Ebtron GTx116 Technical Manual

a measurable difference!

®

Gold Series Thermal Dispersion Airflow Measurement Technology

Model GTx116

Technical Manual

Advantage III

Gold Series by Ebtron

Installation, Operation and Maintenance Technical Manual

GTx116

“Plug & Play” Transmitters

Combination RS-485 and Dual Analog output model: GTC116

Combination Ethernet and Dual Analog output model: GTM116

LonWorks®output model: GTL116

Data Logger output model: GTD116

Document Name: TM_GTx116_R9A1

EBTRON, Inc. 1663 Hwy. 701 S., Loris SC 29569 • Toll Free: 800.2EBTRON (232.8766) • Fax: [phone] • Internet: EBTRON.com

TM_GTx116_R9A1

LISTED

European Union

Shipments

Part Number: 930-0000

Models GTC116 and GTM116

BACnet is a registered trademark of ASHRAE. ASHRAE does not endorse, approve or test
products for compliance with ASHRAE standards. Compliance of listed products to the
requirements of ASHRAE Standard 135 is the responsibility of BACnet International (BI).
BTL is a registered trademark of BI.

Models GTC116 and GTE116

a measurable difference!

®

Copyright © 2015, EBTRON®, Inc.

All brand names, trademarks and registered trademarks are the property of their respective owners. Information contained within this document is subject to
change without notice. Visit EBTRON.com to view and/or download the most recent versions of this and other documents.

All rights reserved.

LIST OF EFFECTIVE AND CHANGED PAGES

Insert latest changed pages (in bold text); remove and dispose of superseded pages.

Total number of pages in this manual is 44.

Page No Revision * . . . . . . .Description of Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Date

1, 2 . . . . . . . . . . . .R9A . . . . . . . . . . . . . . . .Updated revision to R9A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .05/13/2016

3-44 . . . . . . . . . . .R9A . . . . . . . . . . . . . . . .Minor corrections to reflect Advantage 3 Setup Menus changes for consistency among products . . . . . . . .05/13/2016

1-44 . . . . . . . . . . .R8A . . . . . . . . . . . . . . . .All pages revised/updated to reflect Advantage 3 updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .01/21/2015

2

EBTRON, Inc. 1663 Hwy. 701 S., Loris SC 29569 • Toll Free: 800.2EBTRON (232.8766) • Fax: [phone] • Internet: EBTRON.com

GOLD SERIES GTX116 TRANSMITTER

a measurable difference!

®

TM_GTx116_R9A

OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

ADVANCED TECHNOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

GTx116 TRANSMITTER FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . .6

ORDERING GUIDE - GTx116 TRANSMITTER . . . . . . . . . . . . . . . . . . .6

GTx116 TRANSMITTER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . .7

GTx116 Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . .7

Power Transformer Selection . . . . . . . . . . . . . . . . . . . . . . . . . .8

Connecting Power to the Transmitter . . . . . . . . . . . . . . . . . . . .8

Connecting Sensor Probes to the Transmitter . . . . . . . . . . . . .9

GTC116, GTM116 - COMBINATION ANALOG + NETWORK

TRANSMITTER SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

GTC/GTM116 - ANALOG OUTPUT

OUTPUT WIRING AND SETUP . . . . . . . . . . . . . . . . . . . . . . . . .10

GTC116 - RS-485 NETWORK WIRING CONNECTIONS . . . . .10

RS-485 Network Cable Specifications . . . . . . . . . . . . . .10

Connecting to an RS-485 Network: . . . . . . . . . . . . . . . .10

GTx116 TRANSMITTER START-UP, INITIALIZATION AND SETUP

MENUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Changing the System of Units - IP units or SI Units . . . . . . .12

GTx116 TRANSMITTER CALIBRATION . . . . . . . . . . . . . . . . . . . . . .12

GTx116 LCD DISPLAY NOTIFICATIONS . . . . . . . . . . . . . . . . . . . . . .12

Factory Default Menu Settings for GP1 Sensor Probes . . . .13

GTx116 CHANGING FACTORY DEFAULT SETUP

MENU SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Setup Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Selecting Actual and Standard Output Measurement Type .14

Output Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Changing the LCD Display from Volumetric Flow

CFM to Velocity FPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Converting the Analog Output Signal from FPM to CFM . . . .14

Locking the Configuration Settings . . . . . . . . . . . . . . . . . . . .14

VIEWING SENSOR DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Viewing Sensor Data on the Local LCD Display . . . . . . . . . .15

Viewing Sensor Data over BACnet or Modbus Networks or

through the EB-Link Reader . . . . . . . . . . . . . . . . . . . . . . . . . .15

Sensor Addressing and Probe Positioning . . . . . . . . . . . . . . .15

GTC/GTM116 - ALARM FEATURES . . . . . . . . . . . . . . . . . . . . .16

Average Alarm (AO2 ASGN=ALRM) . . . . . . . . . . . . . . . .16

Trouble Alarm (AO2 ASGN=TRBL) . . . . . . . . . . . . . . . . .16

No Fault (NO FAULT=HI) . . . . . . . . . . . . . . . . . . . . . . . . .16

Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Low Alarm - “LO ALRM= ON” . . . . . . . . . . . . . . . . . . . . .16

High Alarm - “HI ALRM= ON” . . . . . . . . . . . . . . . . . . . . .16

Trouble Alarm - “AO2 ASGN=TRBL” . . . . . . . . . . . . . . . .16

GTC/GTM116 - ANALOG OUTPUT TYPE SELECTION AND

SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

GTC/GTM116 - Converting Analog Output Signal

Values to Airflow and Temperature . . . . . . . . . . . . . . . .17

GTC/GTM116 - OUTPUT TEST - Sending a Test Output

Signal to the Host Control System . . . . . . . . . . . . . . . . .17

GTC116 - TRANSMITTER SETUP FOR RS-485 NETWORK

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

GTC116 - RS-485 Network Options and

Communications Menu Settings . . . . . . . . . . . . . . . . . .18

GTC116 - Setting Transmitter Termination for

RS-485 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

GTC116 - Setting RS-485 Network Protocol . . . . . . . . .18

GTC116 - Setting Transmitter Address . . . . . . . . . . . . .18

GTC116 - Setting Baud Rate . . . . . . . . . . . . . . . . . . . . .18

GTC116 - Setting Modbus Parity . . . . . . . . . . . . . . . . . .18

GTC116 - Setting BACnet Device Instance Number . . .18
GTC116 - Resetting Communications Options to

Factory Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

GTM116 - TRANSMITTER SETUP FOR ETHERNET

NETWORK OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

GTM116 - Selecting Static or Dynamic IP Settings . . . .19

GTM116 - Setting Ethernet Transmitter IP Address . . .19

GTM116 - Setting Subnet Mask . . . . . . . . . . . . . . . . . . .19

GTM116 - Setting Gateway IP . . . . . . . . . . . . . . . . . . . . .19

GTM116 - Setting BACnet Protocol Mode . . . . . . . . . . .20

GTM116 - Setting Device Instance Number . . . . . . . . .20

GTM116 - Resetting Communications Options to Factory

Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

GTM116 - ETHERNET WIRING CONNECTIONS . . . . . . . . . . .20

GTL116 - LONWORKS TRANSMITTER SETUP . . . . . . . . . . . . . . . .22

GTL116 - LONWORKS NETWORK CONNECTIONS . . . . . . . . .22

GTL116 - LONWORKS INTERFACE . . . . . . . . . . . . . . . . . . . . .23

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Basic Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

GTL116 - VELOCITY AND FLOW VARIABLES

CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Velocity and Flow Variables . . . . . . . . . . . . . . . . . . . . . .24

Velocity and Flow Configuration Properties . . . . . . . . . .24

GTL116 - AREA INPUT VARIABLE . . . . . . . . . . . . . . . . . . . . . .25

Area Input Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Pressure Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Pressure Configuration Properties . . . . . . . . . . . . . . . . .25

Temperature Variables and Configuration Properties . . . . .26

Temperature Configuration Properties . . . . . . . . . . . . .26

GTL116 - DEFAULT DELTA VALUES . . . . . . . . . . . . . . . . . . . . .26

EB-Link WIRELESS INFRARED COMMUNICATIONS OPTION . . . . .27

EB-Link Card Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Obtaining and Installing EB-Link Software . . . . . . . . . . . . . .28

EB-Link Reader Software . . . . . . . . . . . . . . . . . . . . . . . .28

EB-Link Software for PDA Devices . . . . . . . . . . . . . . . . .28

Real Time Duct Traverses Using EB-Link . . . . . . . . . . . . . . . .28

FIELD ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

ALTITUDE CORRECTION ADJUSTMENT . . . . . . . . . . . . . . . . . .29

ADJUSTING THE LOW LIMIT CUTOFF . . . . . . . . . . . . . . . . . . .29

FACTORY CALIBRATION ADJUSTMENTS . . . . . . . . . . . . . . . . .29

Field Adjustment Wizard - AUTOMATED FIELD ADJUSTMENT29

Overview of the Field Adjustment Wizard . . . . . . . . . . .29

Engaging and Using the Field Adjustment Wizard . . . .29

MANUAL ADJUSTMENT OF FACTORY OFFSET/GAIN

CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Procedure for 1 Point Field Adjustment . . . . . . . . . . . . . . . . .30

Procedure for 2 Point Field Adjustment . . . . . . . . . . . . . . . . .30

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

GENERAL TROUBLESHOOTING (All GTx116 Systems) . . . . .32

GTC116 (ANALOG OPERATION) TRANSMITTER

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

GTM116 ETHERNET TRANSMITTER TROUBLESHOOTING . .34

GTL116 LonWorks TRANSMITTER TROUBLESHOOTING . . . .34

APPENDIX A - WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . .35

GTC116 Combination Analog/RS-485 Output Transmitter

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

GTM116 Combination Analog/Ethernet Output Transmitter

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

GTL116 LonWorks Output Transmitter Wiring Diagram . . . .36

APPENDIX B - GTx116 SETUP MENUS . . . . . . . . . . . . . . . . . . . . . .37

Table of Contents

3

EBTRON, Inc. 1663 Hwy. 701 S., Loris SC 29569 • Toll Free: 800.2EBTRON (232.8766) • Fax: [phone] • Internet: EBTRON.com

GOLD SERIES GTX116 TRANSMITTER

a measurable difference!

®

TM_GTx116_R9A

TM_GTx116_R9A

Figure 1. GTx116 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Figure 2. GTx116 Transmitter Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Figure 3. GTx116 Transmitter Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Figure 4. GTx116 Transmitter Mechanical Detail Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Figure 5. GTx116 Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Figure 6. Type A and Type B Transmitter Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 7. Connector Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 8. GTC116 Combination Analog/RS-485 Transmitter Interior Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Figure 9. GTM116 Combination Analog/Ethernet Transmitter Interior Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Figure 10. Example of Probe Mounting and Connector Locations for Proper Decoding of Traverse and EB-Link Data . . . . .15

Figure 11. GTL116 LonWorks Transmitter Interior Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 12. EB-Link Installation Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Figure 13. EB-Link Reader and PDA Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Figure 14. Typical EB-Link Data Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Figure A-1. Model GTC116 Combination Analog/RS-485 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Figure A-2. Model GTM116 Combination Analog/Ethernet Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Figure A-3. Model GTL116 LonWorks Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Figure B-1. TM_GTx116 System of Units Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Figure B-2. TM_GTx116 Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Figure B-2. GTx116 Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

List of Figures

Table 1. GTx116 Connectivity Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Table 2. GTx116 Power Transformer Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Table 3. Standard “IP” and “SI” Menu Units Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Table 4. Factory Default Menu Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Table 5. GTx116 Alarm Types and Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Table 6. GTC/GTM116 Converting Analog Output Values to Airflow/Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Table 7. GTM116 TCP/IP Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Table 8. GTx116 BACnet Object List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Table 9. GTx116 Modbus Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Table 10. GTL116 LonWorks Node Velocity and Flow Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Table 11. GTL116 LonWorks Node Velocity and Flow Configuration Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Table 12. GTL116 LonWorks Area Input Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Table 13. GTL116 LonWorks Node Pressure Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Table 14. GTL116 LonWorks Node Pressure Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Table 15. GTL116 LonWorks Node Temperature Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Table 16. GTL116 LonWorks Node Temperature Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Table 17. General Troubleshooting (All GTx116 Systems) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Table 18. GTC116 and GTM116 - Analog Operation Transmitter Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Table 19. GTC116 RS-485 Transmitter Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Table 20. GTM116 Ethernet Transmitter Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Table 21. GTL116 LonWorks Transmitter Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

List of Tables

4

EBTRON, Inc. 1663 Hwy. 701 S., Loris SC 29569 • Toll Free: 800.2EBTRON (232.8766) • Fax: [phone] • Internet: EBTRON.com

GOLD SERIES GTX116 TRANSMITTER

a measurable difference!

®

TM_GTx116_R9A

Network Connectivity

Solutions

OVERVIEW

EBTRON’s GTx116-P+ transmitter is designed for measurement of
airflow and temperature in duct and plenum applications. The
GTx116-P+ transmitter accepts from one to four model GP1 probes
with a total of up to 16 sensors and provides individual flow and
temperature readings as well as average readings. A programma­ble alarm feature can be set for average flow low limit, high limit
and system/probe/sensor faults. Analog output 2 (OUT2) can be
configured as active low (0VDC or 4mA) or active high (5/10VDC or
20mA) when assigned as an alarm output on GTC116 and GTM116
models. The transmitter is fully independent of the sensors and
does not require field matching to them. It includes a 16 character
LCD display for airflow, temperature and system configuration and
diagnostics. Field configuration is accomplished through a simple
four-button interface on the main circuit board. Individual sensor
airflow and temperature measurements can be displayed from the
diagnostic mode and are beneficial as an HVAC system diagnostic
tool. The airflow output signal can be filtered, and a process low
limit can be set to force the output to zero when airflow falls below
a user defined value. A Field Adjustment Wizard feature can be
engaged for one or two point field adjustment in applications where
field adjustment is required. The GTx116-P+ transmitter is available
in analog output and network output versions.

SPECIFICATIONS

ADVANCED TECHNOLOGY

• Microprocessor-based electronics with industrial
grade integrated circuits.

• “Plug and Play” design.

• Accepts from 1 to 4 probes with maximum of 16

airflow and temperature sensors.

• LCD display and Push-button user interface for sim­ple field configuration and diagnostics.

• Programmable Alarm Output (models GTC116 and
GTM116) for average flow low/high limits or sys­tem/sensor faults.

• Independent airflow and temperature output.

• Analog output signals and network protocols avail-

able for interface with virtually all modern building
automation systems.

Maximum Sensing Points

•16(16 airflow + temperature, inde­pendently processed)

Sensor System Configuration

(max.)

