Fluidwell F127-P-EL-TA User manual

F127-P-EL-TA
DIFFERENTIAL FLOW COMPUTER
FOR CORRECTED LIQUID VOLUME
Signal input flowmeter: pulse, namur and coil.
Signal input temperature: (0)4-20mA.
Signal outputs: 4-20mA ref. corrected flowrate.
Options: Intrinsically Safe, Modbus communication.
F-Series - Field mounted indicators for safe and hazardous areas. More info: www.fluidwell.com/fseries

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SAFETY INSTRUCTIONS
Any responsibility is lapsed if the instructions and procedures as described in this
manual are not followed.
LIFE SUPPORT APPLICATIONS: The F127-P-EL is not designed for use in life support
appliances, devices, or systems where malfunction of the product can reasonably be
expected to result in a personal injury. Customers using or selling these products for use
in such applications do so at their own risk and agree to fully indemnify the manufacturer
and supplier for any damages resulting from such improper use or sale.
Electro static discharge does inflict irreparable damage to electronics! Before installing
or opening the unit, the installer has to discharge himself by touching a well-grounded
object.
This unit must be installed in accordance with the EMC guidelines (Electro Magnetic
Compatibility).
Do connect a proper grounding to the aluminum casing as indicated if the F127-P-EL has
been supplied with the 115-230V AC power-supply type PM. The green / yellow wire
between the back-casing and removable terminal-block may never be removed.
Intrinsically Safe applications: follow the instructions as mentioned in Chapter 5 and
consult “Fluidwell F1..-..-XI - Documentation for Intrinsic Safety”.
DISPOSAL
At the end of its life this product should be disposed of according to local regulations regarding
waste electronic equipment. If a battery is present in this product it should be disposed of
separately. The separate collection and recycling of your waste equipment will help to conserve
natural resources and ensure that it is recycled in a manner that protects the environment.
SAFETY RULES AND PRECAUTIONARY MEASURES
The manufacturer accepts no responsibility whatsoever if the following safety rules and
precautions instructions and the procedures as described in this manual are not followed.
Modifications of the F127-P-EL implemented without preceding written consent from the
manufacturer, will result in the immediate termination of product liability and warranty period.
Installation, use, maintenance and servicing of this equipment must be carried out by authorized
technicians.
Check the mains voltage and information on the manufacturer's plate before installing the unit.
Check all connections, settings and technical specifications of the various peripheral devices
with the F127-P-EL supplied.
Open the casing only if all leads are free of potential.
Never touch the electronic components (ESD sensitivity).
Never expose the system to heavier conditions than allowed according to the casing
classification (see manufacture's plate and chapter 4.2.).
If the operator detects errors or dangers, or disagrees with the safety precautions taken, then
inform the owner or principal responsible.
The local labor and safety laws and regulations must be adhered to.

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ABOUT THE OPERATION MANUAL
This operation manual is divided into two main sections:
The daily use of the unit is described in chapter 2 "Operation". These instructions are meant for
users.
The following chapters and appendices are exclusively meant for electricians/technicians. These
provide a detailed description of all software settings and hardware installation guidance.
This operation manual describes the standard unit as well as most of the options available. For
additional information, please contact your supplier.
A hazardous situation may occur if the F127-P-EL-TA is not used for the purpose it was
designed for or is used incorrectly. Please carefully note the information in this operating
manual indicated by the pictograms:
A "warning" indicates actions or procedures which, if not performed correctly, may lead to
personal injury, a safety hazard or damage of the F127-P-EL-TA or connected instruments.
A "caution" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the F127-P-EL-TA or connected instruments.
A "note" indicates actions or procedures which, if not performed correctly, may indirectly
affect operation or may lead to an instrument response which is not planned.
Hardware version : 02.01.xx
Software version : 02.05.xx
Manual : HF127PEN_EL_TA_v0501_04
© Copyright 2011 : Fluidwell bv - The Netherlands.
Information in this manual is subject to change without prior notice. The
manufacturer is not responsible for mistakes in this material or for incidental
damage caused as a direct or indirect result of the delivery, performance or
use of this material.
© All rights reserved. No parts of this publication may be reproduced or used
in any form or by any means without written permission of your supplier.

