TSI Instruments 4043 Bedienungsanleitung

GENERAL PURPOSE

THERMAL MASS FLOWMETER

MODEL 4040/4043/4045

OPERATION AND SERVICE MANUAL

P/N 1980339, REVISION J

FEBRUARY 2016

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GENERAL PURPOSE

THERMAL MASS FLOWMETER

MODEL 4040/4043/4045

OPERATION AND SERVICE MANUAL

P/N 1980339, REVISION J

FEBRUARY 2016

U.S. & INTERNATIONAL TSI Instruments Ltd. (UK)

Sales and Customer Service: Sales and Customer Service:

(800) 874-2811 / +1(651) 490-2811 +44 (0) 1494 459200

Fax: Fax:

+1(651) 490-3824 +44 (0) 1494 459700

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iii

CONTENTS

CHAPTERS

1 UNPACKING AND PARTS IDENTIFICATION ............................. 1

2 SETTING-UP ................................................................................. 3

Supplying Power ............................................................................ 3

Connecting Filter and Flow Tubes ................................................. 4

RS232 Configuration and Operation ............................................. 4

Configuration Software .................................................................. 5

3 OPERATION ................................................................................. 7

Overview ........................................................................................ 7

ON/OFF Switch ............................................................................. 7

Warm-up Time ............................................................................... 7

Flow Rate Measurement ............................................................... 7

Temperature Measurement ........................................................... 8

Pressure Measurement ................................................................. 8

Volume Measurement ................................................................... 8

4 MAINTENANCE ............................................................................ 9

Flow Sensor ................................................................................... 9

Re-certification ............................................................................... 9

Cases ............................................................................................ 9

Storage .......................................................................................... 9

5 TROUBLESHOOTING ................................................................ 11

APPENDIXES

A SPECIFICATIONS* ..................................................................... 13

B STANDARD FLOW RATE VS. VOLUMETRIC FLOW RATE.... 17

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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

Part/Model

Mass Flowmeter, 22 mm ISO tapered inlet/outlet

Mass Flowmeter, 0.50 inch inlet/outlet

Mass Flowmeter, 0.75 inch inlet/outlet

4040

4043

4045

Computer Cable

1303583

Analog Cable

1303584

Filter

22 mm ISO-taper (for Model 4040)

3/8” Female NPT (for Model 4043/45)

1602292

1602300

AC Adapter

100 to 240 V, N. America NEMA 5-15 plug, grounded

100 to 240 V, Europlug, CEE 7/16, grounded

100 to 240 V, Great Britain, grounded, fused

100 to 240 V, Australia/NZ

8918-NA

8918-EC

8918-GB

8918-AT

Operation and Service Manual

1980339

RS232 Serial Command Set manual

1980340

Carrying Case (optional accessory)

1319176

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Chapter 1

Parts Identification

Figure 1-1 Model 4040/4043/4045 Mass Flowmeter

1. On/Off Switch

4. DC Power Input

2. Display

5. Flow Inlet

3. Mounting Inserts (2)

6. Computer Serial Interface and

Analog Output and Optional

Power Input Connector

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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 TSI-supplied 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 2. List of Connector Pin-outs and

Cable Color Code Designations

Function

Cable Color

Code

Power Input (+)

Black

Power Ground (-)

Green

Analog Output (+)

Red

Analog Ground (-)

Brown

(no connection)

Blue

RS232 Receive (in)

White

RS232 Transmit (out)

Yellow

Logic Ground

Gray

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Chapter 2

Connecting Filter and Flow Tubes

The Models 4040/4043/4045 have an exposed thermal flow sensor,

which must be protected from foreign matter and particles in the gas

flow. TSI has supplied a filter, which 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

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.

Note: 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 flow rate, 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 3. Changeable Operating Parameters

Function

Command

Select Gas Calibration (air, oxygen, mixture)

Select Oxygen Concentration in Air (21% to 99%)

SGM

Select Standard or Volumetric Flow Measurement

LCD Display Update Rate (controls averaging)

SUR

Select Data Update Rate for Analog Output

SSR

Set Analog Output Full-Scale Flow Rate Value

SAS

Set Analog Output Zero Value

SAZ

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Operation

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:

1. If you only want to change one or more of the operating

parameters shown in Table 3 (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. 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.”

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Chapter 3

Operation

Caution

TSI flowmeters are not medical devices under

FDA 510k and in no situation should they be

utilized for human respiration measurements.

Overview

The Models 4040/4043/4045 Flowmeters measure mass flow rate,

temperature and absolute pressure of the gas inside the flow tube. All

measurements made by the Model 4040/4043/4045 are NIST

traceable.

ON/OFF Switch

Slide the switch to the ON position. The power switch is marked in the

international symbols '|' for on and 'O' for off. The flowmeter will begin

to simultaneously display flow rate, temperature and pressure.

Warm-up Time

The flowmeter will provide readings immediately upon power-up.

Recommended warm-up time of the flowmeter is 5 minutes.

Flow Rate Measurement

Flow rate data can be obtained from the Models 4040/4043/4045

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 300 Std L/min (Model 4043: 200 Std. L/min) (analog

output scaling is user selectable). Refer to the RS232 Serial

Command Set manual for instructions on how to obtain flow data

through the serial port.

Gas calibrations (air, 100% nitrogen, 100% oxygen, or air/oxygen

mixtures) can be selected through the RS232 serial port. Refer to the

RS232 Serial Command Set manual for instructions on how to select

gas calibrations. The LCD display will indicate the calibration being

utilized, air or O2. When air/oxygen mixtures are being measured, the

LCD display will illuminate both the air and oxygen symbols. When

nitrogen is selected no gas type is displayed on the LCD.

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Chapter 3

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 between the two measurements.

Selecting between the two measurements is accomplished through

the serial port. Refer to the RS232 Serial Command Set manual for

instructions on how to select between flow units.

Temperature Measurement

The Models 4040/4043/4045 have an independent temperature

transducer in the flow tube to measure the gas temperature. The

temperature sensor is used for temperature compensation of flow rate

and for converting flow from standard to volumetric units.

Temperature is displayed on the LCD and is available through the

RS232 serial port in the units of degrees Celsius (°C).

Note: At low flow rates, 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 4040/4043/4045 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 measurements are displayed on

the LCD display and are available through the RS232 serial port.

Volume Measurement

The Models 4040/4043/4045 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 Models

4040/4043/4045 RS232 Serial Command Set manual for instructions

on using the volume function.

*TSI instruments defines standard conditions as 21.1°C (70° F) and 101.3 kPa (14.7

psia, 1 bar).

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