Chatter™ is a trademark of MJK Automation, Denmark.
4EN 6.10 Chatter Hardware Manual 1511
Data Logger
1. Introduction
Thank you for choosing MJK Chatter™ Data Logger. We have done our best
to design and produce a quality data logger to meet your requirements.
Chatter is easy to install, calibrate and set into operation. To ensure the best
result MJK recommends that the user reads this manual to become familiar
with all features, functions and details of the Chatter data logger.
Use and treat the equipment as instructed by the manufacturer, MJK Automation A/S, to ensure reliable operation and accurate measurements.
Chatter is available in two different versions: one for pipe mounting and one
for wall mounting.
You can always get in touch with your supplier or with an MJK support hotline
for advice and guidance:
• Tlf.: +45 45 56 06 56 E-mail: mjk@mjk.com
Visit our website www.mjk.com to read more about MJK Automation, our
other products and the people behind.
MJK Automation is a Xylem brand.
1. Introduction
5
Data Logger
2. Safety and Repair
Safery Instructions
• Read this manual thoroughly
• Be aware of the environment at the installation site. Be sure to use the
necessary safety equipment and to comply with all applicable safety conditions and rules.
• WARNING: Improper or inadequate installation or use may lead to physical injury and/or damaged equipment !
Physical installation
DO NOT install the MJK Chatter data logger in areas with danger of explosion.
Repair
Repair through MJK or by MJK appointed repair firm only.
6EN 6.10 Chatter Hardware Manual 1511
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3. Specifications, Order Numbers and Accessories
Specifications
Specifications
Digital inputs4 pcs. 2 - 5 VDC (shortest interval 1x per count. 10 seconds)
Analog inputs4 pcs. 0.1 - 2.5 VDC
AccuracyBetter than ± 1%
Resolution10 bit, input impedance min. 10 Kohm
Data inputs1 pc. RS-485 Modbus input for max. 4 units.
Power supply for I/O Built-in voltage regulated for sensors and other connected devices:
Interface connectorInternal USB 1.1, type mini B, female
Antenna socketMMCX, female
Data transmission
Memory/storage30,000 measured values, time and date stamped
GSM/GPRS quad-band 850/900/1800/1900 MHz supporting TCP/IP protocol.
On-board SIM card holder, TCP/IP socket connection over GPRS and WWW
Internet
Pipe: PC-ASA (top),
aluminum (base)
Pipe: Ø190 x Ø150 mm
(inner diameter Ø63 - Ø106 mm)
Table 1. Specifications
Wall: Glass reinforced polycarbonate (PC)
Wall: 156 x 144 x 83 mm (w x h x d)
3. Specifications, Order Numbers and Accessories
7
Data Logger
Order Numbers
Order Numbers
204105Chatter
204106Chatter
204110Chatter
204111Chatter
™
GSM / GPRS for pipe mounting
™
GSM/GPRS/GPS for pipe mounting
™
GSM / GPRS for wall mounting
™
GSM/GPRS/GPS for wall mounting
Table 2. Order Numbers
Accessories
Accessories
AntennasSee data sheet GB 6.3 GSM/GPRS Antennas
205116Vandal proof, small and flat - 2 meter
205116-6MVandal proof, small and flat - 6 meter
205118Vandal proof, small and flat - 15 meter
205116-XMVandal proof, small and flat - >15 meter
205175Vandal proof, big and flat - 2 meter
205176Vandal proof, big and flat - 6 meter
205177Vandal proof, big and flat - 10 meter
205178Vandal proof, big and flat - 15 meter
205119Antenna for mast - 6 meter
205114Antenna for mast - 10 meter
205185Antenna for wall, fin - 2 meter
205186Antenna for wall, fin - 6 meter
205187Antenna for wall, fin - 10 meter
205188Antenne for wall, fin - 15 meter
TransmittersSee data sheet GB 2.76 Digital Pressure Transmitters
521751Wedge set, metal, 3 x 3 pcs., wedge sizes: 1, 2, 3 og 4
521752Wedge set, metal, 3 x 3 pcs., wedge sizes: 4, 5 og 6
521755Wedge screws, set of 3 pcs.
