Pulsar MDot User manual

Model MDotTM
Instruction Manual
109672, Rev. B

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Pulsar Measurement MDot Manuals:
• Pulsar Measurement MDot View Manual
Pulsar Measurement MDot Manuals:
•
Pulsar Measurement MDot View Manual
Pulsar Measurement MDot manuals and software available in English only.
Model MDot
Disclaimer
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This publication must be read in its entirety before performing any operation. Failure to
understand and follow these instructions could result in serious personal injury and/or
damage to the equipment. Should this equipment require repair or adjustment beyond
the procedures given herein, contact the factory at:
[e-mail]
Download Technical Data Sheets from our website:
www.pulsarmeasurement.com
Pulsar Measurement (Pulsar) believes that the information provided herein is
accurate; however, be advised that the information contained herein is NOT
a guarantee for satisfactory results. Speci cally, this information is neither
a warranty nor guarantee, expressed or implied, regarding performance,
merchantability,  tness, or any other matter with respect to the products; nor
recommendation for the use of the product/process information in con ict with
any patent. Please note that Pulsar Measurement reserves the right to change and/
or improve the product design and speci cation without notice.
PULSAR MEASUREMENT UK
Cardinal Building, Enigma
Commercial Centre
Sandy’s Road, Malvern WR14 1JJ
[phone]
PULSAR MEASUREMENT CAN
16456 Sixsmith Drive
Long Sault, Ont. K0C 1P0
[phone]
PULSAR MEASUREMENT US
11451 Belcher Road South
Largo, FL 33773
[phone]]

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Model MDot
Table of Contents
1. Introduction Pages 6-18
a. Quick Start Guide .........................................................................p. 6
b. Menu Trees ..............................................................................p. 8
c. General ................................................................................p. 16
2. Installation (Mechanical) Pages 19-30
a. Lateral Placement ........................................................................p. 20
b. Welding Branch Outlet to Pipe (Insertion)...................................................p. 22
c. Installation Depth ........................................................................p. 23
d. Orientation .............................................................................p. 24
e. Mounting Instructions ....................................................................p. 26
f. Retractor Installation......................................................................p. 28
3. Wiring (Electrical) Pages 32-42
a. Wiring Access ...........................................................................p. 32
b. Input Power .............................................................................p. 34
c. Signal Wiring ............................................................................p. 35
d. Pulse/Alarm Wiring (optional feature) ......................................................p. 37
e. RS485 Wiring: Modbus RTU ...............................................................p. 39
f. HART Wiring.............................................................................p. 40
4. Operation (Standard Operation) Pages 43-66
a. Start Up ................................................................................p. 43
b. Programming ...........................................................................p. 45
c. MDot Cal ...............................................................................p. 61
d. MDot GasSelect .........................................................................p. 64
5. Communication Protocols Pages 67-81
a. Modbus RTU (RS485).....................................................................p. 67
c. HART ...................................................................................p. 78
6. Maintenance Pages 83-92
a. Safe Meter Removal from Retractor ........................................................p. 85
b. Troubleshooting .........................................................................p. 89

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Model MDot
Table of Contents
7. Appendices Pages 93-102
 ...........................................................................p. 93
b. Agency Approvals .......................................................................p. 96
c. Dimensions .............................................................................p. 97
d. Warranty ..............................................................................p. 101
e. Returning your meter ...................................................................p. 102
 
9. Index Page 104

1. Record inside diameter (ID). Ensure the actual pipe ID
matches the pipe ID shown on the factory calibration

2.
Record up/downstream straight-pipe requirements
based on Pipe ID and meter style (insertion or inline).
[refer to p. 20]
3. The Flow Direction Indicator must point in the

The housing can be rotated for a better view of the
meter's display. Note that the 2 set screws must be
loosened before the housing will turn. [refer to p. 24]
4.
Ensure correct probe depth setting. If using 1 ½" size
pipe, please see note on p. 23.
5. Open the housing. If needed, the orientation of
display can be rotated in 90° increments for a better
view.
[refer to p. 25 for more information]
6. Ensure power wiring [p. 34] and 4-20mA wiring
[p. 35 - p. 36] are properly connected. [refer to
Wiring section p. 32 for more information]
The Pulse/Alarm and serial communication wiring
options are based on model type.
7.

