Rosemount Manual: UNI-TRAN UT-X-STXXXX Basic, Standard, Premium-Toxic Gas Transmitter | Rosemount Manuals & Guides

MODELS: Basic, Standard and Premium

UNI-TRAN

TOXIC GAS TRANSMITTER

UT-X-STXXXX

Premium Model Shown with ST1200 Sensor

Part Number: MAN-0012-00 Rev. 2

Copyright © 2003 Net Safety Monitoring Inc
Printed in Canada

This manual is provided for informational purposes only. Although the information contained in this manual is
believed to be accurate, it could include technical inaccuracies or typographical errors. Changes are, therefore,
periodically made to the information within this document and incorporated without notice into subsequent
revisions of the manual. Net Safety Monitoring Inc assumes no responsibility for any errors that may be
contained within this manual.

This manual is a guide for the use of a Toxic Gas Transmitter and the data and procedures contained within
this document have been verified and are believed to be adequate for the intended use of the transmitter. If the
transmitter or procedures are used for purposes other than as described in the manual without receiving prior
confirmation of validity or suitability, Net Safety Monitoring Inc does not guarantee the results and assumes no
obligation or liability.

No part of this manual may be copied, disseminated or distributed without the express written consent of Net
Safety Monitoring Inc

Net Safety Monitoring Inc products, are carefully designed and manufactured from high quality components
and can be expected to provide many years of trouble free service. Each product is thoroughly tested, inspected
and calibrated prior to shipment. Failures can occur which are beyond the control of the manufacturer. Failures
can be minimized by adhering to the operating and maintenance instructions herein. Where the absolute
greatest of reliability is required, redundancy should be designed into the system.

Net Safety Monitoring Inc, warrants its sensors and detectors against defective parts and workmanship for a
period of 24 months from date of purchase and other electronic assemblies for 36 months from date of
purchase.

No other warranties or liability, expressed or implied, will be honored by Net Safety Monitoring Inc.

Contact Net Safety Monitoring Inc or an authorized distributor for details.

Table of Contents

Unit I GENERAL INFORMATION ........................................ 1

INTRODUCTION .................................................................... 1

FEATURES ........................................................................ 1

SPECIFICATIONS ................................................................... 1

Sensor Specifications .......................................................... 1

Controller Specifications ........................................................ 2

Figure 1 - Dimensions for Adalet Enclosure (Standard and Premium Models) . . . . . . . . . . . . . . 3

Figure 2 -Dimensions for R ed-Dot Enclosure with ST 1210 H2S Sensor (Basic Model) . . . . . . . . 4

Figure 3 - Dimensions for Red-Dot Enclosure with ST1200 (H2S), ST1300 (SO2), ST1600 (CO)

Sensors (Basic Model) ................................................... 4

Unit II SYSTEM INSTALLATION......................................... 5

INSTALLATION ..................................................................... 5

Location of Sensors............................................................ 5

Un packi ng ................................................................... 5

Mounting .................................................................... 5

Wiring ...................................................................... 5

Sensor Separation ............................................................ 7

Initial LED Status .............................................................. 7

Figure 4 Uni-Tran Basic ST1200,ST1300, and ST1600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5 Uni-Tran Standard/Premium ST1200, ST1300, and ST1600terminal arrangement . . . . 9

Figure 6 Uni-Tran Basic ST1210 Terminal arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 7 Uni-Tran Standar/Premium ST1210 terminal arrangement . . . . . . . . . . . . . . . . . . . . . 11

Figure 8 Uni-Tran Terminal Connection diagram for Non-Isolated current output . . . . . . . . . . . 12

Figure 9 Uni-Tran Terminal Connection diagram for Isolated current output . . . . . . . . . . . . . . . 12

Figure 10 W iring with sensor separation for ST1200, ST1300, and ST1600 sensors . . . . . . . . 13

Figure 11 Wiring diagram with sensor separation for ST1210 . . . . . . . . . . . . . . . . . . . . . . . . . . 14

