Macnaught PR User manual

MXL-INSTPR
REV 3
11/19
TYPE PR
DIGITAL REGISTER
INSTRUCTION MANUAL
Please read and retain this instruction manual to assist
you in the operation of this product.
This Instruction Manual provides instruction guide on the
operation and programming of the Type PR, 12mm LCD
Digital Register.
Should you require further assistance please contact you
local Macnaught representative.
Macnaught offer a comprehensive set of web based
support materials to compliment our product range.
Access the website by scanning the QR code.
WWW.MACNAUGHT.COM
To the Owner
- FLOWRATE INDICATOR
- TOTALIZER

2
INDEX
Introduction……………………………………………………………………………………………………………….……….. 3
Functions and Features…………..……………..……………..……………..……………..……………..……………..…… 3
Configuration…………..……………..……………..……………..……………..……………..……………..……………..… 3
Display and mounting information………….……………..……………..…………..……………..…………….………….. 3
Installation………………………………..……………………………………..……………..……………..……………..…... 3
Warranty……………………………………..……………..……………..……………..……………..……………..………... 3
Technical Specifications…………….…………….……………………………………………………………………………. 4
General…………….…………….…………….…………………..…………..……………..……………..……………..…… 4
Display…………….…………….…………….…………….……..…………..……………..……………..……………..…… 4
Input…………….…………….…………….……………………..……………..……………..……………..……………..….. 4
Output…………….…………….…………….……………………..……………..……………..……………..………………. 4
Set-up functions…………….…………….…………….………………….…………….…………….…………….……….….. 5
Terminal connectors…………….…………….…………………….…………….…………….…………….……...………… 5
Explanation of Set-up functions…………….…………………………….…………….…………….…………….………… 6
Total/ Batch Total….…………….…………….………………….…………..……………..……………..……………..…… 6
Accumulated Total…………….…………….…………….……..…………..……………..……………..……………..……. 6
Flow Rate…….…………….…………….……………………..……………..……………..……………..……………..……. 6
Meter…………….…………….…………….……………………..……………..……………..……………..……………..… 6
Programming Set-up level…………….…………….……………………….…………….…………….…………….………. 7
Modes of operation…………….…………….………………………………..……………..……………..……………..…... 7
Function of buttons…………….…………….………………………………..……………..……………..……………..…... 7
Entering and Exiting Setup mode…….………………………………..……………..……………..……………..…………. 7
K-factor programming…………….…………….…………….………………….…………….…………….…………………. 8
How to find a k-factor of your meter…………..……………..……………..……………..……………..……………..……. 8
Entering K-factor in the display…………..……………..……………..……………..……………..……………..…………. 8
Gallons to Litre conversion…………….…………….…………..…………..……………..……………..……………..…… 8
Dimensions…………….…………………………………….…………….…………….……………….…………….…………. 9
Exploded view……………...…………………….…………….…………….…………….………………………….…………. 9
Ordering code…………….…………….………………….…………….…………….…………….…………….…………….. 9
Service kits…………….…………….………………….…………….…………….…………….…………….…………….….. 9
Troubleshooting…………….…………….…………….………….………….…………….…………….…………….…….... 10
Notes……………..…………….…………….…………….………….………….…………….…………….…………….…….... 11
Replacing the battery…….…………….…………….…………..…………..……………..……………..……………..…… 10

3
CONFIGURATION OF THE UNIT
The PR has been designed to be implemented in many types of applications. For that reason, a SETUP-level is
available to configure your PR according to your specific requirements.
It includes several important features, such as K-factors, measurement units etc. All setting are stored in EEPROM
memory and will not be lost in the event of power failure.
DISPLAY INFORMATION
The unit has a large transflective LCD with various kinds of symbols and digits to display measuring units, status
information and key-word messages.
Flowrate and total are displayed on 12mm digits.
A backup of the total and accumulated total in EEPROM memory is made every minute.
FUNCTIONS AND FEATURES
The flow rate / totalizer model PR is a microprocessor driven instrument designed to display flow rate, total and
accumulated total.
This product has been designed with a focus on:
• Ultra-low power consumption to allow long-life battery powered applications.
• The glass reinforced polypropylene housing offers IP67 environmental protection.
INTRODUCTION
MOUNTING EXAMPLES
INSTALLATION
The display has a unique M-lock mounting feature. It can be installed on
• MX meter body
• MX wall mount bracket
To install, secure the display on the cam and rotate quarter turn clock-wise (90 degrees)
To uninstall, hold the display and rotate quarter turn anti clock-wise (90 degrees)
DISPLAY EXAMPLES
There are no tools required to install/ remove the display
WARRANTY
For warranty terms & conditions, visit https://au.macnaught.com/warranty
Flow rate example Total example
Display features Decimals and various units of measurement
Mounting on MX meter body Mounting on wall mount bracket

