TSI Instruments 4000 Series Guida

Mass Flowmeters

TSI Series 4000/4100

High Performance

Linear OEM Mass Flowmeter

(TSI Models 4021, 4024,

4121, and 4122)

Design Guide

1980430, Revision H

August 2010

SHIP/MAIL TO:

TSI Incorporated

500 Cardigan Road

Shoreview, MN 55126-3996

USA

Sales and Customer Service:

(800) 874-2811/(651) 490-2811

Fax:

(651) 490-3824

E-mail address:

flowmeters@tsi.com

Website:

http://flowmeters.tsi.com

INTERNATIONAL

Sales and Customer Service:

(+1) 651 490-2811

Fax:

(+1) 651 490-3824

LIMITATION OF WARRANTY AND LIABILITY (effective July 2000)

Seller warrants the goods sold hereunder, under normal use and service as described in the

operator's manual, shall be free from defects in workmanship and material for 90 days for OEM

components, from the date of shipment to the customer. This warranty period is inclusive of any

statutory warranty. 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. Parts repaired or replaced as a result of repair services are warranted to be free from

defects in workmanship and material, under normal use, for 90 days from the date of

shipment.

c. Seller does not provide any warranty on finished goods manufactured by others or on any

fuses, batteries or other consumable materials. 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, goods which are

incorporated into other products or equipment, or which are modified by any person other

than Seller. 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 LIMITATIONS stated

herein. NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR

PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE.

TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OF THE USER OR

BUYER, AND THE LIMIT OF SELLER'S LIABILITY FOR ANY AND ALL LOSSES,

INJURIES, OR DAMAGES CONCERNING THE GOODS (INCLUDING CLAIMS BASED

ON CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) SHALL

BE THE RETURN OF GOODS TO SELLER AND THE REFUND OF THE PURCHASE

PRICE, OR, AT THE OPTION OF SELLER, THE REPAIR OR REPLACEMENT OF THE

GOODS. IN NO EVENT SHALL SELLER BE LIABLE FOR ANY SPECIAL,

CONSEQUENTIAL OR INCIDENTAL DAMAGES. SELLER SHALL NOT BE

RESPONSIBLE FOR INSTALLATION, DISMANTLING OR REINSTALLATION COSTS

OR CHARGES. No Action, regardless of form, may be brought against Seller more than 12

months after a cause of action has accrued. The goods returned under warranty to Seller's factory

shall be at Buyer's risk of loss, and will be returned, if at all, at Seller's risk of loss.

Buyer and all users are deemed to have accepted 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, modified or its terms

waived, except by writing signed by an Officer 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 mal-

function is discovered, please contact your nearest sales office or representative, or call TSI at

(800) 874-2811 (USA) and (1) 651 490-2811.

CONTENTS

Chapter 1 - Models and Accessories..............................................1

Accessories..................................................................2

Model Designations .....................................................3

Chapter 2 - Measurements Available..............................................4

Flow Rate Measurement..............................................4

Temperature Measurement .........................................4

Volume Measurement..................................................5

Chapter 3 - Mechanical Interface.....................................................6

Overall Dimensions......................................................6

Inlet / Outlet Connections.............................................7

Inlet / Outlet Adapter Dimensions................................8

Chapter 4 - Design Considerations, Mechanical ...........................9

Important Safety Notes................................................9

Filtration Requirements................................................9

Inlet / Outlet Screens .................................................10

Inlet Flow Conditioning...............................................11

Liquids........................................................................11

Flow Reversal/Direction - Pumps...............................12

Mounting Orientation..................................................12

Pressure Drop............................................................12

Chapter 5 - Design Considerations, Electrical............................ 13

Power Requirements................................................. 13

Grounding Scheme................................................... 13

Output Signal, Analog............................................... 13

Digital Interfaces........................................................ 14

Pin-out for Mini-DIN Connector................................. 16

Chapter 6 - I/O Signal Description................................................ 18

RS-232 Bi-Directional Interface................................. 18

Analog Output of Mass Flow Rate............................ 18

Optional User-Supplied Pressure Signal .................. 18

Chapter 7 - Specifications............................................................. 20

Appendix A - Back-Pressure and Barometric Pressure -

Effect on Accuracy................................................ 28

Appendix B - Standard Flow Rate vs. Volumetric Flow rate...... 32

Appendix C - Digital Serial Interface............................................ 34

Command Set Summary........................................... 34

Command Set ........................................................... 38

Error Codes............................................................... 62

Chapter 1 - Models and Accessories

The TSI Series 4000/4100 High Performance Linear OEM Mass

Flowmeter is available in the following model numbers: 4021, 4024,

4121, and 4122.

Models 4121

4122

Models 4021

4024

Accessories

Interface Cable, mini-DIN -to- tinned wire: TSI Part Number 1303584

Model Designations

Model Gas Calibration Flow Range Inlet Adapter Outlet Adapter

40211 Air 0 to 300

standard L/min

22 mm ISO

tapered

Male

22 mm ISO

tapered

Male

40212 Oxygen

40241 Air 0 to 300

standard L/min

0.75 inch

(19.1 mm)

straight

0.75 inch

(19.1 mm)

straight

40242 Oxygen

40246 Nitrogen*

41211 Air 0.01 to 20

standard L/min

0.25 inch

(6.4 mm)

straight

0.25 inch

(6.4 mm)

straight

41212 Oxygen

41216 Nitrogen*

41221 Air 0.01 to 20

standard L/min

0.375 inch

(9.53 mm)

straight

0.375 inch

(9.53 mm)

straight

41222 Oxygen

41226 Nitrogen*

*Nitrogen models are calibrated in air and a nitrogen correction is applied by the meter.

Chapter 2 - Measurements Available

Flow Rate Measurement

Flow rate data can be obtained through the linearized analog output

or via the serial interfaces.

Flow rate can be output in units of standard liters per minute (Std

L/min*) or in volumetric units of liters per minute (L/min). Refer to

Appendix C for a description of the two measurements. Selecting

between the two measurements is accomplished through the serial

interfaces. Refer to the Command Set section for instructions.

*TSI instruments define standard conditions as 21.1°C (70° F) and

101.3 kPa (14.7 psia, 1 bar).

Temperature Measurement

These flowmeters have an independent sensor in the flow tube to

measure the gas temperature. The information is used for internal

temperature compensation of the flow sensor element and for

converting flow from standard to volumetric units. This flow

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