• Type A (probes x sensors): 2x8

• Type B (probes x sensors): 4x4

Digital Signal Processing

• Microprocessor: Yes

• Multiplexing: 32 channels

• A/D Converter: 12-Bit

"Plug and Play" Sensor Systems

• Probes do not require matching to
transmitter

Power Requirements

• 24 VAC (22.8 to 26.4 VAC), at 12
to 20 VA (dependent on number of
sensors); isolation not required

• "Brownout" protection: "Watchdog"
reset circuit

• Protection: Over voltage, over cur­rent and surge protection

Enclosure

• Aluminum

User Interface

• Pushbutton and LCD display

Display

• 16 character alpha-numeric dis­play (auto-ranging)

Output to Host Controls

GTC116, GTM116: (Combination Dual

Analog Output + Network models):
Analog Output: Isolated dual

0-10VDC / 0-5VDC
(resolution 0.010 / 0.020% FS) or
4-20mA and:

for GTC116: Dual analog plus RS­485 Output at 76.8 kbps max
BACnet

®

, Modbus

or
for GTM116: Dual Analog plus

10-BaseT Ethernet, BACnet,
Modbus, and TCP/IP

GTL116: LonWorks®Free Topology

Transceiver (no analog output)

Airflow Output Adjustments:

• Field Adjustment Wizard

• Offset/gain

• Airflow Output adjustable integra-

tion 1 to 1000

• Airflow Low Limit Cutoff: Forces
output to zero below defined value

• Alarm Output programmable for
low and high limits

System Diagnostics

• Sensor/transmitter diagnostics
mode and alarm output option

Environmental Limits

• Operating Temperature: -20° F to
120° F (-28.8° C to 48.8° C)

• Moisture: 0 to 99% rh, non con­densing (protect from water)

Compatible Sensor Systems

• GP1 probes

• GB1 differential airflow sensors

Listings

• UL®873 Airflow & Temperature
Indicating Devices

• CE (EU shipments only)

• BACnet BTL Listing

Warranty

• 36 months from shipment

Modbus

LONWORKS

®

Figure 1. GTx116 Transmitter

Ethernet

5

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Output to Host Controls Output/Protocols Supported Airflow Temperature Status

Analog: Linear 0-5VDC / 0-10VDC or 4-20mA Yes Yes Yes

RS-485: BACnet

®

-MS/TP, Modbus-RTU

Yes Yes Yes

Analog: Linear 0-5VDC / 0-10VDC or 4-20mA Yes Yes Yes

BACnet

®

Ethernet

BACnet

®

-IP
Modbus-TCP
TCP/IP

LonWorks

®

- Model GTL116

Free Topology Transceiver Yes Yes Yes

Data Logger - Model GT

D116

Connectivity is not available while the Data Logger is connected.

Airflow, temperature and timestamp are recorded on the attached USB thumb-drive.

Combination Analog / RS-485

Model GT

C116

Combination Analog / Ethernet

Model GT

M116

Yes Yes Yes

-

2 x 8 Sensor Connectors
4 x 4 Sensor Connectors

D Data Logger

16

LonWorks® Free Topology

Combination - Analog (0-5VDC / 0-10VDC or 4-20mA) and
Ethernet, BACnet®, Modbus, TCP/IP

L

Type B

C

GT 1

Transmitter Output

M

Combination - Analog (0-5VDC / 0-10VDC or 4-20mA) and
RS-485 (BACnet®, Modbus)

Transmitter Type

Type A

ORDERING GUIDE - GTx116 TRANSMITTER

Figure 3. GTx116 Transmitter Ordering Guide

Table 1. GTx116 Connectivity Options

Figure 2. GTx116 Transmitter Features

Power switch

Switching power supply
conserves energy and
reduces heat

Pushbutton interface
simplifies field configuration

(Note: devices are plug and play and
generally do not require configuration.)

Expansion port

Multiplexers independently
measure sensor voltages from
1 up to 16 sensing points

Gold plated interconnects to
sensor input receptacles

Output signal terminal.

connection to fused and.

protected output cards.

.

LCD contrast.

Transmitter status LED.

(Green 1 second flash normal;

2 second flash for fault)

High accuracy.

A/D converter.

Gold plated interconnects.

to optional output cards.

Positive locking cable.

receptacles with gold.

interconnects.

GTx116 TRANSMITTER FEATURES

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In locations exposed to direct rain and/or snow, the transmitter must be enclosed in a NEMA4 enclosure.

Leave unobstructed space of at least 9 in. (228.6 mm) above, 2 in. (50.8 mm) to each side and 3.5 in. (88.9 mm) below the
transmitter to allow for cover removal, sensor connections and heat dissipation.

Locate the transmitter in a location that can be reached by all connecting cables from the sensor probes.

Do not drill into the transmitter enclosure since metal shavings could damage the electronics.

GTx116 TRANSMITTER INSTALLATION

The GTx116 transmitter is designed for use in an environment between -20° F to 120° F (-28.8° C to 48.8° C) where
it will not be exposed to rain or snow.

The transmitter should be mounted upright in a field accessible location. The enclosure (Figure 4) is designed to
accept 1/2 in. (12.7 mm) electrical fittings for signal and power wiring at the top left and right sides of the circuit
board. The transmitter should be located such that the connecting cables from all of the sensor probes reach the
receptacles on the bottom of the transmitter enclosure.

Figure 4. GTx116 Transmitter Mechanical Detail Drawing

GTx116 Mechanical Dimensions

2) IF UNIT HAS 2 PROBE CONNECTIONS THEN IT IS A TYPE "A" UNIT.
IF UNIT HAS 4 PROBE CONNECTIONS THEN IT IS A TYPE "B" UNIT.

NOTES:

1) MEASUREMENTS IN BRACKETS ARE IN MILLIMETERS.

Ø.88

[Ø22.23 mm]

6.69

[169.86 mm]

5.94

[150.81 mm]

1.38

[34.93 mm]

SEE NOTE 2

1.56

[39.67 mm]

Ø.19

[Ø4.76 mm]

2.50

[63.50 mm]

7.94

[201.55 mm]

.38

[9.53 mm]

7.19

[182.55 mm]

8.69

[220.73 mm]

.75

[19.05 mm]

5.19

[131.76 mm]

PROVIDE 3.5 INCH MINIMUM CLEARANCE AT

BOTTOM FOR CONNECTOR ACCESS.

PROVIDE 9 INCH MINIMUM CLEARANCE AT TOP

FOR COVER ACCESS (SLIDE UP TO REMOVE).

PROVIDE 2 INCH MINIMUM CLEARANCE AT BOTH

SIDES OF ENCLOSURE

1.38

[35.05 mm]

[O4.83 mm]

O.19

[182.63 mm]

[201.68 mm]

[9.65 mm]

[39.62 mm]

[131.83 mm]

[150.88 mm]

[169.93 mm]

[O22.35 mm]

O.88

2) IF UNIT HAS 2 PROBE CONNECTIONS THEN IT IS A TYPE "A" UNIT.
IF UNIT HAS 4 PROBE CONNECTIONS THEN IT IS A TYPE "B" UNIT.

NOTES:

1) MEASUREMENTS IN BRACKETS ARE IN MILLIMETERS.

7

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Power Transformer Selection

Select a 24 VAC transformer based on the maximum power requirements indicated on the transmitter label (20 VA) or
from the table below. The operating supply voltage (transmitter power “ON” with all sensor probes connected) should
not be less than 22.8 VAC or greater than 26.4 VAC.

Connecting Power to the Transmitter

Slide the cover plate up and off of the transmitter enclosure, and ensure that the power switch is in the “OFF” position
before connecting the 24 VAC power source.

Connect 24 VAC power to the large, two position power input terminal labeled “POWER” on the upper right hand side of
the main circuit board (Figure 5). Since the output signals are isolated from the power supply, it is not necessary to pro­vide an isolated (secondary not grounded) power source.

Multiple GTx116 transmitters wired to a single transformer must be wired “in-phase” (L1 to L1, L2 to L2).

Table 2. GTx116 Power Transformer Selection Guide

Figure 5. GTx116 Power Connections

REPLACE WITH

1.5 AMP

FAST ACTING ONLY

OUTPUT

1 2 COM

POWER

24VAC IN

L2 L1

ON

OFF

L2

L1

24 VAC

22.8 to 26.4 VAC
20 VA max

.

Power
Switch

Power Fuse
Replace with UL

®

listed, 1.5 amp, fast acting only

P.N. 800-1115 (10 pack)

LISTED

Total

Sensors

Minimum

VA Req.

Total

Sensors

Minimum

VA Req.

Total

Sensors

Minimum

VA Req.

Total

Sensors

Minimum

VA Req.

1 12 5 14 9 17 13 19

2 13 6 15 10 17 14 19

3 13 7 15 11 18 15 20

4 14 8 16 12 18 16 20

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Connecting Sensor Probes to the Transmitter

After mounting the sensor probes and transmitter, connect one or more sensor probe cable plugs to the circular recep­tacles located at the bottom of the GTx116 transmitter enclosure. Probes are “Plug and Play” and do not have to be con­nected to a specific receptacle on the transmitter (unless traverse data is desired - see note below).

Provide a “drip loop” at the transmitter if there will be the potential for water runoff or condensation along the sensor probe
cable(s).

Sensor probe cable plugs are “keyed” as shown in Figure 7. Line up plug with receptacle and push straight on to receptacle. DO
NOT TWIST. Squeeze cable plug “ribs” towards receptacle when removing. Forcing the cable plug in or out of the receptacle will
damage the connectors and void warranty.

If traverse data is desired, probes should be installed and connected to the transmitter using the mounting convention specified
in the separate GP1 sensor probe manual. Proper installation simplifies sensor location decoding during data analysis.

Figure 7. Connector Detail

Figure 6. Type A and Type B Transmitter Detail



TypeATRANSMITTER

Accepts1or2probesupto8sensorseach

TypeBTRANSMITTER

Accepts1to4probesupto4sensorseach

Align Small Key and Slot

Align Large Key and Slot

Transmitter ReceptacleCable End Plug

Squeeze and Pull to Remove

DO NOT TWIST!

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GTC116, GTM116 - COMBINATION ANALOG + NETWORK TRANSMITTER
SETUP

The GTC116 Combination card option allows simultaneous analog outputs and RS-485 differential bus/line transceiver
outputs designed to integrate with various network protocols.

The GTM116 Combination Analog/Ethernet card option allows simultaneous analog outputs and full duplex IEEE 802.3
ethernet interface with automatic re-transmission on collision and cyclic redundancy checking on network data. An on­board microcontroller performs over 7 million instructions per second to insure minimal network latency. Link status as
well as network activity are available via on-board LED indicators.

The GTC116 and GTM116 combination cards plug directly onto the main circuit board as shown in Figures 8 and 9.

GTC/GTM116 - ANALOG OUTPUT OUTPUT WIRING AND SETUP

Analog output connections are made at the top left of the transmitter main circuit board OUTPUT connector as shown in
Figures 8 and 9. Independent 12-bit (4096 discrete states) linear analog outputs are provided for airflow at OUTPUT ter­minal 1, and for temperature (or alarm) at OUTPUT terminal 2, each with over voltage and over current protection. Airflow
and temperature outputs are field selectable for either 0-5/0-10VDC or 4-20 mA. The OUTPUT terminal 2 can be
assigned as an Alarm output to provide an active high, active low or trouble alarm output. Outputs are galvanically iso­lated from the main power supply to permit simple integration with virtually all building automation systems.

To wire the analog output signals, slide the cover plate up and off of the enclosure. Ensure that the power switch is in
the “OFF” position. Connect signal wires for airflow rate and temperature (or alarm) to the small, three position output
terminal labeled “OUTPUT” on the upper left hand side of the main circuit board as indicated in Figure 8. Airflow output
is at terminal 1, and temperature, airflow alarm or trouble alarm output is at terminal 2.

GTC116 - RS-485 NETWORK WIRING CONNECTIONS

Refer to Figure 8, and the following paragraph for network wiring considerations.

RS-485 Network Cable Specifications

The RS-485 network cable shall be shielded twisted pair with a characteristic impedance of 100 to 130 ohms.
Distributed capacitance between conductors shall be less then 100 pF per meter. Distributed capacitance between con­ductors and shield shall be less then 200 pF per meter. The maximum recommended length of a network segment is
1200 meters with AWG 18 cable.

Connecting to an RS-485 Network:

Connect the NET+, NET- and COM terminals with shielded twisted pair cable meeting the specifications defined in the
previous paragraph (typically using two pairs, with one wire not used; one pair for +/- and [at least one of] the wires in
other pair for COM when using 2-pair cable). The connection to the network must be made in a "daisy chain” configura­tion. "T" connections and stubs are NOT permitted. The shield should be terminated at one end on the network only.

*CAUTION
For ISOLATED output, the COM connection MUST BE CONNECTED to the network common for proper operation.
In addition, when the Analog Output is concurrently used with the RS-485 Output, the Common connection for
both Analog and RS-485 Outputs must be at the same potential.

For NON-ISOLATED output, the COM connection MUST BE CONNECTED to the common ground that is used by
the other network devices (typically the ground side of the 24VAC supply; the L2 terminal at the POWER connec­tor block as shown in Figure 8). In addition, when the Analog Output is concurrently used with the RS-485
Output, the Common connection for both Analog and RS-485 Outputs must be at the same potential.

When configured for a 4-20mA output, the GTC116 is a “4-wire” device. The host controls shall not provide any excitation volt­age to the output of the GTC116.

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ESC ENTER

CONTRAST

REPLACE WITH

1.5 AMP

FAST ACTING ONLY

OUTPUT

1 2 COM

POWER

24VAC IN
L2 L1

ON

OFF

RS-485

NET COM

NET -

NET +

ON

TERM

F1

F2

VDC mA

OUT 1

OUT 2

RS-485

Analog Output Fuses

F1=OUT1
F2=OUT2

UL listed 0.125 Amp

P.N. 800-1105 (Qty:10)

Transmitter Status LED

(Green 1 second flash normal;

2 second flash for fault)

Power Switch

COM*
NET

-

NET +

ANALOG OUTPUT
1: Airflow
2: Temperature/Alarm

COM: Common

(RS-485 output below)

*CAUTION
The common for the ANALOG and the RS-485 outputs must be at the same potential.
For ISOLATED RS-485 output, COM connection MUST BE CONNECTED to network common.
For NON-ISOLATED output, COM connection MUST BE CONNECTED to the common ground that other network devices are using (typically the
ground side of the 24VAC supply - L2 of the POWER terminals). Refer to RS-485 Network Wiring Connections paragraph for additional detail.

RS-485 Activity LED.

(Green LED indicating RS-485 network activity).