8. 
of the display or by using the MDot View software tool. Record the settings in the spaces given for
items A - E on the following page.
Use the table below as a guide while using the worksheet on the next page to record your notes.
NOTE: Please read the entire quick-start procedure before beginning installation.
ID OD
FLOW
4X = Inline
10X = Insertion
8X = Inline
15X = Insertion
Pipe ID min.
INDICATOR:
- POINT IN DIRECTION
OF FLOW
- REMOVE TO ROTATE
HOUSING
- REPLACE WHEN DONE
LOOSEN HOUSING
WITH 2 FRONT SET
SCREWS, RETIGHTEN
WHEN DONE
FLOW
FLOW
PIPE
0.73"
(18.5 mm)
L
C
F1 F2 F3 F4
ACCESS DISPLAY
BY UNSCREWING COVER
REMOVE SCREWS ON
DISPLAY TO ROTATE
DISPLAY ±180°
( - )(+) ( - )(+)(
- )(+)
Power
12-28VDC
4-20mA Pulse
/Alarm
!(
- )(+)
Power
12-28VDC
4-20mA(
-
)
!
4-20mA(+) Common Tx/Rx(
-
)
Tx/Rx(+)
F1 F2 F3 F4
Initializing...
Quick Start Guide | 6
MDot
Quick Start Guide

Item to verify
Serial Number: Serial Number: Serial Number: Serial Number:
1. What is the Pipe ID? ID = ID = ID = ID =
2. Calculate the Upstream/
Downstream straight-pipe
requirements
UP =
DN =
UP =
DN =
UP =
DN =
UP =
DN =
3. 

Must the housing be rotated for
easy viewing?
Y / N
Y / N
Y / N
Y / N
Y / N
Y / N
Y / N
Y / N
4. Is the probe depth setting correct? Y / N Y / N Y / N Y / N
5. Have you rotated the display for
easier viewing?
Y / N Y / N Y / N Y / N
6. Verify proper power wiring
7. Verify proper input/output wiring
After applying power to your meter, check items A - E below by accessing the meter settings either through
the front panel of the meter's display or by using the MDot View software tool.
A. 
meter? (SCFM, KG/H, etc..)
B. Correct values for reference
temperature and pressure?
Y / N Y / N Y / N Y / N
C. 
same as "Pipe_id="
D. Verify 4mA and 20mA meter
settings
4mA =
20mA =
4mA =
20mA =
4mA =
20mA =
4mA =
20mA =
E. 
for your application in the MDot
GasSelect menu
Your Notes:
Before applying power to your meter, use this worksheet to record your notes.
If you are experiencing any problems after completing this procedure, please call the Pulsar
Measurement Service Department at [phone] (United Kingdom) or [phone]
(Canada/United States) to review this information.
Quick Start Guide | 7
MDot
Quick Start Guide

MAIN MENU
I/O FLO DSP EXIT
SET I/O
COM 420 EXIT
Comm=Modbus
NXT OK
None
Modbus
mA=Flow
NXT OK
20 mACnt=52900
CHG OK
4 mACnt=2515
CHG OK
20 mA=2345.6 SCFM
CHG OK
4 mA=0 SCFM
CHG OK
Temp
Flow Analog Outputs
Baud=9600
NXT OK
Parity=NONE
NXT OK
Address=02
CHG OK
Modbus
only
1200
2400
4800
9600
19200
38400
57600
76800
115200
NONE
ODD
EVEN
01-247
Enter menu by scrolling to display 4
and entering the password
mA Fault=Not used
NXT OK
Not used
3.6 mA
21 mA
SET I/O
PUL 420 EXIT
If RS485 hardware detected
/with license
Communicaon
OR
Level 2
only
OR SET I/O
COM PUL 420 EXIT
Comm=HART
OK
Address=0
CHG OK
If pulse/alarm hardware detectedIf HART hardware detected/with license
0-63
NOTE: Some menus will only be
available with a level 2 password.
NOTE: Menu tree boxes are
populated with example values.
NOTE:
Some menus will only be
available with a level 2 password.
NOTE:
Menu tree boxes are
populated with example values.
Display Menu, p. 12
Flow Menu 1, p. 10
Digital Output Menu, p. 9
MDot
Introduction | 8
Introduction
Fig. 1.1: MDot Menu Tree - Main Menu