521756Threaded inserts for plastic wedges
521760Gasket for Chatter
521761Gasket for Chatter
521762Gasket for Chatter
550246Battery 3.6 V, 17 Ah
569108Screw, self-tapping, KB50x14
569123Screw, self-tapping, KB35x7
571055Rubber band, 60mm, compound
™
base/pipe
™
top/base
™
panel
Table 3. Accessories
8EN 6.10 Chatter Hardware Manual 1511
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4. Electrical Connections
Access the electrical connection terminals of the Chatter unit, the SIM card
and the battery as follows:
1. Open and remove the padlock that prevents unauthorized access to the
Chatter unit.
2. Turn the green top approx. 1 cm counterclockwise and lift it off.
2.
1.
Figure 1. Opening the Chatter Unit for Pipe Mounting
3. Remove the seven TORX screws at the bottom of the green top to access
to terminal blocks for digital and analog inputs, voltage outputs and serial
data communication (see figure 2 overleaf).
4. Electrical Connections
9
Data Logger
ANT.2
ANT.3
3.6 VDC battery
MJK order no. 550246
ANT.1
ON OFF
Battery
4
GND
3V6-A
+5/ 10/ 15V
SIM card
GND
3V6-B
GND
5
RS485
A
GND
B
GND
AI 3
TEST
SW
AI 4
GND
3
USB
USB
1
DI 1
DI 2
DI 3
Figure 2. Terminal Blocks for Signal Inputs, Voltage Outputs and Serial Communication
DI 4
GND
AI 1
2
AI 2
Digital Inputs (1)
Chatter has four digital inputs each with four functions during normal operation:
NC (passive) The input is normally connected to GND and will be activated, when the connection is broken.
NO (passive) The input is normally open and will be activated, when itis connected to GND.
NC (active) The input is normally connected to a voltage between 2 - 5V
and will be activated, when the connection is broken.
NO (active) The input is normally open and will be activated, when it is
connected to a voltage betweeen 2 - 5V.
Digital Inputs
TerminalDesignation/function
DI 1NC/NO, active/passive
DI 2NC/NO, active/passive
DI 3NC/NO, active/passive
DI 4NC/NO, active/passive
GNDCommon GND terminal for DI 1 - 4
Table 4. Digital Inputs
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Analog Inputs (2)
Chatter has four analog inputs each with a range of 0,1 - 2,5 VDC (see position “2” on the drawing to the left).
Analog inputs
TerminalDesignation/function
AI 10.1 - 2.5 VDC
AI 2 0.1 - 2.5 VDC
AI 30.1 - 2.5 VDC
AI 40.1 - 2.5 VDC
GNDCommon GND terminal for AI 1 - 4
Table 5. Analog Inputs
USB Connector (3)
Chatter is equipped with a USB socket for communication with for example a
laptop computer for configuration.
Voltage Outputs (4)
Chatter has three voltage outputs for MJK-approved equipment: one from
the factory programmable 5/10/15 VDC supply and two separate 3.6 VDC
outputs.
Voltage Outputs
TerminalDesignation/function
+5/ 10/ 15 VDCProgrammable, ON/OFF-controlled voltage supply (+5 VDC from factory)
GNDGround
3V6-A3.6 volt (always ON)
GNDGround
3V6-B3.6 volt (ON/OFF-controlled by the electronics during measurement)
GNDGround
Table 6. Voltage Outputs for MJK-approved Equipment
The outputs ”5/10/15” and ”3V6-B” are controlled in such a way that they are
activated during measurement. ”3V6-A” is connected directly to the battery
and is as such always active.
4. Electrical Connections
11
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Serial Data Communication for Modbus (5)
Chatter is equipped with RS-485 serial data communications. See position
“5” in Figure 2.
RS-485 Serial Data Communication for Modbus
TerminalDesignation/function
A (RS485)Signal A
B (RS485)Signal B
GND (RS485)Ground
GNDGround
Table 7. RS-485 Serial Data Communication
Other Main Components on the Circuit Board
Battery (6)
The battery is located on top of the Chatter PCB (see Figure 3). Connection is through a connector placed in the middle of the circuit board (“Battery”, red and black wires).
Please note that the battery can be replaced without first setting the Chatter unit in ”OFF” position.
See section 6. Gain Access to SIM Card and Battery and section 7.
Internal Installation in the Chatter Unit for gaining access to and chang-
ing the battery.
Jumper (7)
A jumper is placed right below the battery with two positions: ON and
OFF. In ON position the Chatter incl. pressure transmitter is powered (activated), and in OFF position it is disconnected (switched off).
Booster Capacitor (8)
The booster capacitor delivers current during data transmissions.
