TSI Instruments PORTACOUNT 8020 Montage- und Bedienungsanleitung

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 1

www.tsi.com

PORTACOUNT®Plus Model 8020

Technical Addendum

(includes the N95-Companion™ Model 8095)

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 2

INTRODUCTION

This document is a addendum to the PortaCount Plus®Model 8020 Operation

and Service Manual (TSI p/n 1980092). It contains detailed technical information

that is not normally needed by persons using the PortaCount Plus for respirator

fit testing. Persons who will find this document of interest include respirator

manufacturers, respiratory protection researchers, and persons conducting

general ultrafine particle studies not related to respirator fit testing.

The most recent version of this document as well as the PortaCount Plus Model 8020

Operation and Service Manual can be obtained from the TSI Web site www.tsi.com.

CONTENTS

Dip Switch Settings.............................................................. 3

Serial Interface Output......................................................... 7

Data and Accessory Port Pin Assignments........................ 10

Computer Interface Cables ................................................ 10

Remote Control via Computer............................................ 12

N95-Companion................................................................. 23

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 3

DIP SWITCH SETTINGS

LASER CAUTION

This instrument is a Class I laser device. Adjustments or performance of procedures

other than those specified herein may result in hazardous radiation exposure.

There is a bank of 8 DIP switches located inside the PORTACOUNT Plus. To gain access to

the switches you must separate the top and bottom halves of the enclosure. Follow the

instructions below:

1. Turn the PORTACOUNT Plus off.

2. Turn the PORTACOUNT Plus over so that it is face down and locate the four screws

on the bottom that hold the two halves of the enclosure together. Remove all four

screws.

3. Turn the PORTACOUNT Plus right side up while holding the two halves of the

enclosure together so they do not separate.

4. Gently lift the top half of the case and set it down just to the left of the unit.

Notice that there is a ribbon cable connecting the top and bottom half together.

Try not to pull on the ribbon cable. You do not need to disconnect the ribbon

cable from the circuit board.

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 4

5. The DIP switches are located

towards the bottom of the circuit board

just to the left of center. Make sure the

PORTACOUNT Plus is always off when

changing DIP switch settings.

There are 8 DIP switches. The top

switch is number 1 and the bottom

switch is number 8. A switch is

considered to be "ON" when the right

side is pushed down and "OFF" when

the left side is down.

As shipped from the factory, the DIP

switches are set as follows:

Switch Number Factory Setting

1ON

2OFF

3ON

4ON

5ON

6ON

7ON

8ON

The function of each of the DIP Switches is as follows. Factory settings are shown in

BOLD type:

DIP Switches 1, 2 and 3: Baud Rate

Switches 1, 2 and 3 control the Baud rate used by the RS-232C Data Port. The factory

setting is for 1200 Baud. If you change the Baud rate of the PORTACOUNT Plus, you must

also change the Baud rate of devices that communicate with the instrument such as a

printer or computer. You should leave the Baud rate set at 1200 unless you have a good

reason to change it. The switch settings for various Baud rates are:

Baud Rate Switch 1 Switch 2 Switch 3

300 ON ON ON

600 OFF ON ON

1200 ON OFF ON

2400 OFF OFF ON

9600 OFF ON OFF

All Baud rates use 8 data bits, no parity, 1 stop bit. Switch combinations not shown are

undefined.

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 5

DIP Switch 4: Memory Lock

Switch 4 allows you to lock the PORTACOUNT Plus memory so that the internal settings for

the sampling times, fit factor pass level and number of exercises cannot be changed from

the PORTACOUNT Plus Keypad or by using the MODIFY program software supplied with

the instrument. The reason you might want to lock memory is to prevent unauthorized

persons from altering the fit test protocol. The factory setting for switch 4 is ON which

means that memory lock feature is OFF and the internal settings can be changed using the

Keypad or software. The FitPlus software is not affected by DIP switch 4.

Memory Switch 4

Unlocked ON

Locked OFF

DIP Switch 5: Factory Checkout

Switch 5 is used by TSI when performing factory checkout of the PORTACOUNT Plus and

should always be in the ON position for normal use.

Mode Switch 5

Checkout OFF

Normal ON

DIP Switch 6: Reset Factory Settings on Power Up

Switch 6 should always be left ON unless you want to reset all the internal settings back

to the way they were when the PORTACOUNT Plus was new.

When switch 6 is OFF, the PORTACOUNT Plus will reset back to the factory settings when

the power is turned on. Once the power is turned back on, you will be able to change the

internal settings (unless switch 4 is OFF), but they will be reset to the factory values the

next time the power is turned off and then on again.

If you want to reset the internal settings back to the factory values, move switch 6 to the

OFF position and then start the PORTACOUNT Plus. Now turn the PORTACOUNT Plus off and

change switch 6 back to the ON position. The instrument will be reset and you will be

able to permanently change the internal settings. The factory settings are:

Fit Factor Pass Level: 100

Number of exercises: 8

Ambient Purge Time 4 sec

Ambient Sample Time 5 sec

Mask Purge Time 11 sec

Mask Sample Time, All exercises: 40 sec

DIP Switch 7: Reserved

Switch 7 must always be left ON.

DIP Switch 8: Use CTS

When switch 8 is on (the factory setting), the PORTACOUNT Plus will not require a Clear

To Send (CTS) signal in order to send data through the RS-232C Data Port to a

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 6

peripheral device. When switch 8 is OFF, the CTS signal will be required. The CTS

signal is always required when the PORTACOUNT Plus is in External Control Mode

regardless of the position of switch 8.

