Campbell Scientific HUB-SDM5 User Manual

INSTRUCTION MANUAL

HUB-SDM5

7/04

Copyright (c) 2004

Campbell Scientific, Inc.

Warranty and Assistance

The HUB-SDM5 is warranted by CAMPBELL SCIENTIFIC, INC. to be free
from defects in materials and workmanship under normal use and service for
twelve (12) months from date of shipment unless specified otherwise.
Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation
under this warranty is limited to repairing or replacing (at CAMPBELL
SCIENTIFIC, INC.'s option) defective products. The customer shall assume
all costs of removing, reinstalling, and shipping defective products to
CAMPBELL SCIENTIFIC, INC. CAMPBELL SCIENTIFIC, INC. will
return such products by surface carrier prepaid. This warranty shall not apply
to any CAMPBELL SCIENTIFIC, INC. products which have been subjected
to modification, misuse, neglect, accidents of nature, or shipping damage. This
warranty is in lieu of all other warranties, expressed or implied, including
warranties of merchantability or fitness for a particular purpose. CAMPBELL
SCIENTIFIC, INC. is not liable for special, indirect, incidental, or
consequential damages.

Products may not be returned without prior authorization. The following

act information is for US and International customers residing in countries

cont
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company
serves your country. To obtain a Returned Materials Authorization (RMA),
contact CAMPBELL SCIENTIFIC, INC., phone [phone]. After an
applications engineer determines the nature of the problem, an RMA number
will be issued. Please write this number clearly on the outside of the shipping
container. CAMPBELL SCIENTIFIC's shipping address is:

CAMPBELL SCIENTIFIC, INC.

RMA#_____
815 W
Logan, Ut

CAMPBELL SCIENTIFIC, INC. does not accept collect calls.

est 1800 North

ah 84321-1784

HUB-SDM5 Table of Contents

PDF viewers note: These page numbers refer to the printed version of this document. Use
the Adobe Acrobat® bookmarks tab for links to specific sections.

1. Introduction..................................................................1

2. HUB-SDM5 Specifications ..........................................1

3. General .........................................................................1

4. Installation and Wiring ................................................1

4.1 Wiring SDM Devices ...............................................................................2

4.2 Wiring SDI-12 Devices............................................................................3

5. Generic Junction Box..................................................4

6. Maintenance.................................................................4

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HUB-SDM5

1. Introduction

The HUB-SDM5 is a junction box and is used to connect multiple
Synchronous Device for Measurement (SDM) or SDI-12 devices/peripherals to
a single Campbell Scientific, Inc. datalogger. The HUB-SDM5 consists of an
environmental enclosure with six weather resistant bulkhead fittings and five
terminal strips.

2. HUB-SDM5 Specifications

Terminal Strips:

Three spring-loaded guillotine connections per terminal; two terminals in
common through a jumper creates five banks

Operating Temperature:

-55°C to +85°C

Operating Humidity:

Noncondensing 0% – 95%

Dimensions:

Length: 17.8 cm (7.0”)
Width: 19.7 cm (7.75”)
Depth: 13.3 cm (5.25”)

Weight:

0.82 kg (1.8 lbs)

3. General

Inside the HUB-SDM5 enclosure are five pairs of terminal strips. These
terminal strips are mounted on a DIN rail and an orange end cap separates each
pair. Each pair of terminal strips is connected to each other by means of a
jumper. The terminal strips are used to connect up to six wires to each other.
The wires are secured to the terminal by a spring-loaded guillotine.

4. Installation and Wiring

A U-bolt is used to mount the HUB-SDM5 to a 1.25 inch NPT pipe.

The spring-loaded guillotines are opened with a small flat blade (2.5 X 50 mm)
screwdriver (p/n 8125). Orient the screwdriver blade so that the blade edge is
perpendicular to the orange separators. Gently insert the small flat blade

1

HUB-SDM5

4.1 Wiring SDM Devices

screwdriver into the square slot located next to the circular wire port until it
bottoms out. For the cluster of four wire ports located on the left hand side of
the HUB-SDM5, the guillotine release slot is located to the right of the wire
port. For the wire ports on the right hand side of the HUB-SDM5, the
guillotine release slot is located to the left of the wire port. Once the
screwdriver has been completely inserted and has bottomed out, firmly press
the screwdriver down until the guillotine snaps open. Insert and hold the wire
as the screwdriver is removed.