SIM Card (9)
The SIM card facilitate communication via the GSM/GPRS network.
See also the procedure for inserting/changing the SIM card in section
7. Internal Installation in the Chatter Unit on page 25.
12EN 6.10 Chatter Hardware Manual 1511
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Antenna Connector ANT.1 (10)
Connector no. 1 is designated for a standard GSM/GPRS antenna.
Antenna Connector ANT.2 (11)
Connector no. 2 is designated for an alternative GSM/GPRS antenna with
an alternative modem installation.
10
ANT.1
ANT.2
11
6
7
ON OFF
8
Battery
USB
USB
AI 1
DI 1
DI 4
DI 2
DI 3
GND
Figure 3. Other Main Components on the Circuit Board
AI 2
AI 3
TEST
SW
AI 4
GND
13
+5/ 10/ 15V
GND
SIM card
GND
3V6-A
ANT.3
3V6-B
12
RS485
GND
A
9
GND
B
GND
Antenna Connector ANT.3 (12)
Antenna connector no. 3 is designated for a GPS antenna in units with a
GPS module mounted.
TEST SW (13)
The Test switch may be used by service personnel to ”wake” the Chatter.
4. Electrical Connections
13
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14EN 6.10 Chatter Hardware Manual 1511
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5. Mounting
MJK Chatter data logger is supplied in two different mounting versions: one
for pipe mounting and one for wall mounting (mounting on wall or cabinet).
5.1 Pipe Mounting
Necessary tools and parts:
• Wedge set to fit pipe diameter
• Socket spanner, 7 mm
1. Activate the Chatter unit(s) as described in section 9. Physical Activation
on page 31.
2. Re-assemble the Chatter unit(s) as described in section
6.2 Wall Mounting on page 23.
3. Prepare the Chatter base with wedges to fit the pipe diameter:
WedgeFrom inner diameter ----> to inner diameter
Wedge 1Ø63 mmØ71 mm
Wedge 2Ø70 mmØ78 mm
Wedge 3Ø77 mmØ85 mm
Wedge 4Ø84 mmØ92 mm
Wedge 5Ø91 mmØ99 mm
Wedge 6Ø98 mmØ106 mm
Table 8. Wedge Sizes
5. Mounting
15
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4. Secure stud bolts and wedges with a rubber band as shown below.
3.
4.
Figure 4. Secure Stud Bolts and Wedges with a Rubber Band
5. Immerse the Chatter base in the pipe (if possible with the padlock pointing away from public view), and then pull the screws up until the wedges
buckle in the pipe. Thereby the base is centered in the pipe, and the
wedges will automatically level.
5.
Figure 5. Center the Base
6. Screw the screws into the base, one by one without using any tool:
6.
Figure 6. Screw by Hand
16EN 6.10 Chatter Hardware Manual 1511
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7. Tighten the screws with a 7 mm spanner until the base is bolted onto the
pipe:
7.
Figure 7. Tighten the Screws with a Spanner
From here on the base may not be moved, rotated or lifted!
8. Fasten the security wire of the pressure transmitter into the base before
the pressure transmitter is placed inside the pipe.
IMPORTANT: Use a large washer between the wire and the screw, so
that the wire can not escape the base!
5. Mounting
8.
Figure 8. Fasten the Security Wire
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9. Remove the protective sleeving from the pressure transmitter and immerse
the pressure transmitter in the pipe.
9.
Figure 9. Immerse the Pressure Transmitter
10. Connect the pressure transmitter cable to the green Chatter top.
IMPORTANT: The guide pins must align to ensure correct
connection.
10.
Figure 10. Connect the Pressure Transmitter Cable
18EN 6.10 Chatter Hardware Manual 1511
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11. Mount the Chatter top on the base by turning the top approx. 1 cm
counter-clockwise, until the holes for the security padlock align.
Expect a slight drag over the last few millimeters. This is due to the activation of the intruder alarm (a magnetic switch between top and base).
12. Mount the padlock (see figure below).
12.
Figure 11. Mount the Padlock
13. Make sure that the green Chatter top is mounted and secured correctly:
Right WRONG!
5. Mounting
Figure 12. Top Mounted and Secured Right and Wrong
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5.2 Wall Mounting
1. Mount the cabinet on the wall.
2. Connect the pressure transmitter(s) according to the example in section
8.1 MJK Chatter and MJK Expert Transmitter on page 29.
3. Connect the relevant in- and outputs.
4. Aktivate the Chatter unit(s) as described in section 9. Physical Activation
on page 31.
