Series A12
Unisens
2-Wire Transmitter
O & M Manual
- 2 -
Rev-L, 7/15
TABLE OF CONTENTS
INTRODUCTION ....................................................................................................................................................3
AUTO-TEST OPTION ..............................................................................................................................4
DUCT MOUNTED SENSORS ..................................................................................................................6
SPECIFICATIONS
...................................................................................................................................................7
INSTALLATION
........................................................................................................................................................8
MECHANICAL MOUNTING ...................................................................................................................8
DUCT MOUNT SENSOR INSTALLATION ...........................................................................................10
SENSING MODULE REMOVAL ............................................................................................................11
CHANGING GAS SENSOR TYPE ...........................................................................................................11
ELECTRICAL CONNECTION
.................................................................................................................................12
OPERATION
............................................................................................................................................................14
START-UP .................................................................................................................................................14
STARTUP DELAY ....................................................................................................................................15
FRONT PANEL MAGNETIC CONTROLS .............................................................................................15
LIQUID CRYSTAL DISPLAY .................................................................................................................16
MENU SEQUENCE .................................................................................................................................................17
TRANSMITTER MODE SELECTION .....................................................................................................19
INFORMATION MODE ...........................................................................................................................19
TEST MODE ..............................................................................................................................................19
MANUAL AUTO-TEST ACTIVATION ..................................................................................................19
ANALOG OUTPUT SIMULATION .........................................................................................................20
CALIBRATION
.........................................................................................................................................................21
SENSING MODULE ZERO ADJUSTMENT ...........................................................................................22
SENSING MODULE SPAN ADJUSTMENT ...........................................................................................23
CALIBRATION OF DUCT MOUNT SENSORS .....................................................................................24
MA OUTPUT ADJUSTMENT ..................................................................................................................25
UNDER RANGE ENABLE/DISABLE SELECTION ..............................................................................25
AUTO-TEST ENABLE/DISABLE SELECTION .....................................................................................25
ERROR MESSAGES ................................................................................................................................26
FIGURES
Figure 1 - UniSens Transmitter Components ............................................................................................... 5
Figure 2 - UniSens Transmitter w/Duct Sensor Components ...................................................................... 6
Figure 3 - Overall Dimensions ...................................................................................................................... 8
Figure 4 - Wall Mounting Bracket ................................................................................................................. 9
Figure 5 - Duct Mount Sensor Installation .................................................................................................. 10
Figure 6 - Electrical Connections ................................................................................................................ 12
Figure 7 - Remote Electrical Connections .................................................................................................. 13
Figure 8 - UniSens Front Panel .................................................................................................................. 15
Figure 9 - Liquid Crystal Display ................................................................................................................. 16
Figure 10 - Transmitter Program Chart ...................................................................................................... 17
Figure 11 - Sensor Calibration Adapter Assemblies .................................................................................. 22
Figure 12 - Duct Mount Sensor Calibration ................................................................................................ 24