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CONTENTS MANUAL
Safety instructions ........................................................................................................................................... 2
Safety instructions ........................................................................................................................................... 2
Safety rules and precautionary measures ....................................................................................................... 2
About the operation manual ............................................................................................................................ 3
1. Introduction ................................................................................................................................. 5
1.1. System description of the F127-P-EL .................................................................................... 5
2. Operational.................................................................................................................................. 7
2.1. General .................................................................................................................................. 7
2.2. Control panel.......................................................................................................................... 7
2.3. Operator information and functions ....................................................................................... 8
3. Configuration............................................................................................................................... 9
3.1. Introduction ............................................................................................................................ 9
3.2. Programming SETUP-level.................................................................................................... 9
3.2.1. General .................................................................................................................................. 9
3.2.2. Overview functions SETUP level ......................................................................................... 12
3.2.3. Explanation OF SETUP-functions........................................................................................ 13
1 - Total A ...................................................................................................................... 13
2 - Flowrate A................................................................................................................. 14
3 - Total B ...................................................................................................................... 15
4 - Flowrate B................................................................................................................. 15
5 - Display ....................................................................................................................... 16
6 - Power management .................................................................................................. 17
7 - Flowmeter .................................................................................................................. 17
8 - Temperature - A........................................................................................................ 18
9 - Temperature - B........................................................................................................ 20
A - Formula ..................................................................................................................... 21
B - Analog output ............................................................................................................ 22
C - Communication (optional) ......................................................................................... 23
D - Others ....................................................................................................................... 23
4. Installation ................................................................................................................................. 24
4.1. General directions................................................................................................................ 24
4.2. Installation / surrounding conditions .................................................................................... 24
4.3. Dimensions- Enclosure ........................................................................................................ 25
4.4. Installing the hardware......................................................................................................... 27
4.4.1. Introduction .......................................................................................................................... 27
4.4.2. Voltage selection sensor supply .......................................................................................... 28
4.4.3. Terminal connectors ............................................................................................................ 29
5. Intrinsically safe applications..................................................................................................... 35
5.1. General information and instructions ................................................................................... 35
5.2. Terminal connectors Intrinsically Safe applications ............................................................. 36
5.3 Configuration Examples....................................................................................................... 38
5.4 Battery replacement instructions.......................................................................................... 40
6. Maintenance.............................................................................................................................. 41
6.1. General directions................................................................................................................ 41
Appendix A: Technical specification .............................................................................................................. 42
Appendix B: Problem solving......................................................................................................................... 45
Appendix C: Communication variables.......................................................................................................... 46
Index of this manual....................................................................................................................................... 50
List of figures in this manual .......................................................................................................................... 50

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1. INTRODUCTION
1.1. SYSTEM DESCRIPTION OF THE F127-P-EL
Functions and features
The flowcomputer Model F127-P-EL is a microprocessor driven instrument for the calculation of
standard volumetric flow or mass flow for differential flow measurement applications using flow
equations.
This product has been designed with a focus on:
ultra-low power consumption to allow long-life battery powered applications (option PB),
intrinsic safety for use in hazardous applications (option XI),
several mounting possibilities with ABS or aluminum enclosures for harsh industrial
surroundings,
ability to process all types of flowmeter signals,
transmitting possibilities with analog and communication (option) outputs.
Flowmeter and temperature input
This manual describes the unit with a pulse type input from the flowmeter "-P version".
Two flowmeters with a passive or active pulse, Namur or coil signal output can be connected to the
F127-P-EL. To power the sensor, several options are available.
This unit has two analog (0)4-20mA temperature inputs “-TA version ”. Other versions are available
to process 0-10V or PT100 temperature signals.
Standard output
Configurable passive linear 4-20mA analog output with 10-bits resolution mirroring the
calculated differential flowrate at standard conditions. Flowrate levels as well as the minimum
and maximum signal output can be tuned.
Fig. 1: Typical application for the F127-P-EL.

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Configuration of the unit
The F127-P-EL was designed to be implemented in many types of applications. For that reason, a
SETUP-level is available to configure your F127-P-EL according to your specific requirements.
SETUP includes several important features, such as K-factors, Span, measurement units, signal
selection etc. All setting are stored in EEPROM memory and will not be lost in the event of power
failure or a drained battery.
To extend the battery-life time (option), please make use of the power-management functions as
described in chapter 3.2.3.
Display information
The unit has a large transflective LCD with all kinds of symbols and digits to display measuring units,
status information, trend-indication and key-word messages.
Flowrate and totals can be displayed either with the small 8mm digits or with the 17mm digits.
A backup of the total and accumulated total in EEPROM memory is made every minute.
Options
The following options are available: isolated or active 4-20mA / 0-10V / 0-20mA analog output, full
Modbus communication RS232/485 (also battery powered), intrinsic safety, power- and sensor-
supply options, panel-mount, wall-mount and weather-proof enclosures, flame proof enclosure.
Important: for Model F127-P-EL-TA, option PM (80-230V AC power supply) is not available.

