TSI Model 4140/4143 General Purpose Thermal Mass Flowmeter

Mass Flowmeters
Model 4140/4143
General Purpose
Thermal Mass Flowmeter
Operation and Service Manual
1980383, Revision C
April 2003
TSI Model 4140/4143
General Purpose
Thermal Mass Flowmeter
Operation and Service
Manual
April 2003
P/N 1980383
Revision C
MAIL/SHIP TO:
TSI Incorporated
500 Cardigan Road
Shoreview, MN 55126-3996
USA
U.S.
Sales and Customer Service:
800-874-2811 or 651-490-2811
Fax: 651-490-3824
E-mail address:
flowmeters@tsi.com
Web site:
http://flowmeters.tsi.com
INTERNATIONAL
Sales and Customer Service:
+1 651-490-2811
Fax: +1 651-490-3824
EUROPE
Sales and Customer Service:
+46-18-52-70-00
Fax: +46-18-52-70-70
Copyright
TSI Incorporated / 2003 / All rights reserved.
Address
TSI Incorporated, 500 Cardigan Road, Shoreview, MN 55126 USA
WARNING
!
TSI flowmeters employ a heated platinum sensor.
They should not be used with flammable or explosive
gasses or mixtures.
Caution
!
TSI flowmeters are not medical devices under FDA
510k and in no situation should they be utilized for
human respiration measurements.
LIMITATION OF WARRANTY AND LIABILITY. Seller warrants that this product, under normal use
and service as described in the operator's manual, shall be free from defects in workmanship and material for
a period of twelve (12) months, or the length of time specified in operator's manual, from the date of shipment
to the customer. This limited warranty is subject to the following exclusions:
a. Batteries and certain other components when indicated in specifications are warranted for a period of 90
days from the date of shipment to the customer.
b. With respect to any repair services rendered, Seller warrants that the parts repaired or replaced will be
free from defects in workmanship and material, under normal use, for a period of 90 days from the date
of shipment to the customer.
c. Seller does not provide any warranty on finished goods manufactured by others. Only the original
manufacturer's warranty applies.
d. Unless specifically authorized in a separate writing by Seller, Seller makes no warranty with respect to,
and shall have no liability in connection with, any goods which are incorporated into other products or
equipment by the Buyer. All goods returned under warranty shall be at the Buyer’s risk of loss, Seller’s
factory prepaid, and will be returned at Seller’s risk of loss, Buyer’s factory prepaid.
The foregoing is IN LIEU OF all other warranties and is subject to the conditions and LIMITATIONS stated
herein. NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE
OR MERCHANTABILITY IS MADE.
THE EXCLUSIVE REMEDY OF THE USER OR PURCHASER, AND THE LIMIT OF THE LIABILITY
OF SELLER FOR ANY AND ALL LOSSES, INJURIES, OR DAMAGES IN CONNECTION WITH THIS
PRODUCT (INCLUDING CLAIMS BASED ON CONTRACT, NEGLIGENCE, STRICT LIABILITY,
OTHER TORT, OR OTHERWISE) SHALL BE THE RETURN OF THE PRODUCT TO THE FACTORY
OR DESIGNATED LOCATION AND THE REFUND OF THE PURCHASE PRICE, OR, AT THE
OPTION OF SELLER, THE REPAIR OR REPLACEMENT OF THE PRODUCT. IN NO EVENT SHALL
SELLER BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTlAL DAMAGES. SELLER
SHALL NOT BE RESPONSIBLE FOR INSTALLATION, DISMANTLING, REASSEMBLY OR
REINSTALLATION COSTS OR CHARGES. NO ACTION, REGARDLESS OF FORM, MAY BE
BROUGHT AGAINST THE SELLER MORE THAN ONE YEAR AFTER THE CAUSE OF ACTION HAS
ACCRUED.
The purchaser and all users are deemed to have accepted the terms of this LIMITATION OF WARRANTY
AND LIABILITY, which contains the complete and exclusive limited warranty of Seller. This LIMITATION
OF WARRANTY AND LIABILITY may not be amended or modified nor may any of its terms be waived
except by a writing signed by an authorized representative of Seller.
Service Policy
Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our customers, our
service policy is designed to give prompt attention to any problems. If any malfunction is discovered, please
call TSI's Customer Service department at 1-651 490-2811.
