Brasch TRNS Generation 2 Manual de usuario
Brasch Environmental Technologies, LLC
140 Long Road, Suite 101
Chesterfield, Missouri 6 005
14-291-0440
www.braschenvtech.com
TRNS Generation 2
Installation / Operation Manual
Table of Contents
Introduction...................................................................................................................................4
General Description..................................................................................................................4
Features and Benefits..............................................................................................................5
Technical Specifications................................................................................................................6
Product Specifications..............................................................................................................6
Target Gas Specifications.........................................................................................................7
Carbon Monoxide.................................................................................................................7
Nitrogen Dioxide...................................................................................................................7
Description of Front Panel Indicators.......................................................................................8
Front Panel Indicators..........................................................................................................8
Operation Safety Notice................................................................................................................9
Types of Notices.......................................................................................................................9
Quick Start Guide.......................................................................................................................10
Step 1 – Mounting..................................................................................................................10
Step 2 – Input Wiring..............................................................................................................10
Step – Output Wiring...........................................................................................................11
Step 4 – Applying Power.........................................................................................................11
Installation...................................................................................................................................12
Mounting the Transmitter........................................................................................................12
Connecting the Power Supply................................................................................................1
Connecting the Voltage or Current Proportional Output........................................................14
Connecting the Modbus Output..............................................................................................15
Applying Power For the First Time.........................................................................................15
Installation Diagrams..............................................................................................................16
Operation....................................................................................................................................18
How the Transmitter Senses the Target Gas.........................................................................18
Factory Default Settings.........................................................................................................18
Using the Analog Proportional Output....................................................................................18
Adjusting the Proportional Output..........................................................................................19
Obtaining the Best Operation.................................................................................................19
Carbon Monoxide and/or Nitrogen Dioxide Transmitters...................................................19
Maintenance...............................................................................................................................20
Testing the Response to the Target Gas................................................................................20
Carbon Monoxide or Nitrogen Dioxide Transmitters..........................................................20
Replacing the Sensor.............................................................................................................21
Suggested Repair Parts.........................................................................................................22
Troubleshooting..........................................................................................................................22
Fault........................................................................................................................................22
Checking and Replacing Fuses..............................................................................................22
Common Installation/Operation Mistakes..............................................................................2
Proportional Output Connected Incorrectly........................................................................2
Setting the Proportional Output Incorrectly........................................................................2
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Rev 1.0 – December 22, 2020 2
Using Improper Resistance/Impedance.............................................................................2
Transmitter Mounted in an Unsatisfactory Location..........................................................2
Limited Warranty.........................................................................................................................24
Warranty Statement...........................................................................................................24
Service and Repair Procedures.........................................................................................24
Appendix.....................................................................................................................................25
Model Numbers and Descriptions..........................................................................................25
Transmitter Model Number and Description......................................................................25
Figures and Diagrams............................................................................................................25
IOM02
Rev 1.0 – December 22, 2020
Introduction
General Description
The Brasch Environmental Technologies TRNS Generation 2 Gas Transmitter is designed to
function as a gas sensor and signal transmitter. The transmitter consists of a sensor and
digital control circuitry. A linear proportional output circuit is able to provide analog signals to a
customer-supplied building management controller or a variable-frequency drive. An RS-485
circuit is able to provide two-way digital communication using Modbus RTU. A microprocessor
monitors the signal from the sensor and transmits that signal to the output as either an analog
or digital signal.
The sensor used in the transmitter operates on the electrochemical principle. A current is
produced when the target gas reacts chemically with an electrode inside the sensor. This
small current is changed to a voltage by the transmitter’s circuitry, amplified, and converted to
the proper output signal. This signal is proportional to the target gas concentration present at
the sensor.
The transmitter’s circuitry consists of a printed circuit board mounted inside a polycarbonate
housing. The housing has a NEMA R rating. Vents are located on the bottom and side of the
housing to allow the sensor access to ambient air.
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Rev 1.0 – December 22, 2020 4
Features and Benefits
•Comprehensive Monitoring
◦Detects CO and/or NO2
•Greater Coverage
◦Monitors up to 9,000 sq. ft.
