GMI PS1 Instruction Manual

CONFIGURATION & FIELD CALIBRATION
USER HANDBOOK

Issue 4
13/03/2013
Part Number: 63187
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Copyright © Gas Measurement Instruments Ltd 2013

COPYRIGHT
i
COPYRIGHT
This User Handbook is copyright of Gas Measurement Instruments Ltd (GMI) and the information contained
within, is for use only with the PS1.
Reproduction, in whole or in part, including utilisation in machines capable of reproduction or retrieval without
written permission of GMI is prohibited. Reverse engineering is not permitted.
LIABILITY
Every care has been taken in the preparation of this document, but GMI do not accept any responsibility for errors
or omissions and their consequences. Information in this document is subject to change without notice. This
document does not constitute a specication or basis for a contract. Your statutory rights under law are not affected.
MODIFICATION NOTICES
GMI aim to notify customers of relevant changes in the product operation and maintain this manual up to date.
In view of the policy of continuous product improvement there may be operational differences between the latest
product and this manual.

CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK
ii
This Handbook is an important part of the PS1 product. Please note the following points:
• Amendments should be attached.
• Although every care is taken in the preparation of this Handbook it does not constitute a specication for
the instrument.
SOFTWARE
Software supplied for use in a particular product, may only be used in that product and may not be copied without
the written permission of GMI. Reproduction or disassembly of such embodied programmes or algorithms is
prohibited. Ownership of such software is not transferable and GMI does not warrant that the operation of the
software will be error free or that the software will meet the customer’s requirements.
DISPOSAL ADVICE
When no longer in use, dispose of the instrument carefully and with respect for the environment.
GMI will dispose of the instrument without charge if returned to the factory.

iii
REVISION RECORD
Date Issue Description of Change
12/11/2007 1 New Handbook
18/03/2010 2 ‘SWITCH OFF’ sequence amended ; Non-Latching
alarms now default ; Alarms table revised to include
new part numbers ; Oxygen eld calibration kit added.
05/01/2011 3 Revised to include the effect of CN 5047.
13/03/2013 4 Product change from T.ex to PS1 ; the addition of
Sulphur Dioxide (SO2) ; removal of Chapter 6.

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CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK

v
CONTENTS
COPYRIGHT.................................................................................................................................................i
LIABILITY......................................................................................................................................................i
MODIFICATION NOTICES ...........................................................................................................................i
SOFTWARE .................................................................................................................................................ii
DISPOSAL ADVICE .....................................................................................................................................ii
REVISION RECORD.................................................................................................................... iii
1. INTRODUCTION ................................................................................................................. 1-1
2. SWITCH INSTRUMENT ON / OFF ...................................................................................... 2-1
2.1 SWITCH THE INSTRUMENT ON / ENTER MENU MODE .............................................................. 2-1

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CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK
2.2 EXIT MENU MODE / SWITCH THE INSTRUMENT OFF................................................................. 2-8
3. FIELD CALIBRATION........................................................................................................... 3-1
3.1 INSTRUMENT WITH TOXIC SENSOR ............................................................................................ 3-2
3.1.1 Zero Sensor....................................................................................................................................................... 3-2
3.1.2 Calibration Requirements.................................................................................................................................. 3-3
3.1.3 Calibrate Instrument .......................................................................................................................................... 3-3
3.2 INSTRUMENT WITH OXYGEN SENSOR........................................................................................ 3-5
3.2.1 Calibrate Instrument .......................................................................................................................................... 3-5
3.3 FAILED ZERO / CALIBRATION ........................................................................................................ 3-6
4. ALARM CONFIGURATION .................................................................................................. 4-1
5. CONFIGURATION SETUP................................................................................................... 5-1
INDEX.............................................................................................................................................i

1-1
1. INTRODUCTION
This handbook details FIELD CALIBRATION (Chapter 3),
ALARM CONFIGURATION (Chapter 4) and CONFIGURATION
SETUP (Chapter 5) of the GMI PS1 instrument.
The instrument must rst be switched ON in ‘Menu Mode’
and a three digit code entered, as detailed in Chapter 2,
before calibration, alarms or conguration setup modes can
be accessed.
The procedures detailed in chapters 3, 4 and 5 illustrate the
GMI factory default settings. These settings can be edited by
following the procedures detailed in the relevant chapters.
Fig. 1-1 PS1 Instrument

1-2
CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK

2-1
2. SWITCH INSTRUMENT ON / OFF
2.1 SWITCH THE INSTRUMENT ON / ENTER MENU MODE
• Press and hold the RH button for one
second to switch the instrument on.
The instrument begins its warm-up routine. First, all
segments are briey shown, and the LED’s will ash, the
buzzer beeps, and the vibrator will vibrate.
An example of an initial screen display is shown in Fig.
2-1 opposite.
During the warm-up cycle, a countdown timer is displayed
at the bottom / centre of the Screen. Fig. 2-1 Initial Screen Display