CONTENTS
CHAPTERS
1
UNPACKING AND PARTS IDENTIFICATION............................1
2
SETTING-UP................................................................................5
Supplying Power...........................................................................5
Connecting Filter and Flow Tubes................................................6
RS232 Configuration and Operation ............................................6
Configuration Software.................................................................7
3
OPERATION ................................................................................9
Overview.......................................................................................9
ON/OFF Switch ............................................................................9
Flowrate Measurement.................................................................9
Temperature Measurement........................................................10
Pressure Measurement ..............................................................10
Select Measurement Displayed..................................................10
Display “Scroll” Mode .................................................................10
Volume Measurement ................................................................10
4
MAINTENANCE .........................................................................11
Flow Sensor................................................................................11
Re-certification............................................................................11
Cases .........................................................................................11
Storage .......................................................................................11
5
TROUBLESHOOTING...............................................................13
APPENDIXES
A
SPECIFICATIONS .....................................................................15
B
STANDARD FLOWRATE VS. VOLUMETRIC FLOWRATE.....19
i
Chapter 1
Unpacking and Parts Identification
Carefully unpack the instrument and accessories from the shipping container.
Check the individual parts against the list of components in Table 1. If any
parts are missing or damaged, notify TSI immediately.
Table 1. List of Components
Qty
Item Description
1
Part/
Model
4140
Mass Flowmeter, 0.25 inch inlet/outlet
(Air, Oxygen, Nitrogen)
Mass Flowmeter, 0.25 inch inlet/outlet
41403
(Air, Oxygen, Nitrogen, Nitrous Oxide)*
Mass Flowmeter, 0.375 inch inlet/outlet
4143
(Air, Oxygen, Nitrogen)
Mass Flowmeter, 0.375 inch inlet/outlet
41433
(Air, Oxygen, Nitrogen, Nitrous Oxide)*
1
Filter
Model 4140: 60 mm ULPA filter with 0.25 inch barbed
1602317
fittings
Model 4143: 63 mm HEPA filter with 0.375 inch barbed
1602342
fittings
1
AC Adapter
8918-US
115 V, North America, ungrounded
8918-NA
100–240 V, NEMA 5-15 plug, grounded
8918-EC
100–240 V, Europlug, CEE 7/16, grounded
8918-GB
100–240 V, Great Britain, grounded, fused
8918-AT
100–240 V, Australia/NZ
1
Operation and Service Manual for Model 4140/4143
1980383
1
RS232 Serial Command Set Manual, 4000/4100
1980340
*Other than the specifications in Appendix A, all references to 4140 and
4143 in this manual apply to the 41403 and 41433, respectively.
Table 2. Optional Accessories
Item Description
Computer Cable, mini-DIN to 9-pin RS-232
Analog Cable, mini-DIN to cable with tinned wires
Carrying Case for Model 4140/4143
Part/Model
1303583
1303584
1319201
1
2
Parts Identification
Figure 1-1 Model 4140/4143 Mass Flowmeter
1. On/Off Switch
2. Display
3. Mounting Inserts (2)
Operation
4. DC Power Input
5. Flow Inlet
6. Computer Serial Interface,
Analog Output, and Optional
Power Input Connection
3
Chapter 2
Setting-Up
Supplying Power
The flowmeter can be powered in one of two ways: through the power jack
using the supplied AC adapter or through the mini-DIN connector. The DC
power input connector is shown below along with the power requirements.
Power Supply: 7.5 VDC ± 1.5 V, 300 mA maximum
When supplying power through the optional TSI interface cable, line up the
arrow on the connector with the bottom side of the flowmeter. Flowmeter
connector pin-out designations are shown below.
Table 3. Connector Pin-out and Color Code for TSI
Cable PN 1303584
Pin
1
2
3
4
5
6
7
8
Function
Power Input (+)
Power Ground (-)
Analog Output (+)
Analog Ground (-)
(no connection)
RS232 Receive (in)
RS232 Transmit (out)
Logic Ground
Cable Color Code for
TSI Cable PN 1303584
Black
Green
Red
Brown
Blue
White
Yellow
Gray
5
Connecting Filter and Flow Tubes
The Model 4140/4143 has a thermal sensor exposed to the gas flow that
must be protected from foreign matter and particles. TSI supplies a filter
that should be connected to the inlet of the flowmeter, however, any filter
will work as long as it has a minimum efficiency of 99.9%.
Caution
!
Note:
Always use a filter on the inlet of the flowmeter.
Failure to filter the gas flow may change the calibration
and/or permanently damage the sensor.
Flow direction is identified by the large arrow printed on the
bottom side of the flowmeter.
After attaching the filter connect the flow tube to the inlet of the filter.