5. Close the Chatter unit(s) as described in section 6.2 Wall Mounting on
page 23.
20EN 6.10 Chatter Hardware Manual 1511
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6. Gain Access to SIM Card and Battery
To change SIM card or battery in a Chatter unit, you must gain access to the
unit’s circuit board.
6.1 Pipe Mounting
1. Open and remove the padlock that prevents unauthorized access to the
Chatter unit.
2. Turn the green top approx. 1 cm counterclockwise (but do not lift it off!)
3. Leave the top on for about two minutes and then lift it off.
This is to ensure a valid measurement and to allow time for sending an
alarm to the server.
4. Remove the pressure transmitter connector by turning the union counterclockwise.
5. Dismount the cover plate by removing the seven screws that secures it:
Figure 13. Pipe Mounted Chatter Unit
6. Insert SIM card or change battery as described in section 7. Internal
Installation in the Chatter Unit on page 25.
7. Re-assemble the Chatter unit.
IMPORTANT: Make sure that the leads do not get stuck or become
squeezed between the top, the rubber gasket and the cover plate.
8. Tighten the screws and make sure that the cover plate fits closely to the
rubbber gasket.
6. Gain Access to SIM Card and Battery
21
Data Logger
9. Re-connect the pressure transmitter connector by turning the union clockwise.
10. Immerse the pressure transmitter into the pipe, and make sure that the
cable and the security wire hang freely inside the pipe to ensure reliable
measurements.
11. Mount the Chatter top at the base by turning the top approx. 1 cm
counter-clockwise, until the holes for the security padlock align.
Expect a slight drag over the last few millimeters. This is due to the activation of the intruder alarm (a magnetic switch between top and base).
Right WRONG!
Figure 14. Chatter Top Mounted Right and Wrong
12. Re-mount the padlock.
22EN 6.10 Chatter Hardware Manual 1511
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6.2 Wall Mounting
1. Locate the Chatter unit:
Figure 15. Wall Mounted Chatter in Custom-designed Cabinet
2. Loosen the four screws in the top cover to open the Chatter unit:
Figure 16. Access to SIM Card - Wall Mounting
3. Insert SIM card or change battery as described in section 7. Internal
Installation in the Chatter Unit on page 25.
4. Re-assemble the Chatter unit.
IMPORTANT: Make sure that the leads do not get stuck or become
squeezed between the cabinet and the cover.
5. Tighten the four screws in the cover.
6. Re-mount the Chatter unit in its original location.
6. Gain Access to SIM Card and Battery
23
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24EN 6.10 Chatter Hardware Manual 1511
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7. Internal Installation in the Chatter Unit
7.1 Inserting a SIM Card
1. Open the Chatter unit to gain accesss to the circuit board and the SIM
card holder as described in section 6. Gain Access to SIM Card and
Battery on page 21.
2. Open the SIM card holder by applying light pressure on the upper part (the
lid) and at the same time dragging it towards the edge of the circuit board
(here: to the right as indicated by the arrow):
Figure 17. SIM Card Holder - Empty and Locked
The lid opens to an angle of approx. 45 degrees and allows easy access
for SIM card insertion:
Figure 18. SIM Card Holder - Empty and Open
Ensure the SIM card is cleansed from eventual fingerprints, or any dirt or
grease, as even the smallest amounts can influence the functionality of the
SIM card.
Note: Corrosion and verdigris can occure, due to the environment where
Chatter is installed, this can cause fall-out of communication. in case
of this, try and clean the contacts and card, then re-inster the card and
re-try communication.
7. Internal Installation in the Chatter Unit
25
Data Logger
3. Carefully insert the SIM card into the grooves that hold the card, and finally
push it to the end stop.
IMPORTANT: The SIM card must align with the grooves all the way
down. Likewise the SIM card’s right, cut-off corner must point upwards and to the left (see arrow):
Figure 19. SIM Card Correctly Inserted into the Grooves
4. Secure the SIM card in the holder by applying light pressure on the upper
part (the lid) and at the same time dragging it towards the middle of the
circuit board (here: to the left as indicated by the arrow).
Figure 20. SIM Card Secured in the Card Holder
5. If there is a PIN code on the SIM card, the code must be added to the
Chatter configuration during setup.
This can be achieved with the MJK utilities for local configuration: ”Chatter
Setup Tool”.
