Omega TX905 Series Owner's manual

Category
Motor vehicle accessories & components
Type
Owner's manual

Omega TX905 Series Below you will find brief product information for Omega TX905 Series, a voltage input two-wire transmitter designed to produce a standard 4-20 mA output signal proportional to that produced by its voltage input. Transmission of the proportional current output may be accomplished by using inexpensive copper wire. The TX905 Series is normally powered by an unregulated power supply and the proportionally-transmitted signal begins at 4 mA, at the low end of its voltage range, and increases to 20 mA, at the high end of its voltage range.

Omega TX905 Series Below you will find brief product information for Omega TX905 Series, a voltage input two-wire transmitter designed to produce a standard 4-20 mA output signal proportional to that produced by its voltage input. Transmission of the proportional current output may be accomplished by using inexpensive copper wire. The TX905 Series is normally powered by an unregulated power supply and the proportionally-transmitted signal begins at 4 mA, at the low end of its voltage range, and increases to 20 mA, at the high end of its voltage range.

TX905
Field Rangeable Voltage
Input Two-Wire Transmitter
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Users Guide
O
N
Servicing
North America:
U.S.A.:
ISO 9001 Certified
One Omega Drive, Box 4047
Stamford, CT 06907-0047
Tel: (203) 359-1660
FAX: (203) 359-7700
Canada:
976 Bergar
Laval (Quebec) H7L 5A1, Canada
Tel: (514) 856-6928
FAX: (514) 856-6886
For immediate technical or
application assistance:
U.S.A. and Canada:
Sales Service: 1-800-826-6342 /1-800-TC-OMEGA
®
Customer Service: 1-800-622-2378 / 1-800-622-BEST
®
Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN
®
Mexico:
En Espan
~
ol: (001) 203-359-7803
FAX: (001) 203-359-7807
OMEGAnet
®
On-Line Service Internet e-mail
It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pur-
suing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon
certification.
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains,
and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.
Benelux:
Postbus 8034, 1180 LA Amstelveen
The Netherlands
Tel: (31) 20 3472121 FAX: (31) 20 6434643
Toll Free in Benelux: 0800 0993344
Czech Republic:
Frystatska 184, 733 01 Karviná, Czech Republic
Tel:+420(0)59 6311899 FAX:+420(0)59 6311114
Toll Free: 0800-1-66342
OMEGAs policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers
the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2005 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced,
translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of
OMEGA ENGINEERING, INC.
RETURN REQUESTS / INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY
PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER
SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the
outside of the return package and on any correspondence. The purchaser is responsible for shipping charges, freight, insurance
and proper packaging to prevent breakage in transit.
Servicing Europe:
FOR WARRANTY RETURNS, please have the following
information available BEFORE contacting OMEGA:
1.Purchase Order number under which the product was
PURCHASED,
2. Model and serial number of the product under warranty, and
3.Repair instructions and/or specific problems relative to the
product.
FOR NON-WARRANTY REPAIRS,
consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:
1. Purchase Order number to cover the COST of the repair,
2. Model and serial number of the product, and
3.Repair instructions and/or specific problems relative to the
product.
France:
11, rue Jacques Cartier, 78280 Guyancourt, France
Tel: +33 (0)1 61 37 2900 FAX: +33 (0)1 30 57 5427
Toll Free in France: 0800 466 342
Germany/Austria:
Daimlerstrasse 26, D-75392
Deckenpfronn, Germany
Tel: 49 (0)7056 9398-0 FAX: 49 (0)7056 9398-29
Toll Free in Germany: 0800 82 66342
United Kingdom: ISO 9002 Certified
One Omega Drive
River Bend Technology Centre
Northbank, Irlam, Manchester
M44 5BD, United Kingdom
Tel: +44 (0)161 777-6611
FAX: +44 (0)161 777-6622
Toll Free in United Kingdom: 0800-488-488
TX905, TX906
Voltage Input Two-Wire Transmitter
Page
Section 1 Introduction 1
1.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Models Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section 2 Installation 8