Connecting a tube to the outlet of the flowmeter will create back pressure.
See Appendix A for flowmeter accuracy specifications when operating at
various pressures. In general, minimize back pressure on the flowmeter to
maintain higher accuracy.
RS232 Configuration and Operation
Many flowmeter operating parameters can be easily configured through the
RS232 serial port. Likewise, the flowrate, temperature, pressure, and
volume can be read through the serial port. Refer to the Series 4000/4100
RS232 Serial Command Set manual for a detailed description of the
commands and command syntax.
RS232 Settings:
Baud Rate........ 38.4 k
Data Bits .......... 8
Parity................ None
Stop Bits .......... 1
Flow Control..... None
Table 4. Changeable Operating Parameters
Function
Select Gas Calibration air, O2, N2, or N2O(if available)
Select Standard or Volumetric Flow Measurement
LCD Display Update Rate (controls averaging)
Select Measurement Display Scroll Mode
Select Measurement Displayed on LCD Display
Select Measurement Units on LCD Display
Select Data Update Rate for Analog Output
Set Analog Output Full-Scale Flowrate Value
Set Analog Output Zero Value
6
Command
SGn
SUn
SURnnnn
SDMFTPn
SDMm
SDUn
SSRnnnn
SASnnn
SAZnnn
Configuration Software
TSI has several software utilities to help you communicate with your
flowmeter to change parameters and to obtain flow data. You can download
the latest versions of these at no charge from our web site:
http://flowmeters.tsi.com
1. If you only want to change one or more of the operating parameters
shown in Table 4 (above), the easiest way is to use the software utility
called “TSI setup.” This uses convenient drop-down menus to help
change these parameters. After you have made your changes, be sure to
click on “Send” to store the changes in the flowmeter’s memory.
2. If you want to communicate directly with the flowmeter using the basic
RS232 commands shown in the Serial Command Set Manual, you can
use a terminal program. HyperTerminal is a common terminal program
that is included with most versions of the Microsoft operating system.
Setting up HyperTerminal to communicate with your flowmeter can
sometimes be confusing. You can download a document from our web
site that helps you configure HyperTerminal. Download the document
called “Using HyperTerminal to communicate with TSI Flowmeters.”
Operation
7
3. If you plan to develop a more sophisticated program for data collection
and control using LabVIEW, you can download a demonstration program
called “Real-time Demo Program” and the source code “Source Code
for Real-time Demo Program.” This program is intended to be a basic
demonstration program and not a practical laboratory tool. It does,
however, have a convenient implementation of the VOLUME
measurement function that can be useful for basic tests.
8
Chapter 3
Operation
Overview
The Model 4140/4143 Flowmeter measures mass flowrate, temperature and
absolute pressure of the gas inside the flow tube. All measurements made by
the Models 4140/4143 are NIST traceable.
ON/OFF Switch
Slide the switch to the ON position.
Flowrate Measurement
Flowrate data can be obtained from the Model 4140/4143 through the LCD
display, RS232 serial port, or the linearized analog output. The analog
output is a 0 to 10 volt DC linear signal representing 0 to 20 Std L/min. The
analog output scaling is user selectable. Refer to the Series 4000/4100
RS232 Serial Command Set manual for instructions on how to obtain flow
data through the serial port.
Gas calibrations (air, 100% O2, 100% N2 or 100% N2O) can be selected
through the RS232 serial port. Refer to the Series 4000/4100 RS232 Serial
Command Set manual. The LCD display will indicate the calibration being
utilized: air, O2, N2, or N2O.
Flow can be displayed in units of standard liters per minute (Std L/min*) or
in volumetric units of liters per minute (L/min). Refer to Appendix B for a
description of the two measurements. Selecting between the two
measurements is accomplished through the serial port. Refer to the Series
4000/4100 RS232 Serial Command Set manual for instructions on how to
select between flow units.
*TSI instruments define standard conditions as 21.1°C (70° F) and 101.3 kPa
(14.7 psia, 1 bar).
9
Temperature Measurement
The Model 4140/4143 has an independent temperature sensor in the flow
tube to measure the gas temperature. The temperature sensor is used for
temperature compensation of flowrate and for converting flow from standard
to volumetric units. Temperature can also be displayed on the LCD and is
available through the RS232 serial port in the units of degrees Celsius (°C).
Note:
At low flowrates, the temperature inside of the flow tube will
increase because of the heat generated by the thermal flow
sensor. This effect is normal and the temperature of the
incoming gas will be measured once flow resumes.