JUMPER LOCATION FOR NON-ISOLATED/ISOLATED CURRENT OUTPUT . . . . . . . . . . . . . . . . . . . 15

Figure 13 - Jumper Setting for Isolated Current Output (Standard & Premium) . . . . . . . . . . . . . 15

Figure 12 - Jumper Setting for Non-Isolated Current Output (Standard & Premium) ......... 15

Analog Output ............................................................... 15

Sensor Drift ................................................................. 15

Sensor Life ................................................................. 15

Sensor Cross Sensitivity ....................................................... 16

Table 1 - Cross Sensitivity of Electrochemical Sensor to 100 p.m. Concentrations . . . . . . . . . 16

Test Jacks (not available on Basic version) ........................................ 16

Unit III SYSTEM CALIBRATION ........................................ 16

CALIBRATION PROCEDURES ........................................................ 16

Calibration Procedure for Basic Model ............................................ 17

Calibration Procedure for Standard & Premium Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Periodic Response Check (Disable External Shutdowns) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

SENSOR REPLACEMENT ........................................................... 19

Table 2 - Table of Responses ................................................... 19

ORDERING INFORMATION .......................................................... 20

Appendix A Net Safety Monitoring Inc. Electrostatic Sensitive Device Handling

Procedure ......................................................... 21

Appendix B Wire Resistance In Ohms .................................. 22

Unit I GENERAL INFORMATION

INTRODUCTION

The Uni-Tran micro-controller based toxic gas detector provides fast, accurate, continuous and cost
effective monitoring of toxic gases in harsh industrial environments.

Net Safety selects the very best electrochemical sensors from the world's leading manufacturers for use in
its broad line of toxic gas detectors. High performance, proprietary circuits and micro-controller based
firmware ensure accurate and repeatable response in the most severe environments and a reduced need
for routine calibrations.

The Uni-Tran control module uses advanced micro-controller technology to provide a user interface that
is comprehensive, yet very simple to use. The full text LED display of the Premium and Premium Plus
versions gives the user complete instructions for routine operation, calibration and relay configuration;
without tools.

FEATURES

< Electrochemical sensor technology
< Low power consumption that works with 12 or 24 V dc systems
< Easy, non-intrusive one person calibration
< Sensor can be remotely mounted up to 75 feet from the display module
< Scrolling alpha-numeric LED display available in English, French or Spanish
< Gas specific colour coded enclosure
< Microprocessor based smart transmitter
< Conformal coated circuit boards

SPECIFICATIONS

Sensor Specifications

SENSOR
ELEMENT

Operating
Temperature
Range

Range of
Detection

Response Time

Linearity/
Repeatability

Span Drift

HS (ST1200)

2

electro-chemical

-40/C to +50/C
(-40F to +122F)

0 to 100ppm 0
to 50ppm and
0 to 20ppm

<30 seconds to
T90

3% of full scale/
1% of full scale

<2% of full
scale/month

1

HS (ST1210)

2

electro-chemical

-40/C to +50/C
(-40F to +122F)

0 to 100ppm
0 to 50ppm and
0 to 20ppm

<30 seconds to
T90

3% of full scale/
1% of full scale

<2% of full
scale/month

SO (ST1300)

2

electro-chemical

-20/C to +50/C
(-4F to +122F)

o

to +105 F)

0 to 20ppm and
0 to 100ppm

<15 seconds to
T90

3% of full scale/
2% of full scale

<2% of full
scale/month

CO (ST1600)

electro-chemical

-20/C to +50/C
(-4F to +122F)

0 to 500ppm

<30 seconds to
T90

3% of full scale/
1% of full scale

<5% of full
scale/year

Dimensions

Refer to Figures 1, 2, 3 and 4

Weight

Certifications

Enclosure
Material

0.5 Kg (1.0 lb) 0.1 Kg (.25 lb) 0.5 Kg (1.0 lb) 0.5 Kg (1.0 lb)

CSA and NRTL/C certified for hazardous locations. Class
I, Division 1, Groups C and D. IEC Rating Ex d IIB T6
NEMA 3R

