Pentair HAFFMANS RPU-352, HAFFMANS RPU-353 Instruction Manual
HAFFMANS
HAFFMANS
INSTRUCTION MANUAL
REDPOST PU MONITOR
TYPE RPU-352/353
W W W.HA FF MA NS.NL
W W W.HA FF MA NS.NL
Essential reading!
Haffmans BV is not responsible for any damage caused by the owner’s failure to follow the instructions given in this
manual. Haffmans BV is not responsible for print or translation errors in this edition of the manual. The specifications
and design of this product are subject of change without notice. All rights reserved. No part of this publication may be
reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior
written permission of Haffmans BV.
Art. no. : 107.035
Release date : 15-07-2010
Version : D
2
Table of contents
1
Technical specifications 9
2
Safety 11
2.1
Symbols 11
2.2
Precautions and safety instructions 11
3
Installation 13
3.1
Unpacking 13
4
Operation 15
4.1
Controls 15
4.2
I/O switch 15
4.3
Indicator 15
4.4
Display illumination 16
4.5
Switch functions and icons 16
4.6
Auto power on 16
4.7
Auto power off 16
4.8
Low battery condition 17
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Starting 19
5.1
Preparing the instrument 19
5.2
Pressure zero setting Only for PRU-353 21
5.3
Thermometer 21
5.4
Starting the recording 21
6
Recording 23
6.1
Stopping the recording 23
6.2
Screen temperature 23
7
Results 25
7.1
Results displays 25
7.2
Main menu 25
7.3
Calculated results 25
7.4
Erasing a file 26
8
Calculated Results 27
8.1
Total PU achieved 27
8.2
Unique ID number 27
8.3
Total recording time 27
8.4
Maximum temperature 27
8.5
Time near maximum temperature 27
8.6
Temperature at pasteuriser exit 28
8.7
PU cut-off temperature 28
8.8
Time adding PU’s 28
8.9
Maximum pressure Only for PRU-353 28
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9
10
11
12
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8.10 Time near maximum pressure Only for PRU-353 28
8.11 Reason for stopping 28
Graph 29
9.1
Cursor movement 29
9.2
Graph lines 30
9.3
Off-scale records 30
Full List 31
10.1 Time line movement 31
Battery Charging 33
11.1 Battery information 33
11.2 Battery temperature 33
Menus 35
12.1 Moving the highlight 35
12.2 Selecting an item 35
13
14
Key Plug (Configuration) 37
13.1 Output to other equipment 37
13.2 Language 37
13.3 Display contrast 37
13.4 Clock 38
13.5 Display units 38
13.6 Active channels 39
13.7 PU cut-off temperature 39
13.8 PU calculation – Base 39
13.9 PU calculation – Z 39
13.10 PU calculation – Fahrenheit 39
13.11 Recording interval 40
13.12 Equipment number 40
13.13 Mains frequency 40
13.14 Leaving configuration 40
Output 41
14.1 Stand alone operation 41
14.2 Connection to RPC-80 41
14.3 Connection to PC 41
15
Maintenance 43
16
Frequently Asked Questions 45
16.1 Battery and battery charging 45
16.2 Controls 47
16.3 Results 48
Instruction manual RPC-80 Printer/charger 51
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17
18
19
20
21
22
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Technical specifications 53
Introduction 55
Unpacking 57
Control panel 59
Use 61
21.1 Switching on 61
21.2 Connecting the monitor 61
21.3 Printing recorded files 62
21.4 After printing 62
21.4.1 200 Series P.U. monitors. 62
21.4.2 100 Series P.U. Monitors. 62
Configuration settings 63
22.1 Clock setting 63
22.2 Report printing 63
22.3 Template setting 63
23
24
Configuration MENU section 65
23.1 General format set-up 65
23.1.1 Select language 65
23.1.2 Select decimal point 65
23.1.3 Set graph formats 65
23.1.4 P.U.-user 65
23.2 P.U. calculation Set-up 66
23.3 Template set-up 67
23.3.1 Template recording 68
23.4 Template exchange 69
23.5 Editing a template name 70
23.6 Monitor set-up 70
23.7 RPC-80 Set-up 70
23.8 Full list set-up 71
23.9 Printer set-up 71