Pressure Measurement
The Models 4140/4143 measure absolute pressure near the outlet of the
flowmeter in the SI units of kilo-Pascals (kPa). Pressure measurements are
required when converting from standard to volumetric flow. Absolute
pressure can be displayed on the LCD and is available through the RS232
serial port.
Select Measurement Displayed
By using RS232 commands the LCD display can be set up to continuously
display either flowrate, temperature, or pressure. See the SDMm command
in the Series 4000/4100 Serial Command Set manual.
Display “Scroll” Mode
By using RS232 commands the LCD display can be set up to continuously
scroll between flowrate, temperature, and pressure. The scroll rate is
adjustable and the user can specify the parameters to be displayed. See the
SDMFTPn command in the Series 4000/4100 Serial Command Set manual.
Volume Measurement
These flowmeters measure total volume by integrating flow over time. This
is a calculated measurement performed by the flowmeter and is only
available using the RS232 serial port. Volume is not displayed on the LCD
display. Refer to the Series 4000/4100 RS232 Serial Command Set manual
for instructions on using the volume function.
10
Chapter 4
Maintenance
Flow Sensor
Periodically inspect the flow sensor by looking into the outlet of the
flowmeter. Remove dust, particles and fibers from the sensor with clean, dry
compressed air. The flow sensor will break if touched. Never run liquids
through the flowmeter and never touch the sensor with a brush. Dust or
other deposits on the flow sensor will degrade the 4140/4143’s flow
accuracy.
Caution
!
The flowmeter must be switched off for cleaning.
Only use clean, dry, compressed air when attempting to
remove contamination from the sensor.
Re-certification
To maintain a high degree of confidence in the measurements made by the
Model 4140/4143, TSI recommends that the instrument be returned to TSI
every 12 months for re-certification. The flowmeter will be recalibrated and
returned with a certificate of calibration to US National Institute of
Standards Technology (NIST) traceable standards.
Cases
If the instrument case or storage case needs cleaning, wipe it off with a soft
cloth dipped in isopropyl alcohol or mild detergent. Never submerge the
flowmeter or allow liquids to enter the flow tube.
Storage
When storing the flowmeter, always cover the ends of flow tubes with the
caps provided to prevent dust or other foreign matter from entering the tube.
11
Chapter 5
Troubleshooting
Table 4 lists the symptoms, possible causes, and recommended solutions for
common problems encountered with Series 4100 flowmeters. If the
symptom is not listed, or if none of the solutions solves the problem, please
contact TSI Customer Support at 1-800-874-2811 or 651-490-2811.
Table 4. Troubleshooting
Symptom
Possible Causes
No display.
Unit not switched on.
Corrective Action
Switch on the unit.
No power to instrument.
Plug in AC adapter or
check power source on
mini-DIN connector.
Temperature
reads high at low
or zero flows.
Temperature sensor is
being heated from the
flow sensor.
The temperature value
will track the actual gas
temperature once the
flowrate through the
flowmeter exceeds
1 Std L/min.
Flow readings
fluctuate greatly.
The flow is fluctuating.
Improve inlet conditions
or increase display
averaging time.
Display shows
flows over-range
with no flow
passing through
flow tube.
The sensor may be
damaged or broken.
Return flowmeter to TSI
for service.
13
Appendix A
Specifications
Specifications*
Flow Measurement
Measurement Range
Accuracy
Air and 100% O2
100% N2
100% N2O (41403 and
41433 only)
0.01 to 20 Std L/min.
2% of reading or .005 Std L/min, whichever is greater,
3% of reading or .010 Std L/min, whichever is greater,
3% of reading or .010 Std L/min, whichever is greater,
at standard conditions (21.1°C and 101.3 kPa)
See notes 1 through 6 below.
Resolution (Display)
Response
0.001 Std L/min between 0.01 and 9 Std L/min
0.01 Std L/min between 9 and 20 Std L/min
Less than 4 msec, 63% of final value at full scale flow
Temperature
Measurement
Measurement Range
Accuracy
Resolution (Display)
Response
Static Pressure
Measurement
Measurement Range
Accuracy
Resolution (Display)
Response
Over Pressure
Burst Pressure
Pressure Drop
Volume
Measurement Range
Accuracy
Air and 100% O2
100% N2
100% N2O (41403 and
41433 only)
Instrument Temp. Range
Operation, Ambient
Storage, Ambient
0 to 50°C
±1°C, at flows greater than 1 L/min. See note 2 below.
