Easidew Online User’s Manual
Michell Instruments
v
3.4.2
Span and Unit Settings ............................................................................... 33
3.4.3
Alarm Set-Point Limit Con
fi
guration .............................................................. 34
3.4.4
Scale Units to ppm
V
Set-Up .......................................................................... 35
3.4.5
Monitor Limits When Unit Scaled to ppm
V
.................................................... 36
3.5 Digital Communication Parameters Set-Up .......................................................... 37
3.6 Monitor – Reading the Displayed Value Using Modbus RTU Over RS232 ................ 39
4 GOOD MEASUREMENT PRACTICE .....................................................................40
4.1
General Operational Guidelines ......................................................................... 41
4.2
Maintenance and Calibration ............................................................................ 42
4.2.1
Clean Monitor ............................................................................................ 42
4.3 Fault
Conditions
............................................................................................... 43
Figures
Figure 1
Easidew Online Monitor and Transmitter .......................................................1
Figure 2
Unpacking Method ......................................................................................3
Figure 3
Transmitter Unpacking Method ....................................................................4
Figure 4
Monitor Unpacking Method ..........................................................................4
Figure 5
Accessories Pack ........................................................................................5
Figure 6
Easidew Online Components .......................................................................5
Figure 7
Easidew Transmitter ...................................................................................6
Figure 8
Monitor Panel Layout ..................................................................................7
Figure 9
Mounting the Monitor ...............................................................................10
Figure 10
AC Power Supply Connections ...................................................................12
Figure 11
DC Power Supply Connections ...................................................................13
Figure 12
Sample Block Gas Connections ..................................................................15
Figure 13
Connector Terminal Block Removal ............................................................16
Figure 14
Wiring Connections ...................................................................................16
Figure 15
Connector Installation ...............................................................................17
Figure 16
2-Wire Connection Diagram .......................................................................17
Figure 17
Maximum Load of Easidew - Including Cable Resistance ..............................18
Figure 18
Transmitter Mounting - Sensor Block ..........................................................19
Figure 19
Transmitter Mounting - Pipe or Duct...........................................................20
Figure 20
Transmitter Mounting with Adapter ...........................................................21
Figure 21
Transmitter Connections............................................................................22
Figure 22
Monitor Rear Panel Connections ................................................................23
Figure 23
Typical Display .........................................................................................26
Figure 24
Change Alarm Switching Logic ...................................................................29
Figure 25
Set-up Alarm Levels ..................................................................................30
Figure 26
Con
fi
gure Analog Output ...........................................................................31
Figure 27
Span and Unit Settings .............................................................................33
Figure 28
Set-up Alarm Set-Point Limits ....................................................................34
Figure 29
Set-up Monitor (to read ppm
V
) ...................................................................36
Figure 30
Set-up Data Communications Parameters ...................................................38
Figure 31
Installation Location .................................................................................41
Figure 32
Indication of Dead Space ..........................................................................41
Figure 33
Dimensions .............................................................................................47
Figure 34
RS232 Connections ...................................................................................49
