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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. 

The transmitter is attached in the mounting position in one of three ways.

Attach the housing to conduit using appropriate conduit fittings.  If you use this method, 
make sure that the conduit is securely attached to a solid support.  Firmly tighten the 
threaded nuts on the conduit fittings inside the transmitter housing so they will not 
loosen over time.

Attach the housing to a four inch square conduit box using the ½ inch fitting provided 
with the transmitter.  Make sure that the conduit box is firmly fastened to the mounting 
surface with screws.  Securely tighten the fitting nut on the inside of the conduit box so it
will not loosen over time.

Attach the housing to a solid support base using screws through the internal housing 
mounting holes.  This method requires removal of the housing cover to gain access to 
the mounting holes.  A mounting hole is located at the top and bottom of each housing 
end wall.

Find a flat area at least 6 inches high by 6 inches long and place the back of the open 
housing flat against it.  Using a pencil or other slender marking tool, mark the location of
the four mounting holes using the housing as a template.  Start the screws without the 
housing in place to avoid any possibility of damage to the housing or circuit boards.  
Remove the screws, place the housing in position, and install the mounting screws.  Do 
not over-tighten the screws as this may crack the plastic housing.  Be careful not to 
damage the printed circuit board. Carefully replace the housing cover and securely 
tighten all four of the cover retaining screws.

Connecting the Power Supply

While this transmitter does not require much power to operate, it is usually located near 
machines that do consume large amounts of power.  When these large machines operate, they

IOM02
Rev 1.0 – December 22, 2020

13

WARNING

This detector 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.

Summary of Contents for TRNS Generation 2

Page 1: ...Brasch Environmental Technologies LLC 140 Long Road Suite 101 Chesterfield Missouri 63005 314 291 0440 www braschenvtech com TRNS Generation 2 Installation Operation Manual...

Page 2: ...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...

Page 3: ...d 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...

Page 4: ...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 re...

Page 5: ...nance Simplified Installation Preconfigured Wiring Factory Calibration Customized Programming Versatile Communication Analog Output via User Selectable Current or Voltage Loop Digital Output via Modbu...

Page 6: ...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...

Page 7: ...h 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 Acc...

Page 8: ...er 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 Powe...

Page 9: ...understand all such notices Types 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 exis...

Page 10: ...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...

Page 11: ...eference conductor connects to the green wire When using the digital output the positive conductor connects to the brown wire and the negative conductor connects to the blue wire See figures 1 and 2 o...

Page 12: ...entative of the average gas value in that area These include but are not limited to locations near doorways fans ventilation inlets and outlets and areas with air velocities in excess of 3 3 ft s 1 m...

Page 13: ...ing cover to gain access to the mounting holes A mounting hole is located at the top and bottom of each housing end wall Find a flat area at least 6 inches high by 6 inches long and place the back of...

Page 14: ...for connecting the operating voltage to the transmitter Therefore it should not be necessary to remove the front cover from the transmitter when connecting the voltage supply Connect the hot power con...

Page 15: ...ociated with the transmitter Color coded wires exit the transmitter housing through the top conduit fitting so removal of the front cover should not be necessary At each transmitter the positive condu...

Page 16: ...Installation Diagrams IOM02 Rev 1 0 December 22 2020 16 Figure 1 Wiring Analog Output Configuration Figure 2 Wiring Digital Output Configuration...

Page 17: ...IOM02 Rev 1 0 December 22 2020 17 Figure 3 Wiring Remote Sensor Configuration...

Page 18: ...specified on the order form the following settings will be used to configure the analog proportional output of the transmitter Setting Default Analog Proportional Output Units mA Analog Proportional...

Page 19: ...he 4 20 mA output mode 0 PPM CO would equal 4 mA while 200 PPM CO would equal 20 mA Follow the instructions supplied with your controller to adjust the controller s input for the proper scaling of the...

Page 20: ...t contact the transmitter directly The engine should be allowed to operate until a level of the target gas is sufficient to activate the ventilation system Depending upon the volume of the area where...

Page 21: ...l 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 conditi...

Page 22: ...l be approximately 10 years from the original manufacturing date for both Carbon Monoxide and Nitrogen Dioxide sensors The signal is triggered by a clock in the sensor board In the event that the unit...

Page 23: ...er must be greater than 100 k If these requirements are not adhered to the proportional output will not accurately reflect the concentration of gas measured by the sensor Transmitter Mounted in an Uns...

Page 24: ...nd would like to discuss it with a factory service technician you may call the number listed on the product label You will be transferred to a technician specially trained to service that product This...

Page 25: ...ly identify a transmitter once you know the model number Transmitter Model Number and Description Output Type Target Gas CO NO2 CO NO2 Analog TRNS2 CM Analog TRNS2 ND Analog TRNS2 NCM Analog Digital T...

Page 26: ...v 1 0 December 22 2020 26 UNREG COM UNREG COMM COMM Black White Black Figure 5 Input Power Connections JP2 JP3 4 20 mA 2 10 VDC 1 5 VDC 0 2 1 VDC JP2 JP3 JP2 JP3 JP2 JP3 Figure 6 Proportional Output S...

Page 27: ...roportional Output Graphs 4 6 8 10 12 14 16 18 20 0 50 100 150 200 Carbon Monoxide Output mA Concentration ppm CO 4 6 8 10 12 14 16 18 20 0 2 5 5 7 5 10 Nitrogen Dioxide Output mA Concentration ppm NO...

Page 28: ...0 ppm NO 0 5 Sensitivity measured 10 ppm Cl2 100 Sensitivity measured 20 ppm SO2 2 Sensitivity measured 400 ppm CO 0 1 Sensitivity measured 400 ppm H2 0 1 Sensitivity measured 400 ppm C2H4 0 1 Sensiti...

Page 29: ...merservice braschenvtech com Website www braschenvtech com Revision 1 0 Issue Date December 22 2020 Document Number IOM02 Brasch Environmental Technologies LLC All Rights Reserved Technical Support Co...

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