23.10 External link set-up 72
23.11 Finished set-up : exit 73
Printed results 75
24.1 Results 75
24.2 Status report 75
25
System errors 77
25.1 System error 02 & 04. 77
25.2 System error 08 & 09. 77
26
Faulty operation 79
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27
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26.1 B-messages 79
26.2 C-messages 79
26.3 M-messages 81
26.4 P-messages 82
26.5 T-messages 83
Back-up battery 85
Instruction manual RPC-50, charger interface 87
28
Technical specifications 89
29
Unpacking 91
30
Operating 93
30.1 Battery Charging 93
30.2 Connection to PC 93
31
Safety 95
Appendix I Background information 97
Appendix II Diagrams 99
Appendix III Customer service 101
Appendix IV Terms of guarantee 103
Appendix V EC Declaration of conformity RPU 352 / 353 105
Appendix VI EC Declaration of conformity RPC 50 107
Appendix VII EC Declaration of conformity RPC 80 109
Appendix VIII Spare parts 111
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1 TECHNICAL SPECIFICATIONS
Storing data
Max No. of fields
Recording timer setting
Recording interval setting
Only for RPU-352:
Only for PRU-353:
Recording
inputs
Number of input channels 2 1
Nominal range
Resolution 0.02 ºC 0.002 bar
* The display can show results in alternative units if required.
Measuring
accuracy
Temperature
Only for PRU-353:
Operating
conditions
Only for PRU-353:
Max No. of files 4 * (a file is a single recording run)
15860 (a field is one channel
record)
4 hours * (the maximum recording
run)
10 seconds (user can select from 2
s to 60 s)
* Other values available to special order. Recording both channels at 10 second intervals a total of 22
hours recording can be stored.
* Other values available to special order. Recording all 3 channels at 10 second intervals a total of 14.6
hours recording can be stored.
Temperature
Only for PRU-353:
Pressure
-5 to +105 ºC * -0.5 to +18.0 bar
gauge*
Worst case, all errors, including sensors
± 0.25 ºC (sensor in range 40 to 80
ºC)
± 0.4 ºC (over rest of range)
Pressure
(after setting zero)
± 0.08 bar (sensor in range 0 to 8
bar gauge and 40 to 80 ºC)
± 0.2 bar (all other conditions)
All sensors are interchangeable within the accuracy specification
Operation outside these limits may cause permanent damage
Instrument
Temperature sensor -30 to +150
-10 to +85 ºC
ºC
Pressure sensor
up to +20 bar gauge
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Battery life
Dimensions
Weight
Materials
Calculation of pasteurisation units (PU) can take place in the RPU-352, PRU-353
* Note that a temperature measurement error of ± 0.25 ºC represents ± 8% error in PU value.
From a fully charged battery
Example (a) 2 maximum runs Record 4 hours, display (with
backlight) 20 minutes
Example (b) 15 typical runs Record 40 minutes, display (with
backlight) 5 minutes
Assumes final recording is completed within one week of the first
(Length x Width x Height)
In frame
9.25 kg Including
380 x 175 x 230 mm
frame
Dimensions and weight are inclusive of carrying frame, can holder and can pressure fitting
Stainless steel, toughened glass and PET-P plastic.
Accuracy Better than ± 0.001% for calculation
alone *
Range 0 to 9999.9
PU
Resolution
0.1 PU
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2 SAFETY
2.1 SYMBOLS
Attention, warning and danger symbols used in this manual have the following significance.
Attention!
Warning
Information for correct or effective use of the equipment.
Incorrect or careless use can cause serious damage to the
equipment.
Failure to observe this information can result in major
personal injury or loss of life.
2.2 PRECAUTIONS AND SAFETY INSTRUCTIONS
Always follow basic safety precautions when using this equipment to reduce risk of injury.
