BK Precision DAS240-BAT, DAS220-BAT User Manual
Safety Summary
The following safety precautions apply to both operating and maintenance personnel and must be followed during all
phases of operation, service, and repair of this instrument.
Before applying power to this instrument:
• Read and understand the safety and operational information in this manual.
• Apply all the listed safety precautions.
• Verify that the voltage selector at the line power cord input is set to the correct line voltage. Operating the instrument
at an incorrect line voltage will void the warranty.
• Make all connections to the instrument before applying power.
• Do not operate the instrument in ways not specied by this manual or by B&K Precision.
Failure to comply with these precautions or with warnings elsewhere in this manual violates the safety standards of design,
manufacture, and intended use of the instrument. B&K Precision assumes no liability for a customer’s failure to comply
with these requirements.
Category rating
The IEC 61010 standard denes safety category ratings that specify the amount of electrical energy available and the
voltage impulses that may occur on electrical conductors associated with these category ratings. The category rating is
a Roman numeral of I, II, III, or IV. This rating is also accompanied by a maximum voltage of the circuit to be tested,
which denes the voltage impulses expected and required insulation clearances. These categories are:
Category I (CAT I): Measurement instruments whose measurement inputs are not intended to be connected
to the mains supply. The voltages in the environment are typically derived from a limitedenergy transformer or a battery.
Category II (CAT II): Measurement instruments whose measurement inputs are meant to be connected to
the mains supply at a standard wall outlet or similar sources. Example measurement
environments are portable tools and household appliances.
Category III (CAT III): Measurement instruments whose measurement inputs are meant to be connected to
the mains installation of a building. Examples are measurements inside a building’s circuit breaker panel or the wiring of permanently-installed motors.
Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be connected to
the primary power entering a building or other outdoor wiring.
Do not use this instrument in an electrical environment with a higher category rating than what is specied in this manual
for this instrument.
You must ensure that each accessory you use with this instrument has a category rating equal to or higher than the
instrument’s category rating to maintain the instrument’s category rating. Failure to do so will lower the category rating
of the measuring system.
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Electrical Power
This instrument is intended to be powered from a CATEGORY II mains power environment. The mains power should be
115 V RMS or 230 V RMS. Use only the power cord supplied with the instrument and ensure it is appropriate for your
country of use.
Ground the Instrument
To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical safety ground. This
instrument is grounded through the ground conductor of the supplied, three-conductor AC line power cable. The power
cable must be plugged into an approved three-conductor electrical outlet. The power jack and mating plug of the power
cable meet IEC safety standards.
Do not alter or defeat the ground connection. Without the safety ground connection, all accessible conductive parts
(including control knobs) may provide an electric shock. Failure to use a properly-grounded approved outlet and the
recommended three-conductor AC line power cable may result in injury or death.
Unless otherwise stated, a ground connection on the instrument’s front or rear panel is for a reference of potential only
and is not to be used as a safety ground. Do not operate in an explosive or ammable atmosphere.
Do not operate the instrument in the presence of ammable gases or vapors, fumes, or nely-divided particulates.
The instrument is designed to be used in oce-type indoor environments. Do not operate the instrument
• In the presence of noxious, corrosive, or ammable fumes, gases, vapors, chemicals, or nely-divided particulates.
• In relative humidity conditions outside the instrument’s specications.
• In environments where there is a danger of any liquid being spilled on the instrument or where any liquid can condense
on the instrument.
• In air temperatures exceeding the specied operating temperatures.
• In atmospheric pressures outside the specied altitude limits or where the surrounding gas is not air.
• In environments with restricted cooling air ow, even if the air temperatures are within specications.
• In direct sunlight.
This instrument is intended to be used in an indoor pollution degree 2 environment. The operating temperature range is
0∘C to 40∘C and 20% to 80% relative humidity, with no condensation allowed. Measurements made by this instrument
may be outside specications if the instrument is used in non-oce-type environments. Such environments may include
rapid temperature or humidity changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical noise,
strong electric elds, or strong magnetic elds.