4
TECHNICAL SPECIFICATIONS
GENERAL
Display
Type High intensity reflective numeric and alphanumeric LCD, UV-resistant
Digits Seven 12mm (0.47") and seven 8mm (0.31"). Various symbols and measuring units
Flow Rate: Once per second
Total: 8 times/second after key press to one second
Enclosure
General Polypropylene housing with Polycarbonate window, EPDM gaskets. UV stabilized
Control keys Two industrial micro-switch keys. UV-resistant keypad.
IP Classification IP67
Cable entry (2) x M12 * 1.5
Backlight No
Ex approvals No
Temperature
Operational -20°C to +80°C (-4°F to +176°F).
Power supply
Battery powered Lithium battery - life-time depends upon settings - up to 3 years @ 20°C
Battery specs 3.6 VDC, ‘A’ size, type: ER17505 (Ordering code: DR012S)
Terminal connections
Type Terminal strip. Wire max. 1mm
2
Data protection
Type Backup of all settings and running totals in flash memory
Environment
Electromagnetic
compatibility Compliant ref: EN 61326-1:2006, EN61010-1:2001
DISPLAY
Flow rate / Total / Batch total / Accumulated total (Note: Total and Batch total can be reset to zero)
Digits 7 digits
Units L - m
3
- UKGAL - USGAL - UKbbl –USbbl - OILbbl
Decimals 0 - 1 - 2 or 3.
Flow Rate
Time units /sec - /min - /hr
Operator functions
Displayed functions
Flow Rate.
Total (can be reset to zero by the operator).
Batch total (can be reset to zero by the operator)
Accumulated total (non resettable)
INPUT & OUTPUT
Input
Input Reed switch (from flow meter)
Frequency Total: minimum 0 Hz - maximum 120 Hz for total
Flow Rate: 0.01 Hz – maximum 120 Hz
K-Factor 0000.001 - 9,999.999 pulses per Litre
Output
Output Nil
Refresh rate

5
IMPORTANT
The settings for Total, Accumulated Total and Flow rate are entirely separate. In this way, different units of
measurement and decimals can be used for each e.g. gallons for total and liters for flow rate.
The K-Factor in 4.1 must be entered in pulses per litre (PPL). Entering the k-factor in pulses per gallon (PPG) will result
in inaccurate readings. Refer to page 8 for detailed instruction on entering the k-factor.
*The k-factor in 4.1 MUST ALWAYS be entered in pulses per LITRE, regardless of units in 1.1, 2.1 and 3.1
The PR unit can only accept a Reed switch input, this sensor has been selected as the most common sensor and
requires very little power with small effect on battery life.
The 2 position terminal block is not polarity conscious so the reed switch wires can be connected in any order.
TERMINAL CONNECTORS
1 Total/ Batch Total Default value
1.1 Unit L - m
3
- UKGAL - USGAL - UKbbl –USbbl - OILbbl L
1.2 Decimals 0 - 1 - 2 - 3 0
2 Accumulated Total
2.1 Unit L - m
3
- UKGAL - USGAL - UKbbl –USbbl - OILbbl L
2.2 Decimals 0 - 1 - 2 - 3 0
3 Flow Rate
3.1 Unit L - m
3
- UKGAL - USGAL - UKbbl –USbbl - OILbbl L
3.2 Time Period Second - Minute - Hour Minutes
3.3 Decimals 0 - 1 - 2 - 3 0
3.4 Calculation per 1 - 255 pulses 10
3.5 Cut-off 0.1 - 999.9 seconds 30
4 Meter
4.1 *K-Factor
(Pulses per Litre) 0000.000 to 9999.999 ’1’ or as per factory settings
5 Others
5.1 Type dr dr
5.2 Software Version 03.xx.xx 03.xx.xx
5.3 Serial No. xxxxxxx xxxxxxx
SET-UP FUNCTIONS
Connecting any other type of sensor could cause damage to the unit
For meter mounted displays, these terminals come connected from
factory. No further connections are required by end-user.
For remote displays, Reed switch (from flow meter) to be connected
by the end-user.