Before using the equipment, read and understand the operating instructions in this manual.
This equipment is intended to monitor the pasteurisation process in tunnel pasteurisers. It
should not be used for any other purpose.
The equipment should only be connected to other equipment intended for the purpose and
manufactured by Redpost Electronic Products Ltd. Suitable battery chargers are RPC-50 and
RPC-80. Battery chargers from other manufacturers should not be used, they may result in
danger.
The equipment may remain hot for some time after being taken from the pasteuriser. Wear
protective gloves when carrying.
Always place the equipment on a level, stable surface. Do not place on shelves above eye
level.
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3 INSTALLATION
3.1 UNPACKING
This manual was written for the RPU-352 and PRU-353. You will find all the information in this
manual. When there is specific information for one product, it is written with the specific item.
Before despatch the RPU-352, PRU-353 was checked and tested by Haffmans B.V. Make sure
that the content of the delivery is complete and undamaged.
If the delivery is incomplete or damaged, please contact Haffmans B.V. or the
representative/agent designated by Haffmans B.V, immediately (appendix III). Always include the
serial number, order number or invoice number (given by Haffmans B.V.) of the RPU-352, PRU353 in the correspondence.
The delivery for the RPU-352 contains: The delivery for the PRU-353 contains:
1 PE-Monitor Type RPU-352 1 PE-Monitor Type PRU-353 for bottles and cans
1 Can/bottle holder PRU-353
1 Quick change facility 1 Quick change facility
1 Spray water temperature probe 1 Spray water temperature probe
1 Test plug 60°C 1 Test plug 60°C
1 Dummy temperature probe 1 Dummy temperature probe
1 Connector grease 1 Connector grease
1 Set of operating magnets (pkg 2) 1 Set of operating magnets (pkg 2)
1 Temperature probe, Lg 150 mm with set
of distance tubes (8 pieces)
1 Plate with bottle holder, Ø 55-68 mm 1 Plate with bottle holder, Ø 55-68 mm
1 K-plug 1 K-plug
1 Manual RPU-352 and PRU-353 1 Manual RPU-352 and PRU-353
Optional: Optional:
Temperature probe Temperature probe
1 Lg 110 mm* 1 Lg 110 mm*
1 Lg 190 mm* 1 Lg 190 mm*
1 Lg 230 mm* Plate with bottle holder
1 Lg 270 mm* 1 Ø 45-55 mm*
1 Lg 310 mm* 1 Ø 68-80 mm*
1 Lg 350 mm* 1 Ø 80-90 mm*
1 Lg 390 mm* 1 Ø 90-100 mm*
Plate with bottle holder 1 Play Back Unit, Type RPC-50
1 Ø 45-55 mm* 1 Play Back Unit, Type RPC-80
1 Ø 68-80 mm*
1 Ø 80-90 mm*
1 Ø 90-100 mm*
1 Play Back Unit, Type RPC-50
1 Play Back Unit, Type RPC-80
*Depending on the item(s) ordered.
1 Temperature probe, Lg 150 mm with set of
distance tubes (8 pieces)
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I/O
4 OPERATION
4.1 CONTROLS
Flashing
“ON” indicator
There are four control switches arranged around the display screen. Operate the
switches by touching one end of the actuator onto the glass in the marked area.
Keep the actuator in position until you see a change in the display or the flashing
indicator.
The two top switches are used for the main control functions. They take a few
seconds to operate so that there is less chance of any accidental actions.
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
Icon relates to
this switch
Display
DISPLAY
4.2 I/O SWITCH
The top left switch is the I/O (on/off) switch. Switch the instrument on by
activating this switch. Switch the instrument off by activating and holding this
switch for at least ten seconds. The display shows you what is happening.
Remove the actuator after the instrument switches off.
If there are any recorded files they will be saved during the time the instrument is
switched off.
You cannot switch the instrument off when the battery is charging from a Redpost
printer/charger unit or a Redpost battery charger.