6. You can also use ”Chatter Setup Tool” to change to another APN, or to
change other parameters related to the call settings.
7. Re-assemble and lock the Chatter unit as described in section 6. Gain
Access to SIM Card and Battery on page 21.
26EN 6.10 Chatter Hardware Manual 1511
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7.2 Battery Change
1. Open the Chatter unit to gain accesss to the circuit board and the battery as described in section 6. Gain Access to SIM Card and Battery on
page 21.
2. Carefully push the battery sidewards to free it from the cable strap that
holds the battery.
Alternatively you can cut the cable strap (this requires, however, that you
use a new strap for the new battery).
3. Disconnect the battery leads (red and black) from the Chatter circuit board
by pulling out the “Batt” plug.
4. Connect the new battery’s leads to the “Batt” connector.
5. Push the new battery into the old cable strap (or, if cut, secure the new
battery with a new cable strap).
6. Re-assemble og lock the Chatter unit as described in section 6. Gain Ac-
cess to SIM Card and Battery on page 21.
7. Internal Installation in the Chatter Unit
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28EN 6.10 Chatter Hardware Manual 1511
MJK Expert™ 7060 og 7070 hydrostatiske digital/analog niveau tryktransmittere er præcisions-transmittere med indbygget Modbus protokol for udlæsning af målinger og fjernkalibrering under drift, og de erudviklet til installationer med krav om lavt energiforbrug og sammenkobling med MJK Chatter Datalogger.
MJK Expert™ 7060 Niveau Transmitter er en robust all-round transmitter ideel til niveaumåling i opbe-varingstanke, vådkilder og pumpestationer i både drikkevand- og
spildevandsanlæg.
MJK Expert™ 7070 Niveau Transmitter har de samme specifikationer som 7060-transmitteren, men har derudover en meget lille ydre diameter og er fremstillet i 316L syrefast, rustfrit stål. Transmit-teren er specielt udviklet til niveaumålinger i boringer, brønde og drikkevandsbeholdere.
Transmitterne leveres med piezo-resistivt målesy-stem og hhv. direkte lufttrykskompensation (relativ) via et integreret ventilationsrør i kablet og indbygget temperatur kompensat
ion samt som ABS (absolute)
og SG (sealed gauge) versioner.
2.76
Data Logger
8. Connection Examples
8.1 MJK Chatter and MJK Expert Transmitter
MJK Chatter Data Logger
ANT.2
ANT.3
Connecto r to MJK Expert Transmitter
B A H
C J K G
D E F
ANT.1
ON OFF
Battery
SIM card
USBUSB
AI 1
AI 4
AI 3
AI 2
DI 4
DI 1
DI 2
DI 3
GND
GND
+5/ 10/ 15V
GND
3V6-A
GND
RS485
GND
GND
B
A
3V6-B
GND
Color Pin Signal
Yellow D RS 485 B
Grey E RS 485 A
Brown K GND (ground)
White B n /c (signal 0,1-2,5 / 0,3-3,0 V DC)
Red G +5/10/15V (3,5 -12 V DC)
Black F n/c (shield)
Figure 21. Connection Example 1 - MJK Expert Transmitter
IMPORTANT: If several pressure transmitters are to be installed, they
must:
1) be ordered with customized factory setup for the
specific purpose
2) be connected in parallel
8. Connection Examples
29
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8.2 MJK Chatter and Digital Input
ANT.1
DI 1
DI 2
DI 3
DI 4
GND
AI 1
AI 2
AI 3
ANT.2
AI 4
USBUSB
GND
2-5 VDC
ON OFF
Battery
GND
+5/ 10/ 15V
SIM card
GND
3V6-A
ANT.3
3V6-B
GND
RS485
A
GND
B
GND
Figure 22. Connection Example 2 - Digital Input
In this example DI1 and DI2 are connected ”passive”, and DI4 is connected
”active”.
30EN 6.10 Chatter Hardware Manual 1511
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9. Physical Activation
The Chatter unit is activated physically by moving the jumper shown on page
12 and in the figures below from position ”OFF” to position ”ON”.