SW1 (for OUT1)
Airflow - Output Signal Select
SW2 (for OUT2)
Temperature/Alarm/Trouble ­Output Signal Select
VDC: (0-5/0-10 VDC) or
mA: 4-20 mA

LCD Display

RS-485 OUTPUT

(For Analog Output, see
separate output above)

Combination Analog/

RS-485 Output Card

P.N. 800-1825

ACTIVITY

TRAFFIC

LINK

D4

D3

D2

ETHERNET

10/100

VDC mA

S1

S2

F1

F2

ESC ENTER

CONTRAST

REPLACE WITH

1.5 AMP

FAST ACTING ONLY

OUTPUT

1 2 COM

POWER

24VAC IN

L2 L1

ON

OFF

Combination Analog/ Ethernet
Output Card
P.N. 800-5026

LCD Display

ACTIVITY (green) indicates
Ethernet output board
health/status

(Green 1 second flash normal;
2 second flash for fault)

TRAFFIC (green) indicates
Ethernet traffic

LINK (green) indicates
Ethernet link status

Power Switch

RJ45 Ethernet Output

ANALOG OUTPUT
1: Airflow
2: Temperature/Alarm

COM: Common

(RJ45 Ethernet output below)

Analog Output Fuses

F1=OUT1
F2=OUT2

UL listed 0.125 Amp

P.N. 800-1105 (Qty:10)

SW1 (for OUT1)

Airflow Output Signal Select

SW2 (for OUT2)

Temperature/Alarm/Trouble -

Output Signal Select

VDC: (0-5/0-10 VDC) or

mA: 4-20 mA

1 2 3 4

off off off off

No Termination

off oon on off End of Line

on off off oon Fail-safe Bias

DIP Switch Position

TERMINATION DIP Switch

Network

Termination

OFF ON

Figure 9. GTM116 Combination Analog/Ethernet Transmitter Interior Detail

Figure 8. GTC116 Combination Analog/RS-485 Transmitter Interior Detail

SW3 TERMINATION Switch

11

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GTx116 TRANSMITTER START-UP, INITIALIZATION AND SETUP MENUS

To ensure a successful start-up, verify that the airflow measuring station and transmitter are installed in accordance with
EBTRON guidelines.

Move the power switch to the “ON” position. The transmitter executes a complete self-check each time the power is
turned on that takes 10 seconds to complete.

The GTC116 and GTM116 default analog output signals are set to 4-20mA. The output signal can be changed to 0­5VDC/0-10VDC using board by setting switches SW1, SW2 and then entering the desired setting in the Setup menu. The
GTC116, GTM116 and GTL116 must be properly configured based on the system network protocol. Review the section

for the corresponding transmitter output card or contact EBTRON Customer Service, toll free, at 800-232-8766.

Changing the System of Units - IP units or SI Units

The GTx116 transmitter is provided with the system of units set to I-P. To change to S.I., simultaneously press and release
the “ENT” and “ESC” buttons during normal operation. “IP/SI UNITS” will be indicated on the LCD display. Refer to
Appendix B SYSTEM OF UNITS MENU for details on the System of Units menu. Note that Setup Menu items are shown
in IP System Of Units. When SI System of Units is selected, the units of measure abbreviations used in the menus is
shown in Table 3.

Check the physical installation, power connections and model specific signal wiring prior to turning the power switch to the “on”
position.

“IP” System of Units Description “SI” System of Units Description

FPM Feet per minute MPS Meters per second
CFM Cubic feet per minute LPS Liters per second

SQF Square feet SQM Square meters

F Fahrenheit C Celsius

Table 3. Standard “IP” and “SI” Menu Units Abbreviations

GTx116 TRANSMITTER CALIBRATION

The GTx116 uses high quality industrial grade components and is designed for years of trouble-free operation. Periodic
recalibration of the transmitter is neither required or recommended. Transmitter field calibration verifiers are available
for purchase from EBTRON for installations requiring periodic validation of instrumentation. Contact EBTRON for more
information.

GTx116 LCD DISPLAY NOTIFICATIONS

Following a brief initialization at power up, the LCD display automatically displays airflow and temperature with units of
measurement in all upper case (caps) characters. The display provides additional information on system status and
alarm conditions. Refer to the ALARM FEATURES section of this manual for additional detail on Alarm and Trouble Error
code indications.

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Display Description I-P S.I.

AIRFLOW= Airflow measurement method, Actual or Standard. ACT ACT
*LCDU/M= Airflow units of measure ACFM LPS

*AREA= Free area where station is located (required for volumetric measurement)

0.00 sq.ft.
(see note)

0.000 sq.meters

(see note)
*AO1 SGNL= GTC/GTM116 output 1 signal type voltage or mA (airflow) mA mA
*AO1 UM= Output 1 units of measure AFPM MPS
*AO1 FS= GTC/GTM116 output 1 signal full scale 5,000 FPM 25 MPS
*LLIMIT= GTC/GTM116 low limit cutoff 0 AFPM 0 AMPS
*FLOW ADJ= Output 1 Offset-Gain On/Off Off Off
*GAIN= Output 1 Gain factor 1.000 1.000
*OFF= Output 1 Offset factor 0.000 0.000
*TEMP METH= Temperature Averaging Weighted Avg. Weighted Avg.
*AO2 SGNL= GTC/GTM116 output 2 signal voltage or mA (temperature or alarm) mA (see alarms) mA (see alarms)
*AO2 MS= GTC/GTM116 output 2 signal minimum scale -20º F -30º C
*AO2 FS= GTC/GTM116 output 2 signal full scale 160º F 70º C

*LCD INTG=

Number of flow calculations to be averaged for LCD display.

100 100

*AO1 INTG=

Number of flow calculations to be averaged for AO1 output.

30 30

*EB-LK INT=

Number of flow calculations to be averaged for EB-Link readings.

300 300

*ALT=

Altitude for flow correction relative to mean sea level (0 ft).

0 ft 0 m

*AO2 ASGN = Output 2 Assigned Type: Temperature/Alarm

TEMP TEMP

*SETPNT=

Alarm setpoint value. When AO2 ASGN=ALARM , operates in conjuction with
TOL= value.

00

*TOL=

Alarm range tolerance value. When AO2 ASGN=ALARM , this setting establishes
the alarm range relative to the SSETPNT= value.

10% 10%

*NO FAULT=

Sets the AO2 normal (not alarm) output state relative to the full scale analog
output selected. HHI provides maximum full scale under normal conditions and
minimum scale during alarm. LLO provides minimum full scale under normal
conditions and maximum scale during alarm.

HI HI

*DELAY= Time that the alarm condition must exist before alarm output is activated. 2 minutes 2 minutes

*ZERO OFF =

Set to YYES to inhibit LO alarm condition when flow reading is zero (dependent on
LLIMIT= setting). Set to

NN

O to disable this feature.

NO NO

*RESET =

Set to AAUTO to have alarm self-clear when alarm condition no longer exists. Set

o MMANUAL to require manual reset of alarm.

AUTO AUTO

Note: For GP1 probes, area is stored in one-wire, but can be changed.

Table 4. Factory Default Menu Settings

Factory Default Menu Settings for GP1 Sensor Probes

The GTx116 transmitter is “plug and play” and does not require setup unless a network option is selected that requires
configuration. Table 4 shows the factory default settings for all compatible sensor probes.

To change the Factory Default Settings, see: CHANGING FACTORY DEFAULT SETUP MENU SETTINGS.

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t

GTx116 CHANGING FACTORY DEFAULT SETUP MENU SETTINGS

Setup Menu Options

The GTx116 Transmitter is setup and tested at the factory to be fully operational when sensor probes are connected and
power is applied (set the power switch to the “ON” position). Factory settings can easily be changed using the SETUP
MENU by simultaneously pressing and releasing the “UP” and “DOWN” buttons while the transmitter is in its normal oper­ating mode. Navigate through the menu using Appendix B to make changes to the transmitter configuration. The settings
take effect immediately. The following are common field modifications to the factory default settings.

Selecting Actual and Standard Output Measurement Type

The transmitter is set from the factory to provide actual airflow measurement units (displayed as “ACFM” and “AFPM”).
In this mode, airflow measurements are calculated for actual airflow conditions. If using Actual airflow, corrections for
altitude are entered through the ALT= setting in the Setup menu. If desired, the output can be set to provide standard
airflow measurement units (displayed as “SCFM” and “SFPM) which provides measurements that are corrected to stan­dard conditions.

Output Scaling

EBTRON’s Gold Series sensors are individually calibrated between 0 and the factory default full scale in wind tunnels to
standards traceable to the National Institute of Standards and Technology (NIST). Sensors are independent and produce
“percent of reading” accuracy. Changing the full scale does not change the accuracy of the device. Factory default out­put scaling for analog GTC116 and GTM116 transmitters can be changed using setup menus of Appendix B.

Changing the LCD Display from Volumetric Flow CFM to Velocity FPM

The GTx116 transmitter is shipped from the factory to indicate volumetric flow. To display velocity in FPM, enter the
SETUP menu and in the DISPLAY submenu, change the “*LCD UM=ACFM” to “*LCD UM=AFPM”. Changing the LCD dis­play units will not affect the analog output signal.

Converting the Analog Output Signal from FPM to CFM

The GTx116 transmitter is shipped from the factory with analog output “OUTPUT 1” set to indicate velocity in AFPM. To
automatically convert this analog velocity output to volumetric flow (ACFM), simply set the *AO1 UM from AFPM (default)
to ACFM in the SETUP menu. If you wish to manually convert the velocity output to volumetric flow (ACFM), simply multi­ply the indicated output velocity (in FPM) by the free area of the air flow probe installation location. Refer also to Table 6
for a complete listing of conversions for each of the analog outputs of the GTx116. The AO1 full scale analog output (OUT­PUT1 ) value is determined by the AO1 FS setting within the SETUP menu.

Locking the Configuration Settings

The GTx116 transmitter configuration settings can be locked at one of three security levels within the SECURITY sub­menu using the LOCK SEC= item.

When LOW security level is selected (LOCK SEC=LOW) the last 4 digits of the board serial number are automatically
assigned as the lock code. To see the board serial number, navigate to DIAGNOSTICS menu in SERIAL NUMBERS item.

When the MED security level is selected (LOCK SEC=MED) the user enters and confirms a security code. In the event that
this code is lost/misplaced, EBTRON can provide a key that is unique to the transmitter to unlock it. Contact EBTRON cus­tomer service for this code.

When the HIGH security level is selected (LOCK SEC=HIGH) the user enters and confirms a security code. In the event
that this code is lost/misplaced, the transmitter must be returned to the factory in order to unlock it.

When LOCK SEC=HIGH is selected, the user defined setting can only be changed after entering the user defined code. STORE THE
LOCK CODE IN A SAFE LOCATION! For security reasons, the HIGH level lock code can only be reset by returning the transmitter to
the factory.

14

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VIEWING SENSOR DATA

Viewing Sensor Data on the Local LCD Display

Airflow and temperature of individual sensors can be displayed on the local LCD display by entering the Diagnostic Menu.
Simultaneously depress the up ↑ and down ↓ arrows to enter the GTx116 SETUP menu, and then navigate to the
Diagnostic submenu.

Viewing Sensor Data over BACnet or Modbus Networks or through the EB-Link Reader

Airflow and temperature of individual sensors can be read across BACnet or Modbus networks, or downloaded directly
to an EB‐Link Reader if the infra‐red EB‐Link option has been installed. Refer to the following Sensor Addressing and
Probe Positioning paragraph for the suggested probe installation configuration. Tables 5 and 6 provide BACnet objects
and register addressing information for individual sensor data.

Sensor Addressing and Probe Positioning

Sensors are automatically addressed after power is applied to the transmitter as follows:

The probe connected to the left most connector, C1, is defined as probe 1. The sensor opposite the cable end of the
probe is defined as sensor 1 when viewing individual sensor data. Refer to Figure 10 below for additional detail.

Note that if only average data is desired, the mounting position of the probes is not critical. When a probe is disconnect­ed and then plugged in to a different port, the transmitter will re‐discover it within 15 seconds and make any necessary
addressing adjustments.

To standardize installation and decoding of data, particularly when using the EB‐Link Reader product, EBTRON recom­mends a left to right (or top to bottom in vertical applications) sensor probe mounting convention as detailed in the sep­arate sensor probe installation instructions.

Figure 10. Example of Probe Mounting and Connector Locations for Proper Decoding of Traverse and EB-Link Data

Cabl

Cabling and Transmitter detail is

typical and is

the same for all configurations.

C1 C2 C3 C4

GTx116 Transmitter Bottom View

Showing Connectors

Probe# 1 (To GTx116 C1)

Probe# 2 (To GTx116 C2)

Probe# 3 (To GTx116 C3)

Probe# 4 (To GTx116 C4)

Upstream View

(airflow into page)

15

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Table 5. GTx116 Alarm Types and Notifications

GTC/GTM116 - ALARM FEATURES

Analog output AO2 (OUT2) can be assigned to function as an alarm output. The AO2 alarm output can be assigned in the
SETUP menu to operate as an average alarm (A02 ASGN=ALRM) or as a trouble alarm (AO2 ASGN=TRBL) for monitoring
the status of the transmitter and sensors. The AO2 ASGN= setting is located in the ANALOG OUT submenu of the SETUP
menu. The transmitter LCD display will indicate the Alarm status for 2 seconds, and will cycle through any other alarms
if multiple alarm events are active for 2 seconds each, and then display the current actual flow for 2 seconds. Detailed
set up of the Alarm features is shown in the Setup menu.

Average Alarm (AO2 ASGN=ALRM)

AO2 output is assigned as an average airflow alarm output. Useful for applications where a low flow alarm, a high flow
alarm for operation outside of a defined range (setpoint and tolerance) is required.

Trouble Alarm (AO2 ASGN=TRBL)

AO2 output is assigned as a transmitter trouble alarm indicating a fault within the transmitter or a sensor of the airflow
measurement system. The transmitter LCD will indicate a trouble code and a brief description of the trouble. Contact
EBTRON customer service for additional information or assistance with trouble codes.

No Fault (NO FAULT=HI)

When AO2 output is assigned as an alarm, this setting configures the normal output condition to be HI or LO relative to
the full scale analog output level selected when no fault condition exists.

Alarm Indications

Table 6 details the alarm types, LCD indications and AO2 alarm output indication. User can select either or both of the
two Average Alarms or the Trouble Alarm.

Low Alarm - “LO ALRM= ON”

The Low Alarm is activated when the average airflow falls to a defined level below the SETPNT= value. The defined level
is equal to the SETPNT= value minus the calculated value of (TOL= value * SETPNT= value). Once active, the alarm can
be cleared when the average airflow rises above the set point minus calculated tolerance value.

High Alarm - “HI ALRM= ON”

The High Alarm is activated when the average airflow rises above a selected set point (SETPNT=) + tolerance (TOL=)
value. Once active, the alarm can be cleared when the average airflow falls below the set point + tolerance value.