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Do not operate instrument if damaged
If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on or inside the
instrument, remove the instrument’s power cord, remove the instrument from service, label it as not to be operated,
and return the instrument to B&K Precision for repair. Notify B&K Precision of the nature of any contamination of the
instrument.
Clean the instrument only as instructed
Do not clean the instrument, its switches, or its terminals with contact cleaners, abrasives, lubricants, solvents, acids/bases,
or other such chemicals. Clean the instrument only with a clean dry lint-free cloth or as instructed in this manual. Not
for critical applications
This instrument is not authorized for use in contact with the human body or for use as a component in a life-support
device or system.
Do not touch live circuits
Instrument covers must not be removed by operating personnel. Component replacement and internal adjustments must
be made by qualied service-trained maintenance personnel who are aware of the hazards involved when the instrument’s
covers and shields are removed. Under certain conditions, even with the power cord removed, dangerous voltages may
exist when the covers are removed. To avoid injuries, always disconnect the power cord from the instrument, disconnect
all other connections (for example, test leads, computer interface cables, etc.), discharge all circuits, and verify there
are no hazardous voltages present on any conductors by measurements with a properly-operating voltage-sensing device
before touching any internal parts. Verify the voltage-sensing device is working properly before and after making the
measurements by testing with known-operating voltage sources and test for both DC and AC voltages. Do not attempt
any service or adjustment unless another person capable of rendering rst aid and resuscitation is present.
Do not insert any object into an instrument’s ventilation openings or other openings.
Hazardous voltages may be present in unexpected locations in circuitry being tested when a fault condition in the circuit
exists.
Fuse replacement must be done by qualied service-trained maintenance personnel who are aware of the instrument’s fuse
requirements and safe replacement procedures. Disconnect the instrument from the power line before replacing fuses.
Replace fuses only with new fuses of the fuse types, voltage ratings, and current ratings specied in this manual or on
the back of the instrument. Failure to do so may damage the instrument, lead to a safety hazard, or cause a re. Failure
to use the specied fuses will void the warranty.
Servicing
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Do not substitute parts that are not approved by B&K Precision or modify this instrument. Return the instrument to
B&K Precision for service and repair to ensure that safety and performance features are maintained.
For continued safe use of the instrument
• Do not place heavy objects on the instrument.
• Do not obstruct cooling air ow to the instrument.
• Do not place a hot soldering iron on the instrument.
• Do not pull the instrument with the power cord, connected probe, or connected test lead.
• Do not move the instrument when a probe is connected to a circuit being tested.
Safety Symbols
Symbol Description
indicates a hazardous situation which, if not avoided, will result in death or serious injury.
indicates a hazardous situation which, if not avoided, could result in death or serious injury
indicates a hazardous situation which, if not avoided, will result in minor or moderate injury
Refer to the text near the symbol.
Electric Shock hazard
Alternating current (AC)
Chassis ground
Earth ground
This is the In position of the power switch when instrument is ON.
This is the Out position of the power switch when instrument is OFF.
is used to address practices not related to physical injury.