CTS Signal Switch 8

Not required ON

Required OFF

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 7

SERIAL INTERFACE OUTPUT

Output in Fit Test Mode

An example of the printout from a eight exercise fit test is shown below. All characters

are ASCII. Each line is terminated with both carriage return (0D hex) and line feed (0A

hex) characters. The comments to the right side do not print.

COMMENTS

NEW TEST PASS = 100Start of new test

Ambient 4750 #/cc Ambient concentration

Mask 11.30 #/cc Mask concentration

Ambient 4800 #/cc Ambient concentration

FF 1 422 PASS Fit factor exercise 1

Mask 5.20 #/cc

Ambient 4700 #/cc

FF 2 894 PASS Fit factor exercise 2

Mask 9.80 #/cc

Ambient 5000 #/cc

FF 3 505 PASS Fit factor exercise 3

Mask 4.10 #/cc

Ambient 5100 #/cc

FF 4 1231 PASS Fit factor exercise 4

Mask 7.90 #/cc

Ambient 4900 #/cc

FF 5 610 PASS Fit factor exercise 5

Mask 13.50 #/cc

Ambient 4800 #/cc

FF 6 359 PASS Fit factor exercise 6

Mask 9.80 #/cc

Ambient 5000 #/cc

FF 7 505 PASS Fit factor exercise 7

Mask 11.30 #/cc

Ambient 4800 #/cc

FF 8 422 PASS Fit factor exercise 8

Overall FF 612 PASS Overall fit factor

Output in Count Mode

The PORTACOUNT Plus sends ASCII characters through the Data Port in the following

format while in 1-Second Count Mode. Each line is terminated with both carriage return

(0D hex) and line feed (0A hex) characters. A line of data is transmitted every 2-seconds

instead of every second to accommodate slow printers. When in 1-Second Count Mode

the Display show 1-second averages updated every second. The Data Port transmits 2-

second averages updated every 2-seconds.

Conc. xxxxxx #/cc

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 8

In 15-Second Count Mode, the ASCII output is in the following format. Each line is

terminated with both carriage return (0D hex) and line feed (0A hex) characters. A line

of data is transmitted every 15-seconds.

Ave. Conc. xxxxxx #/cc

The "xxxxxx" is the numeric particle concentration in particles per cubic centimeter.

Concentrations from 100 up to 999999 are formatted as integers, values below 100 have

two decimal places. For example, a concentration of 87 would be transmitted as:

Conc. 87.00 #/cc

Output During the 60-Second Warm-up

During the initial 60-second warm-up period, the PORTACOUNT Plus automatically

transmits status information that shows the internal memory settings. The settings reflect

how the PORTACOUNT Plus memory is set at the moment and can be changed. For

example, when all settings are at the factory settings, the data will transmit as follows:

NOTE: If the optional Model 8095 N95-Companion is attached and active, the

printout will show the timing used with the N95-Companion. These

settings are different than those used by the PORTACOUNT alone.

PORTACOUNT PLUS PROM Vx.x

Serial Number xxxxx

FF pass level = 100

No. of exercises = 6

Ambient purge = 4 sec.

Ambient sample = 5 sec.

Mask purge = 11 sec.

Mask sample 1 = 40 sec.

Mask sample 2 = 40 sec.

Mask sample 3 = 40 sec.

Mask sample 4 = 40 sec.

Mask sample 5 = 40 sec.

Mask sample 6 = 40 sec.

Mask sample 7 = 40 sec.

Mask sample 8 = 40 sec.

DIP switch = 10111111

•Each line is terminated with both carriage return (0D hex) and line feed (0A hex)

characters.

•The mask sample times are transmitted only for the number of exercises set.

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 9

•DIP Switches are considered ON if set to 1 and OFF if set to 0. DIP Switches are

numbered 1 - 8 from left to right on the printout and 1 - 8 from top to bottom on the

circuit board.

Output When a Battery Runs Low

The PORTACOUNT Plus will turn itself off when a battery runs out of power. Just before it

turns off the following message is transmitted:

Low Battery

PORTACOUNT®Plus Model 8020 Technical Addendum revised 7-27-2001

TSI Incorporated, St. Paul, Minnesota, USA 10

DATA and ACCESSORY PORT PIN ASSIGNMENTS

The PORTACOUNT Plus features bi-

directional RS-232C communications

through the Data Port. The Accessory

Port is used to interface with the N95-

Companion accessory.

The PORTACOUNT Plus Data Port uses a

modular RJ-45 connector with 8

contacts. The contacts are numbered 1

through 8 from left to right when viewed

as shown.

The PORTACOUNT Plus Accessory Port

"ACCY" is a 6-pin MMJ modified

modular connector. Contact 1 is on the left when viewed as shown.

Data Port Pin Assignments

Contact

Number Function Direction

1 Not used

2 Ready (DTR) From PORTACOUNT Plus

3 Receive data (Rx) To PORTACOUNT Plus

4 Not Used

5 Transmit data (Tx) From PORTACOUNT Plus

6 Not Used

7 Signal Ground (G)

8 Clear to send (CTS) To PORTACOUNT Plus

PortaCount Accessory Port Pin Assignments (use TSI cable 1303522)

Contact

Number Function Comment

1 Ground (-)

2 + 5 VDC Supply voltage for all circuits

except solenoid valve

3 N95 Attach Sense Pull to ground to signal that

N95-Companion is attached

4 + 5 VDC Solenoid valve

voltage feed High current supply for

solenoid valve only

5 Solenoid valve control 0.0 VDC = sample from

sample tube

5.0 VDC = sample from

ambient tube

6 Not used

Data PortACCY Port

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