OUT= Pulse
NXT OK
Not used
Pulse
HiFloAlm
LoFloAlm
HiTempAlm
LoTempAlm
SystemAlm
Pulse Output
P/U U/P FEQ EXIT
PLS/UNT=2
CHG OK
UNT/PLS=0.5
CHG OK
MaxFreq=100Hz
CHG OK
MaxFlo=5000 SCFM
CHG OK
HiFloAlm=500 SCFM
CHG OK
LoFloAlm=100 SCFM
CHG OK
HiTmpAlm=250° F
CHG OK
LoTmpAlm=10 F
CHG OK
High Flow Alarm
Low Flow Alarm
High Temp Alarm
Low Temp Alarm
Select 1 of 3
methods to scale
the pulse output
Pulse
OUT= HiFloAlm
NXT OK
OUT= LoFloAlm
NXT OK
OUT= HiTmpAlm
NXT OK
OUT= LoTmpAlm
NXT OK
Set I/O
PUL 420 EXIT
Alarm output
I/O MENU
I/O COM 420 EXIT
OUT= System Alm
NXT OK
System Alarm
MAIN MENU
I/O FLO DSP EXIT
(See Flow Menu 2, p. 11, for more alarm
settings)
NOTE: A value of 0 disables the
alarms
NOTE:
A value of 0 disables the
alarms
MDot
Introduction | 9
Introduction
Fig. 1.2: MDot Menu Tree - Digital Outputs

FLOW MENU 1
DGN UNT FM2 EXIT
DIAGNOSTIC
SIM CAL
EXIT
FloSim=0 SCFM
CHG OK
TmpSim=0 ° F
CHG OK
FLO UNT=SCFM
NXT OK
SCFM
SCFH
NM3/H
NM3/M
KG/H
KG/M
KG/S
LBS/H
LBS/M
LBS/S
NLPH
NLPM
MMSCFD
LBS/D
SLPM
NLPS
MSCFD
SM3/H
MT/H
NM3/D
MMSCFM
SCFD
MCFD
SM3/M
SM3/D
TMP UNT=° F
NXT OK
Deg F
Deg C
TmpRef=60 °F
CHG OK
PRES UNT=Psia
NXT OK
PresRef=14.73
CHG OK
mmHG
Psia
bara
STP
(Standard
Temperature
and Pressure)
Simulate Flow?
YES NO
Simulate Temp?
YES NO
DNS=1.2323 kg/m3
OK
MAIN MENU
I/O FLO DSP EXIT
ENABLE SIM?
YES NO
Flow Menu 2 Menu, p. 11
MDot Cal Menu, p. 13
MDot
Introduction | 10
Introduction
Fig. 1.3: MDot Menu Tree - Flow Menu 1