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Contents
1 Introduction 6
1.1 Electrical Connections 6
1.2 DAS240-BAT Extension Module 6
1.3 Home screen 8
1.4 Recording Period 8
1.4.1 Example: Recording 9 Channels 9
1.4.2 Example: Power-Line, engine noise, or other electrical noise. 9
2 Setup 10
2.1 Switching On 10
2.1.1 Switching Off 10
2.1.2 In Case of Error 11
2.2 Extension Modules (DAS240-BAT only) 11
2.3 External Power 12
2.4 Battery 12
2.4.1 To Ensure Long Battery Life 12
2.4.2 To Charge the Battery 13
2.5 Calibration 13
2.5.1 Factory Default Calibration 13
2.6 Keypad Lock 14
2.7 System Setup 14
2.8 Language 14
2.9 Screen Shut Off (Dimming) 15
2.10 VNC 15
2.11 Additional Options 15
2.12 Firmware Update 15
2.13 Instrument Conguration Loading and Saving 15
2.14 Network 15
2.15 Alarms 16
3 Channel Setup 17
3.1 All Channels Screen 17
3.2 Individual Channel Screen 17
3.3 Extension Modules (DAS240-BAT only) 17
3.4 Measurement Connections 18
3.4.1 Voltage Measurement 18
3.4.2 Temperature Measurement With a Thermocouple 19
3.4.3 Temperature Measurement With Pt100/Pt1000 and RTD 19
3.4.4 Resistance Measurement 19
3.4.5 Current Measurement 20
4 F(t) Plot 22
4.1 Screen Setup 22
4.1.1 Custom Pages 23
4.2 Freeze Screen and Cursor Measurements 23
4.3 Time Base 24
4.4 Math 24
4.4.1 Math Functions 25
5 XY Plot 28
6 Numeric Display 30
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7 Recording 31
7.1 Create a Recording 31
7.2 View Recording 31
7.2.1 Loading a Recording 31
8 Triggering Recordings 34
8.1 Waiting Start Condition 34
8.2 Recordings 34
8.3 Triggering 35
8.3.1 Single Analog Channel Trigger 35
8.3.2 Single Threshold 36
8.3.3 Multiple Thresholds 37
8.3.4 Trigger Examples 38
8.4 Trigger on Logic Channels 38
9 Alarms 39
9.1 Alarm Status 39
9.2 Analog/Math/Timing Signal Alarm 40
9.3 Analog Signal Combination Alarm 40
9.4 Logic (Digital) Signal Alarm Trigger 41
9.5 Alarm on Recording Start (Trigger Acquisition) 42
10 Logic Channels 43
10.1 Logic Input Connector 43
10.2 Logic Channel Setup 43
10.3 Timing 44
10.4 Alarm Outputs 44
11 File Management 46
11.1 Note: 46
11.1 Setup Files 46
11.1.1 Default 47
11.1.2 Save Setup Files 47
11.1.3 Load Setup Files 47
11.2 Recordings Files 47
12 Remote Interfaces 48
12.1 LAN Interface 48
12.1.1 LAN Setup 48
12.2 VNC 48
12.2.1 Changing the Password 48
12.3 Network File Transfer 48
12.4 Viewing with SeframViewer 49
12.4.1 Example 50
12.5 Device Control with DASLab 50
12.6 Modbus (slave) 51
12.6.1 Setup Modbus Slave 51
12.6.2 Mapping Modbus TCP 52
12.6.2.1 Analog Data 52
12.6.2.2 Logical Data 52
13 Maintenance 53
13.1 Updating the Internal Software 53
14 Specications 54
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15 Thermocouple Measurement Accuracy 55
15.1 J Type Thermocouple Example 55
15.2 Measurement Accuracy: Pm 55
15.3 Voltage of Thermocouple (mV) 55
15.3.1 Example of Accuracy Calculation 56
15.4 Accuracy Class - Class Index 56
15.5 Grounding 57
16 LIMITED TWO-YEAR WARRANTY 58
17 Service Information 59
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Introduction
DAS240-BAT DAS220-BAT
Figure 1.1 Front View
The DAS240-BAT and DAS220-BAT programmable recorders can measure measure voltage, current, temperature (thermocouple, Pt100, Pt1000), resistances, and logic channels. Highlights include:
• An intuitive interface on a wide capacitive and color 10” touchscreen
• 32GB internal memory for storing recordings
• Composed of a main base frame and extension modules of 20 channels each
• Programmable via Ethernet using NTP, FTP and VNC protocols
• Built-in battery with capacity to run the recorder for hours
Model Channels
DAS240-BAT 20-200 using expansion blocks
DAS220-BAT 10
Table 1.1 Channel Options
1.1 Electrical Connections
Connection to the recorders uses modular connectors shown in Figure 1.2 and Figure 1.3.