2-2
CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK
Immediately following the initial screen display, and during the following warm-up displays, enter the
menu mode by pressing the LH and RH buttons in the following sequence:
• Press the LH button
• Press the RH button
• Press the LH button
• Press the RH button
The following warm-up screens continue while entering the
menu mode sequence above:
The software version is displayed, as shown in example Fig.
2-2 opposite.
The next screen displays the target gas.
The target gas in the example shown, Fig. 2-3, is Hydrogen
Sulphide.
Fig. 2-2 Software Version
Fig. 2-3 Target Gas

2-3
SWITCH INSTRUMENT ON / OFF
Next, the different alarm level
values are shown. See Figures
opposite:
Note: If any particular
alarm is disabled, the
screen will show ‘dis.’
(disabled).
Fig. 2-4 Hi Alarm Level Fig. 2-5 HiHi Alarm Level
Fig. 2-7 LTEL Alarm LevelFig. 2-6 STEL Alarm Level

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CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK
The nal warm-up screen displays the instrument serial number,
as shown in Fig. 2-8, with the last four digits in large font size.
In the example shown opposite, the serial number is 120136:
On completion of warm-up, and providing the menu mode
button sequence was entered correctly, the screen shown in
Fig. 2-9 is displayed.
Three zero digits are displayed on the instrument screen with
the rst digit ashing. This prompts the user to enter the rst
digit of the access code.
Note: The default access code is 316.
Fig. 2-8 Instrument Serial Number
Fig. 2-9 Enter Access Code

2-5
SWITCH INSTRUMENT ON / OFF
• Press the LH button repeatedly until the required
value (3, default) is displayed as rst digit.
• Press the RH button to step to the next (second)
ashing digit.
• Press the LH button repeatedly until the required
value (1, default) is displayed as second digit.
• Press the RH button to step to the next (third)
ashing digit.
• Press the LH button repeatedly until the required
value (6, default) is displayed as third digit, thus
completing the access code, as shown in Fig. 2-10.
• Finally, press the RH button to accept the access
code.
Fig. 2-10 Enter Access Code
Note:
If no button is pressed for a
period of 10 seconds, the
instrument display will revert to
normal operation mode.

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CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK
Once the correct code has been accepted, the instrument screen will show ‘CAL’ (Calibration Mode).
See Fig. 2-11.
• Press the LH button repeatedly to select:
‘ALAR’ (Alarm Mode) shown in Fig. 2-12,
‘SEt’ (Setup Mode) shown in Fig. 2-13,
and returning to ‘CAL’ (Calibration Mode).
Fig. 2-11 Calibration Mode Fig. 2-12 Alarm Mode Fig. 2-13 Setup Mode

2-7
SWITCH INSTRUMENT ON / OFF
When required mode is displayed,
• Press the RH button to enter selected mode.
Refer to relevant chapter for details, as follows:
Chapter 3: Field Calibration
Chapter 4: Alarm Conguration
Chapter 5: Conguration Setup
Note: When accessing any of the three modes listed
above, ‘tE’ (Test) symbol is displayed in the lower
centre portion of the screen, as shown in example
Fig. 2-14.
Fig. 2-14 Test Symbol

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CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK
2.2 EXIT MENU MODE / SWITCH THE INSTRUMENT OFF
To exit Calibration / Alarm / Setup mode and return to normal
operating display,
• Press and hold the RH button .
To switch the instrument OFF,
• Press and hold both the LH and RH buttons
simultaneously.
The instrument screen will now start a countdown from three (3) to
OFF as shown in Fig. 2-15 opposite. The buttons must be pressed
until the display shows OFF, then release the buttons.
Fig. 2-15 OFF Sequence

3-1
3. FIELD CALIBRATION
Field Calibration allows calibration of the PS1 instrument to be carried out without the use of additional
equipment such as PC’s or tools.
Note: Alternatively, the PS1 Auto Bump / Calibration Station can be used (GMI Part No. 63450). Refer
to PS1 Auto Bump / Calibration Station User Handbook (GMI Part No. 63461).
To calibrate the PS1 instrument, you must rst switch the instrument ON in ‘Menu Mode’. Once a three
digit security code is entered, ‘CAL’ mode can be selected as detailed in Chapter 2.
- For instruments with a toxic sensor, refer to section 3.1.
- For instruments with an oxygen sensor, refer to section 3.2.

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CONFIGURATION & FIELD CALIBRATION - USER HANDBOOK
The instrument sensor must be zeroed
before accurate calibration can commence.
Make sure that the instrument is zeroed in
fresh air.
3.1.1 Zero Sensor
On entering ‘CAL’ mode, as detailed in
Chapter 2, the detected value alternates
with four dashes (- - - -) as shown in (ppm)
example Fig. 3-1.
To zero the sensor, in fresh air,
• Press and hold the RH button
for one second.
A zero reading is then displayed, as shown
in example Fig. 3-2.
3.1 INSTRUMENT WITH TOXIC SENSOR
Fig. 3-1 Alternating Screen Display
Fig. 3-2 Instrument Sensor Zeroed