2.1 Mounting the TX905 or TX906 . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Wiring the TX905 or TX906 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TABLE OF
CONTENTS
0i
TX905, TX906
Voltage Input Two-Wire Transmitter
Page
Section 3 Calibration Instructions 16
3.1 Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2 Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Section 4 Troubleshooting Guide 21
Section 5 Accessories 23
Section 6 Specifications 24
TABLE OF
CONTENTS
ii
1.1 General Description
The OMEGA
®
TX905 or TX906 Voltage Input Two-Wire Transmitter will
produce a standard 4-20 mA output signal proportional to that
produced by its Voltage Input. Transmission of the proportional current
output may be accomplished by using inexpensive copper wire.
01
1
Introduction
1 Introduction
Figure 1-1 TX905, TX906
Transmitter
O
N
Figure 1-2 Dimensions (in inches)
2
03
Introduction 1
The TX905 or TX906 transmitter is normally powered by an
unregulated power supply as shown in Figure 1-3. The
proportionally-transmitted signal begins at 4 mA, at the low end of
its voltage range, and increases to 20 mA, at the high end of its
voltage range.
1
4
Introduction
Figure 1-3 TX94 RTD Transmitter
Introduction 1
05
The TX905 or TX906 two-wire transmitter works with voltage inputs and
provides an output current of 4-20 mA proportional to the input. Two copper
wires now carry the 4-20 mA output signal and dc voltage to operate the
transmitter, thereby reducing possible noise pick-up errors. The TX905 or TX906
does NOT provide isolation between its input and the 4-20 mA output.
6
1.2 Features
• 4-20 mA output
0.1% full-scale accuracy
• Upscale break protection
• Low Cost
1 Introduction
Introduction 1
1.3 TX905, TX906 Models Available
07
TX905 Field rangeable millivolt transmitter, 4 to 64 mV
TX906-V1 Field rangeable millivolt transmitter, 0.04 to 0.64 mV
TX906-V2 Field rangeable millivolt transmitter, 0.40 to 6.40 mV
TX906-V3 Field rangeable millivolt transmitter, 4 to 64 mV
Model Number Description
8
2
Installation
2.1 Mounting the TX905 or TX06
The TX905 or TX906 transmitter may be:
1. surface mounted,
2. mounted inside a protection head (refer to Figure 2-1), or
3. installed into the OMEGA mounting track (part number RT)
using an OMEGA mounting bracket (part number TX90-BR).
4. installed into standard 35mm DIN rail using an OMEGA
DIN rail mounting adapter (part number TX-90-DIN).
Figure 2-2 shows the RT mounting track. Figure 2-3 shows the
TX90-BR mounting bracket.
09
Figure 2-4 shows a typical installation of two transmitters using the
bracket and mounting track. Figure 2-5 shows the TX90-DIN rail
mounting adapter.
Figure 3-1 Assembly of the Transmitter inside
Protection Head
Installation 2
10
2 Installation
CAUTION
Hand tighten
transmitter
mounting
screws only.
Do not
overtighten.
Figure 2-2 RT Mounting Track (Dimensions in inches)
11
Installation 2
Figure 2-3 TX90-BR Mounting Bracket (Dimensions in inches)
12
2 Installation
Figure 2-4 Installation with the Bracket and Track (Dimensions in inches)
13
Installation 2
Figure 2-5 TX 90-DIN DIN Rail Mounting Adapter (Dimensions in inches)
14
2 Installation
2.2 Wiring the TX905 or TX906 (Refer to Figure 2-6)
1. Connect a dc power supply in series with the load to the
(+PS) and (-PS) power terminals. Note that the load (usually
a monitoring instrument) may be connected to either the
(+) or (-) power lead.
2. Connect the RTD element to the input terminals as shown.
15
Installation 2
Figure 2-5 Wiring Diagram for the TX905 or TX906
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Omega TX905 Series Owner's manual

Category
Motor vehicle accessories & components
Type
Owner's manual

Omega TX905 Series Below you will find brief product information for Omega TX905 Series, a voltage input two-wire transmitter designed to produce a standard 4-20 mA output signal proportional to that produced by its voltage input. Transmission of the proportional current output may be accomplished by using inexpensive copper wire. The TX905 Series is normally powered by an unregulated power supply and the proportionally-transmitted signal begins at 4 mA, at the low end of its voltage range, and increases to 20 mA, at the high end of its voltage range.

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