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2. OPERATIONAL
2.1. GENERAL
The F127-P-EL may only be operated by personnel who are authorized and trained by
the operator of the facility. All instructions in this manual are to be observed.
Take careful notice of the " Safety rules, instructions and precautionary measures " in
the front of this manual.
This chapter describes the daily use of the F127-P-EL. This instruction is meant for users /
operators.
2.2. CONTROL PANEL
The following keys are available:
Fig. 2: Control Panel.
Functions of the keys
This key is used to program and save new values or settings.
It is also used to gain access to SETUP-level; please read chapter 3.
This key is used to SELECT accumulated total and temperature.
The arrow-key is used to increase a value after PROG has been pressed
or to configure the unit; please read chapter 3.
Press this key twice to CLEAR the value for total.
The arrow-key is used to select a digit after PROG has been pressed or to
configure the unit; please read chapter 3.

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2.3. OPERATOR INFORMATION AND FUNCTIONS
In general, the F127-P-EL will always function at Operator level. The information displayed depends
upon the SETUP-settings. All pulses generated by the connected flowmeter are measured by the
F127-P-EL in the background, whichever screen refresh rate setting is chosen. After pressing a key,
the display will be updated quickly during a 30 second period, after which it will slow down again.
Fig. 3: Example of display information during process.
For the Operator, the following functions are available:
Display calculated differential flowrate and calculated differential total
This is the main display information of the F127-P-EL. After selecting any other information, it
will always return to this main display automatically.
Total is displayed on the upper-line of the display and flowrate on the bottom line.
It is possible to display flowrate only with the large 17mm digits; in this instance press the
SELECT-key to read the total. When "-------" is shown, then the flowrate value is too high to be
displayed. The arrows indicate the increase/decrease of the flowrate trend.
If the consumption is very low, it might be that a stable low flowrate is displayed and and a
stable totalisation; this is due to the settings of the unit.
Clear total
The value for total can be re-initialized. To do so, press CLEAR twice. After pressing CLEAR
once, the flashing text "PUSH CLEAR" is displayed. To avoid re-initialization at this stage,
press another key than CLEAR or wait for 20 seconds.
Re-initialization of total DOES NOT influence the accumulated total.
Display calculated differential accumulated total
When the SELECT-key is pressed, total and accumulated total are displayed. The
accumulated total cannot be re-initialized. The value will count up to 99,999,999,999. The unit
and number of decimals are displayed according to the configuration settings for total.
Display line temperature and calculated flowrate INLET / OUTLET
After pressing SELECT, the actual INLET / OUTLET temperature is displayed at the top line
of the display. At the bottom line, the calculated INLET / OUTLET flowrate is displayed
together with the measuring units for flowrate and temperature.
Low-battery alarm
When the battery voltage drops, it must be replaced. At first "low-battery" will flash, but as
soon as it is displayed continuously, the battery MUST be replaced shortly after!
Only official batteries may be used, or else the guarantee will be terminated. The remaining
lifetime after the first moment of indication is generally several days up to some weeks.
Fig. 4: Example of low-battery alarm.
Alarm 01-03
When "alarm" is displayed, please consult Appendix B: problem solving.

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3. CONFIGURATION
3.1. INTRODUCTION
This and the following chapters are exclusively meant for electricians and non-operators. In these,
an extensive description of all software settings and hardware connections are provided.
Mounting, electrical installation, start-up and maintenance of the instrument may only
be carried out by trained personnel authorized by the operator of the facility. Personnel
must read and understand this Operating Manual before carrying out its instructions.
The F127-P-EL may only be operated by personnel who are authorized and trained by
the operator of the facility. All instructions in this manual are to be observed.
Ensure that the measuring system is correctly wired up according to the wiring
diagrams. The housing may only be opened by trained personnel.
Take careful notice of the " Safety rules, instructions and precautionary measures " in
the front of this manual.
3.2. PROGRAMMING SETUP-LEVEL
3.2.1. GENERAL
Configuration of the F127-P-EL is done at SETUP-level. SETUP-level is reached by pressing the
PROG/ENTER key for 7 seconds; at which time, both arrows will be displayed. In order to return
to the operator level, PROG will have to be pressed for three seconds. Alternatively, if no keys are
pressed for 2 minutes, the unit will exit SETUP automatically.
SETUP can be reached at all times while the F127-P-EL remains fully operational.
Note: A pass code may be required to enter SETUP. Without this pass code access to SETUP is
denied.
To enter SETUP-level:

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Matrix structure SETUP-level:
SCROLLING THROUGH SETUP-LEVEL
Selection of function-group and function:
SETUP is divided into several function groups and functions.
Each function has a unique number, which is displayed below the word "SETUP" at the bottom of
the display. The number is a combination of two figures. The first figure indicates the function-group
and the second figure the sub-function. Additionally, each function is expressed with a keyword.
After selecting a sub-function, the next main function is selected by scrolling through all "active" sub-
functions (e.g. 1, 11, 12, 13, 14, 1, 2, 3, 31 etc.).

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To change or select a value:
To change a value, use to select the digits and to increase that value.
To select a setting, both and can be used.
If the new value is invalid, the increase signor decrease-signwill be displayed while you are
programming.
When data is altered but ENTER is not pressed, then the alteration can still be cancelled by waiting
for 20 seconds or by pressing ENTER for three seconds: the PROG-procedure will be left
automatically and the former value reinstated.
Note: alterations will only be set after ENTER has been pressed!
To return to OPERATOR-level:
In order to return to the operator level, PROG will have to be pressed for three seconds. Also, when
no keys are pressed for 2 minutes, SETUP will be left automatically.

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3.2.2. OVERVIEW FUNCTIONS SETUP LEVEL
SETUP FUNCTIONS AND VARIABLES
1 TOTAL - A
11 UNIT L - m3 - kg - lb - GAL - USGAL - bbl - no unit
12 DECIMALS 0 - 1 - 2 - 3 (Ref: displayed value)
13 K-FACTOR: 0.000010 - 9,999,999
14 DECIMALS K-FACTOR 0 - 6
2 FLOWRATE - A
21 UNIT mL, L, m3, mg, g, kg, ton, GAL, bbl, lb, cf, rev, no unit
22 TIME UNIT sec - min - hour - day
23 DECIMALS 0 - 1 - 2 - 3 (Ref: displayed value)
24 K-FACTOR 0.000010 - 9,999,999
25 DECIMALS K-FACTOR 0 - 6
26 FILTER 1 - 99
27 PERIOD 0.1 - 99.9 seconds
3 TOTAL - B
31 K-FACTOR 0.000010 - 9,999,999
32 DECIMALS K-FACTOR 0 - 6
4 FLOWRATE - B
41 K-FACTOR 0.000010 - 9,999,999
42 DECIMALS K-FACTOR 0 - 6
5 DISPLAY
51 FUNCTION total - rate
52 MEASUREMENT bi-directional - not negative - threshold - stationary
53 STATIONARY
FLOWRATE
0000.000 - 9999999 units/time unit
54 STATIONARY TOTAL 0000.000 - 9999.999 units/hr
6 POWER MANAGEMENT
61 LCD UPDATE fast - 1 sec - 3 sec - 15 sec - 30 sec - off
62 BATTERY MODE operational - shelf
7 FLOWMETER
71 SIGNAL A npn - npn_lp - reed - reed_lp - pnp - pnp_lp - namur -
coil_hi - coil_lo - act_8.1 - act_12 - act_24
72 SIGNAL B npn - npn_lp - reed - reed_lp - pnp - pnp_lp - namur -
coil_hi - coil_lo - act_8.1 - act_12 - act_24
8 TEMPERATURE - A
81 SPAN 0.000001 - 9,999,999 unit
82 DECIMALS SPAN 0 - 6
83 OFFSET 0.00 - 99,999.99
84 FILTER 1 - 99
85 CALIBRATE LOW (0)4mA
86 CALIBRATE HIGH 20mA
87 DISPLAY °C - °F - K
9 TEMPERATURE - B
91 SPAN 0.000001 - 9,999,999 unit
92 DECIMALS SPAN 0 - 6
93 OFF-SET 0.00 - 99,999.99 K
94 FILTER 1 - 99
95 CALIBRATE LOW (0)4mA
96 CALIBRATE HIGH 20mA
A FORMULA
A1 EQUATIONS TYPE EG - (fixed)
A2 EXPANSION COEFF. 0.000000 - 9.999999 (*10-3/K)
A3 NORMAL
TEMPERATURE
0.00 - 99,999.99 K
Continued next page >>