Figure 23. On-Off Jumper from ”OFF” to ”ON” position
9. Physical Activation
31
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32EN 6.10 Chatter Hardware Manual 1511
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10. Mechanic Dimensions
Chatter Unit for Pipe Mounting
190 mm
190
150 mm
150
101 mm
101
Indre rørdiameter
Inner pi pe diamete r
Ø 63 - 106 mm
Ø63 - Ø106
Figure 24. Mechanic Dimensions - Pipe Mounted
Chatter Unit for Wall Mounting
156
144
Figure 25. Mechanic Dimensions - Wall Mounted
10. Mechanic Dimensions
33
83
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34EN 6.10 Chatter Hardware Manual 1511
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11. Maintenance
The MJK Chatter Data Logger requires no maintenance.
Service Agreement
A service agreement guaranties the equipment’s long term reliability and
accuracy. Contact one of MJK’s national sales- or service representatives to
make a service agreement with regular service visits.
11. Maintenance
35
Cut-out area
Frontpanel outline
Up
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36EN 6.10 Chatter Hardware Manual 1511
Frontpanel outline
Data Logger
Appendix A. Frontpanel Cut-Out Template
The dotted lines indicate the front panel contour and measures 155 x 145 mm.
Up
Appendix A. Frontpanel Cut-Out Template
Cut-out area
37
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38EN 6.10 Chatter Hardware Manual 1511
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Appendix B. Calculation of Battery Lifetime
The battery in the MJK Chatter unit is of the lithium-trionyl-ion-trotyl type
which is characterized by a high energy density, a low self-discharge, and
a long lifetime. The energy density is 17 Ah nominal and guarantied 15 Ah
(15.000 mAh). Depending on the use of the Chatter unit you can estimate the
battery lifetime.
The Chatter will, depending on the setup, execute one control call every 25th.
hour (if a shorter interval has not been selected). This ensures that you can
always make changes to the setup efter 25 hours. MJK recommends that
you perform a call every 24 hours (once a day) or more frequent.
The lifetime calculation is simple for usages with a fixed log interval, whereas
usages with event log require a time estimation for the event logs.
Calculation Template
Chatter basic consumption per day (fixed) = 1.0
No. of logs per day @sensor consump.=2mA ? x 0.1 = No. of logs per day @sensor consump. =4mA ? x 0.2 = No. of event logs per day @sensor consump.=2mA ? x 0.1 = No. of event logs per day @sensor consump. =4mA ? x 0.2 = No. of calls per day ? x 3 = No. of alarm calls per day ? x 3 = Consumption per day (total): -
Battery lifetime in days: 15000/consump. per day [day] = Battery lifetime in months: Battery lifetime [days]/30 [months] = Battery lifetime in years: Battery lifetime [months]/12 [years] = =====
Appendix B. Calculation of Battery Lifetime
39
Data Logger
Calculation Example 1
Chatter basic consumption per day (fixed) = 1.0
No. of logs per day @sensor consump.=2mA 1 x 0.1 = 0.1
No. of logs per day @sensor consump. =4mA - x 0.2 = No. of event logs per day @sensor consump.=2mA - x 0.1 = No. of event logs per day @sensor consump. =4mA - x 0.2 = No. of calls per day 1 x 3 = 3.0
No. of alarm calls per day 0.01 x 3 = 0.03
Consumption per day (total): 4.13
Battery lifetime in days: 15000/consump. per day [day] = 3632.1
Battery lifetime in months: Battery lifetime [days]/30 [months] = 121.1
Battery lifetime in years: Battery lifetime [months]/12 [years] = 10.0 yrs
=======
Calculation Example 2
Chatter basic consumption per day (fixed) = 1.0
No. of logs per day @sensor consump.=2mA 24 x 0.1 = 2.4
No. of logs per day @sensor consump. =4mA - x 0.2 = No. of event logs per day @sensor consump.=2mA 60 x 0.1 = 6.0
No. of event logs per day @sensor consump. =4mA - x 0.2 = No. of calls per day - x 3 = No. of alarm calls per day - x 3 = Consumption per day (total): 9.4
Battery lifetime in days: 15000/consump. per day [day] = 1595.7
Battery lifetime in months: Battery lifetime [days]/30 [months] = 53.2
Battery lifetime in years: Battery lifetime [months]/12 [years] = 4.4 yrs
=======
40EN 6.10 Chatter Hardware Manual 1511
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Calculation Example 3
Chatter basic consumption per day (fixed) = 1.0
No. of logs per day @sensor consump.=2mA 24 x 0.1 = 2.4
No. of logs per day @sensor consump. =4mA - x 0.2 = No. of event logs per day @sensor consump.=2mA 180 x 0.1 = 18.0
No. of event logs per day @sensor consump. =4mA - x 0.2 = No. of calls per day 2 x 3 = 6.0
No. of alarm calls per day - x 3 = Consumption per day (total): 27.4
Battery lifetime in days: 15000/consump. per day [day] = 547.0
Battery lifetime in months: Battery lifetime [days]/30 [months] = 18.2
Battery lifetime in years: Battery lifetime [months]/12 [years] = 1.5 yrs
=======
Appendix B. Calculation of Battery Lifetime
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42EN 6.10 Chatter Hardware Manual 1511
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Appendix C. Calculation of WLD- and Ref. Datum
The following examples illustrate how you can calculate the water level datum
(WLD) in relation to the cable length and the reference datum of a bore.