6
EXPLANATION OF SET-UP FUNCTIONS
IMPORTANT
The settings for Total, Accumulated Total and Flow rate are entirely separate. In this way, different units of
measurement and decimals can be used for each e.g. gallons for total and liters for flow rate.
1 Total/ Batch Total
1.1 Unit This determines the measurement unit for Total and Batch total.
The following units can be selected:
L - m
3
- UKGAL - USGAL - UKbbl –USbbl - OILbbl
1.2 Decimals This determines the number of digits and decimal points for total and batch total.
The following decimals can be selected (for 0, 1, 2 and 3 respectively)
0000000 - 111111.1 - 22222.22 - 3333.333
2 Accumulated Total
2.1 Unit This determines the measurement unit for Accumulated Total.
The following units can be selected:
L - m
3
- UKGAL - USGAL - UKbbl –USbbl - OILbbl
2.2 Decimals This determines the number of digits and decimal points for accumulated total.
The following decimals can be selected (for 0, 1, 2 and 3 respectively)
0000000 - 111111.1 - 22222.22 - 3333.333
3 Flow Rate
3.1 Unit This determines the measurement unit for flow rate.
The following units can be selected:
L - m
3
- UKGAL - USGAL - UKbbl –USbbl - OILbbl
3.2 Time Period This determines the time unit for flow rate
The following units can be selected:
/SEC (Second) - /MIN (Minute) - / HR (Hour)
3.3 Decimals This determines the number of digits and decimal points for flow rate.
The following decimals can be selected (for 0, 1, 2 and 3 respectively)
0000000 - 111111.1 - 22222.22 - 3333.333
3.4 Calculation The flow rate is calculated by measuring the time between a number of pulses, for
example 10 pulses. The more pulses the more accurate the flow rate will be. The
maximum value is 255 pulses.
Note: the lower the number of pulses, the higher the power consumption of the unit will be
(important for battery powered applications).
Note: for low frequency applications (below 10Hz): do not program more than 10 pulses else the
update time will be very slow.
Note: for high frequency application (above 1kHz) do program a value of 100 or more pulses.
3.5 Cut-off With this setting, you determine a minimum flow requirement thresh-hold, if during this
time less than XXX-pulses (setup 3.4) are generated, the flow rate will be displayed as
zero.
The cut-off time has to be entered in seconds - maximum time is 999 seconds (about 15
minutes).
4 Meter
4.1 *K-Factor
(Pulses per Litre) With the K-factor, the flow meter pulse signals are converted to a flow rate. The more
accurate the K-factor, the more accurate the functioning of the system will be.
The setting allows a K Factor with up to 3 decimal places and 4 whole numbers e.g.
1234.123
*Please note that the K-Factor entered in 4.1 must be in pulses per litre (PPL). Entering the
k-factor in pulses per gallon (PPG) will result in inaccurate readings. Refer to page 8 for
detailed instruction on programming the k-factor.

7
Setup mode is reached by pressing the ‘P’ button for 7 seconds; at which time, setup will be displayed on the LC
display. In order to return to the Run mode, ‘P’ will have to be pressed for 3 seconds. Alternatively, if no keys are
pressed for 2 minutes, the unit will exit setup mode automatically.
Setup can be reached at all times while the display remains fully operational.
PROGRAMMING SET-UP LEVEL
ENTERING INTO SETUP MODE EXITING FROM SETUP MODE
This chapter describes the daily use and programming of the PR Digital Register. The instructions are meant for users /
operators.
MODES OF OPERATION
RUN mode: This is the normal operating mode. icon on the screen represents this mode.
SETUP mode: This mode is to view settings. icon on the screen represents this mode.
SETUP PROG mode: This mode is to modify settings. icon on the screen represents this mode.
FUNCTION OF THE BUTTONS
Below are the functions of ‘P’ and ‘S’ buttons during different modes of operation.
Once programming is done, visit the parameters again to make sure the changes are saved correctly.
Mode
(Press and release simultaneously)
RUN
Toggle screens;
Flowrate, Total, Batch and
Accumulated total
Access to Setup mode
Toggle screens;
Flowrate, Total, Batch and
Accumulated total
Resets Total and Batch total
(Press P for NO or S for YES when
prompted)
SETUP Toggle sub-functions
Access to Run mode Toggle main-functions Access to Setup-Prog mode
(while in a sub-function)
SETUP PROG Apply a new value to a sub-
function
Apply a new value to a sub-
function Save changes

8
K-FACTOR PROGRAMMING
Press for 7 seconds.
This will enter into Setup model
Press three times until it shows function 4 ‘METER’
Press
This will show sub-function 4.1 ‘FACt (i.e. K-factor)’
Press and release and simultaneously
This will enter in programming mode. The screen show and the
left most digit start flashing
Press to change the numeric value and press to move to the next digit.
Once the k-factor is entered, press and release and simultaneously. This will save the changes.
Press for 3 seconds to go to the Run mode
PPG to PPL Conversion
If the flow meter’s body or test report shows the k-factor in pulses per gallon (PPG), it needs to be converted into
pulses per LITRE (PPL) first.
Divide the PPG k-factor by 3.7854 to convert into PPL.
As an example: If the PPG k-factor is 136.70, the PPL k-factor is 36.112
The display accepts k-factor in pulses per LITRE only
Once the programming is done, visit the parameters again to make sure the changes are saved correctly
HOW TO FIND A K-FACTOR OF YOUR METER
The K-factor could be found on either of;
• Flow meter’s body
• Flow meter’s test report
• Contact Macnaught providing the Serial Number of the flow meter
PROGRAMMING K-FACTOR IN THE DISPLAY
Always enter the K-factor in pulses per LITRE (PPL). Entering the k-factor in pulses per gallon (PPG) will result in
inaccurate readings.
Follow below steps to enter the k-factor if you are in RUN mode