Trouble Alarm - “AO2 ASGN=TRBL”

The Trouble alarm provides trouble codes useful for isolating setup issues or problems within the transmitter or
sensors. The transmitter LCD will indicate TROUBLE! regardless of whether AO2 is assigned to TRBLE. The
Diagnostic submenu can be engaged for the error code and a brief description of the trouble. Contact EBTRON
customer service for information on troubleshooting using the Trouble error codes.

16

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ALARM OUTPUT

ASSIGNMENT TYPE

LOCAL LCD DISPLAY OF ALARM TYPE

AND NOTIFICATIO

N

NALOG OUTPUT 2 ALARM

INDICATION

NETWORK

LARM INDICATIO

N

**LOW ALARM**

(Average Alarm)

Display alternates between **LOW
ALARM** (then any other alarms) and

actual reading for 2 seconds each.

**HIGH ALARM**

(Average Alarm)

Display alternates between **HIGH
ALARM** (then any other alarms) and

actual reading for 2 seconds each.

TROUBLE !

(Trouble Alarm)

Display indicates TROUBLE !
(Refer to DIAGNOSTIC menu to obtain a
brief description of the error and any other
alarms).

On alarm or trouble, OUT2 is
active high (or active low)
relative to the full scale
maximum (or minimum)
analog value as determined
by the SETUP Menu “NO
FAULT=” selection. Individual
sensor velocities can be
viewed using the Diagnostics
submenu.

Alarm Status is available at
BACnet Objects and Modbus
Registers. Refer to BACnet
Objects List and Modbus
Register Map for additional
detail.

A

A

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®

Table 6. GTC/GTM116 Converting Analog Output Values to Airflow/Temperature

TO CONVERT TO

Airflow (FPM, MPS) Output Voltage/10 x FS1 Output Voltage/5 x FS1 (Output Current-4)/16 x FS1

Airflow (CFM) Area (SQF) x Output/10 x FS1 Area (SQF) x Output/5 x FS1 Area (SQF) x (Output - 4)/16 x FS1

Airflow (LPS) Area (SQM) x Output/10 x FS1 x 1000 Area (SQM) x Output/5 x FS1 x 1000 Area (SQM) x (Output - 4)/16 x FS1 x 1000

TO CONVERT TO

Airflow (CFM, LPS) Output Voltage/10 x FS1 Output Voltage/5 x FS1 (Output Current - 4)/16 x FS1

TO CONVERT TO

Temp (°F,°C) Output Voltage/10 x (FS2-MS2) +MS2 Output Voltage/5 x (FS2-MS2) +MS2 (Output Current - 4)/16 x (FS2-MS2) +MS2

NOTES:
FS1 is AO1 full scale analog output value from ANALOG OUT MENU.
FS2 is AO2 full scale analog output value from ANALOG OUT MENU.
MS2 is AO2 minimum scale analog output value from ANALOG OUT MENU.

0-10 VDC 0-5 VDC 4-20 mA

ANALOG OUTPUT SCALING AND TYPE

0-10 VDC 0-5 VDC 4-20 mA

When OUTPUT 2 is Configured as Temperature (°F,°C):

ANALOG OUTPUT SCALING AND TYPE

0-10 VDC 0-5 VDC 4-20 mA

ANALOG OUTPUT SCALING AND TYPE

When OUTPUT 1 is Configured as Linear Airflow (FPM, MPS):

When OUTPUT 1 is Configured as Volumetric Airflow (CFM, LPS):

GTC/GTM116 - ANALOG OUTPUT TYPE SELECTION AND SETUP

The analog output signal type at OUT1 (airflow) and OUT2 (temperature/alarm) can be set for mA or VDC output by set­ting switches SW1/SW2 (Figure 8) and by selecting the 4-20mA, 0-5 VDC or 0-10VDC ranges in ANALOG OUT sub menu
options *AO1 RNGE= / *AO2 RNGE= settings (Appendix B). The transmitter is shipped from the factory with SW1/SW2
and Setup menu options *AO1 RNGE= and *AO2 RNGE= set for 4-20mA.

GTC/GTM116 - Converting Analog Output Signal Values to Airflow and Temperature

Table 7 lists specific conversion equations for analog voltage or current output options.

GTC/GTM116 - OUTPUT TEST - Sending a Test Output Signal to the Host Control System

A test output signal between 0 and 100% of the full scale output (4‐20 mA or 0‐5VDC/0‐10VDC) can be provided by the
GTC/GTM116 transmitter to verify proper conversion of the output signals from the transmitter at the host control sys­tem. To set a fixed output signal for airflow and temperature, navigate to the OUTPUT TEST submenu in the TOOLS menu.
OUT1 and OUT2 tests are independently accessed, and the output will maintain the % selected until the “ESC” button is
pressed and normal operation resumes.

17

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GTC116 - TRANSMITTER SETUP FOR RS-485 NETWORK OPERATION

For RS-485 operation, network connections are made on the GTC116 Combination board as shown in Figure 8, and set
up is as follows. Network protocol, MS/TP address, device instance number and baud rate options are all selected with­in the NETWORK section of SETUP menu shown in Appendix B.

GTC116 - RS-485 Network Options and Communications Menu Settings

The transmitter is shipped from the factory with the protocol set for BACnet MS/TP Master, address 2, MS/TP Device ID
2, Baud rate of 76,800 and no termination. Initial RS-485 communications settings are accomplished within the
GTC116 NETWORK sub menu shown in Appendix B. Termination is set up by the TERM DIP switch SW3 located on the
Combination card shown in Figure 8.

GTC116 - Setting Transmitter Termination for RS-485 Network

The GTC116 is shipped with the Termination switch set for No termination, which is the recommended setting for devices
installed on the network bus anywhere EXCEPT at the ends of the bus/segment. EBTRON recommends the following
termination strategy for devices connected at the ends of the network bus/segment:

NOTE:
The device at one end of the network should be terminated with “End of Line” (or 120 ohm standard) termination,
and the device at the other end should be terminated with “Fail Safe Bias” termination. This method will provide
proper network termination and will ensure that the bus is in a known state during idle-line conditions (when no
devices are driving the bus). EBTRON GTC116 transmitters include all three termination options for “No
Termination”, “End of Line” (standard 120 ohm) or “Fail-safe Bias” (recommended at one end of the bus).
Termination is selected by setting the TERMINATION DIP switch SW3” (Figure 8) on the Combination board.

GTC116 - Setting RS-485 Network Protocol

Transmitter protocol can be set for BACnet MS/TP or MODBUS as shown in the NETWORK submenu (Appendix B). Tables
8 and 9 list the specific features of each protocol.

GTC116 - Setting Transmitter Address

The GTC116 is factory set to an address of 2. Each transmitter must be assigned a unique address between 0 and 127
for BACnet or 1 and 247 for Modbus prior to connecting it to the network. Set the address in the NETWORK submenu
(Appendix B).

GTC116 - Setting Baud Rate

The GTC116 transmitter default baud rate for BACnet MS/TP is 76,800 and for MODBUS is 19,200. Baud rate can be
configured in the NETWORK sub menu (Appendix B).

GTC116 - Setting Modbus Parity

When using Modbus communications protocol, Parity can be changed in the NETWORK submenu. Parity can be set for
Even (default), Odd, None 1 (with 1 stop bit), or None 2 (with 2 stop bits).

GTC116 - Setting BACnet Device Instance Number

When using BACnet communications protocol, the factory default Device Instance Number is 2. Device Instance Number
can be set as shown in the NETWORK submenu. Device Instance Number can also be changed to any number between
0 and 4,194,302 by writing to the Device Object's Object Identifier Property over the network.

GTC116 - Resetting Communications Options to Factory Default Values

Communications options can be reset to factory default values (asterisk) * values using the GTC116 RESET NET menu
option as shown in Appendix B.

Check the network/network segment to ensure that only one device is terminated with either of these methods.
If multiple devices are terminated as described above, network segment operation will be adversely affected.

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GTM116 - TRANSMITTER SETUP FOR ETHERNET NETWORK OPERATION

An RJ45 network connector is provided on the GTM116 Ethernet/Analog combination board as shown in Figure 9. The
user can manually select network protocol (BACnet/IP or BACnet Ethernet - MODBUS TCP is always enabled), IP address
and device instance number, or can set the GTM116 to automatically configure itself when used on a network/segment
with a DHCP server. By default, the DHCP setting is OFF (*DHCP=OFF) for manual device configuration, with BACnet IP
protocol (BAC MODE=IP), a static IP address of 10.0.0.100, a subnet mask of 255.255.255.0, and with gateway set for

10.0.0.10. These values can be changed within the NETWORK sub menu (Appendix B) as described below.

When IP configuration is complete, confirm IP communications locally by “pinging" the assigned GTM116 IP address and
observing 5 rapid blinks of the ACTIVITY LED (Figure 9).

GTM116 - Selecting Static or Dynamic IP Settings

For automated device configuration on a network/segment with a properly operating DHCP server, set *DHCP=ON as
shown in Appendix B. Then, set *BAC MODE= for BACnet/IP (factory default) or BACnet Ethernet operation, and set *DI=
device instance number (factory default=2) as described below. No additional device configuration is required.

For manual device configuration of the GTM116, set menu item *DHCP=OFF (factory default) as shown in Appendix B.
When manually changing IP settings (*DHCP=OFF), the display will blink the 3-digit address segment that is under
change. Change the blinking segment by pressing the UP or DOWN buttons to arrive at the desired segment setting.
Depress the ENTER key to set this segment and to move the blinking cursor to the next (right) segment. Repeat this until
the last segment has been selected, and then depress ENTER to store the new address setting.

GTM116 - Setting Ethernet Transmitter IP Address

The GTM116 is factory set with an IP address of 10.0.0.100. Each transmitter must be assigned a unique address on
the network/segment it is connected to. To change the IP address, navigate to the *IP=10.0.0 menu item as shown in
Appendix B and set segments as previously described. (See note above regarding *DHCP=OFF).

GTM116 - Setting Subnet Mask

To change this value, navigate to the *MASK=255.2... menu item as shown in Appendix B, and set new segment values
as previously described. (See note above regarding *DHCP=OFF).

GTM116 - Setting Gateway IP

To change this value, navigate to the *GATE=10.0.0... menu item as shown in Appendix B, and set new segment values
as previously described. (See note above regarding *DHCP=OFF).

19

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GTM116 - Setting BACnet Protocol Mode

The GTM116 is factory set with *BAC MODE=IP for BACnet IP protocol operation. This menu item can be changed to
*BAC MODE=ETH for BACnet Ethernet protocol as shown in Appendix B. Tables 7, 8 and 9 provide details of TCP/IP,
BACnet Objects and Modbus Register Maps respectively. Note that Modbus IP is always enabled regardless of *BAC
MODE setting.

NOTE:
For BACnet IP operation, use port 47808. For Modbus TCP operation, use port 502. Modbus IP is always enabled regard­less of the *BAC MODE setting.

GTM116 - Setting Device Instance Number

The GTM116 is factory set with a Device Instance Number of 2 (*DI=2). The Device Instance Number can be set to any
value between 0 and 4194302 as shown in Appendix B. The Device Instance Number can also be changed by writing to
the Device Object's Object Identifier Property over the network.

GTM116 - Resetting Communications Options to Factory Default Values

Communications options can be reset to factory default values (asterisk) * values using the GTM116 RESET NET menu
option as shown in Appendix B.

GTM116 - ETHERNET WIRING CONNECTIONS

Ensure that the transmitter network settings have been properly set up as previously described. Ensure that the power
switch is in the “OFF” position. Connect the 10/100 base-T ethernet connection (RJ45) to the female connector on the
output card as shown in Figure 9.

Tables 8 and 9 list the specific values provided for BACnet and Modbus communication protocols.

TCP/IP

http://10.0.0.100

(or your custom IP address)

Table 7. GTM116 TCP/IP Example

GTM Data

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Table 9. GTx116 Modbus Register Map

Table 8. GTx116 BACnet Object List

BACnet MS/TP

Modbus

Analog Inputs

TType, ID

Default

Units

Device

x

= C for RS-485

x

= M for Ethernet

AI, 1 CFM

AI, 2 °F

AI, 3

GT

x

116

Average Flow

Avgerage Temperature

Alarm Status

Name

Type, ID

Analog Values

AV, 1 Area sq.ft.

AV, 2 Traverse Data Status

0=None, 1=Flow,
2=Temp, 3=Both

AV, 3 Flow Traverse FPM

AV, 18 Flow Traverse FPM

AV, 19 Temperature Traverse °F

AV, 34 Temperature Traverse °F

NNotes:

1. Flow and Temp traverse must be enabled through AV2.

2. User Executed Services Supported:
Subscribe COV, Read Property, Write Property,
Device Communication Control, Who-Is.

x

Name

FFunction Address Type

Units Description Range/Value

2 10001 boolean Trouble Status 0:OK, 1:Trbl

4 30001-30002 float FPM Average Airflow 0 to 15,000

4 30003-30004 float °F Average Temperature -20 to 160

4 30005 word Number of Inserts 0 to 16

4 30007 word Alarm Status

1: High Alarm
2: Low Alarm

4 30008 word Connector C1 Sensors

4 30009 word Connector C2 Sensors

4 30010 word Connector C3 Sensors

4 30011 word Connector C4 Sensors

0 to 8

30012-30043 Airflow Flow Traverse

30012-30013 Insert 1 Flow

30042-30043 Insert 16 Flow

30044-30075 Temperature Traverse

30044-30045 Insert 1 Temp

30074-30075 Insert 16 Temp

4 30076-30077 float Sq.Ft. Area

4 300202 word Float word order

°F

4

4

float 0 to 15,000

-20 to 160float

FPM

NOTE: For GTM116 BACnet IP operation, use port 47808.

NOTE:

For GTM116 Modbus
operation, use port 502.
Modbus IP is always enabled
regardless of *BAC MODE
setting.

Modbus RTU

for GTC116

Modbus TCP

for GTM116

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0: No alarm

3: Both

0 to 8

0 to 8

0 to 8

0 to 100

0: high word first;
1: low word first

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GTL116 - LONWORKS TRANSMITTER SETUP

The GTL116 includes a full featured LonWorks compatible interface. The EBTRON LonWorks output card (part number
800-5030) plugs directly onto the GTL116 main circuit board as shown in Figure 11. It includes a high speed FTT-10A,
78k baud Free Topology transceiver interface that is relatively insensitive to network wiring topology. The GTL116 may
be pre-configured using the EBTRON_116.XIF file available for download at:

http://www.ebtron.com/downloads/EBTRON_116.XIF, or configured at installation via direct LonWorks parameter

upload from the G

TL116 transmitter. A service push-button and LED are provided for standard installation. A “Wink”
LED is provided for easy device identification. An “Activity” LED and separate transmit and receive “TX” and “RX” provide
visual indication of transmitter and communication status. The “Activity” LED normally flashes on for 1 second, off for 1
second when the card is commissioned and online, and remains illuminated constantly if there is an error

To wire the output signal, slide the cover plate up and off of the enclosure. Ensure that the power switch is in the “OFF”
position. Connect network cables to the small, three position output terminal labeled “OUTPUT” on the upper left hand
side of the main circuit board (shown below) at terminals 1 and 2 only.