•Enhanced Durability
◦Rainproof Water Resistance
◦Simple Service and Maintenance
•Simplified Installation
◦Preconfigured Wiring
◦Factory Calibration
◦Customized Programming
•Versatile Communication
◦Analog Output via User-Selectable Current or Voltage Loop
◦Digital Output via Modbus RTU Communication Protocol
•Effortless Upgrade
◦Works with New and Existing Building Controls Systems
◦Fully Backwards Compatible with TRNS Generation 1
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Rev 1.0 – December 22, 2020 5
Technical Specifications
Product Specifications
Input Power 24 VAC, 50/60 Hz, 0.25 A
Installation Category II (local level, over-voltage transients less than 500V)
Storage Temperature -50°C to 120°C (-58°F to 248°F)
Operating Temperature -20°C to 50°C (-4°F to 122°F)
Humidity 10% to 90% (non-condensing)
Ventilation Control Relays None
Internal Alarm None
Front Panel Indicators Power (green LED)
Fault (yellow LED)
Display None
Selectable Fan Settings None
Alert Levels None
Delay Times None
Dimensions 4.8” W x 4.72” H x 2.16” D (12.2 cm W x 12 cm H x 5.5 cm D)
Weight 1 lbs (0.5 kg)
Housing Gray, NEMA R, polycarbonate plastic
Compliance ANSI/ISA 92.00.01-2010 (R2015)
EN 50270
FCC Part 15 Subpart B
RoHS
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Rev 1.0 – December 22, 2020 6
Target Gas Specifications
This Brasch Gas Transmitter is available for monitoring carbon monoxide and/or nitrogen
dioxide as target gases. Regulatory agencies have determined the threshold concentrations at
which the gases become dangerous. Brasch Environmental Technologies, LLC has designed
their transmitters so that the measurement ranges for each target gas meet the agencies’
requirements. Each target gas, for which Brasch currently produces a transmitter, is listed
below along with the relevant concentration specifications.
Carbon Monoxide
Full Scale Span: 200 PPM
Resolution: 1 PPM
Minimum Accuracy*: ± 10% or 6 PPM
Expected Lifespan 10 years
Recommended
Recalibration Time 2 years
Nitrogen Dioxide
Full Scale Span: 10 PPM
Resolution: 0.1 PPM
Minimum Accuracy*: ± 15% or 0.8 PPM
Expected Lifespan 10 years
Recommended
Recalibration Time 2 years
*Allowable tolerance for accuracy and repeatability criteria as defined in Annex A, Item 2 of ANSI/ISA 92.00.01-2010 (R2015)
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Rev 1.0 – December 22, 2020 7
Description of Front Panel Indicators
The front panel indicators convey to the user the operational status of the transmitter. The
following table describes the function of each indicator. Please refer to the transmitter’s front
panel label for the indicator’s location.
Front Panel Indicators
Indicator Color Description
Power Green Glows whenever power is on
Fault Yellow Glows when expected end-of-life is reached
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Rev 1.0 – December 22, 2020 8
Operation Safet Notice
Certain procedures and operations detailed in this manual require that specific precautions be
taken prior to beginning the procedure or operation. When precautions are required, a notice
will be printed in an appropriate location in the manual. The user is urged to read and
understand all such notices.
T pes of Notices
Three types of notices may be used in this manual to describe the severity of the situation
encountered.
WARNING: This notice indicates that conditions exist that could cause personal injury
or loss of life.
CAUTION:Conditions exist that could cause damage to the equipment or other
property.
Note: Special consideration should be given to the procedure or operation,
otherwise an unexpected operational result could occur.
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Rev 1.0 – December 22, 2020 9
Quick Start Guide
Please read this entire manual before attempting to install and operate this gas transmitter.
This guide is only intended to provide the basic steps necessary for installation and operation.
Each step will reference the portion of the manual where more complete information can be
obtained.
Step 1 – Mounting
Determine the location for mounting your transmitter(s). The location(s) may be indicated on
the architectural drawing. Also, the owner or designer of the facility may be consulted.
Mounting guidelines can be found on page 12 of this manual.
Step 2 – Input Wiring
Provide a dedicated circuit at the required 24 VAC and 6 VA at each transmitter mounting
location. Follow all national and local wiring codes. The wiring should be at least 14 AWG. A
conductor connected to earth ground should also be provided. The circuit must include a
disconnect switch located within easy reach of the transmitter.
Color-coded wires exiting the transmitter housing through the top conduit connector are
provided for connecting the operating voltage to the transmitter. Therefore, it should not be
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Rev 1.0 – December 22, 2020 10
WARNING
This transmitter may require the use of voltage levels high enough to cause fatal injuries.
Proper procedures must be followed any time work is performed on this unit.
Only qualified personnel should attempt to install, maintain, or service this equipment.
CAUTION
Operating this transmitter with the incorrect voltage and power requirements can cause
internal electrical components to overheat and fail. Operation with the wrong power
requirement will void the manufacturer’s warranty and the installer will be responsible for any
damage that occurs.
Contact Brasch Environmental Technologies, LLC before connecting power to the transmitter
if you are unsure of the correct power requirement.
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