0.1°C
Less than 75 msec, 63% of final value for 20°C step change
in temperature at full scale flow
Measured inside flow tube near the exit
50 to 199 kPa Absolute
±1 kPa, See note 7 below.
0.1 kPa
Less than 4 msec.
63% of final value for 30 kPa step change
620 kPa
Tested to 690 kPa without rupture.
Do not exceed 690 kPa.
See Chart.
0.0001 to 99.999 Liters
2% of Reading at flows greater than 2.5 Std L/min
3% of Reading at flows greater than 2.5 Std L/min
3% of Reading at flows greater than 2.5 Std L/min
See notes 1 through 5 below.
0 to 50°C
-20 to 60°C
15
Gas Calibrations
Physical Dimensions
External Dimensions
Tube Adapters
(Inlet & Outlet)
Weight
Flow Body Material
Computer Interface
Analog Output (Flow Only)
Range
Resolution
Maximum Current
Flow Accuracy
Power
Specifications*
Air, O2, N2, N2O (41403 and 41433 only),
User selectable through serial port
See Diagram
Model 4140/41403: 0.25 inch O.D. straight
Model 4143/41433: 0.375 inch O.D. straight
86 grams
Polycarbonate
Connector
Type
Baud Rate
Data Bits
Parity
Stop Bits
Flow Control
8 pin mini-DIN
RS232 Serial
38,400
8
None
1
None
0 to 10 V
13 bit
10 ma
See note 6 below.
AC adapter or power supplied through mini-DIN
7.5 VDC ± 1.5 V, 300 mA maximum
Notes:
1
2
3
4
5
6
7
Accuracy stated at standard conditions of 21.1°C and 101.3 kPa.
•
Add an additional 0.0003 Std L/min or 0.075% of reading, whichever
is greater, per 1°C away from standard conditions when operating
within the range of 0°C to 50°C.
•
Add an additional 0.015% of reading per 1 kPa above 101.3 kPa or
•
Add an additional 0.022% of reading per 1 kPa below 101.3 kPa
when operating within the pressure range of 70 kPa to 170 kPa.
Accuracy stated with gas temperature and flow body temperature within
±10°C of one another.
Accuracy stated measuring dry gas (less than 10% R.H.).
Includes ±0.5% of reading repeatability.
Volumetric flowrate is calculated from the mass flow measurement. Add
an additional 0.25% of reading to the flow accuracy to account for the
uncertainty in measuring gas temperature and pressure.
For analog output, accuracy offset increases from 0.05 to 0.1 Std L/min.
Add uncertainty of 0.2 kPa for every 10°C away from 21.1°C.
*Specifications subject to change without notice.
16
Pressure Drop (cm H20)
4140/4143 Pressure Drop
90
80
70
60
50
4140
4140 w ith filter
40
30
20
4143
4143 w ith filter
10
0
0
10
20
30
Flow (SLPM)
Figure A-1 Pressure Drop
Mounts use 6-32 UNF Screws
Figure A-2 Model 4140/4143 Dimensions
17
Appendix B
Standard Flowrate vs. Volumetric Flowrate
Since thermal flow sensors are sensitive to changes in air density and air
velocity, all thermal flowmeters indicate flowrates with reference to a set of
standard conditions. For TSI instruments, standard conditions are defined as
21.1° C (70° F) and 101.3 kPa (14.7 psia). Other manufacturers may use
different values.
Standard flowrate is the flowrate the air would be moving if the temperature
and pressure were at standard conditions. It is usually the most useful
measure of airflow because it defines the heat-carrying capacity of the air.
Volumetric flowrate is the true volume flow of the gas exiting the flowmeter.
In some instances, volumetric flowrate rather than standard flowrate may be
of interest. To display volumetric flowrate, the Model 4140/4143 will
multiply the standard flow measurement by the following density correction
factor:
 273.15 + Tm  101.3
Volumetric Flow = ( StdFlow) 
 273.15 + 21.11 Pm
Where
Tm = Gas temperature measured in flow tube in units of degrees Celsius
Pm = Absolute pressure measured in flow tube in units of kPa
To demonstrate the difference in output, consider the following.
Measured flow displays 10 Std L/min at 15C and 117kPa. The volumetric
flow as calculated by the Model 4140/4143 would be as follows.
 273.15 + 15  101.3
Volumetric Flow = (10) 
= 8.478L / min
 273.15 + 21.11 117
19
TSI Incorporated
500 Cardigan Road, Shoreview, MN 55126 U.S.A.
Web: www.tsi.com
Open as PDF
Similar pages