GTL116 - LONWORKS NETWORK CONNECTIONS

Connect the transmitter output to the LonWorks bus in a "daisy-chain" configuration using Lonworks approved cable. The
transmitter provides an output that is isolated from the main power input. Connect the LonWorks cable at the “OUTPUT”
terminal block as follows:

OUTPUT TERMINAL SIGNAL DESCRIPTION

1 NET+
2 NET-

COM COMMON (NOT USED)

Figure 11. GTL116 LonWorks Transmitter Interior Detail

CAUTION HOT

GTx116 Main

ON

OFF

ESC ENTER

PGM

CONTRAST

24VAC IN

L2 L1

OUTPUT

COM

POWER

REPLACE WITH

1.5 AMP

FAST ACTING ONLY

EBTRON INC.
400-1810 REV. J

U11

U10U9

J6

U4

D4

U1

C1

VR1

J4

L1

Z1

D2

D1

C5

HS2

HS1

VR2

C6

C4

C3

C2

R5

R4

R3

LCD1

R2

J1

F1

J2

J3

SW1

R1

EG1

R26

R25

R24

R23R22

R21

R20

R19

R18

R17

R16

R15

R14

R13

R12

R10

R11

U8U7

U3

U6

U24U23

U22U21

U20U19

U18U17

U16U15

U14U13

U12

R6

R59

R58

R57

R56R55R54R53R52R51R50R49

R48R47

R46R45

R44

R43

R42

R41

R40R39R38R37

R36

R35

R34

R33

R32

R31

R30R29

R28

R27

U5

U2

C9

C8

C12

C11

C7

C22

C21

C20

C19

C18

C17

C16

C15

C13

C10

C14

R9

R8

R72R71R70R7R69R68R67R66R65

R64R63

R62R61

R60

+

+

MH1

D3

C23

J7

J8

XTAL1

TP1

TP9TP8TP7TP6TP5TP4TP3TP2 TP17TP16TP14TP13TP12TP11TP10 TP15

SW5

SW4SW2 SW3

D1

D4

D3

C4

C3

C6

U2

MH1

U1

U3

R1

C5

C2

MH3

C1

EBTRON, INC.

400-1850 REV. E

GTL116 LOut

SERVICE

WINK

YEL

GRN

MH2

C15

C16

U6

C8

R7 R8

D6

SW1

R4

R10R9

R6

D7

D5

C7

J1

XFMR1

SG1 SG2

D2

1

10

1

+

+

1

U4

C11C10

C9

C14

C12

C13

XTAL1

U5

J2

R3R2

R5

1

64

33

32

1

1

10

1 - (connect to network)

2 - (connect to network)

COM - Not used

LonWorks Output Card
P.N. 800-5030

LCD Display

Power Switch

TX LED Green

RX LED Green

Service LED Yellow

Service Button

Wink LED Green

Transmitter Status LED.

(Green 1 second flash normal;

2 second flash for fault)

Activity LED Red

22

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GTL116 - LONWORKS INTERFACE

Introduction

The Ebtron LonWorks interface adapter is designed to provide an output capability for connection to an Echelon
LonWorks based network. Two basic function blocks are provided. These include a node object and a gtx116 function
block.

The node object is used for overhead activities on the LonWorks bus. This object is of little interest to the end user.

The gtx116 function block contains a set of network variables and configuration properties that allow the end user to
monitor various parameters related to airflow, pressure, and temperature that are generated by the transmitter.

Basic Description

The LonWorks protocol is based on "network variable objects"("nvo"). Each device on the network communicates with
other devices by "connecting" to the variables of the device it wishes to monitor. These variables consist primarily of pre­defined types that are part of the network specification.

Additionally, a special class of network properties is defined to allow the configuration of various parameters within a
device. These are intended to control the basic operation of a device.

All network variables are defined in terms of "SNVT_xxx". SNVT is an acronym for Standard Network Variable Type. "xxx"
is a descriptive phrase that relates to the units used by the parameter represented by the variable. All of the variables
described below are always visible on the network; however, some variables are meaningful only with certain types of
sensors attached to the transmitter. Tables 10 through 16 describe each of the variables used and the configuration
properties for each.

All configuration properties are defined in terms of "SCPTxxx". SCPT is an acronym for Standard Configuration Property
Type. There are configuration properties that apply to multiple objects, but may not be listed directly under them when
viewed on the network. Check the "applies to" tag in the description for the configuration property in the following sec­tions.

NOTE

Units shown are default values and, depending on software used, may be set automatically by location.

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GTL116 - VELOCITY AND FLOW VARIABLES CONFIGURATION

This section details the air flow and air velocity variables and how the configuration properties relate to them.

Velocity and Flow Variables

nvoAirVel (SNVT_speed_mil - Air Velocity)

This variable provides simple linear airflow in meters/second.

nvoAirFlow (SNVT_flow - Airflow)

This variable provides volumetric airflow in liters/second. For this variable to be meaningful, the ductArea configuration
property must be set.

nvoAirFlowFl (SNVT_flow_f - Airflow Float)

This variable provides volumetric airflow in liters/second. For this variable to be meaningful the ductArea configuration
property must be set.

Velocity and Flow Configuration Properties

nvoAirVel (SCPTmaxSendTime - Maximum Time Between Updates)

This configuration property sets the maximum time to elapse between updates to the network for velocity and
flow to occur.

nvoAirVel (SCPTminSendTime - Minimum Time Before Updates)

This configuration property sets the minimum time to elapse before an update to the network for velocity and flow may
be sent. This configuration property takes priority over maxSendTime and sndDelta.

nvoAirVel (SCPTsndDelta - Minimum Change for Update)

This configuration property sets the minimum change in velocity that will cause an update of flow and velocity to the net­work. The change is only checked for in velocity, and when the minimum is reached updates will occur for nvoVel,
nvoFlow, and nvoFlowFl.

nvoAirFlow (SCPTductArea - Duct Area for Air Flow Calculation)

This configuration property sets the duct area to be used in flow calculations. Note that this variable must be set to a
non-zero value to get flow information.

Variable Name Variable Type Measurement Type Category

Type

Resolution

Units

nvoAirVel SNVT_speed_mil Linear Velocity Unsigned Long 0.001 Meters/second

nvoAirFlow SNVT_flow Flow Volume Unsigned Long 1 Liters/sec

nvoAirFlowFl SNVT_flow_f Flow Volume Floating Point n/a Liters/sec

Air Flow Sensor Objects

nvoAirVel SCPTmaxSendTime Time Signed Long 0.1 Seconds

nvoAirVel SCPTminSendTime Time Signed Long 0.1 Seconds

nvoAirVel SCPTminDelta Linear Velocity Unsigned Long 0.001 Meters/second

nvoAirFlow SCPTductArea Area Unsigned Long 0.0002 Square Meters

Air Flow Sensor Configuration Properties

For the “nvoAirFlow” and “nvoAirFlowFl” variables to be meaningful, the ductArea configuration property must be set.

Table 11. GTL116 LonWorks Node Velocity and Flow Configuration Properties

Table 10. GTL116 LonWorks Node Velocity and Flow Variables

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GTL116 - AREA INPUT VARIABLE

This section details the network input variable area.

Area Input Variable

nviArea (SNVT_area – Duct Area for Air Flow Calculation)

This network input sets the duct area to be used in flow calculations. This variable is essentially a copy of
nvoAirFlow:SCPTductArea; only one of these inputs needs to be configured before using nvoAirFlow or nvoAirFlowFl.

GTL116 - PRESSURE VARIABLES AND CONFIGURATION

This section details the pressure variables and how the configuration properties relate to them.

Pressure Variables

nvoPrecisePres (SNVT_press_p - Airflow Pressure)

This variable provides air pressure in Pascal. For this variable to be meaningful a bleed sensor must be attached to the
transmitter.

nvoFloatPres (SNVT_press_f - Airflow Pressure Float)

This variable provides air pressure in Pascal. For this variable to be meaningful a bleed sensor must be attached to the
transmitter.

Pressure Configuration Properties

nvoPrecisePres (SCPTmaxSendTime - Maximum Time Between Updates)

This configuration property sets the maximum time to elapse between updates to the network for pressure to occur.

nvoPrecisePres (SCPTminSendTime - Minimum Time Before Updates)

This configuration property sets the minimum time to elapse before an update to the network for pressure may be sent.
This configuration property takes priority over maxSendTime and sndDelta.

nvoPrecisePres (SCPTsndDelta - Minimum Change for Update)

This configuration property sets the minimum change in pressure that will cause an update for pressure to the network.
When this change is met both nvoPrecisePres and nvoFloatPres will be updated on the network.

Variable Name SNVT Measurement Type Category

Type

Resolution

Units

nvoPrecisePres SNVT_press_p Pressure Signed Long 0.00001 PA

nvoFloatPres SNVT_press_f Pressure Floating Point n/a PA

Dynamic Pressure Sensor Object

nvoPrecisePres SCPTmaxSendTime Time Signed Long 0.1 Seconds

nvoPrecisePres SCPTminSendTime Time Signed Long 0.1 Seconds

nvoPrecisePres SCPTsndDelta Pressure Signed Long 0.0001 PA

Dynamic Pressure Sensor Configuration Properties

Table 14. GTL116 LonWorks Node Pressure Configuration

Table 13. GTL116 LonWorks Node Pressure Variables

Variable Name Variable Type Measurement Type Category

Type

Resolution

Units

nviArea SNVT_area

Area Unsigned Long 0.0002 Square Meters

Area Object

Table 12. GTL116 LonWorks Area Input Variable

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Temperature Variables and Configuration Properties

This section details the temperature variable and how the configuration properties that relate to it.

nvoTemp (SNVT_temp_p - Temperature Variable)

This network variable provides temperature in degrees Celsius.

Temperature Configuration Properties

nvoTemp (SCPTmaxSendTime - Maximum Time Between Updates)

This configuration property sets the maximum time to elapse between updates to the network for temperature to occur.

nvoTemp (SCPTminDeltaTemp - Minimum Change for Update)

This configuration property sets the minimum change in temperature that will cause an update of nvoTemp to the net­work.

nvoTemp (SCPTminSendTime - Minimum Time Before Updates)

This configuration property sets the minimum time to elapse before an update to the network for temperature may be
sent. This configuration property takes priority over maxSendTime and minDeltaTemp.

GTL116 - DEFAULT DELTA VALUES

The default Delta values determine when updates are sent from the transmitter to the network. The Delta values are set
with a large factory default value to prevent any undesired messages from being sent to the network. Refer to the
preceding paragraphs for description and configuration of the Delta values.

nvoTemp SCPTmaxSendTime Time Signed Long 0.1 Seconds

nvoTemp SCPTminDeltaTemp Temperature Signed Long 0.001 Degrees C

nvoTemp SCPTminSendTime Time Signed Long 0.01 Seconds

Temperature Sensor Configuration Properties

Table 16. GTL116 LonWorks Node Temperature Variable

Variable Name SNVT Measurement Type Category

Type

Resolution

Units

nvoTemp SNVT_temp_p Temperature Signed Long 0.01 Degrees C

Temperature Sensor Object

Table 15. GTL116 LonWorks Node Temperature Variable

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EB-Link WIRELESS INFRARED COMMUNICATIONS OPTION

The EB-Link wireless infrared communications option is ideal for air balance contractors, engineers, building owners
and/or contractors who desire fast and accurate measurement without additional interfacing. Individual and average
sensor airflow(s) and temperature(s) from GTx116 transmitters equipped with the EB-Link option can be instantly trans-
ferred to the new EB-Link Reader model ELR-1 or to a Palm®or Microsoft®Windows Mobile®operating system PDA. This
method reduces the data acquisition time and sampling error inherent with hand held measurements. The data can then
be transferred to your PC for review, update or analysis.

In addition, a Setup-Upload feature (available only with the PDA software version) permits rapid transfer of preset trans­mitter setup configuration to another EB-Link equipped GTx116 transmitter. This is especially useful when multiple trans­mitters are to be set up or modified.

Real-time duct flow/temperature traverses can be accomplished quickly and easily using the GTx116 transmitter
equipped with the EB-Link option. Individual airflow and temperature data can be returned directly to your EB-Link
Reader or PDA (using Palm®or Microsoft®Windows Mobile®operating system). The data can also be returned over
BACnet or Modbus when probes are connected to a type GTC116/GTM116 networked transmitter.

This innovative feature is ideal for balancers and commissioning agents that desire “on-the-fly” airflow and temperature
traverses. The advantages of using permanently installed GP1 probes include nearly instantaneous traverse data (no
sampling error over time), accurate and repeatable measurement and simple report generation using the Microsoft

®

Excel

®

spreadsheet provided by EBTRON. Performing duct traverses with permanently mounted EBTRON airflow probes
eliminates the requirement to make additional sampling holes in the duct, and reduces the need to carry around the job
site cumbersome equipment and ladders to accomplish them.

EB-Link Card Installation

The EB-Link card must be installed on the GTx116 main board in order to access sensor data with your PDA. If the EB-
Link card is ordered separately from the transmitter, it should be installed after the transmitter is mounted.

To install the EB-Link option card, slide the cover up and off of the transmitter enclosure. Turn the power switch, SW1,
to the “OFF” position on the transmitter main circuit board. Observe ESD precautions when handling and installing the
EB-Link card. Touch a grounded object, such as a metal duct, before removing the EB-Link card from the anti-static pack-
age. Remove the EB-Link card from the anti-static package, being careful not to touch exposed components or circuit
board traces (hold the card by the edges as indicated on left frame of Figure 12). With the components facing in towards
the center of the main circuit board, carefully plug the EB-Link card into the header connector labeled J5 on the right
hand side of the transmitter just below the LCD display (center frame, Figure 12). Do not press on any components. The
card should stand on its own when properly installed (right frame of Figure 12).

Figure 12. EB-Link Installation Detail

CAUTION: Observe all electrostatic Discharge (ESD) handling precautions. Do not touch internal components.
Failure to observe ESD precautions can cause damage to components.

CAUTION: Turn the transmitter “POWER” switch to the “OFF” position before installing the

EB-Link

card. Failure

to do so can cause damage to the

EB-Link

card and/or the transmitter.

27

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Obtaining and Installing EB-Link Software

EB-Link software can be downloaded free of charge at:

http://www.ebtron.com/support_downloads.htm.

Ver

sions are available for the EB-Link Reader, or for PDAs (for either the Palm

®

or
Microsoft®Windows Mobile®operating systems) as shown in Figure 13. Figure 14
shows the EB-Link in use.