1.2 DAS240-BAT Extension Module
Signals are connected to the unit via terminal blocks, see Figure 1.4. These blocks accommodate 20 connections each
and may be chained together to provide more channels.
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Item Description
1 Power Connector
2 Charging LED
3 ON/OFF Switch
4 USB Connectors
5 LAN Interface
6 Logic and Alarm Signals
7 Ground
8 Expansion Module
Figure 1.2 DAS240-BAT Electrical Connections
Item Description
1 Channel Inputs
2 Power Connector
3 Charging LED
4 ON/OFF Switch
5 USB Connectors
6 LAN Interface
7 Logic and Alarm Signals
8 Ground
Figure 1.3 DAS220-BAT Electrical Connections
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Figure 1.4 Terminal Block and Cable
1.3 Home screen
The home screen provides access to the various functions and settings of the unit. Access this menu via the “Home”
button in the top right corner of the screen.
Item Description
1 Setup Menu
2 Trigger Menu
3 Logic Channel Cong Menu
4 XY Display
5 F(t) Display
6 Numeric Display
7 Channel Setup Menu
8 Channel and Function Display Cong
9 Recording Display
10 Recording Replay Screen
11 Channel Conguration Screen
Figure 1.5 Home Screen
1.4 Recording Period
The acquisition sample rate is congurable. The unit samples one channel at a time. The sample period denes the time
a sample consumes.
Note: Each channel is sampled in sequence. The effect is that the rate at which a channel is sampled depends on
the number of channels and the sample period of each channel. See Section 1.4.1
The sample period is set to one of the following settings: 1, 2, 5, 10, 20, 50 and 100ms. When 3-wire thermocouple
measurements (Pt100 and Pt1000) are made, the time periods are doubled. The doubled time periods are highlighted
in the channel setup dialog with a “(x2)” beside the period. Also, by using a congurable low-pass lter per channel,
measurements can be made ltering out higher frequency components.
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1.4.1 Example: Recording 9 Channels
For example, if 9 channels are sampled, and the settings for each channel sample period are [50, 50, 20, 20, 20, 20,
10, 10, 5] ms each, the total time for an acquisition is 200 ms. Consequently, the minimum recording period, the time
between samples of an individual channel, is 200 ms. See Figure 1.6.
50ms
Start
CH1
50ms
CH2
Total Time = 200 ms
Figure 1.6 9ch Ex.
20ms
CH3
20ms
CH4
20ms
CH5
20ms
Ch6
1.4.2 Example: Power-Line, engine noise, or other electrical noise.
For white noise or noise with lower frequency (lower than recording frequency), you can choose a software lter.
10ms
CH7
5ms
10ms
CH8
CH9
End
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Setup
2.1 Switching On
Prior to powering ON the unit, connect the extension modules1(DAS240-BAT).
Turn on the recorder by pressing the button at the top. When the recorder is on, the ON/OFF button will illuminate,
and displays a startup screen showing the hardware version. It then switches automatically to “F(t)” mode. This display
is accessible from the “Home” menu, Figure 2.1, by pressing the “F(t)” key.
Figure 2.1 Home Screen
On power-up, the unit recalls the last settings and congurations used.
2.1.1 Switching Off
To switch off the recorder, press the ON/OFF button. A dialog box appears prompting the user to conrm powering
off the unit. Select the green check mark to proceed. The dialog disappears if either the red “X” is pressed or the 10 s
countdown expires. Before the unit turns off, the setup will be saved and the current le will be closed.
Figure 2.2 On Off Dialog
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If there are no modules connected or detected, the will display “Error:Ti” in the lower right-hand corner of the startup screen
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If the recorder does not switch off correctly, then press the ON/OFF button for 5 seconds. Congurations and setup
values may not be saved in this case. This is also true if the unit loses power.
