Micronics U1000MKII FM User manual

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 1
U1000MKII FM
Ultrasonic Flowmeter
User Manual
Micronics Ltd, Knaves Beech Business Centre, Davies Way, Loudwater,
High Wycombe, Bucks HP10 9QR
Telephone: [phone] E-mail: [email protected]
www.micronicsflowmeters.com

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 2
Contents
1 General Description......................................................................................................................................3
2 Quick start procedure...................................................................................................................................4
3 How does it work?........................................................................................................................................5
4 User interface ...............................................................................................................................................6
4.1 Key switches ........................................................................................................................................ 6
5 Installing the U1000MKII-FM........................................................................................................................7
5.1 Preparation.......................................................................................................................................... 8
5.2 Sensor separation................................................................................................................................ 8
5.3 Adaptors for small pipes.................................................................................................................... 10
5.4 Attaching the U1000MKII-FM to the pipe......................................................................................... 11
5.5 U1000MKII-FM Interface Cables ....................................................................................................... 12
5.6 Connecting the U1000MKII-FM to the Supply................................................................................... 12
5.7 Pulse Output connection................................................................................................................... 13
5.8 Current Output (If fitted).................................................................................................................. 13
5.9 ModbusConnections (if fitted) .......................................................................................................... 13
5.10 Cable Screen ...................................................................................................................................... 13
6 Powering up for the first time ....................................................................................................................14
6.1 How to enter the Pipe ID................................................................................................................... 15
6.2 Pulse output ...................................................................................................................................... 16
6.2.1 Volumetric mode....................................................................................................................... 16
6.2.2 Frequency mode........................................................................................................................ 16
6.2.3 Flow Alarm - High/Low Flow or Signal loss................................................................................ 17
6.3 4-20mA Current Output (if fitted) ..................................................................................................... 17
6.4 Modbus.............................................................................................................................................. 18
7 Subsequent Power-ON Sequence ..............................................................................................................20
8 Password Controlled Menus ......................................................................................................................20
9General Procedure for changing menu settings .........................................................................................20
9.1.1 Selection menus......................................................................................................................... 20
9.1.2 Data entry menus ...................................................................................................................... 21
9.2 User Password controlled menu structure........................................................................................ 21
10 Diagnostics Menu .......................................................................................................................................27
11 Relocation of guide rail...............................................................................................................................28
12 Appendix I –U1000MKII-FM Specification.................................................................................................29
13 Appendix II –Default values.......................................................................................................................30
14 Appendix III –Error and Warning Messages ..............................................................................................31
15 Declaration of Conformity..........................................................................................................................34

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 3
1 General Description
•Fixed installation, clamp-on flowmeter
•Easy to install
•Requires the minimum of information to be entered by the user
•Both the electronics and guide rail housings form an integral unit
•Simple attachment to the pipe using the supplied jubilee clips
•Power to the unit is provided by an external 12 - 24V ac/dc power supply (7VA minimum)
•Operates on steel, stainless steel, copper and plastic pipes with internal diameter in the
range 20mm (0.8”) to 165mm (6.5”) depending on the product purchased.
•Compact, rugged and reliable, the U1000MK-FM has been designed to provide sustained
performance in industrial environments
U1000MKII-FM standard features include:
▪2 line x 16 character LCD with backlight
▪4-key keypad
▪Isolated pulse output
▪Universal guide rail for setting pre-assembled transducers
▪Two sets of self- adhesive Gel pad acoustic couplant
▪Continuous signal monitoring
▪Password protected menu operation for secure use
▪Operates from external 12 to 24Vac or dc power supplies
▪Small pipe adaptors
Options
•Pipe range
➢20mm inside diameter to 114mm inside diameter pipe
➢115mm inside diameter to 165mm inside diameter pipe
•4-20mA current output
•Modbus output
•Pulse output is standard
Typical applications
▪Hot water metering and flow measurement
▪Flow measurement for Heat Metering
▪Chilled water metering and flow measurement
▪Potable water metering and flow measurement
▪Process water metering and flow measurement
▪Ultra-pure water metering and flow measurement.