The software includes all of the files required for operation of the EB-Link Reader or for
PDAs as well as a Microsoft®Excel® spreadsheet for converting the PDA files to a Test
and Balance report.

EB-Link Reader Software

The EB-Link Reader software is designed for operation on Windows XP (or later) oper­ating systems and permits file management and time synchronization for the EB-Link
Reader.

The latest version of the EB-Link Reader software, as well as installation, operation
and descriptions of all EB-Link Reader functions are contained in the EB-Link Reader
Technical Documentation available at the following link:

http://www.ebtron.com/Web_Pdfs/SPSync/Accessory%20Products/EB­LINK%20READER/QSG-EBR-1000.pdf.

EB-Link Software for PDA Devices

The EB-Link Software for PDA Devices is designed for operation with PDA devices using
the Palm®or Microsoft®Windows Mobile®operating systems. The software includes a
Microsoft®Excel®spreadsheet that allows for the pre-configuration, review or modifica­tion of GTx116 transmitter setup parameters.

The latest version of the software, as well as installation and descriptions of all EB-Link
functions are contained in the readme.txt file that is provided with the download.

Real-time duct traverses can be accomplished quickly and easily using the GTx116
transmitter equipped with the EB-Link option. Individual airflow and temperature data
can be returned directly to your PDA (Palm®or Microsoft®Windows Mobile®operating
system). Data can also be returned over BACnet or Modbus when probes are connect­ed to a GTC116/GTM116 transmitter.

Real Time Duct Traverses Using EB-Link

Simply slide the GTx116 cover up and off of the GTx116 transmitter enclosure and
point your EB-Link Reader or PDA to the EB-Link sensor located just to the right and
below the transmitter LCD display as shown in Figure 14 (note: the EB-Link card option
must be installed). The acquisition of data takes less than 10 seconds to complete.
After acquiring data, you can display individual or average airflow and/or temperature
data on your EB-Link Reader or PDA. Saved data (stored as a comma separated value
CSV file) can also be downloaded to your PC for creation of individual test and balance
reports using the software of your choice, or with the Microsoft

®

Excel®spreadsheet
that EBTRON has included with the PDA software. Note that the traverse sensor data
is averaged to provide more stable readings.

Note also that on rectangular ducts, the EBTRON Excel

®

balance report will always
show the traverse data starting at the top left position of the duct when viewing from
upstream of the flow station, regardless of the orientation of the probes, when the
probes are installed as indicated in the configuration diagrams of Figure 10. On
round/oval ducts, the balance report will always show traverse data in columns, start­ing with probe number one.

If traverse data is desired, ensure that probes are installed using the mounting convention specified in Figure 10. Proper instal­lation simplifies sensor location decoding during data analysis.

NOTE

Figure 14. Typical EB-Link

Data Acquisition

Figure 13. EB-Link Reader

and PDA Devices

EB-Link PDA

Communication Detail

EB-Link Reader

Communication Detail

EB-Link and PDA

EB-Link Reader

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FIELD ADJUSTMENTS

ALTITUDE CORRECTION ADJUSTMENT

The Altitude Correction Adjustment allows for correction of airflow readings at the installed site altitude and more pre­cise readings regardless on installed altitude. Refer to the SETUP MENU of Appendix B for the *ALT= menu item, and

set this value to the installation altitude. This adjustment is only necessary when AIRFLOW=ACT.

ADJUSTING THE LOW LIMIT CUTOFF

The low limit cutoff forces the output signal for the airflow rate to zero whenever the airflow rate calculated falls below
the specified Low Limit value. This feature is useful on outside air intakes that often indicate false airflow rates, induced
by transient wind gusts or when the intake damper is closed and there is no net flow across the damper. Readings of
100 FPM or more are not uncommon on many outside air intake applications when the intake damper is closed and are
a result of air movement in the intake plenum (not a malfunction in the airflow measuring device). Setting the low limit
to a value significantly below the control setpoint and higher than the threshold flow for false wind readings simplifies
control and interpretation of the airflow rate signal on many applications.

To set the low limit cutoff, enter the Setup menu and set “*LLIMIT={desired value in FPM (MPS in SI units)}” as shown
in Appendix B.

FACTORY CALIBRATION ADJUSTMENTS

The factory calibration should not require adjustment if the sensor probes are installed in accordance with published
installation guidelines. However, some installations may not meet placement guidelines or commissioning requirements
may dictate field adjustment. Field adjustment may improve the “installed accuracy” of GTx116 systems when determin­ing volumetric flow rates. Only the Output 1 signal, airflow rate, can be adjusted. Ensure that the reference device and
technique used to determine the airflow rate in the field are suitable for such measurement. Select a location that is
acceptable for the device being used as the reference, recognizing that this may not be the same location where the
EBTRON airflow station is installed. The inherent accuracy of field measurement will not be better than ±5% of reading
and can often exceed ±10%. Do not adjust the output of the GTx116 if the difference between the transmitter and the
field measurement is less than 10%.

Field Adjustment Wizard - AUTOMATED FIELD ADJUSTMENT

Overview of the Field Adjustment Wizard

The simple to use Field Adjustment Wizard provides a one or two point automated menu driven field adjustment to fac­tory calibration of the OUTPUT 1 airflow rate signal.

Engaging and Using the Field Adjustment Wizard

Use Appendix B to navigate to the FIELD ADJUST submenu. Appendix B provides details of the FIELD ADJUST menu and
how to use it in applications for one or two point automated field adjustment. If you wish to disable the FIELD ADJUST
setting, navigate to the ADJUSTMENTS submenu and set FLOW ADJ=OFF.

MANUAL ADJUSTMENT OF FACTORY OFFSET/GAIN CALIBRATION

If you prefer, you can instead perform a manual adjustment at one or two points. The GTx116 firmware can be adjusted
for Output 1 signal “gain” and “offset”. To adjust the output signal “gain”, the “FLOW ADJ” override must be set to
“*FLOW ADJ=ON” from the Setup Menu. The adjustments affect both the LCD display and output signal. When “*FLOW
ADJ=OFF” is set, adjusting the output signal “offset” and/or “gain” does not affect the transmitter output.

Fluctuations in the airflow output signal are normal.

EBTRON’s

laboratory research indicates that dampening true fluctuations

will result in poor control and a larger dead-band of operation.

29

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Procedure for 1 Point Field Adjustment

Select an airflow rate that represents a valid operating condition for the system. Set fan speed, dampers and VAV boxes
to a fixed speed or position when measurements are taken. Complete the following worksheet to determine the gain set­ting to be set on the transmitter.

1. Enter the setup menu and set “*FLOW ADJ=OFF”. This is the factory default setting and disables any adjust­ments, returning the unit to its original factory calibration.

2. __________ Record the transmitter output by taking the visual reading from the transmitter LCD. Readings can
be taken by the host controls if the output signal conversion has been confirmed. Time averaging the data will
improve field recalibration.

3. __________ Record the reference reading. Make sure that the unit of measure (FPM, CFM) is identical for both
the transmitter and the reference. If the unit of measure is velocity (FPM), make sure that the reference airflow
measurement was corrected for the area where the measurement was taken.

4. __________ Calculate the gain factor (m): m=line 3/line 2.

5. Enter the setup menu and set “*FLOW ADJ=ON”.

6. Set “*GAIN={value calculated in line 4}”.

7. Confirm that “*OFF=0.00”.

8. Press the “ESC” button until you return to the normal operating mode. Field adjustment is complete.

Procedure for 2 Point Field Adjustment

Select the minimum and maximum airflow rate that the airflow station will encounter as a valid operating condi­tion for the system. Set fan speed, dampers and VAV boxes to a fixed speed or position when measurements are
taken. Complete the following worksheet to determine the gain and offset settings to be set on the transmitter.
Measurement units can be in either FPM or CFM, but they need to be the same between transmitter and refer­ence.When using FPM, ensure that area for both measurements is the same.

1. Enter the setup menu and set “*FLOW ADJ=OFF”. This is the factory default setting and disables any adjust­ments, returning the unit to its original factory calibration. OBSERVE AND APPLY MEASUREMENT UNITS FOR CON­SISTENCY BETWEEN TRANSMITTER AND REFERENCE.

2. Set the minimum airflow rate.

3. __________ Record the transmitter airflow rate by taking the visual reading from the transmitter LCD. Readings
can be taken by the host controls if the output signal conversion has been confirmed. Time averaging the data will
improve field recalibration.

4. __________ Record the reference airflow rate. Make sure that the reference airflow measurement was correct­ed for the area where the measurement was taken.

5. Set the maximum airflow rate.

6. __________ Record the transmitter airflow rate.

7. __________ Record the reference airflow rate.

8. __________ Calculate the gain factor (m): m=(line 7 - line 4)/(line 6 - line 3).

9. __________ Calculate the offset factor (b): b=(line 4 - (line 8 x line 3).
If more than 2 points are available, perform a linear regression on the data to determine gain and offset.

10. Enter the setup menu and set “*FLOW ADJ=ON”.

11. Set “*GAIN={value calculated in line 8}”.

12. Set “*OFF={value calculated in line 9}”. Note that OFFSET must be entered in FPM. If measurements were
recorded in CFM then values need to be divided by duct area before entering in transmitter.

13. Press the “ESC” button until you return to the normal operating mode. Field adjustment is complete.

30

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MAINTENANCE

When transmitter and probes are installed in accordance with EBTRON guidelines, instrument difficulties are rare. Issues
may easily be resolved by viewing Diagnostic data from the Diagnostic Menu (Appendix B) and by proceeding through the
following troubleshooting guides (Tables 17 through 21). Customer support is available Monday - Thursday from 8 AM to
5:00 PM, and on Friday from 8AM to 2:30PM ET, at 800-2EBTRON (232.8766). EBTRON Diagnostic Customer Service
forms are available on-line at www.ebtron.com to assist us in accurately diagnosing issues and will greatly expedite their
resolution. A sketch of the installation, along with the control sequence of operations is recommended to help us diag­nose problems. Fax the information to 843.756.1838 before you call, and have it available when speaking with the
Customer Service team. Address all correspondence to the EBTRON Customer Service Department. Additional informa­tion is also available from your local EBTRON representative.

STANDARD LIMITED PARTS WARRANTY

If any EBTRON product fails within 36 months from shipment, EBTRON will repair/replace the device free of charge as
described in the company’s warranty contained in EBTRON’s TERMS AND CONDITIONS OF SALE. Defective equipment
shall be shipped back to EBTRON, freight pre-paid, for analysis.

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Problem Possible Cause Remedy

No LCD display indication and the green Transmitter
Status LED (D3) on the main circuit board is not illumi­nated.

Power switch not in the "ON" position. Move the power switch to the "ON" position.

Improper supply voltage to the power input terminal
block.

Ensure that 24VAC power is connected to L1 and L2 of
the POWER terminal block and that the voltage with the
power switch in the "ON" position is between 22.8 and

26.4 VAC.

Blown fuse. Check power wiring. Ensure that multiple devices wired

on a single transformer are wired "in-phase". Replace
fuse only with a 1.5 amp, fast-acting fuse after the prob­lem has been identified and corrected.

No LCD display indication and the green Transmitter
Status LED (D3) on the main circuit board is flashing.

LCD contrast too low. Turn “Contrast” potentiometer on the main circuit board

"clockwise".

The LCD display is scrambled or there is no LCD display
indication after touching the switches, LCD display or cir­cuit board.

Static electricity. Touch an earth-grounded object, such as a duct, to dis-

charge static electricity then reset the power. Avoid
direct contact with the LCD display or circuit board.

The green Transmitter Status LED (D3) on the main cir­cuit board is "ON" but not flashing.

The microprocessor is not running. Reset 24VAC power by moving the power switch from the

"ON" to "OFF" position and then back to the "ON" posi­tion.

The green Transmitter Status LED (D3) on the main cir­cuit board is flashing at 1-second intervals.

No problem, normal operation. No remedy required.

The green Transmitter Status LED (D3) on the main cir­cuit board is flashing at 2-second intervals.

The sensor detection system has detected trouble. Check sensor probe cable connections. If sensor probe

connections look OK and match the number of sensor
probes indicated on each probe's hang tag, please call
EBTRON's customer service department or visit us at
www.ebtron.com.

Wrong type of sensor probes attached to transmitter. GTx116 transmitter will only operate with GP1 or GB1

sensors connected.

The transmitter indicates airflow when the HVAC system
is not operating.

Sensors are sensitive and can measure very low air
velocities. If a reading is indicated, there is airflow pres­ent where the airflow measuring station is located.

Do not attempt to adjust zero ("offset"). Doing so will
result in an error in airflow measurement. The Low Limit
airflow cutoff value can be set to force the output signal
to zero.

Table 17. General Troubleshooting (All GTx116 Systems)

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Table 19. GTC116 RS-485 Transmitter Troubleshooting

Problem Possible Cause Remedy

No output signal can be measured at the OUTPUT termi­nal block of the GTC116/GTM116 transmitter.

Output card is not securely mounted on main circuit
board.

Turn the transmitter power "OFF", and then press the
output card firmly onto main circuit board. Turn the
transmitter power back "ON".

Blown output fuse (output 1 and output 2 are fused and
protected independently on GTC116/GTM116 transmit­ters).

Make sure that power has not been connected to the
output terminal block. Correct the problem and replace
with 0.125 amp, fast acting fuse only.

Make sure that the host control system is not configured
for a 2-wire device (no excitation voltage should be pres­ent on the signals from the host controls). Correct the
problem and replace with 0.125 amp, fast acting fuse
only.

The Low Limit airflow cutoff value is above the actual air­flow reading.

Decrease the Low Limit airflow cutoff value in the Setup
menu until it is below the actual airflow reading.

The output signal on the GTC116/GTM116 transmitter
fluctuates while the flow and/or temperature readings
on the LCD are steady.

Electrical interference from other devices is creating
noise in the signal wires to the host control system.

The output signal wiring must be shielded. Individually
ground one or more of the following points: the signal
wire shield at host controls; signal wire shield at the
transmitter, or L2 of the power terminal block of the
GTC116/GTM116.

The LCD INTG= value may be greater than the
AO1 INTG= value.

Review and verify LCD INTG= and AO1 INTG= settings.

The LCD display does not match the readings indicated
by the host control system.

The scaling in the host control system is incorrect, or the
AO1/AO2 RNGE= settings are incorrect.

Compare the current configuration of the transmitter
with that of the host control system. Compare the mini­mum and full scale settings for each output by navigat­ing through the Setup menu. Verify AO1/AO2 RNGE=
settings

Problem Possible Cause Remedy

The host control system is unable to communicate with
the GTC116 transmitter.

Output card is not securely mounted on main circuit
board.

Turn the transmitter power "OFF" and press the output
card firmly onto main circuit board. Turn the transmitter
power back "ON".