Aluminum (optional stainless steel)

Controller Specifications

< Operating Voltage Range:

10.5 to 32 Vdc

< Power Consumption (at 24 Vdc):

Nominal (100 mA, 2.4 Watts) Maximum (200 mA, 4.8 Watts)

< Operating Temperature Range:

-40/C to +85/C (-40F to +185F)

CSA and
NRTL/C
certified for
hazardous
locations. Class
I, Division 1,
Groups C and D.
IEC Rating Ex d
IIB T6 NEMA
3R

< Humidity Range:

0 to 100% Relative humidity, non-condensing

< Enclosure Material:

Copper Free Cast Aluminum

< W eight:

Basic 0.9 Kg (2.0 lb)
Standard/Premium 2.3 Kg (5.0 lb)

< Certifications:

CSA and NRTL/C certified for hazardous locations. Class I, Division 1, Groups B, C and D,
NEMA 4X and 7. IEC Rating Ex d IIB+H2 T5

NOTE: Electronics only - CSA and NRTL/C certified for hazardous locations Class I, Division 2
Groups B, C and D pending.

NOTE: For Basic model - CSA and NRTL/C certified for hazardous locations. Class I, Division 1,
Groups C and D. IEC Rating Ex d IIB T5

< Current Output:

4-20 mA Into a maximum loop impedance of 800Ohms at 32Vdc. Isolated or non-isolated loop
supply

2

Figure 1 - Dimensions for Adalet Enclosure (Standard and Premium Models)

3

Figure 2 -Dimensions for Red-Dot Enclosure with ST1210 H2S Sensor (Basic Model)

Unit II SYSTEM INSTALLATION

Figure 3 - Dimensions for Red-Dot Enclosure with ST1200 (H2S), ST1300 (SO2), and

ST1600 (CO) Sensors (Basic Model)

4

INSTALLATION

Location of Sensors

There are no absolute rules for determining the quantity and location of gas detection instruments within
a particular facility. Care should be taken to locate the sensors in areas where gas escape may be
expected and where it is desirable to detect the presence of unwanted gas. Use redundancy where
enhanced protection or reliability is desired. Heavy gases such as H2S, CO and SO2 tend to accumulate
in low areas. Seek advice from experts who know the characteristics of the gas being detected, air
movement patterns and the facility. Use common sense and refer to various publications that discuss
general guidelines for your industry.

Unpacking

The UNI-TRAN is made up of two primary components. The housing and terminal board are a single
assembly to which the sensor is wired. The control module is a separate plug-in assembly. Since all
modern electronic equipment can be damaged by static electricity discharge, it is important to take
precautions. Discharge static electricity from your body by touching a grounded metal object before
handling the module. Remove the module by loosening the retaining screws. Carefully remove the
module from the housing by grasping the centre “pull” knob and pull straight away, then temporarily
store the control module in a clean and safe place until after the field wiring has been connected to the
terminal strip located in the base of the housing.

Mounting

The housing should be oriented so that the sensor is on the underside of the housing. Water will damage
electronic devices. Moisture in the air can condense within electrical conduit and drain into the
enclosure.

Wiring

NOTE

Before opening the detector enclosure or junction box, ensure that the area has been declassified,
or remove power from the unit.

NOTE

The control module (CPU board and Display Board) with cable should never be totally removed
from the Relay board and housing. If it is removed there are bright red alignment markings on the
cable and on the Relay board for you to use when re-inserting the cable into the Relay Board
connector.

NOTE:

The wiring procedures in this manual are intended to ensure proper functioning of the device
under normal conditions. However, because of the many variations in wiring codes and
regulations, total compliance to these ordinances cannot be guaranteed. Be certain that all
wiring complies with applicable regulations that relate to the installation of electrical
equipment in a hazardous area. If in doubt, consult a qualified official before wiring the
system.

5