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 4
2 Quick start procedure
The following procedure details the steps required to set up the flow meter. See the sections
referred to if you are unsure about how to install the instrument.
1. Wire the electronics up to a 12 to 24V ac or dc power supply (7VA minimum per instrument)
via the Blue and Brown wires. (See Section 5.6)
2. Establish a suitable location for the flow meter on a straight length of pipe clear of bends and
valves or similar obstructions. (See Sections 5 and 5.1)
3. Determine the pipe internal diameter and material.
4. Either use the table in the manual, or power up the instrument to determine the correct
separation code. (See Sections 5.2 or 6)
5. Set the sensors to the correct separation by adjusting the sensor holding screws so the
sensor can slide in the slot. (See Section 5.2)
6. Select any adaptors needed for pipes with an outside diameter of less than 60mm, inside
diameter will typically be less than 50mm. (See Section 5.3)
7. Apply the Gel pads or couplant to the sensors and mount the guide rail on the pipe using the
banding provided, then remove the sensor holding screws. (See Section 5.4)
8. Plug in the flow sensors and DO NOT clip the electronics assembly on to the guide rail at
this stage.
9. Power up the instrument and check that flow readings can be obtained (See Sections 6 and
7)
10. Once good readings have been obtained any further changes, such as selecting different
units, can be made via the Password Controlled Menu. (See Section 8)
11. When happy with set up and readings, clip the electronic assembly to the guide rail, and
tighten screw to complete assembly
12. If the Modbus interface is being used then the address, and data rate, and configuration of
the instrument must be set using the modbus Menu. (See Section 6.4). The default address
is 1, the default data rate is 38400 baud, and the default comms configuration is 8-None-2.

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 5
3 How does it work?
The U1000MKII-FM is a clamp-on, ultrasonic flowmeter that uses a cross correlation transit time
algorithm to provide accurate flow measurements.
An ultrasonic beam of a given frequency is generated by applying a repetitive voltage pulse to the
transducer crystals. This transmission goes first from the Downstream (blue) transducer to the
Upstream transducer (red) as shown in the upper half of Figure 1. The transmission is then made in
the reverse direction, being sent from the Upstream transducer (red) to the Downstream transducer
(blue) as shown in the lower half of Figure 1. The speed at which the ultrasound is transmitted
through the liquid is accelerated slightly by the velocity of the liquid through the pipe. The
subsequent time difference T1 –T2 is directly proportional to the liquid flow velocity.
Figure 1 Principle of Transit-Time operation

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Issue 2.0 June 18 Page 6
4 User interface
Figure 2 illustrates the U1000MKII-FM user interface comprising:-
•One 2 line x 16 character LCD with backlight
•Four tactile key switches
•Two LEDs
4.1 Key switches
4-20mA LED is illuminated when the 4-20mA output is enabled.
Pulse LED is illuminated when the Pulse, Frequency or Alarm functions are enabled.
Selection key. Allows the user to select between options on the
display.
Used to increment the value of each digit in numeric entry fields.
Used to decrement the value of each digit in numeric entry
fields.
Used to enter the selection displayed or terminate the data
entry. Pressing this key will take the user to another menu or to
the Flow Reading screen.
>

Figure 2 U1000MKII-FM User Interface
V
Λ

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Issue 2.0 June 18 Page 7
5 Installing the U1000MKII-FM
Figure 3 Location of Transducers
In many applications an even flow velocity profile over a full 360° is unattainable due, for example,
to the presence of air turbulence at the top of the flow and also possibly sludge at the bottom of the
pipe. Experience has shown that the most consistently accurate results are achieved when the
transducer guide rails are mounted at 45°with respect to the top of the pipe.
The U1000MKII-FM equipment expects a uniform flow profile as a distorted flow will produce
unpredictable measurement errors. Flow profile distortions can result from upstream disturbance
such as bends, tees, valves, pumps and other similar obstructions. To ensure a uniform profile the
transducers must be mounted far enough away from any cause of distortion such that it no longer
has an effect.
To obtain the most accurate results the condition of both the liquid and the pipe must be suitable to
allow ultrasound transmission along the predetermined path. It is important that liquid flows
uniformly within the length of pipe being monitored, and that the flow profile is not distorted by any
upstream or downstream obstructions. This is best achieved by ensuring there is a straight length of
pipe upstream of the transducers of at least 20 times the pipe diameter, and 10 times the pipe
diameter on the downstream side, as shown in Figure 3. Flow Measurements can be made on
shorter lengths of straight pipe, down to 10 diameters upstream and 5 diameters downstream, but
when the transducers are mounted this close to any obstruction the resulting errors can be
unpredictable.
Key Point: Do not expect to obtain accurate results if the transducers are positioned close to any
obstruction that distorts the uniformity of the flow profile.
Micronics Ltd accepts no responsibility or liability if product has not been installed in accordance
with the installation instructions applicable to the product.
Possible Air
Possible
sludge
Guide
rail
Uniform Flow Profile
Distorted Flow Profile
Flow
Flow
Valid transducer location
20 x Diameter
10 x Diameter
45°