Network signal wiring is not properly connected to the
GTC116 transmitter or the host controls.

Verify that the network signal wires from the host con­trols are connected to the proper terminals of the OUT­PUT block. On the GTC116 transmitter NETWORK termi­nal block, NET+ is for A, NET- is for B and COM for com­mon.

Network protocol is not properly set on the GTC116. Set network protocol based on the network require-

ments and reset transmitter power.

Network address is not properly set on the GTC116. Set address based on network requirements and reset

transmitter power. The address must be unique for the
network.

Network termination is not properly set on the GTC116. Set transmitter termination based on network require-

ments and reset the transmitter power. Refer to Figure
8 of this technical manual for TERMINATION DIP switch
settings.

The LCD display does not match the readings indicated
by the host control system.

The Area of the GTC116 transmitter does not match that
of the host controls.

Compare the value of the Area of the transmitter with
that of the host control system and make adjustments to
ensure a match.

The returned value for airflow is zero when airflow is
indicated on the LCD display of the GTC116 transmitter.

The Low Limit airflow cutoff value is above the actual air­flow reading.

Decrease the Low Limit airflow cutoff value in the Setup
menu until it is below the actual airflow reading.

The status point from the GTC116 transmitter has a
Trouble value.

The sensor detection system has detected one or more
malfunctioning or missing sensors.

Check sensor probe cable connections. If sensor probe
connections look OK and match the number of sensor
probes indicated on each probe's hang tag, please call
EBTRON's customer service department or visit us at
www.ebtron.com.

Wrong type of sensor probes attached to transmitter. GTx116 transmitter will only operate with GP1 or GB1

sensors connected.

There is no value for the differential pressure point. Differential pressure is only available from transmitters

that have EBTRON's Bi-directional Bleed Airflow Sensors
connected.

If a differential pressure measurement is required, con­tact your local EBTRON Representative about EBTRON's
Bi-directional Bleed Airflow Sensor.

Table 18. GTC116 and GTM116 - Analog Operation Transmitter Troubleshooting

33

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Table 21. GTL116 LonWorks Transmitter Troubleshooting

Problem Possible Cause Remedy

The host control system or web browser is unable to com­municate with the GTM116 transmitter.

Verify that power is available to board (ACTIVITY LED is
illuminated). If not verify that Output card is securely
mounted on main circuit board.

Set transmitter power to "OFF" and press the output card
firmly onto main circuit board. Turn the transmitter
power back "ON".

There is no link to the network indicated by the LINK
LED on the output card.

The LINK LED indicates a valid connection to the net­work when it is illuminated. If the LINK LED is not on,
verify network cabling and connections between the
GTM116 and the network switch or hub. If LINK LED is
on, verify that traffic is flowing by observing the TRAFFIC
LED. If LINK LED is on, but TRAFFIC LED is not, check for
defective network cabling.

The network protocol has not been properly set on the
GTM116.

Set network protocol based on network requirements
and reset transmitter power.

The transmitter address has not been properly set on
the GTM116.

Set the address based on your network requirements.
Note that each address must be unique for the network.

The LCD display does not match the readings indicated by
the host control system.

The area factor in the GTM116 transmitter does not
match that of the host controls.

Compare the value of the Area factor of the GTM116
transmitter with that of the host control system and
make adjustments to ensure a match.

The returned value for airflow is zero when there is airflow
indicated on the LCD display of the GTM116 transmitter.

The Low Limit airflow cutoff value is above the actual
airflow reading.

Decrease the Low Limit airflow cutoff value in the Setup
menu until it is below the actual airflow reading.

The status register from the GTM116 transmitter has a
Trouble value.

The sensor detection system has detected one or more
malfunctioning or missing sensors.

Check sensor probe cable connections. If sensor probe
connections look OK and match the number of sensor
probes indicated on each probe's hang tag, please call
EBTRON's customer service department or visit us at
www.ebtron.com.

Wrong type of sensor probes attached to transmitter. GTx116 transmitter will only operate with GP1 or GB1

sensors connected.

There is no value for the differential pressure point. Differential pressure is only available from transmit-

ters that have EBTRON's Bi-directional Bleed Airflow
Sensors connected.

If a differential pressure measurement is required, con­tact your local EBTRON Representative about EBTRON's
Bi-directional Bleed Airflow Sensor.

Problem Possible Cause Remedy

The host control system is unable to communicate with the
GTL116 transmitter.

Output card is not securely mounted on main circuit
board.

Turn the transmitter power "OFF" and press the output
card firmly onto main circuit board. Turn the transmitter
power back "ON".

The network signal wiring is not properly connected
to the GTL116 transmitter or the host controls.

Verify that network cabling from the host controls is con­nected to the proper terminals of the OUTPUT terminal
block on the GTL116 transmitter. Wires should only be
connected to positions 1 and 2 on the terminal block.

The LonWorks network database has not been con­figured for the GTL116 transmitter.

The LonWorks network database may be pre-configured
using the EBTRON_116.XIF file available for download at
www.ebtron.com or configured at installation time by
direct LonWorks parameter upload from the GTL116 trans­mitter.

The GTL116 transmitter is not providing values for any of
the variables.

The required network configuration variables have
not been set.

Certain network configuration variables must be set to
enable the LonWorks output card to request data from the
GTL116 transmitter. Refer to the GTL116 - LonWorks
INTERFACE section of this technical manual for specific
GTL116 variables and settings.

There is no value for the differential pressure variables. Differential pressure is only available from trans-

mitters that have EBTRON's Bi-directional Bleed
Airflow Sensors connected.

If a differential pressure measurement is required, contact
your local EBTRON Representative about EBTRON's Bi­directional Bleed Airflow Sensor.

The LCD display does not match the readings indicated by
the host control system.

The area factor in the GTL116 transmitter does not
match that of the host controls.

Compare the value of the Area of the GTL116 transmitter
with that of the host control system and make adjustments
to ensure a match.

The returned value for airflow is zero when airflow is indi­cated on the LCD display of the GTL116 transmitter.

The Low Limit airflow cutoff value is above the actu­al airflow reading.

Decrease the Low Limit airflow cutoff value in the Setup
menu until it is below the actual airflow reading.

The status variable from the GTL116 transmitter has a
Trouble value.

The sensor detection system has detected one or
more malfunctioning or missing sensors.

Check sensor probe cable connections. If sensor probe
connections look OK and match the number of sensor
probes indicated on each probe's hang tag, please call
EBTRON's customer service or visit us at www.ebtron.com.

Wrong type of sensor probes attached to transmit­ter.

GTx116 transmitter will only operate with GP1 or GB1 sen­sors connected.

Table 20. GTM116 Ethernet Transmitter Troubleshooting

34

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GOLD SERIES GTX116 TRANSMITTER

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®

TM_GTx116_R9A

a measurable difference!

®

GTC116 Combination Analog/RS-485 Output Transmitter Wiring Diagram

Figure A-1 is a typical wiring diagram for the GTC116 transmitter.

APPENDIX A - WIRING DIAGRAMS

Figure A-1.

Model GTC116 Combination Analog/RS-485 Wiring Diagram

TRANSFORMER

24 VAC / 50-60 HZ

(SEE NOTE 4)

LINE

IN

24

VAC

SHIELDED

TWISTED PAIR

(STP) WIRING

(SUPPLIED BY

OTHERS)

(SEE NOTES

2, 3)

RS-485

CONTROL

GTC116

TRANSMITTER

L2 L1

POWER

24VAC IN

SENSOR PROBE

CONNECTORS

RS-485

OUTPUT

COM

NET -

NET +

NET NET

+ COM

OUT 1

AIRFLOW

OUTPUT

SIGNAL

1 2 COM

ANALOG
OUTPUT

OUT 2

TEMP OR

ALARM

OUTPUT

SIGNAL

ANALOG BAS CONTROL

INTERFACE

OUT 2 can be set for analog
Temperature, Alarm or
Trouble output. Alarm
output can be set as active
high or active low.

NOTES:

1. OUTPUT 2 CAN BE SET AS TEMPERATURE OR AS AN ALARM.
ALARM CAN BE SET AS ACTIVE HIGH OR ACTIVE LOW.

2. CONNECT OUTPUT SIGNAL CABLE DRAINS TO EARTH GROUND AT
ONE END OF EACH CABLE ONLY.

3. RS-485 COM CONNECTION MAY USE A SINGLE CONDUCTOR.

4. ON MULTIPLE TRANSMITTER INSTALLATIONS WITH A COMMON

24VAC SOURCE, WIRE 24 VAC POWER IN-PHASE TO THE SAME
TERMINALS ON ALL TRANSMITTERS (e.g.: L1 to L1, L2 to L2).

35

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GOLD SERIES GTX116 TRANSMITTER

a measurable difference!

®

TM_GTx116_R9A

a measurable difference!

®

GTM116 Combination Analog/Ethernet Output

Transmitter Wiring Diagram

Figure A-2 is a typical wiring diagram for the GTM116 trans­mitter.

GTL116 LonWorks Output

Transmitter Wiring Diagram

Figure A-3 is a typical wiring diagram for the GTL116 trans­mitter.

CAT 5 OR

EQUIVALENT

WIRING

(SUPPLIED BY

OTHERS)

ETHERNET

BAS

INTERFACE

GTM116

TRANSMITTER

SENSOR PROBE

CONNECTORS

RJ45

OUTPUT

BAS ETHERNET

TRANSFORMER

24 VAC / 50-60 HZ

(See Note 3)

LINE

IN

24

VAC

SHIELDED

TWISTED PAIR

(STP) WIRING

(SUPPLIED BY

OTHERS)

See Note 2

L2 L1

POWER

24VAC IN

OUT 1

AIRFLOW/

PRESSURE

OUTPUT

SIGNAL

1 2 COM

ANALOG
OUTPUT

OUT 2*

TEMP

OR

ALARM

OUTPUT

SIGNAL

ANALOG BAS INTERFACE

*OUT 2 can be set as an

analog Temperature, Alarm
or Trouble output. Alarm
output can be set as active
high or active low.

NOTES:

1. OUTPUT 2 CAN BE SET AS TEMPERATURE OR AS AN ALARM.
ALARM CAN BE SET AS ACTIVE HIGH OR ACTIVE LOW.

2. CONNECT OUTPUT SIGNAL CABLE DRAINS TO EARTH GROUND AT
ONE END OF EACH CABLE ONLY.

3. ON MULTIPLE TRANSMITTER INSTALLATIONS WITH A COMMON

24VAC SOURCE, WIRE 24 VAC POWER IN-PHASE TO THE SAME
TERMINALS ON ALL TRANSMITTERS (e.g.: L1 to L1, L2 to L2).

TRANSFORMER

24 VAC / 50-60 HZ

(SEE NOTE 3)

LINE

IN

24

VAC

USE LONWORKS

®

COMPATIBLE SHIELDED

TWISTED PAIR (STP)

CABLE

(SUPPLIED BY OTHERS)

(SEE NOTES 1, 2)

LONWORKS

®

BAS CONTROL INTERFACE

SENSOR PROBE CONNECTORS

NET NET

+

NOTES:
1: REFER TO L

ONWORKS

®

FTT-10A Free Topology Transceiver User’s

Guide AVAILABLE AT www.echelon.com FOR LONWORKS

®

NETWORK

WIRING SPECIFICATIONS AND TERMINATION REQUIREMENTS.

2. GTL116 CONNECTIONS AT TERMINALS 1 AND 2 (NET + and NET -) ARE
NOT POLARITY SENSITIVE, AND THE COM CONNECTION IS NOT USED.

3. ON MULTIPLE GTx116 TRANSMITTER INSTALLATIONS WITH A
COMMON 24VAC SOURCE, WIRE 24 VAC CONNECTIONS IN-PHASE TO
THE SAME TERMINALS ON ALL TRANSMITTERS (e.g.: L1 to L1, L2 to L2).

GTL116

TRANSMITTER

L2 L1

POWER

24VAC IN

1 2 COM

OUTPUT

APPENDIX A - WIRING DIAGRAMS (cont’d)

Figure A-3.

Model GTL116

LonWorks Wiring Diagram

Figure A-2.

Model GTM116

Combination Analog/Ethernet Wiring Diagram

36

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GOLD SERIES GTX116 TRANSMITTER

a measurable difference!

®

TM_GTx116_R9A

TM_GTx116_R9A

a measurable difference!

®

APPENDIX B -

GTx116

SETUP MENUS

37

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GOLD SERIES GTX116 TRANSMITTER

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SYSTEM OF UNITS MENU
Simultaneously depress/release ENTER + ESC keys during normal operation to select

* Factory Default/Current Setting

Enter (move

) Enter (move ) Enter (action, move )

Esc (normal oper.)

Esc (move

)

Esc (move

)

ACTION

IP/SI=IP SYS

IP/SI=SI SYS

SET IP/SI ?

*IP/SI=IP SYS

Set system of units to I-P (FPM, CFM, sq.ft., ºF)
or Set system of units to S.I. (MPS, LPS, sq.M., ºC).
NOTE:
Changing IP/SI SYS resets alarm settings and scaling values.

Figure B-2. GTx116 Setup Menu

SETUP MENU
Simultaneously depress/release

+ keys during normal operation to select

* Factory Default/Current Setting

Enter (move

) Enter (move ) Enter (move ) Enter (move ) Enter (action, move )

Esc (normal oper.)

Esc (move

or prev setting) Esc (move or prev setting) Esc (move )

Esc (move

)

ACTION

Only when AIRFLOW=ACT

TO PART 5 'A' TO PART 2

AUTO forces a re-read of the one-wire value. (AUTO not available if area value has not been
written into one-wire chip).

O

Integration samples for LCD.

SET LCD DSPL? LCD DSPL=OFF

LCD DSPL=FLOW

Set what is displayed on LCD.

LCD DSPL=BOTH

*LCD DSPL=BOTH

LCD UM=AFPM

*LCD INTG=100 SET LCD INTG? LCD INTG=100

GENERAL *NAME={unit serial#}

SET NAME ?

*LCD TRBL=ON

SET LCD TRBL? LCD TRBL=OFF

ON FAIL=HI

*EXT CABLE=0 SET EXT CABLE? EXT CABLE=0

SETUP

*AIRFLOW=ACT SET AIRFLOW?

AIRFLOW=STD

SET ALT?

Set the airflow measurement to ACTUAL units (AFPM/ACFM)

Set the airflow measurement to Standard units (SFPM/SCFM)

AIRFLOW=ACT

Custom LCD Flow Text: Blinking prompt at position of the selected character. Character is
selected using the up and down arrows and then ENTER to accept and move cursor forward
(right); ESC moves the cursor back (left). Use space characters
for blank or unwanted text.

Instruction text:

"USE

AND ENT"

then:

NAME= _

*LCD UM=ACFM

*LLIMIT=0

DISPLAY

ALT=0

*ON FAIL=LO SET ON FAIL?