2.1.2 In Case of Error
• If the unit still starts normally: reinitialize to default settings. From the main menu open the “Setup” menu, then
click on “Default setup” key. See Section 2.7.
• Alternatively, the unit can be reset to factory defaults.
− With the unit power off, press the power button to turn the unit on.
− While the unit is booting up, quickly and repeatedly press power button until the display shows a white startup
screen. A setup_error.cnf le will be created in the root folder of the internal memory.
− The unit resets to defaults and reverts to French.
− To change the language back to English, press “Menu Principal”, then “Conguration”, then press the French
ag and select the British ag for English.
Note: If errors persist, please contact B&K Precision for further assistance.
2.2 Extension Modules (DAS240-BAT only)
Up to 10 extension modules may be connected at a time.
Figure 2.3 Extension Modules
To assemble multiple terminal block modules:
• Screw the electrical connectors’ plate to each additional extension
• Assemble the extension modules together
• Screw the plates with the adjacent modules
• Stick the additional adhesive buttress
• Connect the cable using unlocking levers
• Connect the cable on the DAS240-BAT (must be powered off rst)
• Switch on the unit.
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Figure 2.4 Breakout Cable and Module
Note: The unit is delivered with a 70 cm cable.
2.3 External Power
The DAS240-BAT and DAS220-BAT recorders are powered and charged using a 15V DC, 5A power supply.
Warning: To minimize the risk of shock, the instrument chassis and cabinet must be connected to an electrical safety
ground. This instrument is grounded through the ground conductor of the supplied, three-conductor AC line power cable.
The power cable must be plugged into a three-conductor electrical outlet.
Warning: When the charger is connected to the unit, the chassis is connected to the power supply earth ground.
2.4 Battery
The unit is equipped with a lithium-ion battery. If the unit has remained unused for more than one month, check its
charge status and recharge it if necessary.
For continued safe use:
• Never heat up or expose the battery pack to re
• Never short the battery: there is a risk of explosion!
• Do not puncture the battery.
• Do not dismantle the battery pack.
• Do not reverse the polarities of the battery.
• This battery pack includes protection that should not be damaged or removed.
• Do not store the pack in a place exposed to excessive heat.
• Do not damage the protective sheath of the pack.
• Do not store inside a vehicle exposed to the sun.
The battery should last at least 200 full charge-discharge cycles or 2 years.
2.4.1 To Ensure Long Battery Life
• Do not store for a long time without use.
• Store the battery at around 40% charge.
• Do not fully charge or discharge the battery before storage.
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When the battery is nearly discharged, the unit closes all open les, stops the software, and will shut off automatically.
2.4.2 To Charge the Battery
• Connect the provided external AC adapter to the power input of the unit.
• Connect the AC adapter to a electrical outlet.
• The green LED will light when the battery is charging and will turn off when charging is complete.
• Charging can be done with the unit turned on or off.
Note: Battery replacement and service should be performed by B&K Precision. Contact us for details.
2.5 Calibration
The recorder inputs for the voltage and thermocouple offsets can be calibrated. This will remove any offset present on
different channels.
Figure 2.5 Offset Calibration Screen
1. Let the unit warm up for 20 minutes at ambient temperature 68-77F (20-25C).
2. Enter the recorder main page and then press the “Setup” key.
3. Select the “Additional Option” menu.
4. Select the “Electric Calibration” menu.
5. Press the “Calibration offset” to start calibration. This takes approximately 5 minutes.
6. Power cycle the unit.
2.5.1 Factory Default Calibration
The default factory calibration can be restored to correct any possible mistake in the calibration coecients. This restores
calibration values congured at the factory. This is performed as follows:
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1. Let the unit warm up for 20 minutes at ambient temperature 68-77F (20-25C).
2. Enter the recorder main page and then press the “Setup” key.
3. Select the “Additional Option” menu.
4. Select the “Electric Calibration” menu.
5. Press the “Recover factory calibration”.
6. Power cycle the unit.
2.6 Keypad Lock
To lock all keys:
• Press the “Setup” key.