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Issue 2.0 June 18 Page 8
5.1 Preparation
1. Before attaching the transducers first ensure that the proposed location satisfies the distance
requirements shown in Figure 3 otherwise the resulting accuracy of the flow readings may be
affected.
2. Prepare the pipe by degreasing it and removing any loose material or flaking paint in order to
obtain the best possible surface. A smooth contact between pipe surface and the face of the
transducers is an important factor in achieving a good ultrasound signal strength and therefore
maximum accuracy.
5.2 Sensor separation
Depending on what pipe range has been purchased the sensor must be positioned at the correct
distance for the pipe size and type they will be used on. The table below gives the typical separation
code for a given pipe material and inside diameter, using a pipe wall thickness algorithm. The
instrument displays the required separation after the pipe internal diameter and material are
entered.
Pipe ID
Pipe ID
Water
Glycol
PipeID
Pipe ID
Water
Glycol
mm
inches
S/Steel
S/Steel
mm
inches
M/Steel
M/Steel
20-22
0.79-0.87
A-3
A-3
21-22
0.83-0.87
C-3
C-3
26-29
1.02-1.14
B-2
B-2
27
1.06
D-2
E-3
34-36
1.34-1.42
C-2
C-4
35-36
1.38-1.42
C-4
C-4
37-40
1.46-1.57
B-3
D-4
41-44
1.61-1.73
C-3
F-3
52-58
2.05-2.29
B-2
D-3
52-54
2.05-2.13
C-4
C-4
59-64
2.32-2.52
A-3
F-3
62-65
2.44-2.56
F-3
F-3
72-79
2.83-3.11
B-3
E-5
76-79
2.99-3.11
E-5
G-4
86-92
3.39-3.62
C-3
B-4
88-94
3.46-3.70
B-4
B-4
99-105
3.90-4.13
D-3
C-4
95-101
3.74-3.98
D-3
C-4
125-131
4.92-5.16
F-3
E-4
122-128
4.80-5.04
F-3
E-4
152-158
5.98-6.22
E-5
G-4
150-156
5.90-6.14
E-5
G-4
Pipe ID
Pipe ID
Water
Glycol
Pipe ID
Pipe ID
Water
Glycol
mm
inches
PVC U
PVC U
mm
inches
Copper
Copper
22-23
0.87-0.90
C-3
C-3
20-39
0.79-1.54
B-1
B-1
27-28
1.06-1.10
D-2
C-3
20-39
0.79-1.54
B-1
B-1
36-37
1.42-1.45
C-4
C-4
20-39
0.79-1.54
B-1
B-1
43-45
1.69-1.77
C-3
B-4
20-39
0.79-1.54
B-1
A-2
56-59
2.20-2.32
E-3
E-3
47-53
1.85-2.09
C-1
C-1
67-69
2.64-2.71
E-4
D-5
61-67
2.40-2.64
A-3
A-3
78-81
3.07-3.19
D-2
C-3
68-74
2.68-2.91
C-2
B-3
95-101
3.74-3.97
D-3
C-4
96-102
3.78-4.02
B-4
B-4
109-115
4.29-4.53
E-3
D-4
117-123
4.61-4.84
E-3
D-4
122-128
4.80-5.04
F-3
E-4
146-152
5.75-5.98
D-5
D-5
143-149
5.63-5.87
F-4
E-5
157-162
6.18-6.34
G-4
F-5
Figure 4 Separation Table

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 9
The diagram below shows how to adjust the separation of the sensors
Figure 5 Separation Setting
NOTE. When the sensors have been moved to the correct setting and the guide rail is attached to
the pipe REMOVE the sensor holding screws, which will allow the spring loaded transducers to
make contact with the pipe.

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Issue 2.0 June 18 Page 10
5.3 Adaptors for small pipes
Figure 6 Pipe Adaptors
Adaptors are supplied for use on small pipes. The diagrams above show how these are fitted
around the pipe. The top pipe adaptor clips into the ends of the guide rail.
40 to 60mm outside diameter
Less than 40mm outside diameter
Greater than 60mm outside diameter

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Issue 2.0 June 18 Page 11
5.4 Attaching the U1000MKII-FM to the pipe
After applying the Gel pads centrally on the sensors, then follow the four steps shown in Figure 7
below to attach the U1000MKII-FM to the pipe.
Remove the covers from the Gel pads.
Ensure there are no air bubbles between pad
and sensor base.
Check separation distance table on page 8 or
program unit before clamping guide rail to
pipe, using the supplied banding. Then release
and REMOVE sensor locking screws.
Connect sensors to the electronics assembly
before applying power. Sensor leads can be
connected either way round.
Confirm the unit is working correctly before
attaching the electronic assembly onto guide
rail assembly.
Figure 7 simple steps to attaching the U1000MKII on the pipe
Note…The locking screws and washers should be kept in case it is necessary to change the
location of the guide rail and sensors. See the relocation section for the procedure to do this
.

