introduction

The Detcon Sensor Duct Mount Kit for Model 100 gas detection sensors allows a Detcon Model 100 gas
sensor assembly to be mounted so that the Sample Chamber is located inside of an air duct, while the Sensor
Assembly, located outside the duct, is still accessible for calibration and other adjustments. This method of
installation is much more economical than the typical sample draw type system that is normally used in such
applications. This instruction manual explains the installation, calibration, and maintenance procedures of the
duct mount con-figuration. Refer to the sensor instruction manual for information on the sensor assembly.

1.1 Principal of Operation

In operation, air flow through the duct enters the duct mount chamber through ports facing the on coming flow
of air. Once inside the chamber the sample passes by the sensor and then exits through similar ports that face
the opposite direction. If any target gas is present in the chamber, the sensor output signals will respond
accordingly as described in the sensor assembly instruction manual.

Sensor

Inside the DUCT

Flow

Sample Chamber

Flow

Figure 1 Sample flow

2.0 Installation

1 - Cut a clearance hole in duct as shown below. Mounting remains the same for square or round ducts.
Minimum suggested diameter for round duct is 10 inches to adapt with normal mounting techniques. Adapting
to an 8” diameter duct is possible with special mounting techniques. Below 8” diameter is not practical for
mounting.
2 - Mount the duct mount kit using four 1/4” sheet metal bolts or other appropriate hardware.
3 - If necessary mounting integrity can be enhanced by using the two holes on the upper portion of the duct
mount plate. Use standoffs and 1/4” sheet metal bolts or other appropriate hardware.
4 - Perform installation wiring as described in the sensor assembly instruction manual. If conduit is used, use
flexible conduit to allow for future maintenance.

A ¼” foam gasket is available for mounting the assembly on a round or curved ducts. Contact Detcon for
further information. Mounting remains the sane.

100 Series Duct Mount Kit Rev. 0.1 Page 1 of 4

100 Duct Mount

Model 100

DETCON,INC.

DM-100

100PPM

3.125"

4.25"

3"

Mounting Holes

5"

Figure 2 Cut-out Template

16.3"

H2S

Duct side
wall

Mounting Hardware

CALPORT

5"

7"

3"

5"6.15"

6.5"

Figure 3 Dimensional

3.0 Calibration

CAUTION: In high velocity air ducts, air flow may need to be shut down before calibration takes place.
1 - Verify that there is no air flow through the duct.
2 - Remove the cal port plug.
3 - Apply the target gas to the cal port at a flow rate of 500 milliliter per minute for combustible (FP series)
and solid state H2S (TP series) sensors. Apply a flow rate of 1000 ml/m for toxic gas (DM series) sensors.
Refer to the sensor manual for more information on the sensor calibration.
4 - Follow calibration instructions provided in the sensor instruction manual.

100 Series Duct Mount Kit Rev. 0.1 Page 2 of 4

5 - Remove the target gas and apply a zero air standard for clearing.
6 - If necessary, repeat items 3-5 as indicated in the sensor instruction manual.
7 - Replace the cal port plug. Calibration is complete.

Duct side
wall

Calibration tubing

Cal Port Plug

Gas Flow

Calibration Port

Figure 4 Cal Port

100 Duct Mount

4.0 Maintenance

To remove the sensor for replacement or maintenance, perform the following steps.

1 - Remove the two bolts that hold the sensor condulet to the duct mount plate.
2 - Pull the sensor out of the duct mount chamber and perform necessary maintenance.
3 - Reverse the procedure to replace the sensor. If necessary, lubricate the O-rings inside the duct mount
chamber so that the sensor rain shield will slide into the chamber easily.

5.0 Warranty

Detcon, Inc., as manufacturer, warrants each sensor duct mount kit for a period of one year under the
conditions described as follows: The warranty period begins on the date of shipment to the original purchaser
and ends one year thereafter. Should any part fail return the defective part to Detcon, Inc., for necessary
repairs or replacement.

100 Series Duct Mount Kit Rev. 0.1 Page 3 of 4

6.0 Revision Log

Revision

Date

Changes made

Approval

0.0

09/22/11

Rele

asedLU0.1

11/19/

12Added notation regarding minimum round duct diameter.

BM

100 Duct Mount

Shipping Address: 4055 Technology Forest Blvd, The Woodlands Texas 77381

Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067

Phone: [phone] • Fax: [phone] • www.detcon.com • [e-mail]

100 Series Duct Mount Kit Rev. 0.1 Page 4 of 4