Before connecting the SDM signal cable to the terminals, strip the wire
insulation back to expose ¼ inch of bare wire. Feed the cable through the
bulkhead fitting. Neatly separate the five wires into the following order, SDM
data, SDM clock, SDM enable, SDM ground, and SDM shield.

To CSAT3 #1

To CSAT3 #2

Sealed Bulkhead fitting

To LI-7500 #1
To LI-7500 #2

To Datalogger

FIGURE 1. HUB-SDM5 connecting four SDM devices to a datalogger.

2

HUB-SDM5

SDM Data

SDM Clock

SDM Enable

SDM Ground

SDM Shield

SDM Devices

FIGURE 2. HUB-SDM5 terminal strip connecting four SDM devices to a datalogger.

Datalogger or second
HUB-SDM5

4.2 Wiring SDI-12 Devices

Before connecting the SDI-12 signal/power cable to the terminals, strip the
wire insulation back to expose ¼ inch of bare wire. Feed the cable through the
bulkhead fitting. Neatly separate the four wires into the following order, SDI­12 data, SDI-12 power, SDI-12 ground, SDI-12 shield.

To SDI-12 sensor#1
To SDI-12 sensor#2

To SDI-12 sensor#3

Sealed

Bulkhead

Fitting

To

Datalogger

FIGURE 3. HUB-SDM5 connecting three SDI-12 devices

to a datalogger.

3

HUB-SDM5

r

SDI-12 Data

SDI-12 Powe

SDI-12 Ground

SDI-12 Shield

SDI-12 Devices

Datalogger or second
HUB-SDM5

FIGURE 4. HUB-SDM5 terminal strip with SDI-12 devices

5. Generic Junction Box

The HUB-SDM5 can be used as a generic junction box. In its default
configuration, six, five conductor cables can be connected to each other.
Three, ten conductor cables can be connected to each other by removing the
jumper between the terminal strips. Use a small screwdriver to pry the jumper
out.

6. Maintenance

There are no user-serviceable parts in the HUB-SDM5. Make sure that all
unused bulkhead fittings are sealed with a plug and that the lid is tightly
fastened.

connected to a datalogger.

4

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Campbell Scientific Companies

Campbell Scientific, Inc. (CSI)

815 West 1800 North

Logan, Utah 84321

UNITED STATES
www.campbellsci.com
[e-mail]

Campbell Scientific Africa Pty. Ltd. (CSAf)

PO Box 2450

Somerset West 7129

SOUTH AFRICA

www.csafrica.co.za

[e-mail]

Campbell Scientific Australia Pty. Ltd. (CSA)

PO Box 444

Thuringo wa Cent ra l
QLD 4812 AUSTRALIA
www.campbellsci.com.au

[e-mail]

Campbell Scientific do Brazil Ltda . (CSB)

Rua Luisa Crapsi Orsi, 15 Butantã

CEP: 005543-000 São Paulo SP BRAZIL

www.campbellsci.com.br

[e-mail]

Campbell Scientific Canada Corp. (CSC)

11564 - 149th Street NW

Edmonton, Alberta T5M 1W7

CANADA

www.campbellsci.ca

[e-mail]

Campbell Scientific Ltd. (CSL)

Campbell Park

80 Hathern Road

Shepshed, Loughborough LE12 9GX

UNITED KINGDOM

www.campbellsci.co.uk

[e-mail]

Campbell Scientific Ltd. (France)

Miniparc du Verger - Bat. H

1, rue de Terre Neuve - Les Ulis

91967 COURTABOEUF CEDEX

FRANCE

www.campbellsci.fr

[e-mail]

Campbell Scientific Spain, S. L.

Psg. Font 14, local 8

08013 Barcelona

SPAIN
www.campbellsci.es
[e-mail]

Please visit www.campbellsci.com to obtain contact information for your local US or International representative.