4.3 INDICATOR
The small green lamp on the panel flashes once per second to show that the
instrument is operating. This lamp also flashes quickly five times to acknowledge
the action of either of the two top switches.
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4.4 DISPLAY ILLUMINATION
The I/O (on/off) switch also turns on the backlight that lights up the display.
When any switch is operated or there is any other activity, such as connecting a
probe, the backlight will turn on. It will turn off again after a short time to save
battery power. Activate the I/O switch (for about half a second) to turn on the
backlight without causing any other action.
If there is very little charge in the battery then the backlight will not turn on. This
saves unnecessary battery drain.
4.5 SWITCH FUNCTIONS AND ICONS
The I/O (on/off) switch always keeps the same function but for the other three
switches the display will show a small “icon” to indicate the function of each
switch. The icon is in the same corner as the switch it relates to. The switch icon
becomes inverted (black for white) when the switch is operated. If a switch has
no icon then it has no function at that time.
4.6 AUTO POWER ON
The instrument will automatically switch on when it is connected to a Redpost
printer/charger or a Redpost battery charger. This allows the battery charging to
be controlled and the charging information to be displayed.
The I/O (on/off) switch will not turn the instrument off while it is connected to a
charger but it can still be used to turn on the display backlight.
4.7 AUTO POWER OFF
The instrument uses several methods to reduce battery power consumption. The
automatic control of the display backlight is described above.
If the instrument is idle and waiting to record a file it will automatically switch off
after ten minutes. The instrument is idle if no switches are activated, no data
communication is taking place and it is not connected to an active battery
charger.
If the instrument is idle and displaying the results of a recorded file it will
automatically switch off after twenty minutes.
When the instrument switches off automatically any recorded files are saved.
To resume normal operation activate the I/O (on/off) switch or connect the
instrument to a Redpost battery charger.
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4.8 LOW BATTERY CONDITION
If recording is taking place when the battery charge level falls below 15%
then recording will stop and the file will be saved. This ensures that
recordings cannot be corrupted by low battery condition. The results
screen will show the reason for stopping.
If there is less than 15% charge in the battery then the backlight cannot be
switched on. This helps to ensure that the battery lasts for as long as
possible. The backlight increases the battery drain by about four times.
At an even lower level of charge (below 5%) the whole instrument will turn
off. Any recorded files will be saved. If you switch the instrument on again
in this state it will stay on for only a few seconds. Connect the instrument
to a Redpost battery charger as soon as possible.
The instrument continuously monitors its own battery use and battery
charging to gauge the amount of charge that remains in the battery. If the
battery voltage falls to a low level unexpectedly it may indicate that the
battery is not correctly holding its charge. This can happen after several
years of use. If this problem occurs the display will warn you that the
battery may need to be replaced. More information can be found in the
“Maintenance” section.
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
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5 STARTING
Temperature of
probe (channel 2)
Only for PRU-353:
Pressure
(channel 3)
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
Temperature of
probe (channel 1)
Start
recording
Set pressure
zero
5.1 PREPARING THE INSTRUMENT
Switch on the instrument. If there are any problems, such as insufficient charge in the battery,
the display will give the information you need. Before the temperature probes are connected
the location and numbering of the sockets is shown on the display.
Set up the bottle or can in the correct size holder and fit the correct length temperature probe.
Connect this probe into the channel 1 socket. Channel 1 is to the right of the display. When
calculating the results channel 1 is given most importance and is assumed to show the product
temperature.
Select the spray probe or second container temperature probe and connect it to channel 2.
Channel 2 is to the left of the display.
Both sockets must always be occupied. To run without one of the probes you can connect a
dummy temperature probe. (A special plug marked with a ‘T’.) You can also configure a
channel to be permanently inactive: see the section “Key Plug”. An inactive channel is shown
by an X on the screen.
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3
7
2
Only for RPU-353:
In order to make a record run the pressure sensor can be connected in the same bottle as the
temperature sensor.