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B ANALOG
B1 OUTPUT disable - enable
B2 4mA / 0V 0000.000 - 9,999,999
B3 20mA / 10V 0000.000 - 9,999,999
B4 CUT-OFF 0.0 - 9.9%
B5 TUNE MIN - 4mA / 0V 0 - 9,999
B6 TUNE MAX- 20mA / 10V 0 - 9,999
B7 FILTER 00 - 99
C COMMUNICATION
C1 SPEED / BAUDRATE 1200 - 2400 - 4800 - 9600
C2 ADDRESS 1 - 255
C3 MODE ASCII - rtu - off
D OTHERS
D1 TYPE / MODEL
D2 SOFTWARE VERSION
D3 SERIAL NO.
D4 PASS CODE 0000 - 9999
D5 TAGNUMBER 0000000 - 9999999
3.2.3. EXPLANATION OF SETUP-FUNCTIONS
1 - TOTAL A
MEASUREMENT UNIT
11 SETUP - 11 determines the measurement unit for total, accumulated total
and pulse output for BOTH A and B.
The following units can be selected:
L - m3 - kg - lb. - GAL - USGAL - bbl - _ (no unit).
Alteration of the measurement unit will have consequences for operator
and SETUP-level values.
Please note that the K-factor has to be adapted as well; the calculation is
not done automatically.
DECIMALS
12 The decimal point determines for total, accumulated total and pulse output
the number of digits following the decimal point for BOTH A and B.
The following can be selected:
0000000 - 111111.1 - 22222.22 - 3333.333
K-FACTOR
13 With the K-factor, the flowmeter pulse signals are converted to a quantity.
The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 11), for example per
cubic meter. The more accurate the K-factor, the more accurate the
functioning of the system will be.
Example 1: Calculating the K-factor.
Let us assume that the flowmeter generates 2.4813 pulses per
liter and the selected unit is "cubic meters / m3". A cubic meter
consists of 1000 parts of one liter which implies 2,481.3 pulses
per m3. So, the K-factor is 2,481.3. Enter for SETUP - 13:
"2481300" and for SETUP - 14 - decimals K-factor "3".
Example 2: Calculating the K-factor.
Let us assume that the flowmeter generates 6.5231 pulses per
gallon and the selected measurement unit is gallons. So, the K-
Factor is 6.5231. Enter for SETUP - 13: "6523100" and for
SETUP - 14 decimals K-factor "6".

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1 - TOTAL A (CONTINUED)
DECIMALS K-FACTOR
14 This setting determines the number of decimals for the K-factor entered.
(SETUP 13). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this setting influences the accuracy of the K-factor
indirectly. (i.e. the position of the decimal point and thus the value given)
This setting has NO influence on the displayed number of digits for total
(SETUP 12)!
2 - FLOWRATE A
The settings for total and flowrate are entirely separate. In this way, different units of measurement
can be used for each e.g. cubic meters for total and liters for flowrate.
The display update time for flowrate is one second or more.
Note: these settings also influence the analog output.
MEASUREMENT UNIT
21 SETUP - 21 determines the measurement unit for flowrate for BOTH A
and B.
mL - L - m3 - mg - gr - kg - ton - GAL - bbl - lb - cf - rev
(revolutions for RPM) - _ (no unit).
Alteration of the measurement unit will have consequences for operator
and SETUP-level values.
Please note that the K-factor has to be adapted as well; the calculation is
not done automatically.
TIME UNIT
22 The flowrate can be calculated per second (SEC), minute (MIN), hour
(HR) or day (DAY). This selection is valid for BOTH A and B flow.
DECIMALS
23 This setting determines for flowrate the number of digits following the
decimal point for BOTH A and B. The following can be selected:
00000 - 1111.1 - 2222.22 - 3333.333
K-FACTOR
24 With the K-factor, the flowmeter pulse signals are converted to a flowrate.
The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 21), for example per
liter. The more accurate the K-factor, the more accurate the functioning of
the system will be. For examples read SETUP 13.
DECIMALS K-FACTOR
25 This setting determines the number of decimals for the K-factor
(SETUP 24). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this SETUP - influences the accuracy of the K-factor
indirectly.
This setting has NO influence on the displayed number of digits for
"flowrate" (SETUP 23)!
FILTER
26 This function is used to stabilize the flowrate reading. With the help of this
digital filter a more stable but less actual reading can be obtained.
The filter principal is based on three input values: the filter level (01-99),
the last calculated flowrate on both the A / B flow and the last average
value. The higher the filter level, the longer the response time on a value
change will be.
Below, several filter levels with there response times are indicated:
Continued next page >>>