FLOW MENU 2
GAS SPC PRM EXIT
K fact = 0%
CHG OK
RESET CRC?
YES NO
Cutoff=12.5 SCFM
CHG OK
Pipe_id=4.026 In
CHG OK
Filter=0.8 Sec
CHG OK
Parameters
Flow cutoffin selected units
Pipe id in inches or mm
Flow Filter in seconds
Min = 0.8, max = 10
HiFloAlm=0 SCFM
CHG OK
LoFloAlm=0 SCFM
CHG OK
HiTmpAlm=0 SCFM
CHG OK
LoTmpAlm=0 SCFM
CHG OK
•
•
These alarms can be used without the digital output assigned to the
alarm.
If that is the case, the alarm status will only be shown on the
display, through serial communicaon or MDot View.
•If the digital output is assigned to an alarm, changing the value here
will change that seng.
Level 2
RESTORE DATABASE?
YES NO
SET NRT?
YES NO
ARE YOU SURE?
YES NO
TOT RST OFF
OK
This message will show for 3 seconds
before returning to the Flow
Parameter 2 Menu.
WARNING: Once the non-reseable
totalizer is acvated, it cannot be
undone.
MAIN MENU
I/O FLO DSP EXIT
FLOW MENU 1
DGN UNT FM2 EXIT
MDot GasSelect Menu, p. 14
MDot
Introduction | 11
Introduction
Fig. 1.4: MDot Menu Tree - Flow Menu 2

DISPLAY/PASSWORD
DSPPSWEXIT
DSP1L1=FLorate
NXTOK
FLorate
Total
Elps
Temp
Alarm
DSP1L2=Total
NXTOK
DSP2L1=temp
NXTOK
DSP2L2=Elps
NXTOK
ALTERNATE=Off
NXTOK
On
Off
PASSWD=1234
CHGOK
FLorate
Total
Elps
Temp
Alarm
FLorate
Total
Elps
Temp
Alarm
FLorate
Total
Elps
Temp
Alarm
Whenalternate
"ON",flashes
betweenthe2
displays
Display1
Line1
Display2
Line1
Display2
Line2
MAINMENU
I/OFLODSPEXIT
Display1
Line2
MDot
Introduction | 12
Introduction
Fig. 1.5: MDot Menu Tree - Display Menu
NOTE: All readings updated every second
• Flo Rate = Flow rate of process gas
• 
• 
• Temp = Temperature of process gas
• 
NOTE: All readings updated every second
•
Flo Rate = Flow rate of process gas
•

•

•
Temp = Temperature of process gas
•


DIAGNOSTIC MENU
SIM Cal EXIT
Mdot Cal MENU
VER EXIT
Verifying CAL
Please Wait
Verifying Cal
0.512 T=123
MDot Cal=0.259
Pass OK
Displays the test’s
count down �mer
Displays a MDot Cal
value during test
VERIFY MDot Cal?
YES NO
MDot Cal=0.911
Warning OK
MDot Cal=2.321
Fail OK
FLOW MENU 1
DGN UNT FM2 EXIT
MAIN MENU
I/O FLO DSP EXIT
MDot Cal Fail
Greater than ±1.0
MDot Cal Pass
Less than ±0.80
MDot Cal Warning
Between ±0.80 to ±1.0
Flo: Hold value
NXT EXIT OK
Hold value
Go to zero
Take Control
Off-line EXIT OK
MDot
Introduction | 13
Introduction
Fig. 1.6: MDot Menu Tree - MDot Cal Menu

FLOW MENU 2
GAS SPC PRM EXIT
Gas=Digester gas
NXT OK
Methane
Air
Mix (100%)
OK
Only for
Digester gas mix
CO2 = 34.5%
UP DN OK
Shows only if Digester gas
mix does not equal 100%.
Pressing OK returns to
gas entry.
MAIN MENU
I/O FLO DSP EXIT
FLOW MENU 1
DGN UNT FM2 EXIT
Err: Mix=(110%)
OK
Methane = 65.5%
UP DN OK
Shows only if no error is
detected. Pressing OK
allows exit to menu.
Be sure mixture equals 100%.
OR
GAS=Air
NXT OK
Air
Methane
Gas Mix
MDot
Introduction | 14
Introduction
Fig. 1.7: MDot Menu Tree - MDot GasSelect Menu