Preparation for measurement in bottles and cans. For bottles an additional centre ring (1) is
needed to centre the bottle. Preparations are:
1. Adjust the Piercing mechanism (2) by placing a sufficient amount of distance tubes
Bottle length = 80 (base ring) + n x 40 (distance ring) + n x 5 (distance ring)
2. Tighten nut (3).
3. Place bottleor can on the base (4)
4. Lower the plate with pressure adapter and temperature sensor (5).
5. Close the piercing mechanism (2)
6. Optional snifting. By pushing the levers (2) up and down quickly, the pressure in the
bottle or can gets down to the atmospheric pressure
7. Push the temperature sensor (6) down into the bottle and adjust the sensor with the
screw (7). This process is described in the section “Appendix 1: Background Information”
6
5
2
4
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5.2 PRESSURE ZERO SETTING
Only for PRU-353
Before you connect the pressure fitting to the PRU-353 you should set the zero
point of the pressure channel (channel 3). This setting should be made before
each recording run and compensates for changes in atmospheric pressure. With
the pressure port open to the atmosphere activate the bottom right switch (0).
After the zero has been set you can connect the pressure fitting to the port and
then pierce the container to let the pressure reach the sensor. The pressure port
(channel 3) is on the back edge of the instrument to the left of the display.
5.3 THERMOMETER
When the instrument is ready to record, the temperature of the probes is shown
on the display, updated every second.* In this form the instrument can be used
as a highly accurate thermometer.
5.4 STARTING THE RECORDING
When you are ready to put the instrument into the pasteuriser, start recording by
activating the top right switch ().
*
The illustration shows the English language version in °C and bar. The text changes according to the language and
units selected for the display.
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6 RECORDING
Only for PRU-353:
The temperature of the probes, the pressure sensor reading and the elapsed
recording time are shown on the display throughout the recording run.*
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
Stop
recording
Animated
Elapsed
6.1 STOPPING THE RECORDING
When the instrument exits from the pasteuriser you can stop the recording by
activating the top right switch () or by unplugging either probe. Recording will
also stop after the maximum time (4 hours) or if the charge in the battery
becomes too low.
As soon as recording stops the results are displayed.
You can record again without erasing the previous file. Use the top right switch
to access the main menu and then select “Record Again”. (See “Results”
section.)
6.2 SCREEN TEMPERATURE
The display screen will switch off if the instrument is too hot (above 70°C). This
avoids damage to the screen. Recording will continue normally under these
conditions and the flashing green indicator lamp shows that the instrument is
operating. Normal display operation will resume as soon as the instrument has
cooled.
Warning
The instrument should never be operated at temperatures above
the maximum ambient temperature shown in the specifications
.
.
*
The illustration shows the English language version in °C and bar. The text changes according to the language and
units selected for the display.
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7 RESULTS
The calculated results are displayed as soon as recording stops. It is also
possible to select different representations of the results.
7.1 RESULTS DISPLAYS
There are three different results displays and they can be selected from the main
menu. The right hand switch above all the results screens gives access to this
menu. Later in this manual the “Menus” section explains the operation of the
menus in detail.
7.2 MAIN MENU
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
• The calculated Results such as the total PU achieved.
• The Graph of the file with a movable cursor that allows you to select one
record to be shown in detail.
• The Full list of all the records in the file in detail.
• Erase the recorded file(s). See more details below. You should print out
important files or copy them to a PC before you erase them.
• Record again without erasing the previous file(s). Up to four files can be
saved in the instrument at any one time. When the memory is too full to save
any more files, or when the battery is being charged, this item is not shown.
Files that have been printed using the RPC-80 printer/charger unit must be
erased before you can record any more files.
If more than one file has been recorded you will be asked to choose the file you
wish to show.
7.3 CALCULATED RESULTS
The results are set out on five “pages” with up to 3 items on each page. The right
hand switch below the screen () is used to move to the next page and then
from the final page back to the first ().
On the screen the channel number relating to each result is shown at the left
hand side of each line as a white figure on black. Channel 1 is given most
importance and is assumed to show the product temperature.