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Issue 2.0 June 18 Page 12
5.5 U1000MKII-FM Interface Cables
The U1000MKII-FM interface cable supplied is a 6-core cable for power, 4-20mA and pulse output
connections and a separate 4 core plug-in cable for the Modbus connections.
The un-insulated wire is the connection to the screen of the cable and should be earthed for full
immunity to electrical noise.
5.6 Connecting the U1000MKII-FM to the Supply
The U1000MKII-FM will operate within the voltage range 12 - 24V ac/dc. The supply must have a
minimum rating of 7VA per instrument. Connect the external power supply to the Brown and Blue
wires of the six-core cable.
For safety, connecting the U1000MKII to a power supply via a mains rated transformer is the
responsibility of the installer to conform to the regional voltage safety directives.
Figure 8. U1000MKII-FM Interface and Modbus Cables

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5.7 Pulse Output connection
The isolated pulse output is provided by a SPNO/SPNC MOSFET relay which has a maximum load
current of 500mA and maximum load voltage of 48V AC. The relay also provides 2500V isolation,
between the sensor’s electronics and the outside world.
The pulse output is available at the White and Green wires. Electrically this is a volt, or potential free
contact, and when selected as a low flow alarm is configurable NO/NC.
5.8 Current Output (If fitted)
The isolated 4-20mA is a current source and can drive into a maximum load of 620Ω.
The 4-20mA current output is available at the Red and Black wires.
The polarities are shown Page 12 Figure 8.
The alarm current due to a flow outside the range specified or due to a loss of signal is set at
3.5mA.
5.9 Modbus Connections (if fitted)
A lead is provided for the Modbus connections that plugs into the electronics assembly near the
power cable entry. The Brown is the +ve bus wire and the Black is the –ve bus wire. Both White
wires go to ground.
Modbus Connector Cable Part - Binder 99-9210-00-04 (Front View)
For reliable operation of a Modbus network the cable type and installation must comply with
requirements in the Modbus specification document “MODBUS over Serial Line Specification &
Implementation guide V1.0”.
5.10Cable Screen
For full immunity to electrical interference the screen of the power/pulse output cable and modbus
cable should be connected to Earth.

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Issue 2.0 June 18 Page 14
6 Powering up for the first time
Powering up for the first time will initiate the sequence shown in Figure 9:
Figure 9 Initial power up screens
1. The start-up screen is displayed for 5 seconds.
2. The user enters the pipe ID and then the material by scrolling through the available list. (Refer to
section 5.2)
3. The U1000MKII-FM checks for a valid signal.
4. If a valid signal is found, signal strength and flow magnitude are displayed. The signal strength
should be at least 40% for reliable operation. The direction of flow when powered up will be set as
that for positive flow. The current output and pulse output will relate to the flow in this direction. If the
flow is reversed then the flow rate will still be displayed but the activity indication will change from an
asterisk to an exclamation mark. No pulses will be generated, and the current will go to the 3.5mA
alarm state if the flow is reversed.
If the flow value is displayed as “-----“ this indicates that there is no usable signal from the sensors.
The cause of this could be:
•Incorrect pipe data
•No Gel pad or grease on the sensor
•Sensor not in contact with the pipe
•Very poor pipe condition-surface/inside
•Air in the liquid/pipe