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2 - FLOWRATE A (CONTINUED)
FILTER VALUE RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE.
TIME IN SECONDS
50%INFLUENCE 75% INFLUENCE 90%INFLUENCE 99%INFLUENCE
01 filter disabled filter disabled filter disabled filter disabled
02 0.1 second 0.2 second 0.4 second 0.7 second
03 0.2 second 0.4 second 0.6 second 1.2 seconds
05 0.4 second 0.7 second 1.1 seconds 2.1 seconds
10 0.7 second 1.4 seconds 2.2 seconds 4.4 seconds
20 1.4 seconds 2.8 seconds 4.5 seconds 9.0 seconds
30 2.1 seconds 4 seconds 7 seconds 14 seconds
50 3.5 seconds 7 seconds 11 seconds 23 seconds
75 5.2 seconds 10 seconds 17 seconds 34 seconds
99 6.9 seconds 14 seconds 23 seconds 45 seconds
PERIOD
27 The flowrate is calculated by counting the number of pulses within a
certain time, for example 1 second. The longer the time the more accurate
the flowrate will be. The maximum value is 999.9 seconds.
Note: this setting does influence the update time for the analog output
directly (maximum update 10 times a second). If the output response is
too slow, decrease the number of pulses.
Note: the shorter the time, the higher the power consumption of the unit
will be (important for battery powered applications).
3 - TOTAL B
K-FACTOR
31 With the K-factor, the flowmeter pulse signals are converted to a quantity.
The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 11), for example per
cubic meter. The more accurate the K-factor, the more accurate the
functioning of the system will be.
For examples: please read SETUP 13
DECIMALS K-FACTOR
32 This setting determines the number of decimals for the K-factor
(SETUP 31). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this function influences the accuracy of the K-factor
indirectly.
4 - FLOWRATE B
K-FACTOR
41 With the K-factor, the flowmeter pulse signals are converted to a flowrate.
The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 21), for example per
liter. The more accurate the K-factor, the more accurate the functioning of
the system will be. For examples read SETUP 13.
DECIMALS K-FACTOR
42 This setting determines the number of decimals for the K-factor
(SETUP 24). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this SETUP - influences the accuracy of the K-factor
indirectly.

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5 - DISPLAY
FUNCTION
51 The large 17mm digits can be set to display total or flowrate.
When "total" is selected, both total and flowrate are displayed
simultaneously.
When "flowrate" is selected, only flowrate will be displayed with it’s
measuring unit while total will be displayed after pressing SELECT.
MEASUREMENT
52 To solve undesired display readings during low or even negative
consumption situations, four different measurement methods have been
implemented. Be aware that the selection does influence the analog
output value (ref. flowrate) as well.
bi-directional
Displayed flowrate: positive and negative
Displayed total: positive and negative
not negative
Displayed flowrate: only positive or zero
Displayed total: positive and negative
threshold
Displayed flowrate: as soon as the flowrate is lower as setting 53 or
negative, flowrate zero will be displayed.
Displayed total: as soon as the flowrate is lower as setting 53 or negative,
totalisation will stop.
stationary
Displayed flowrate: as soon as the flowrate is lower as setting 53 or
negative, the stationary flowrate (setting 53) will be displayed.
Displayed total: as soon as the flowrate is lower as setting 53 or negative,
stationary totalisation (setting 54) will be activated. However, if the value
of setting 54 is zero, totalisation will be positive and negative.
STATIONARY
FLOWRATE
53
Enter here the flowrate according setting 52 - threshold or stationary.
The time and measuring units are according to FLOWRATE - setting 21
and 22.
In case of selection “threshold”: flowrate zero will be displayed as soon as
the flowrate will be lower as this setting.
In case of selection “stationary”: as soon as the flowrate is lower as this
setting, this flowrate will be displayed.
However, if the flowmeters do not generate pulses, the displayed flowrate
will be zero
STATIONARY TOTAL
54 Enter here a flowrate per hour according setting 52 - stationary.
The measuring unit is according to TOTAL - setting 11.
This flowrate is converted to a total which will be used as long as the
flowrate is lower as setting 53.
However, if the flowmeters do not generate pulses, the totalisation will
stop.
This function is disabled if value zero has been entered.