MDot
Introduction | 15
Introduction
3124.6 SCFM
CSV = 0.3432 Volt
Engineering Screens: Press F1 & F2 at the same me
Press F4 to return to normal mode
Display 10
Display 11
Display 12
Display 13
Pulse=1234.5 cnt
mA_420=5500 cnt
Display 14
Elp=12.5 HR
Stat(hex)=2800
Display 15
Alm=None
MD V8.2
Display 16
Display 17
MB_Sn=P23949
BB_Sn=P23945
Display 18
MTR_Sn=123456
SNS_Sn=234567
Display 19
TmpHi=0.0 C
TmpLo=0.0 C
F2 KeyF1 Key
F3 & F4 pressed at the same me will
iniate a "Total" reset
Pwr_Cycl=24
Err_tot=0
FloHi=0.00 SCFM
FloLo=0.00 SCFM
MDot Cal= 0.1
Flow rate measured by the meter
Current Sense Voltage of sensor measurement circuit
Digital control counts of Pulse output
Digital control count of 4-20mA output
Elapsed me of meter operaon
Meter funcon and operaon status code
Meter’s acve alarms
Firmware version of meter
Main board serial number
Bridge board serial number
Meter serial number
Sensor serial number
Alarm seng
Alarm seng
Alarm seng
Alarm seng
Total number of power cycles
Number of errors in total flow measurement
MDot Cal measurement value
Fig. 1.8: MDot Menu Tree - Engineering Screens
3124.6SCFM
csv=0.3432Volt
EnterLogMenu:PressF1&F2atthesametime
PressF4toreturntonormalmode
Display10
Display11
Display12
Display13
Pulse=1234.5cnt
mA_420=234cnt
Display14
Elp=12.5HR
Stat(hex)=2800
Display15
Alarm=None
FT4XV5.3
Display16
Display17
MB_Sn=P23949
BB_Sn=P23945
Display18
MTR_Sn=123456
SNS_Sn=234567
Display19
TmpHi=0.0°F
TmpLo=0.0°F
F3&F4pressedatthesametimewill
initiatea"Total"reset
Pwr_Cycl=24
Err_tot=0
FloHi=0.00SCFM
FloLo=0.00SCFM
CAL‐V=0.1
PwrOff=48.0
LOGMENU1
LOGTOTENGEXIT
Day1=0SCF
NXTPRVEXIT
Day40=0SCF
NXTPRVEXIT
4024‐hourtotalslisted
PressF1tonavigateup
PressF2tonavigatedown
PressF4toreturntonormalmode
Flowratemeasuredbythemeter
CurrentSenseVoltageofsensormeasurementcircuit
DigitalcontrolcountsofPulseoutput
Digitalcontrolcountof4‐20mAoutput
Elapsedtimeofmeteroperation
Meterfunctionandoperationstatuscode
Meter’sactivealarms
Firmwareversionofmeter
Mainboardserialnumber
Bridgeboardserialnumber
Meterserialnumber
Sensorserialnumber
Alarmsetting
Alarmsetting
Alarmsetting
Alarmsetting
Totalnumberofpowercycles
Numberoferrorsintotalflowmeasurement
CAL‐Vmeasurementvalue
Elapsedtimeofmeterpoweroffinhours
ResetTotal?
NOYES
ResettingTotal

Fig. 1.9: MDot Menu Tree - Reset Flow Total

Welcome
Thank you for purchasing the MDot Thermal Gas Mass Flow Meter from Pulsar Measurement. The

has been invested to deliver advanced features, accurate measurement performance and outstanding
reliability.
This Instruction Manual contains the electrical and mechanical installation instructions as well as
details for programming, maintaining and troubleshooting the meter. This manual is divided into
the following sections: Introduction, Installation, Wiring, Operation, Communications, Maintenance,

Theory of Operation
The MDot is an innovative Thermal Mass Gas Flow Meter and Temperature Transmitter. It is

that gases absorb heat. A heated sensor placed in an air or gas stream transfers heat in proportion
to the stream’s mass velocity. There are two sensor elements. One sensor element detects the
gas temperature and a second element is maintained at a constant temperature above the gas


pressure range.
Mass Flow



As temperature and pressure changes, the gas volume changes but not its mass. Therefore a device


units (NM3/hr, NLPM) with no additional temperature or pressure measurements required.
Calibration Validation