• Press the “Additional Option” key.
• Press the “Locking the recorder” key.
• Press the green check mark to conrm and lock the unit.
The keypad lock will occur 10 seconds after conrmation.
A yellow padlock appears in the upper right corner of the display when locked. To unlock the recorder, press the lock
icon in the upper right corner repeatedly.
2.7 System Setup
The Setup Menu provides access to general setup of the instrument, monitoring of the alarm outputs, network address
TCP/IP, calibration of the channels, and software (rmware) updating. The setup menu is shown in Figure 2.6.
Button Description
1 Language
2 Screen dimming time
3 Date and time setup
4 VNC setup
5 Additional settings
6 Update
7 Load default settings
8 Load conguration from disk
9 Save conguration to disk
10 Network status and setup
11 Alarms
12 Channels
Figure 2.6 Setup Menu
2.8 Language
The system language can be set to one of the following: French, Spanish, English, Italian, German, and Swedish. Open
the language dialog by pressing the ag icon on the setup screen (Home>Setup). Then select the ag icon that correlates
to the language, Figure 2.7.
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Figure 2.7 System Languages
2.9 Screen Shut Off (Dimming)
The amount of time the screen back-light stays at full brightness may be set from 1-30 mins or (disabled). Use the arrow
keys to change the screen shut off timeout.
2.10 VNC
VNC (Virtual Network Computing) allows the user to mirror the front panel using a viewer on a networked computer.
This button is for setting the password. See Section 12.2 for more details.
2.11 Additional Options
Setting the screen brightness, locking the screen, calibrating the machine, setting the start-up screen image and settings
for the Modbus server are available in this menu. See Section 2.5 for calibration information, and see Section 2.6 for
screen lock information.
2.12 Firmware Update
See Chapter 13 for details about updating the rmware.
2.13 Instrument Conguration Loading and Saving
Settings like the F(t) time/division and channels to display may be saved and recalled by the instrument. Also, a default
set of settings may also be loaded. These can be congured with the 3 buttons in the “Setup” box of the setup display
window (home>setup).
2.14 Network
The current IP addresses of the network is shown within the network button. If there is no network connection, 0.0.0.0
is shown.
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Figure 2.8 Network
Conguration Dialog
Pressing the button opens the network conguration dialog. Available options are shown in this window depending on
the hardware connected. DHCP, IP Address, Subnet Mask, and Gateway IP can be congured here.
2.15 Alarms
See Chapter 9 for details.
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Channel Setup
3.1 All Channels Screen
Access the channel setup menu from the Home screen and press the “Channels” button. The screen shown in Figure 3.1
appears.
Figure 3.1 Channels Menu
The channel conguration screen provides quick access to individual channel settings. Each column lists a set of values
for each channel. The parameter available is listed in the left and right most columns. Pressing the box corresponding to
the channel and parameter opens a dialog box with options for conguring that parameter. The contents of the dialog
change depending on the selected parameter value. For example, when the channel type parameter is opened, selecting
the Thermocouple value modies the box to give further options for thermocouples (type, temperature units, etc…).
Back on the main channel table, the value in the box shows a summary version of the parameter’s congured value.
In the upper right and left corners of the table are navigation arrows for showing more sets of channels. 10 channels may
be shown on screen at a time.
3.2 Individual Channel Screen
The complete set of parameters, values and options are also viewable for a single channel on a single screen. To open this
screen, press the box displaying the Channel ID (A1 for example). This opens a window for setting a greater number of
values than available from the channels table. For example, the plot color and thickness can be set here. See Figure 3.2.
3.3 Extension Modules (DAS240-BAT only)
Up to 10 extension modules may be connected at a time.
To assemble multiple terminal block modules:
• Screw the electrical connectors’ plate to each additional extension
• Assemble the extension modules together
• Screw the plates with the adjacent modules
• Stick the additional adhesive buttress
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