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 15
Please note:
There is little available data on the specific heat capacity (K factor) for water glycol
mixes and there is no practical method of determining the percentage of glycol in a
system or the type of glycol in use. The calculations are based on a Water/Ethylene
glycol mix of 30%.
In practical terms the results should not be considered more than an approximation
as:
The fluid speed of sound can vary between 1480ms and 1578ms
No temperature compensation curve is available for water/glycol mixes,
The percentage of Glycol can vary the specific heat capacity from 1.00 to 1.6 J/M3* K
The type of glycol added can change the specific heat capacity and fluid speed of
sound considerably.
The Factory enabled user set-up of the application relies on the installer to set the
correct operating parameters, a considerable variation in results can be obtained
from incorrectly set-up units.
6.1 How to enter the Pipe ID
Figure 10 shows the Enter Pipe ID screen after an initial power up.
Initially, the hundreds unit (050.0) will blink.
Press
the
key to increment the hundreds digit (050.0) in the sequence 0, 1.
Press once to increment digit between 0 and 1.
Press
the
key to decrement the hundreds digit in the sequence 1, 0.
Press once to decrement digit between 1 and 0.
Press
the
key to move to the tens digit (050.0). The tens digit should now blink.
Increment the tens digit in the sequence 0,1,2,3,4,5,6,7,8,9,0 using
the key. Press once to increment digit through the numeric
sequence. Decrement the tens digit in the sequence
9,8,7,6,5,4,3,2,1,0,9 using the key. Press once to increment
digit through the numeric sequence.
Λ
V
Figure 10 Enter Pipe ID Screen (Metric)
Λ
V

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Press
the
key to move to the units digit (050.0). The units digit should now blink.
Increment or decrement the units digit in an identical manner to the
tens digit described above.
Press
the
key to move to the decimal digit (050.0). The decimal digit should
now blink. Increment or decrement the decimal digit in an identical
manner to the tens digit described above.
Press
the
Use
key to enter the Pipe ID numerical value, and move to the next
screen
and
keys to scroll through the pipe materials and
then press
To select the material and complete the setup
procedure.
If any of the parameters need to be changed from the default values, for example different units are
required, and then the menu system must be activated via the password menus (see section 8).
6.2 Pulse output
Pulse output can be set up to operate one of four modes, namely volumetric, frequency, Low Flow
Alarm and Loss of Flow (Signal) Alarm. The Alarm function allows the user to set the alarm to
Normally Open or Normally Closed.
6.2.1 Volumetric mode
In Volumetric mode, each pulse output represents a measured volume of 10 litres (default value). In
Volumetric mode, with the Vol per Pulse set to 1 and the pulse width set to 25ms, the maximum
number of pulses that can be output (without storage) is 1/(0.050*2) = 10 pulses per second. If the
flow rate in the pipe is such that more than 20 pulses per second are generated, a Pulse Overflow
error may eventually occur if the stored number of pulses exceeds 1000. To avoid this, set the Vol
per Pulse to 10 litres, or reduce the Pulse Width value.
6.2.2 Frequency mode
In Frequency mode, the pulse output frequency is proportional to the flow rate within a specified
frequency range of 1 –200Hz. The units of the flow rate are fixed as litres per second.
The conversion factors from imperial units are:-


>
>
Pipe material
Steel
V
Λ

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 17
US gallons/minute multiply by 0.06309
US gallons/hour multiply by 0.00105
Imperial gallons/minute multiply by 0.07577
Imperial gallons/hour multiply by 0.001263
6.2.3 Flow Alarm - Low Flow or Signal loss
It is possible to use the pulse output as a High/Low Flow Alarm or a Signal Loss Alarm.
For the High/Low Alarm the user can set a range between 0 and 9999 (no decimal places), in the
same units being used to measure flow. The default setting is normally open, but the user can select
between N/O and N/C. There is a 2.5% hysteresis on the switching of the output. Once turned on
the flow rate must rise by 2.5% more than the set value to turn it on/off again.
If the flow reading (Signal) is lost, as indicated by the flow rate being displayed as “-----“, the alarm
will be triggered. The Pulse LED will indicate the state of the alarm. The default setting is normally
open, but the user can select between N/O and N/C.
6.3 4-20mA Current Output (if fitted)
The default 4-20mA output setting is ON, and the 4-20mA LED on the keypad will be illuminated.
The default flow for 20mA output will be automatically set depending on the pipe size. The default
flow for 4mA is 0. This can be changed, see section 8.
If the flow reading is greater than that set as the 20mA value, or there is negative flow, or no flow
signal can be detected, then an alarm current of 3.5mA will generated.
Note: The 4-20mA current output is factory calibrated.