Validation is to provide operators with the ability to verify that the meter is capturing accurate data
at scheduled recalibration times - or at any time - instead of sending the meter back to the factory

accurately by testing the functionality of the sensor and its associated signal processing circuitry. This
test can be done in the pipe under normal process conditions.
MDot
Introduction | 16
Introduction

Flow Calibration



application, the meter is ready to use. The Pulsar Measurement Calibration Lab maintains instrument

gas, line size and other information. All NIST-traceable equipment utilized for the calibration

I/O Description
The MDot features a galvanically isolated 4-20mA analog output with HART communication option

option for Modbus RTU (RS485). There is also a USB port for interfacing with a laptop or computer.
MDot View is a free, PC-based software program from Pulsar Measurement that interfaces to the


MDot
Introduction | 17
Introduction

Standard I/O
4-20 mA Flow or Temperature
Pulse or Alarm
USB (Mini-B)
(Free MDot View Software)
Outputs are Galvanically Isolated
Selectable Output Options
RS485 Modbus RTU
HART Communication
Standard Digital Communications
12-24V DC Input
Power
Display and
Configuration Panel
F1 F2 F3 F4
MDot Functional Diagram

time, process gas temperature, and alarms. The display is also used in conjunction with the


communication parameters, and alarm limits.
Fig. 1.10: MDot Function Diagram
Installation Scope
MDot
Introduction | 18
Introduction



For Insertion Types:
1. Determine lateral position on the pipe
2. Determine radial position of probe if moisture or condensation is present in the gas
3. Verify sensor installation depth
4. 
5. Determine if the display orientation must be changed
6. 
For Inline Types:
1. Determine lateral position on the pipe
2. 
3. Determine if the display orientation must be changed
4. 
Installation procedures must be performed using a combination of the end user’s best engineering
practices, in compliance with local codes, and with manufacturer’s recommendations.
General Precautions
The following general precautions should be observed:
1. 
enclosure.
2. 
application.
3. 
4. Mounting the MDot in direct sunlight can cause the temperature inside the enclosure to
increase beyond design limits, resulting in failure of LCD display and reduced component
life. It is recommended that a sunshade is installed to avoid direct sunlight (see maximum

5. 
in the pipe.
6. Do not install the MDot enclosure near an igniter, igniter-controller or switching
equipment.
7. Do not install an external power supply in a cabinet containing an igniter controller or
switching equipment.
8. 

9. 

or ejection of the probe from the pipe. For all applications above 60 psig, the standard
stainless steel ferrule is required.
Installation | 19
MDot
Installation

FLOW
10X Pipe ID min.
Proper
Flow
Profile
15X Pipe ID min.
F1 F2 F3 F4
FLOW
4X Pipe ID
Proper
Flow
Profile
8X Pipe ID
AnerFlow FC Flow Conditioner
installed between two flanges Proper
Flow
Profile
Irregular Flow
Profile
Branch Outlet
(installed by customer)
FLOW
5X Pipe ID min. 2X Pipe ID
Branch Outlet
(installed by
customer)
Irregular Flow
Profile
F1 F2 F3 F4
5X Pipe ID min.
F1 F2 F3 F4
Irregular Flow
Profile
INSERTION
INSERTION WITH
MDOT FC
INLINE
Instructions for Flow Meter Lateral Placement


Fig. 2.1: Upstream and Downstream Pipe IDs for Insertion and Inline Flow Meters
NOTE:
• Pipe ID = Inside Diameter
• The probe diameter is ¾"
• 
• See MDot FC installation instructions for more information
NOTE:
•
Pipe ID = Inside Diameter
•
The probe diameter is ¾"
•

•
See MDot FC installation instructions for more information
Alternate Installations - Vertical Pipes or Restricted Installation Spaces
When restricted physical installation space exists, the MDot can also be installed at other angles.
Please note that the display and the enclosure orientation can be rotated in 90° increments.
Fig. 2.3: Alternate Installation at 90° (CCW)
MDot
Installation | 20
MDot
Installation