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Summary of Contents for Brasch TRNS Generation 2
- Page 1 TRNS Generation 2 Installation / Operation Manual Brasch Environmental Technologies, LLC 140 Long Road, Suite 101 Chesterfield, Missouri 63005 314-291-0440 www.braschenvtech.com...
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Page 2: Table Of Contents
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 –... - Page 3 Using Improper Resistance/Impedance................23 Transmitter Mounted in an Unsatisfactory Location............23 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...
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Page 4: Introduction
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. -
Page 5: Features And Benefits
Features and Benefits • Comprehensive Monitoring ◦ Detects CO and/or NO 2 • Greater Coverage ◦ Monitors up to 9,000 sq. ft. • Enhanced Durability ◦ Rainproof Water Resistance ◦ Simple Service and Maintenance • Simplified Installation ◦ Preconfigured Wiring ◦... -
Page 6: Technical Specifications
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... -
Page 7: Target Gas Specifications
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. -
Page 8: Description Of Front Panel Indicators
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... -
Page 9: Operation Safety Notice
Operation Safety 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. -
Page 10: Quick Start Guide
Contact Brasch Environmental Technologies, LLC before connecting power to the transmitter if you are unsure of the correct power requirement. Color-coded wires exiting the transmitter housing through the top conduit connector are provided for connecting the operating voltage to the transmitter. -
Page 11: Step 3 - Output Wiring
necessary to remove the front cover from the transmitter when connecting the voltage supply. Connect the hot power conductor to the black wire and the neutral conductor to the white wire. Refer to page 13 for further information. Step 3 – Output Wiring The transmitter conveys its sensor signal over two wires. -
Page 12: Installation
Installation Mounting the Transmitter The ability of the transmitter to sense the target gas depends greatly upon proper selection of the mounting location. This transmitter monitors the area around it by sampling the air that passes by the sensor. Since the sensor is mounted inside a housing, air must diffuse through the intake vent and pass by the sensor on its way out the exhaust vent. -
Page 13: Connecting The Power Supply
• Do not mount the unit near containers of chemicals such as gasoline, kerosene, alcohol, or other cleaning fluids. High level concentrations of these chemicals may be mistaken as the target gas by the sensor and cause false readings. Also, some welding gases may cause false readings. -
Page 14: Connecting The Voltage Or Current Proportional Output
Connect the hot power conductor to the black wire and the neutral conductor to the white wire. Connecting the Voltage or Current Proportional Output The Brasch Gas Transmitters include circuits that provide either a current loop or voltage proportional output for each gas sensor. Each output produces a linear response over the full scale range of the sensor. -
Page 15: Connecting The Modbus Output
See figure 1 on page 16 for a wiring diagram. Connecting the Modbus Output The Brasch Gas Transmitters also include a circuit that provides digital communication via Modbus RTU protocol. This output allows a client device to read the firmware version, gas sensor type, gas sensor value, and any error codes associated with the transmitter. -
Page 16: Installation Diagrams
Installation Diagrams Figure 1: Wiring – Analog Output Configuration Figure 2: Wiring – Digital Output Configuration IOM02 Rev 1.0 – December 22, 2020... - Page 17 Figure 3: Wiring – Remote Sensor Configuration IOM02 Rev 1.0 – December 22, 2020...
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Page 18: Operation
4-20 mA Using the Analog Proportional Output This Brasch Gas Transmitter is supplied with a linear proportional output that can be connected to a building management controller or variable-frequency drive. This output can produce either a current or voltage signal that is proportional to the concentration of the target gas present at the sensor. -
Page 19: Adjusting The Proportional Output
The linear outputs produce a signal based on the full scale response of the transmitter. As an example, a Brasch Carbon Monoxide Transmitter has a full scale output of 200 PPM CO. For the 4-20 mA output mode, 0 PPM CO would equal 4 mA while 200 PPM CO would equal 20 mA. -
Page 20: Maintenance
With most installations, the only variable that can be changed is the location of the transmitter. In some cases, you may find that a target gas source is too close to the transmitter. Consider other mounting locations for the transmitter or move the gas source farther away. Maintenance Testing the Response to the Target Gas Carbon Monoxide or Nitrogen Dioxide Transmitters... -
Page 21: Replacing The Sensor
However, sufficient response can be obtained to determine that the transmitter is working. Brasch Environmental Technologies recommends testing the detector once every six months to ensure proper response and accuracy. Replacing the Sensor The sensor’s useful lifetime depends greatly upon its operating conditions. -
Page 22: Suggested Repair Parts
Sensor Board Negative Fuse TR5-0.250 Fuse, TR5, time-lag, 1.0 A, 250 VAC Sensor Board Positive Fuse TR5-1.0 A package containing the proper quantities of fuses can be purchased through your Brasch distributor. Troubleshooting Fault The yellow LED on the front panel will glow to indicate a fault condition with the sensor. This is activated upon the sensor reaching the expected end of its useful lifetime. -
Page 23: Common Installation/Operation Mistakes
Common Installation/Operation Mistakes Proportional Output Connected Incorrectly The proportional output uses a red wire for the positive analog output and a green wire for the reference analog ground. Reversing these connections will result in inaccurate readings or no readings at all. Setting the Proportional Output Incorrectly If the controller connected to the proportional output is expecting a certain output signal, the jumpers on JP2 and JP3 must be configured to output that type of signal. -
Page 24: Limited Warranty
If service or repair of your Brasch product becomes necessary, an authorization request for returning the product to the Brasch factory must be obtained from our sales office. If you are an end user, please contact your Brasch distributor to initiate this request. The distributor, after obtaining a description of the problem, will contact the factory and request a Return Goods Tag (RGT) number. -
Page 25: Appendix
Appendix Model Numbers and Descriptions Each Brasch Gas Transmitter is given a model number that describes the type of target gas. This model number appears on the label on the front panel. Use the following list to completely identify a transmitter once you know the model number. - Page 26 Black +UNREG White Black -UNREG -COMM +COMM Figure 5: Input Power Connections 4-20 mA JP2 JP3 2-10 VDC JP2 JP3 1-5 VDC JP2 JP3 0.2-1 VDC JP2 JP3 Figure 6: Proportional Output Settings IOM02 Rev 1.0 – December 22, 2020...
- Page 27 Carbon Monoxide Output (mA) Nitrogen Dioxide Output (mA) Figure 7: Proportional Output Graphs Figure 8: Mounting Dimensions (Not to Scale) IOM02 Rev 1.0 – December 22, 2020...
- Page 28 The above figures are not complete lists of all possible desensitizing or contaminating gases or substances. Take caution to evaluate the probable effect of a contaminant not included in the above list. Contact Brasch Environmental Technologies technical support to learn more. IOM02...
- Page 29 Website: www.braschenvtech.com Technical Support Contact Information Phone: 314-291-0440 ext. 1006 Fax: 314-291-0646 Email: customerservice@braschenvtech.com Website: www.braschenvtech.com/support-for-existing-systems Revision: 1.0 Issue Date: December 22, 2020 Document Number: IOM02 © Brasch Environmental Technologies, LLC All Rights Reserved IOM02 Rev 1.0 – December 22, 2020...
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