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• The total PU value achieved (channel 1)
• The unique ID number of the file
• The total recording time (and optional date & time †)
• The maximum temperature recorded (channel 1)
• The total time during which the temperature was within 2°C of the maximum
• The temperature at the exit from the pasteuriser (channel 1)
• The total PU value achieved (channel 2)
• The maximum temperature recorded (channel 2)
• The total time during which the temperature was within 2°C of the maximum
• The PU cut-off temperature (applies to both temperature channels)
• The total time accumulating PU’s: i.e. while temperature was at or above the
• The total time accumulating PU’s (channel 2)
• The maximum pressure recorded (channel 3)
• The total time during which the recorded pressure was within 0.2 bar of the
• The reason for stopping recording
All these results are calculated wherever possible. If the file contains any offscale records (outside the recording range of the instrument) then some results
may be invalid. A warning is shown if this is the case and some items may be
shown as “unknown”. Off-scale records can be caused by a faulty temperature
probe.
† If the instrument’s clock has been set then the date and time at the start of
the recording is shown alternating with the total recording time. See section
“Key Plug” for clock setting.
(channel 1) *
(channel 2) *
PU cut-off temperature (channel 1)
maximum (channel 3) *
7.4 ERASING A FILE
When files are no longer required you can remove them by selecting the Erase
option from the main menu. The “Menus” section explains the operation of the
menu in detail.
Move the menu highlight to Erase and hold the actuator on the top right (OK)
switch for ten seconds. The display shows you what is happening. All recorded
files are erased together. After the files have been erased you can release the
switch and the instrument will be ready to record again.
When you use the RPU-352, PRU-353with the RPC-80 printer/charger unit you
can erase the files, after they have been printed, by using the control panel of the
RPC-80. Files that have been printed using the RPC-80 must be erased before
you can record any more files.
*
The limits for this result vary according to the display units selected.
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8 CALCULATED RESULTS
Shows the data in the recorded file reduced to the most important details.
8.1 TOTAL PU ACHIEVED
The total number of Pasteurisation Units accumulated during the recording run.
This is calculated using your chosen definition of PU and cut-off temperature.
You can change the PU calculation by using the key plug. More details of the
calculation are given in the “Key Plug” section and in appendix I Background
information.
Your packaging specification will normally set the PU definition and a target PU
value for each product to ensure sufficient pasteurisation.
8.2 UNIQUE ID NUMBER
This file identity number is a combination of the instrument serial number and a
running number that advances for each recording. It is therefore unique to the
file.
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
8.3 TOTAL RECORDING TIME
The total elapsed time from the moment you start recording by activating the
switch until recording stops. Recording may be stopped in a variety of ways either
under your control or automatically. (The reason for stopping is given as the final
result.)
If the instrument’s internal clock has been set then the date and time the
recording started is also shown. These extra items show alternately with the total
recording time.
8.4 MAXIMUM TEMPERATURE
The maximum recorded temperature.
Your packaging specification may call for a certain maximum product
temperature and exceeding it could produce unacceptable flavour changes.
8.5 TIME NEAR MAXIMUM TEMPERATURE
The total time during which the temperature was within 2°C of the maximum.
This gives an approximate value for the time the product was within the
pasteuriser holding zone. The limit for this result changes to 4°F when
temperature is displayed in Fahrenheit.
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8.6 TEMPERATURE AT PASTEURISER EXIT
The moment that the instrument leaves the pasteuriser is judged by a rise in light
level from the relatively dark interior. Inspection lights inside the pasteuriser may
prevent this result from being calculated. The light sensor can be seen on the
front panel between the two left hand control switches, don’t cover this area with
tape or adhesive labels.
Your packaging specification may call for a maximum product exit temperature. If
the product leaves the pasteuriser at too high a temperature the flavour may be
impaired.
This result is shown for channel 1 only because that channel is assumed to show
the product temperature.