9
DIMENSIONS
2. Cover Screws
4. LCD Cover
5. O-Ring
6. LC Display
7. Battery
8. PCB Sensor Board
9. Polypropylene
Housing
ORDERING CODE
1. Rubber Boot
EXPLODED VIEW
Part Number Item Description
MXD-DS Display
MXS-WMB Wall mount bracket
PR-RMP Display + Wall mount bracket
SERVICE KITS
Kit Part Number Item Description Item Number
DR012S Battery 7
MXS-PCB-RH PCB Sensor Board 8
MXS-PCB-PR PCB Sensor Board 8
PP Housing 9
MS1279S Display Label 3
MS685S Cable gland - M12 10
Cover Screws 2
Display Label 3
LCD Cover 4
O-Ring 5
LC Display 6
Battery 7
MXS-DIS-PR
Wall mount bracket is required for remote installation
PCB Sensor Board has 1 x Reed switch and 1 x Hall effect
sensor as standard (unless a special board is requested)
10. Cable Gland
3. Display Label

10
DISPLAY IS BLANK
The battery could either be dead or not connected properly. Inspect/ replace the battery.
DISPLAY SHOWS INCORRECT READING
Check the k-factor. Make sure the decimals are taken care of. It should be in pulses per litre.
DISPLAY SHOWS NO FLOW
Check the wiring between the PCB sensor board (Item no 8) and LC display board (Item no 6). Check for loose
connections and clean the termials if required. Replace the PCB sensor board if wiring and programming are ok.
bAt LOW ALARM
This is Low Battery alarm. Replace the battery
RPL bAt
ALARM
This is the final warning of low battery. The unit will shutdown any time. Replace battery
REPLACING THE BATTERY
The battery is located on the rear side of LC display (item no 6). This can be accessed by removing the rubber boot
(item no 1) and screws (item no 2). After replacing the battery (Part no: DR012S), make sure the o-ring (item no 5)
stays intact with the LCD cover. Apply a thin layer of grease to the o-ring if required.
Re-install the cover, screws and boot. See illustration below;
TROUBLESHOOTING
The unit is not intended to be supplied power from an external DC source. Connecting an external source
may casue damage or incorrect functioning of the unit.
1. Remove Rubber Boot
2. Remove 4 screws
3. Install the battery
with orientation as
shown
4. Re-install the cover,
screws and boot
Backup of settings and running totals are stored in flash memory. The display will retain these values in an
event if battery is removed for replacement.

11
1
Default
settings
Date:__/__/____
Enter your
settings here
Date:__/__/____
Enter your
settings here
1.1 Unit L - m
3
- UKGAL - USGAL -
UKbbl –USbbl - OILbbl L
1.2 Decimals 0 - 1 - 2 - 3 0
2 Accumulated Total
2.1 Unit L - m
3
- UKGAL - USGAL -
UKbbl –USbbl - OILbbl L
2.2 Decimals 0 - 1 - 2 - 3 0
3 Flow Rate
3.1 Unit L - m
3
- UKGAL - USGAL -
UKbbl –USbbl - OILbbl L
3.2 Time Period Second - Minute - Hour Minutes
3.3 Decimals 0 - 1 - 2 - 3 0
3.4 calculation per 1 - 255 pulses 10
3.5 Cut-off 0.1 - 999.9 seconds 30
4 METER
4.1 *K-Factor
(Pulses per Litre) 0000.000 to 9999.999
’1’ or as per
factory
settings
5 OTHERS
5.1 Type dr dr
5.2 Software Version 03.xx.xx 03.xx.xx
5.3 Serial No. xxxxxxx xxxxxxx
Total/ Batch Total
For your record, it is advisable to note down any changes in the parameters
PO/ Reference no:
Flow Meter model:
Flow meter Serial:
NOTES
WEEE Directive - Waste Electrical and Electronic Equipment
The WEEE Directive requires the recycling of waste electrical and electronic equipment in
the European Union.
Whilst the WEEE Directive does not apply to some of Macnaught’s products, we support its
policy and ask you to be aware of how to dispose of this product.
The crossed out wheelie bin symbol illustrated and found on our products signifies that this
product should not be disposed of in general waste or landfill.
Please contact your local dealer national distributor or Macnaught Technical Services for
information on product disposal.

12
Macnaught Americas
614 South Ware Boulevard
Tampa Florida USA, 33619
T: [phone]
E: [email protected]
W: www.macnaughtusa.com