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6 - POWER MANAGEMENT
When used with the internal battery option, the user can expect reliable measurement over a long
period of time. The F127-P has several smart power management functions to extend the battery life
time significantly. Two of these functions can be set:
LCD NEW
61 The calculation of the display-information influences the power
consumption significantly. When the application does not require a fast
display update, it is strongly advised to select a slow refresh rate.
Please understand that NO information will be lost; every pulse will be
counted and the output signals will be generated in the normal way.
The following can be selected:
Fast - 1 sec - 3 sec - 15 sec - 30 sec - off.
Example 3: Battery life-time
battery life-time with a coil pick-up, 1KHz. pulses and FAST
update: about 2 years.
battery life-time with a coil pick-up, 1KHz. pulses and 1 sec
update: about 5 years.
Note: after a button has been pressed by the operator - the display
refresh rate will always switch to FAST for 30 seconds. When "OFF" is
selected, the display will be switched off after 30 seconds and will be
switched on as soon as a button has been pressed.
BATTERY-MODE
62 The unit has two modes: operational or shelf.
After "shelf" has been selected, the unit can be stored for several years; it
will not count pulses, the display is switched off but all settings and totals
are stored. In this mode, power consumption is extremely low.
To wake up the unit again, press the SELECT-key twice.
7 - FLOWMETER
SIGNAL A
71 The F127-P is able to handle several types of input signal. The type of
flowmeter pickup / signal for input A is selected with SETUP 71.
Note: The selections "active pulse" offer a detection level of 50% of the
supply voltage.
Read also par. 4.4.3. Flowmeter input terminal 09-11.
SIGNAL B
72 The F127-P is able to handle several types of input signal. The type of
flowmeter pickup / signal for input B is selected with SETUP 72.
Note: The selections "active pulse" offer a detection level of 50% of the
supply voltage.
Read also par. 4.4.3. Flowmeter input terminal 12-14.
TYPE OF SIGNAL EXPLANATION RESISTANCE FREQ./MV REMARK
NPN NPN input 100K
pull-up 6 kHz. (open collector)
NPN - LP NPN input
with low pass filter 100K pull-up 2.2 kHz. (open collector) less sensitive
REED Reed-switch input 1M
pull-up 1.2 kHz.
REED - LP Reed-switch input
with low pass filter 1M pull-up 120 Hz. Less sensitive
PNP PNP input 100K
pull-down 6 kHz.
PNP - LP PNP input
with low pass filter 100K pull-down 700 Hz. Less sensitive
NAMUR Namur input 820 Ohm
pull-down 4 kHz. External power
required
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HF127PEN_EL_TA_v0501_04
Page 18
COIL HI High sensitive coil input - 20mV
p.t.p. Sensitive for disturbance!
COIL LO Low sensitive coil input - 90mV
p.t.p. Normal sensitivity
ACT_8.1 Active pulse input
8.1 VDC 3K9 10KHz.
External power
required
ACT_12 Active pulse input
12 VDC 4K 10KHz.
External power
required
ACT_24 Active pulse input
24 VDC 3K 10KHz.
External power
required
8 - TEMPERATURE - A
Conversion formula’s temperature units:
x K = (x-273,15)°C = (9/5x-459,67)°F
x°C = (x+273,15) K = 9/5x+32°F
x°F = 5/9(x-32)°C = 5/9(x+459,67) K
Read also par. 4.4.3. Temperature input terminal 12-14.
SPAN
81 With this setting, the measurement range of the (0)4-20mA temperature
sensor is determined in Kelvin (K). See also setting 82 - decimals span.
Example Calculating the span for temperature.
Let us assume that the sensor generates the minimum
signal (e.g.4mA) at a temperature of -100°C (173,15 K)
and the maximum signal (e.g. 20mA) is generated at 250
°C (523.15 K). Than the span is 350 K.
Enter for SETUP - 81: "0035000" if decimals for span
are two.
DECIMALS SPAN
82 According setting 81, the number of decimals for span have to be set.
OFFSET
83 The flow computer needs to know the measured temperature at minimum
signal. In above example "173,15 K".
Remark: if you want to work with a “fixed” temperature, enter here the
fixed line temperature in K and make sure that the span is set to zero.
Value to be entered: 0.00 - 99,999.99 K
FILTER
84 The analog output signal of a sensor does mirror the actual temperature.
This signal is measured several times a second. The value measured is a
“snap-shot” of the real temperature as it will be fluctuating.
With the help of this digital filter a stable and accurate reading can be
obtained while the filter level can be set to a desired value.
The filter principal is based on three input values: the filter level (01-99),
the last measured analog value and the last average value. The higher
the filter level, the longer the response time on a value change will be.
FILTER VALUE RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE.
TIME IN SECONDS
50%INFLUENCE 75% INFLUENCE 90%INFLUENCE 99%INFLUENCE
01 filter disabled filter disabled filter disabled filter disabled
02 0.3 seconds 0.5 seconds 1.0 seconds 1.8 seconds
03 0.5 seconds 1.0 seconds 1.5 seconds 3 seconds
05 1.0 seconds 1.8 seconds 2.8 seconds 5.3 seconds
10 1.8 seconds 3.5 seconds 5.6 seconds 11 seconds
20 3.5 seconds 7.0 seconds 11 seconds 23 seconds
30 5.3 seconds 10 seconds 17 seconds 34 seconds
50 8.8 seconds 17 seconds 29 seconds 57 seconds
75 13 seconds 26 seconds 43 seconds 86 seconds
99 17 seconds 34 seconds 57 seconds 114 seconds
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8 - TEMPERATURE - A (CONTINUED)
CALIBRATE LOW
85 With this setting it is possible to calibrate the input value for (0)4mA as the
signal from the sensor might not be exact 4.0 mA (or 0.0 mA) at “offset-
temperature” - SETUP 83.
This function will measure the real output value at “offset-temperature”.
Warning: be very sure that the offered signal is correct
before the calibration is executed as this function has major
influences on the accuracy of the system!
After pressing PROG, three settings can be selected:
CALIBRATE: with this setting, the input will be calibrated with the
actual “(0)4mA” value. After pressing enter, CAL SET will be
displayed as soon as the calibration is completed. From that moment,
the analog value must be more than the calibrated value before the
signal will be processed.
DEFAULT: with this setting, the manufactures value is re-installed.
CAL SET: to select the last calibrated value.
CALIBRATE HIGH
86 With this setting it is possible to calibrate the input value for 20mA as the
signal from the sensor might not be exact 20.0 mA at maximum
temperature (which is the offset-value plus the Span value).
This function will measure the real output value at maximum temperature.
Warning: be very sure that the offered signal is correct
before the calibration is executed as this function has major
influences on the accuracy of the system!
After pressing PROG, three settings can be selected:
CALIBRATE: with this setting, the input will be calibrated with the
actual “20mA” value. After pressing enter, CAL SET will be displayed
as soon as the calibration is completed. From that moment, the
analog value must be less than the calibrated value for a reliable
measurement.
DEFAULT: with this setting, the manufactures value is re-installed.
CAL SET: to select the last calibrated value.
DISPLAY UNIT
87 SETUP - 87 determines the displayed unit for the Operator
The following units can be selected:
°C - °F - K