*ALT=0

Set LCD airflow display units to CFM or FPM. (Note: A-ACT or
S-STD measurement prefix is set by AIRFLOW= setting above).

This is always a velocity value.

*AREA=

{from setup}

*TEMP METH=WGT

AREA=xx.xx SET AREA?

ON FAIL=LO

Set the altitude above sea level for flow correction: 0 to 18,000 ft.

LLIMIT=0

SET LCD UM? LCD UM=ACFM

SET TEMP METH?

SET LLIMIT?

AREA=AUTO

Enter length of extension cable.

Note: Value is from one-wire but can be overridden.

Set whether or not TROUBLE will display on LCD during a trouble condition.

TEMP METH=WGT

Set temperature output for velocity weighted average of temperature sensors.

TEMP METH=AVG

Set temperature output for mathematical average of temperature sensors.

Sets transmitter analog output state in the event of a major fault (all sensor failure) expressed
as HI for full scale analog output or LO as minimum scale analog output.

LCD DSPL=TEMP

LCD TRBL=ON

O

TM_GTx116 Setup Menu (PART 1 OF 6)

Figure B-1. TM_GTx116 System of Units Menu

38

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GOLD SERIES GTX116 TRANSMITTER

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®

TM_GTx116_R9A

a measurable difference!

®

FROM PART 1

O

O

TM_GTx116 Setup Menu (PART 2 OF 6)

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TM_GTx116_R9A

Analog cards only

ANALOG OUT

*AO1 ASGN=FLOW

*A01 SGNL=mA

AO1 ASGN FIXED

SET SW1 ON PCB

The text "AO1 ASGN FIXED" flashes to indicate that this setting is fixed and cannot be
modified.

Display initially shows the current SW1 PCB switch setting (VDC or mA) for AO1. Pressing
enter displays "SET SW1 ON PCB" prompt to confirm SW1 PCB setting.

if AO1 SGNL=mA

*AO1 RNGE=4-20

if AO1 SGNL=VDC

*AO1 RNGE=0-10

*AO1 UM=AFPM SET AO1 UM?

*AO1 FS=5000 SET AO1 FS? AO1 FS=5000

*AO1 INTG=30 SET AO1 INTG? AO1 INTG=30

*AO2 ASGN=TEMP

*A02 SGNL=mA SET SW2 ON PCB

if AO2 SGNL=mA

*AO2 RNGE=4-20

AO1 RNGE=FIXED

SET AO1 RNGE? Set analog output range (VDC) for AO1.AO1 RNGE=0-10

AO1 RNGE=0-5

AO1 UM=AFPM

AO1 UM=ACFM

SET AO2 ASGN? AO2 ASGN=TEMP

AO2 ASGN=ALRM

AO2 ASGN=TRBL

AO2 RNGE=FIXED

The text "AO1 RNGE=FIXED" flashes to indicate that this setting is fixed and cannot be
modified.

Set AO1 output units to FPM or CFM. (Note: A-ACT or
S-STD measurement is set by AIRFLOW= setting above).

Set full scale for AO1. FS default value is dependent on probe type connected.

Integration samples. Also same as network integration.

AO2 output is assigned as temperature output.

AO2 output is assigned as an airflow alarm output.
Refer to ALARM settings (part 4).

AO2 output is assigned as a transmitter trouble alarm indicating that a sensor or transmitter
fault has occurred.

Display initially shows the current SW2 PCB switch setting (VDC or mA) for AO2. Pressing
enter displays "SET SW2 ON PCB" prompt to confirm SW2 PCB setting.

The text "AO2 RNGE=FIXED" flashes to indicate that this setting is fixed and cannot be
modified.

if AO2 SGNL=VDC

*AO2 RNGE=0-10

if AO2 CFG=TEMP

*AO2 UM=F AO2 UNITS FIXED

*AO2 MS=-20

*AO2 FS=160

if AO2 CFG=ALRM or TRBL

*NO FAULT = HI

SET AO2 RNGE? AO2 RNGE=0-10 Set analog output range (VDC) for AO2.

AO2 RNGE=0-5

The text "AO2 UNITS FIXED" flashes to indicate that this setting is fixed and cannot be
modified.

SET AO2 MS? AO2 MS=-20

SET AO2 FS?

SET NO FAULT? NO FAULT = LO

AO2 FS=160

NO FAULT = HI

Set AO2 minimum scale.

Set AO2 full scale.

Sets AO2 alarm/trouble output state when no fault condition is present, expressed as HI (full
scale analog output) or LO (minimum scale analog output).

TO PART 3

a measurable difference!

®

FROM PART 2

GTC only

GTC configuration

Enter network address.

Set network baud rate.

Option for MODBUS only

Set MODBUS parity type.

Option for BACNET only

Set network device instance number.

GTM only

GTM configuration

TO PART 4

EB-LK INTG=300ĹĻ EB-Link integration samples.

*NETDI=2Ĺ SET NETDI? NETDI=2ĹĻ Set network device instance number.

010.000.000.010

NETDI=2ĹĻ

*DHCP=OFFĻ

PARITY=NONE1ĹĻ

NETOUT=MODBUSĹ

*NETADDRESS= 2ĹĻ NETADDRESS=2ĹĻ

SET DHCP? DHCP=OFFĻ

DHCP=ONĹ

BACNET=IPĻ

PARITY=NONE2Ĺ

*BACNET=IPĹĻ SET BACNET?

*MASK=255.255.ĹĻ SET MASK? 255.255.255.000

NETBAUD=19200ĹĻ

NETBAUD=9600Ĺ

BACNET=ETHĹ

*GATE=10.0.0..ĹĻ SET GATEWAY?

PARITY=ODDĹĻ

NETBAUD=38400ĹĻ

*NETDI=2Ĺ SET NETDI?

010.000.000.001

*NETBAUD=76800ĹĻ SET NETBAUD? NETBAUD=76800Ļ

*PARITY=EVENĹ SET PARITY? PARITY=EVENĻ

*NETOUT=BACNETĻ SET NETOUT? NETOUT=BACNETĻ Set network protocol type.

O

O

NETWORKĹĻ

SET IP?

SET NETADDRESS?

NETWORKĹĻ

*IP=10.0.0.1 ĹĻ

EB-LINK ĹĻ *EB-LK INTG=300 SET EB-LK INTG?

Enter IP address, use (up/down arrow) buttons to select value and press ENT to move to right
and ESC to move to left.

Enter subnet mask, use (up/down arrow) buttons to select value and press ENT to move to
right and ESC to move to left.

Enter gateway IP address, use (up/down arrow) buttons to select value and press ENT to move
to right and ESC to move to left.

Set BACnet IP or Ethernet protocol.

Set DHCP to ON or OFF.

TM_GTx116 Setup Menu (PART 3 OF 6)

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GOLD SERIES GTX116 TRANSMITTER

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TM_GTx116 Setup Menu (PART 4 OF 6)

FROM PART 3

TO PART 5 'B'

RESET=MANUALĹ

SET ZERO OFF? ZERO OFF=NOĻ

ZERO OFF=YESĹ

*RESET=AUTOĹ SET RESET? RESET=AUTOĻ

*ZERO OFF=NO ĹĻ

*TOL=10%ĹĻ SET TOL? TOL=10%ĹĻ Enter tolerance as value above or below alarm setpoint. Units based on ALARM UM.

*DELAY=2 minĹĻ SET DELAY? DELAY=2 minĹĻ Set alarm DELAY.

ALRM UM=ACFMĹ

*SETPNT=0ĹĻ SET SETPNT? SETPNT=0Ĺ Enter setpoint for alarm.

ALARMĹĻ

HI ALRM=ONĹ

*ALRM UM=AFPMĹĻ SET ALRM UM? ALRM UM=AFPMĻ

Set alarm units of measure to FPM or CFM (Note: A if ACT or S if STD measurement prefix set
by AIRFLOW= setting above).

LO ALRM=ONĹ

SET LO ALRM?

Enable/disable HI alarm.

LO ALRM=OFFĻ Enable/disable LO alarm.

*HI ALRM=OFFĹĻ SET HI ALRM? HI ALRM=OFFĻ

*LO ALRM=OFFĻ

O

O

When ZERO OFF=YES, this setting is used to inhibit the LO ALRM condition when the unit is
reading 0. This is dependent on the low limit setting.

Set alarm RESET. AUTO will clear once the alarm is not active. MANUAL requires user to clear
alarm by depressing the ESC key, or for RS485 (GTC116) output, write 0 to corresponding
alarm BACnet object or Modbus register. Alarm will only clear when alarm is not active.

41

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®

FROM PART 1 FROM PART 4

Dashed lines indicate Menus when # OF FLOWS=2

TO PART 6

GTC, GTM models only

GTC, GTM models only

RESET TRBLĹ ARE YOU SURE? RESET TRBL=YESĻ

RESET TRBL=NOĹ

TOOLSĹĻ

"Wait. . . %" indicates progress while the Field Adjustment Wizard acquires a large number of
samples of airflow rate and averages all of the readings. Display indicates "ADJUSTMENT
COMPLETE" when adjustment is complete.
If you wish to review the adjustment made, simply navigate back to the SETUP menu and view
the ADJUSTMENTS section.

5

A

O

RESET NETĹ ARE YOU SURE?

Clears all disabled trouble settings.

RESET ADJĹĻ

LOCK SEC=MEDĹĻ

RESET ADJ=NOĹ

RESET ALL=NOĹ

Sets security level to MED. In this mode, a user defined code is specified. In the event of loss
of code, contact EBTRON for a unique code for this transmitter to unlock and reset code.

RESET NET=NOĹ

RESET SENSĹĻ ARE YOU SURE? RESET SENS=YESĻ

RESET SENS=NOĹ

*LOCK=OFFĹ SET LOCK? LOCK=OFFĻ

LOCK=ONĹ

ENTR CODE:0Ĺ CONF CODE:0Ĺ

LOCK SET=HIGHĹ

RESET ADJ=YESĻ

RESETĹ RESET ALLĻ ARE YOU SURE? RESET ALL=YESĻ

SECURITYĹĻ *LOCK SEC=LOWĻ SET LOCK SEC? LOCK SEC=LOW Ļ

FLOW2= 0Ĺ

(Set 0 to 999999 using

the ĹĻ keys)

Wait. . .%

ADJUSTMENT

COMPLETE

SET FLOW2?

ENSURE THAT FAN IS

ON AND SET TO

DESIRED SPEED!

OUT2 TEST%Ĺ SET OUT2 TEST? OUT2 TEST%=0Ĺ

OUTPUT TESTĹĻ

FIELD ADJUSTĹĻ RUN FA WIZARD? SET FAW INT FAW INT=300ĹĻ

ADJUSTMENTSĹ

*OFF=0Ĺ SET OFF?

OUT1 TEST%Ļ SET OUT1 TEST? OUT1 TEST%=0Ĺ

FLOW ADJ=ONĹ

*GAIN=1.000ĹĻ SET GAIN? GAIN=1.000ĹĻ

SET FLOW ADJ? FLOW ADJ=OFF Ļ

OFF=0ĹĻ

# OF FLOWS=2Ĺ

SET # OF FLOWS? # OF FLOWS=1 Ļ

Set OUT2 to % of full scale analog output.

Start field adjust wizard and enter number of integration samples to use.

*FLOW ADJ=OFFĻ

SET FLOW1?

ENSURE THAT FAN IS

ON AND SET TO

DESIRED SPEED!

Wait. . .%

ADJUSTMENT

COMPLETE

The Field Adjust Wizard will now be engaged as outlined in the following steps.
The GAIN and OFF values will be updated, and FLOW ADJ=ON will be set if the wizard is
successfully completed.

5B

Enable/disable flow adjustments.

Enter gain applied to airflow reading.

Enter offset applied to airflow reading.

Set OUT1 to % of full scale analog output.

Enable/disable security lock.

Enter code and confirm code (NOTE: if LOCK SEC= HIGH, DO NOT lose code!)

Reset ALL changes back to factory defaults. Transmitter resets after completion.

Sets security level to HIGH. In this mode, a user defined code is specified. In the event of loss
of code, transmitter must be returned to EBTRON for unlock / reset.

FLOW1= 0Ĺ

(Set 0 to 999999 using

the ĹĻ keys)

Sets security level to LOW. In this mode, there is no prompt for a lock code.
The last 4 digits of the board serial are used to unlock.

Resets sensor data. Transmitter resets after completion.

Resets network settings to factory default.

Reset FLOW adjustments to GAIN = 1, OFF = 0, FLOW ADJ = OFF

RESET NET=YESĻ

ARE YOU SURE?

TM_GTx116 Setup Menu (PART 5 OF 6)

42

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GOLD SERIES GTX116 TRANSMITTER

a measurable difference!

®

TM_GTx116_R9A

a measurable difference!

®

TM_GTx116 Setup Menu (PART 6 OF 6)

FROM PART 5

1: NO PROBES

(example shown)

Displays unit serial number.

Displays main PCB serial number.

For sensors =1 to 9, A to G (number of sensors dependant on sensor type).

Displays historical list of last 5 trouble codes encountered and their descriptions.
Note that spurious trouble codes may self-clear during normal operation, and this feature permits viewing them even after they have resolved.

DSBL TRBL=YES

Displays active trouble codes and their descriptions. Contact EBTRON customer service for
recommended service information.

Set DSBL TRBL= YES to ignore currently displayed TRBL alarm. To disable all trouble codes,
see SETUP -> DISPLAY -> LCD TRBL.

For sensors =1 to 9, A to G (number of sensors dependant on sensor type).

For sensors =1 to 9, A to G (number of sensors dependant on sensor type).

TRBL HISTORY

SERIAL NUMBERS UNIT #######

TRBL CODES DSBL TRBL=NO

SENS VOLTS 1=H##.## T##.##

1=##.#F

BRD #####

DIAGNOSTICS

SENS VELOCITY 1=#####FPM

O

SENS TEMP

C3 ###### T

C4 ###### F

Displays probe serial numbers followed by a T if connected and functioning properly, and
then followed by an F if not connected or not functioning properly.

C1 ###### T

C2 ###### F

1: NO PROBES
(example shown)

PROBE TYPE

TYPE= P Type 'P' for 'P' probes; Type 'B' for Bleed sensors.

DSBL TRBL CODE?

43

EBTRON, Inc. 1663 Hwy. 701 S., Loris SC 29569 • Toll Free: 800.2EBTRON (232.8766) • Fax: [phone] • Internet: EBTRON.com

GOLD SERIES GTX116 TRANSMITTER

a measurable difference!

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TM_GTx116_R9A

a measurable difference!

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EBTRON, Inc. 1663 Hwy. 701 S., Loris SC 29569 • Toll Free: 800.2EBTRON (232.8766) • Fax: [phone] • Internet: EBTRON.com