8.7 PU CUT-OFF TEMPERATURE
At or above this temperature PU’s are accumulated. Below this temperature they
are not. The cut-off temperature can be adjusted by using the key plug. More
details of the cut-off and the PU calculation are given in the “Key Plug” section.
Your packaging specification may call for a particular PU cut-off temperature to
ensure that pasteurising conditions are correct.
8.8 TIME ADDING PU’S
The total time during which the product temperature was high enough for PU’s to
be achieved and added to the total. The product temperature was at or above
the cut-off temperature for this length of time.
8.9 MAXIMUM PRESSURE
Only for PRU-353
The maximum recorded gauge pressure.
Attention!
Your container specification will show a maximum acceptable
internal pressure and exceeding it could lead to leakage or container
damage.
8.10 TIME NEAR MAXIMUM PRESSURE
The total time during which the gauge pressure was within 0.2 bar of the
maximum. The limit for this result changes to 4 psi or 0.2 kg/cm2 when pressure
is displayed in alternative units.
Only for PRU-353
8.11 REASON FOR STOPPING
You can stop recording by activating the switch or by unplugging either probe.
Recording will also stop after the maximum time (4 hours) or if the charge in the
battery becomes too low.
Page 28 of 112 RPU 352, RPU 353, RPC 80, RPC 50
2
menu screen
cursor
Channel 1
Channel 2
9 GRAPH
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
Indicates that
graph extends
PU cut-off temperature
to left
Move cursor
to left
Shows the data in the recorded file as a graph. The temperature (in the selected
display units) runs up the vertical axis and elapsed time (in minutes) runs along
the horizontal. *
This panel appears
Flashing
Full details of record under cursor
when cursor moves
Return to
Indicates that graph
extends to right
Move
cursor to
right
9.1 CURSOR MOVEMENT
The record under the cursor is shown in detail below the graph. The two switches
below the screen are used to move the cursor. Moving the cursor to the right
moves it towards the end of the file.
The cursor moves by one record as soon as you operate the switch. If you hold
the switch for a short time then the cursor starts to move continuously, slowly at
first and then faster, for as long as the switch is held. When the cursor reaches
the last record in the file the switch outline becomes dim and it no longer has any
effect.
Moving the cursor to the left (towards the start of the file) works in a similar way.
Whenever the cursor is moving, the elapsed time of the record under the cursor
is shown in a panel at the top right of the screen. The ID number of the file is
also shown here.
*
The illustration shows the graph in °C. The details change according to the units selected for the display.
RPU 352, RPU 353, RPC 80, RPC 50 Page 29 of 112
2
9.2 GRAPH LINES
Channel 1 shows as a solid line on the graph while channel 2 shows as a dotted
line. The position of the PU cut-off temperature is shown as a dashed line. The
horizontal lines above each channel in the detailed record show the style of the
line for that channel.
ONLY FOR PRU-353
The pressure channel (channel 3) is not shown as a line on the graph but if the
pressure channel is active then the gauge pressure is shown in the detailed
record area alternating with the temperature records.
An inactive channel is not shown on the graph and is shown with an X in the
detailed record.
The vertical temperature scale adjusts automatically so that the maximum
reading of the highest channel is always on the graph. A record that is below the
scale leaves a gap in the graph.
If the whole graph is wider than will fit on a single screen then the cursor causes
the graph to scroll from side to side so that the required portion is visible. Small
dashed lines at the left or right of the time axis indicate that the graph extends
further in that direction.
HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
:
9.3 OFF-SCALE RECORDS
Off-scale records are too high or too low to fit within the available recording range
of the instrument. The available recording range is shown in the “Specification”
section. Off-scale records can be caused by a faulty probe.
Any record that is too high or too low for the recording range does not show on
the graph and leaves a gap in the graph. In the detailed record area, records
above the top of the recording range show as a row of ‘+’ signs. Similarly a row
of ‘-’ signs indicates a record that is too low for the recording range.
Display backlight
You can use the top left switch at any time to turn on the display backlight.
Page 30 of 112 RPU 352, RPU 353, RPC 80, RPC 50
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