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9 - TEMPERATURE - B
Conversion formula’s temperature units:
x K = (x-273,15)°C = (9/5x-459,67)°F
x°C = (x+273,15) K = 9/5x+32°F
x°F = 5/9(x-32)°C = 5/9(x+459,67) K
Read also par. 4.4.3. Temperature input terminal 12-14.
SPAN
91 With this setting, the measurement range of the (0)4-20mA temperature
sensor is determined in Kelvin (K). See also setting 92 - decimals span.
For explanation of this function: please read “8 - Temperature A”.
DECIMALS SPAN
92 According setting 91, the number of decimals for span have to be set.
OFFSET
93 The flow computer needs to know the measured temperature at minimum
signal.
Remark: if you want to work with a “fixed” temperature, enter here the
fixed line temperature in K and make sure that the span is set to zero.
FILTER
94 With the help of this digital filter a stable and accurate reading can be
obtained while the filter level can be set to a desired value.
For explanation of this function: please read “8 - Temperature A”.
CALIBRATE LOW
95 With this setting it is possible to calibrate the input value for (0)4mA as the
signal from the sensor might not be exact 4.0 mA (or 0.0 mA) at “offset-
temperature” - SETUP 93.
This function will measure the real output value at “offset-temperature”.
Warning: be very sure that the offered signal is correct
before the calibration is executed as this function has major
influences on the accuracy of the system!
For explanation of this function: please read “8 - Temperature A”.
CALIBRATE HIGH
96 With this setting it is possible to calibrate the input value for 20mA as the
signal from the sensor might not be exact 20.0 mA at maximum
temperature (which is the offset-value plus the Span value).
This function will measure the real output value at maximum temperature.
Warning: be very sure that the offered signal is correct
before the calibration is executed as this function has major
influences on the accuracy of the system!
For explanation of this function: please read “8 - Temperature A”.