Example: A bore has the following characteristics:
• Reference datum: 34.76 m (the level at which the Chatter
base rests on the pipe/bore head)
• Cable length: 25.0 m
• Sensor depth: 24.9 m (cable length - 10 cm)
• Measurement from DB: 7.65 m
Connector=10cm
Reference
datum
Figure 26. Lengths and Datum
Appendix C. Calculation of WLD- and Ref. Datum
Water
level
datum
43
Sensor
depth
Cable length
on label
Data Logger
The water level datum (WLD) in this example: 34.76 - 24.9 + 7.65 => 17.51 m
The following figures/numbers for the bore are required as entries to the data
base to achieve a valid calculation of the water level datum.
Sensor depth from top of bore
1. Sensor depth from the top of the bore = total cable length – 10cm.
2. “Total cable length” is printed on a label near the cable connector
(example: cable length = 11.86 m).
3. To get the sensor depth in relation to the top of the bore, you must subtract 10 cm due to the cable connector length (11.86 - 0.1 = 11.76 m).
4. This is also the sensor depth that you use in calculations and write into the
Chatter database (written to the server from the Chatter Link ”Modbus”
tab in the field ”Sensor depth”).
44EN 6.10 Chatter Hardware Manual 1511
Data Logger
List of Figures
Figure 1. Opening the Chatter Unit for Pipe Mounting 9
Figure 2. Terminal Blocks for Signal Inputs, Voltage Outputs and Serial Communication 10
Figure 3. Other Main Components on the Circuit Board 13
Figure 4. Secure Stud Bolts and Wedges with a Rubber Band 16
Figure 5. Center the Base 16
Figure 6. Screw by Hand 16
Figure 7. Tighten the Screws with a Spanner 17
Figure 8. Fasten the Security Wire 17
Figure 9. Immerse the Pressure Transmitter 18
Figure 10. Connect the Pressure Transmitter Cable 18
Figure 11. Mount the Padlock 19
Figure 12. Top Mounted and Secured Right and Wrong 19
Figure 13. Pipe Mounted Chatter Unit 21
Figure 14. Chatter Top Mounted Right and Wrong 22
Figure 15. Wall Mounted Chatter in Custom-designed Cabinet 23
Figure 16. Access to SIM Card - Wall Mounting 23
Figure 17. SIM Card Holder - Empty and Locked 25
Figure 18. SIM Card Holder - Empty and Open 25
Figure 19. SIM Card Correctly Inserted into the Grooves 26
Figure 20. SIM Card Secured in the Card Holder 26
Figure 21. Connection Example 1 - MJK Expert Transmitter 29
Figure 22. Connection Example 2 - Digital Input 30
Figure 23. On-Off Jumper from ”OFF” to ”ON” position 31
Figure 24. Mechanic Dimensions - Pipe Mounted 33
Figure 25. Mechanic Dimensions - Wall Mounted 33
Figure 26. Lengths and Datum 43
List of Tables
Table 1. Specifications 7
Table 2. Order Numbers 8
Table 3. Accessories 8
Table 4. Digital Inputs 10
Table 5. Analog Inputs 11
Table 6. Voltage Outputs for MJK-approved Equipment 11
Table 7. RS-485 Serial Data Communication 12
Table 8. Wedge Sizes 15
MJK Automation are liable to the common rules of Danish
law on product liability, however, the liability is reduced to
coverage of our public liability insurance of products. To
the extent where nothing else follows in lines of invariable
rules of law, we are not liable for loss of profits and working
deficits or other indirect losses.
Changes
As our products are developed continuously, we reserve
the right to make any alterations without prior notice.
EN 6.10 Chatter Hardware Manual 1511
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