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6.4 Modbus(if fitted)
The Modbus RTU interface is configured via the Modbus sub menu in the password controlled
menu.
The data rate can be selected in the range 1200 to 38400 baud.
The address can be set in the range 1 to 126.
Polling Rate 1000ms (1sec). Time out after 5 seconds.
The instrument responds to the “read holding registers” request (CMD 03).
If the flow reading is invalid then the flow value will be zero.
If a temperature sensor goes out of range then the value will go to -11.
Both of these faults will set the relevant status bit.The following registers are available.
Modbus
Register
Register
Offset
Type
Typical
Contents
Meaning
Notes
n/a
n/a
Byte
0x01
Instrument Address
n/a
n/a
Byte
0x03
Instrument Command
n/a
n/a
Byte
0x40
Number of bytes to read
40001
0
Int-16
0x00
Device ID
0xAC Energy Meter
0xac
40002
1
Int-16
0x00
Status
0x0000 OK
Not[0x0000] Fault
0x00
40003
2
Int-16
0x00
System Type
0x04 Heating system
0x0C Chiller system
0x04
40004
3
Int-16
0x00
Serial Identifier
0x01
40005
4
Int-16
0x23
0x45
40006
5
Int-16
0x60
0x00
40007
6
iee754
0x40
Measured Velocity
Units in m/s
0x1f
40008
7
0x67
0xd3
40009
8
iee754
0x41
Measured Flow
Units in m3/hr for
Metric Units
in US Gal/m for
Imperial
0x8c
40010
9
0xd8
0xb0
40011
10
iee754
0x42
Calculated Power
Units in kW for Metric
Units in BTU/s for
Imperial
0x1c
40012
11
0x2e
0x34
40013
12
iee754
0x44
Calculated Energy
Units in kWh for Metric
Units in kBTU for
Imperial
0x93
40014
13
0xc6
0xe8

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On a unit set to Imperial the flow in US Gallons.
Figure 12 Modbus registers
40015
14
iee754
0x41
Measured Temperature (Hot)
Units in Degrees Celsius for
Metric Units in Degrees
Fahrenheit for Imperial
0x98
40016
15
0x00
0x00
40017
16
iee754
0x41
Measured Temperature (Cold)
Units in Degrees Celsius for
Metric Units in Degrees
Fahrenheit for Imperial
0x88
40018
17
0x00
0x00
40019
18
iee754
0x40
Measured Temperature
(Difference)
Units in Degrees Celsius for
Metric Units in Degrees
Fahrenheit for Imperial
0x00
40020
19
0x00
0x00
40021
20
iee754
0x60
Measured Total
Units in m3 for Metric
Units in US Gal for Imperial
0xef
40022
21
0x3c
0x1c
40023
22
Int-16
0x00
Instrument Units
0x00 Metric
0x01 Imperial
0x00
40024
23
Int-16
0x00
Instrument Gain
Gain in dB
0x01
40025
24
Int-16
0x00
Instrument SNR
SNR in dB
0x0a
40026
25
Int-16
0x00
Instrument Signal
Signal in %
0x62
40027
26
iee754
0x42
Measured Delta-Time Difference
Diagnostic Data
Units in nanoseconds
0xc9
40028
27
0xff
0x7d
40029
28
iee754
0x42
Instrument ETA
Diagnostic Data
Units in nanoseconds
0xa8
40030
29
0x8b
0xf5
40031
30
iee754
0x42
Instrument ATA
Diagnostic Data
Units in nanoseconds
0xc8
40032
31
0x00
0x00
n/a
n/a
Int-16
0xed
CRC-16
0x98

Micronics U1000MKII-FM User Manual
Issue 2.0 June 18 Page 20
7 Subsequent Power-ON Sequence
If the power supply is cycled OFF/ON after the unit is in the flow reading screen all subsequent
start-ups will use the same configuration as was previously entered. If the configuration needs to be
changed for any reason, the user can make use of the password-controlled menu as described in
section 8.
8 Password Controlled Menus
The password controlled menu allows the user some flexibility to change the default settings:
User Password (71360):
•Setup Menu
•Comms Menu
•Pulse Output Menu
•Calibration Menu
•Totaliser Menu
Press the key to get to the screen prompting for the password, which is entered using the
method shown in 9.1.2. To exit the password controlled menu navigate to the Exit screen and press
the key. If you wish to abandon entering the password then wait until the display returns to the
flow reading screen.
General procedure for changing menu settings.
9 General Procedure for changing menu settings
9.1.1 Selection menus
When a password controlled menu is selected the procedure for changing the default setting is the
same for all menus. For example, consider the Flow Units menu shown in Figure 12.
The default value ‘l/min’ will blink to indicate that this is the current setting. To change to ‘l/s’, press
the key. Now the ‘l/s’ units will blink to indicate that this is now the selected units. Press the
key to confirm the change.
There are other default settings where the and keys are used to scroll through the
options.


>

Figure 12 Flow Units menu
Flow Units:
l/min | l/s