Masibus RC-12 User manual

User’s Manual
R
RT TD D C CA AL LI IB BR RA AT TO OR R
R
RC C- -1 12 2
Masibus Automation & Instrumentation Pvt. Ltd.
B/30, GIDC Electronics Estate,
Sector-25, Gandhinagar-382044, Gujarat, India
[phone] [phone]
Email: [e-mail]
Web: www.masibus.com
Doc. Ref. no.:mL12/om/401 Issue no. 01

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Contents
1. Introduction.....................................................................................................4
Foreword..........................................................................................4
Notice...............................................................................................4
Trademarks......................................................................................4
Safety ...............................................................................................4
General warnings............................................................................5
Electrical warnings..........................................................................5
Cautions...........................................................................................5
Summary of functions.....................................................................6
2. RC-12 Hardware Parts & Accessories....................................................7
2.1 Unpacking & Inspection..........................................................7
2.2 Operational Sections and Connections.................................7
2.2.1 The Terminal Connections ..............................................8
2.2.2 The KeyPad ..................................................................12
2.2.3 The Display...................................................................13
2.2.4 The USB Connection.....................................................13
2.2.5 Stand for Table Top Use ...............................................13
2.3 Power Options.......................................................................14
2.4 Battery....................................................................................14
2.4.1 Charge time....................................................................15
2.4.2 Operating Time ..............................................................15
3. Start Up & Basic Operations....................................................................16
3.1 Power ON or OFF.....................................................................16
3.2 The User Interface.................................................................16
3.2.1 The Status Bar..............................................................17
3.2.2 The Function key Bar....................................................18
3.2.3 Display Mode ................................................................18
3.2.4 Display Operations........................................................20
4. Menu Layout ................................................................................................25
4.1 MENU page ............................................................................25
4.2 MEASURE Page.....................................................................25

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4.2 SOURCE Page .......................................................................27
4.2.1 STEP Page ...................................................................28
4.2.2 RAMP Page ..................................................................30
4.2.3Continuity Test.................................................................32
4.3 DISPLAY Page .......................................................................33
4.3.1 EM Display Settings......................................................33
4.3.2 RTD Display Settings......................................................34
4.4 DATA LOGGING Page...........................................................36
4.6 SETTING Page .......................................................................38
4.6.1 HART Settings ..............................................................39
4.6.2 Display Settings ............................................................39
4.6.3 Date/Time Settings........................................................39
4.6.4 Calibration.....................................................................40
4.6.5 Battery Info....................................................................46
4.6.6Set Password...................................................................47
4.6.7Factory Reset...................................................................47
4.6.8 About Calibrator............................................................47
5. Maintenance & Troubleshooting...........................................................48
5.1 Common Problems................................................................48
5.2 Replacing the Battery............................................................48
6. General Specifications............................................................................. 49
6.1 General Specifications............................................................49
6.2 Display & Keys ........................................................................49
6.3 Special Features......................................................................49
6.4 Power Supply...........................................................................50
6.5 Physical....................................................................................50
6.6 Electrical Measurement Parameters and Accuracy..............50
6.7 Resistance Measurement 0 ... 4000 ohm ...............................50
6.8 Resistance Simulation 0 ... 4000 ohm....................................50
6.9 RTD Measurement and Simulation.........................................51
6.10 Available RTD Types.............................................................51
6.11Enclosure Dimensions...........................................................52
6.12 Ordering Code .......................................................................52

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1. Introduction
Foreword
Thank you for purchasing RTD Calibrator RC-12.
The RC-12 calibrator is compact hand-held calibrator
with an easy to use graphical user interface.
This manual describes the basic functions and
operation methods. Please read through this user’s
manual carefully before using the product
Notice
The contents of this manual are subject to change
without notice as a result of continuous improvements
to the instrument’s performance and functions.
Every effort has been made to ensure accuracy in the
preparation of this manual. Should any errors or
omissions come to your attention, however, please
inform MASIBUS Sales office or sales representative.
Under no circumstances may the contents of this
manual, in part or in whole, be transcribed or copied
without our permission.
Trademarks
Our product names or brand names mentioned in this
manual are the trademarks or registered trademarks
of Masibus Automation and Instrumentation (P)
Ltd. (Herein after referred to as MASIBUS).
Adobe, Acrobat, and Postscript are either registered
trademarks or trademarks of Adobe Systems
Incorporated. All other product names mentioned in
this user's manual are trademarks or registered
trademarks of their respective companies.
Safety
Before you use the instrument, make sure that you
read and understand all the related data. This
includes: the applicable local safety procedures, this
publication, and the instructions for the
accessories/options/equipment you are using it with

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General
warnings
WARNING
It is dangerous to ignore the specified limits for
the instrument or its related accessories.
Do not use the instrument or accessory if it is not
in its normal condition.
Use the applicable protection and obey all safety
precautions.
Do not use the instrument in locations with
explosive gas, vapor or dust. There is a risk of an
explosion.
Electrical
warnings
To prevent electrical shocks or damage to the
instrument, do not connect more than 30V
between the terminals, or between the terminals
and the ground.
This instrument uses a Lithium-Ion battery pack.
To prevent an explosion or fire, do not short
circuit, do not disassemble, and keep it safe from
damage. For operating conditions, see section 6.1
on Page-47
To prevent battery leakage or heat generation,
only use the battery charger in the temperature
range 0 to 45°C (32 to 113°F). For operating
conditions, see section 6.1 on Page-49.
To make sure the display shows the correct data,
disconnect the test leads before you set the
power to on or change to another measure or
source function.
Cautions
To prevent damage to the display, do not use
sharp objects on the screen.
Before you start an operation or procedure in this
publication, make sure that you have the necessary
skills (if necessary, with qualifications from an

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approved training establishment). Follow good
engineering practice at all times.
Summary
of
functions
This table gives a summary of the available functions
with the RC-12 calibrator.
Function
Easy to read liquid crystal display (LCD) in color
Rechargeable lithium Ion battery with enhanced power control
for prolonged battery life.
* Measure RTD(Pt10, Pt50, Pt100, Pt200, Pt400, Pt1000,
Pt100(3926),Ni100(672), Ni100(618), Ni120(672), Cu10(427),
Cu50(427), Cu100(427)), Resistance (0 to 4000 ohms), mA,
mA(24V), V
* Simulate RTD(Pt10, Pt50, Pt100, Pt200, Pt400, Pt1000,
Pt100(3926),Ni100(672), Ni100(618), Ni120(672), Cu10(427),
Cu50(427), Cu100(427)), Resistance (0 to 4000 ohms)
Step/Ramp functions: Automatic/Manual
Universal Serial Bus (USB) communications ports: For
computer Communications, Battery Charging& Firmware
Upgrade
Data Logging.
Other functions:
Maximum / Minimum / Average, filter, tare, adjustable
backlight, alarm indication (on the display and buzzer),
automatic Display off.
* Refer to the Specification Sheet on Page: 49

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2. RC-12 Hardware Parts & Accessories
2.1 Unpacking & Inspection
At the factory each new RC12 passes a careful inspection. It should be
free of scrapes and scratches and in proper operation order upon
receipt. The receiver should, however, inspect the unit for any damage
that may have occurred during transit. If there are signs of obvious
mechanical damage, package contents are incomplete, or the
instrument does not operate according to specifications, contact the
purchasing sales office as soon as possible.
The standard accessories are as follows:
If you have to return the instrument to the factory for any reason, use the
original packing whenever possible. Include a detailed description of the
reason for the return.
2.2Operational Sections and Connections
All sections and connections are presented in detail on the next pages.
Note: Keep in mind that the next picture (as well as all pictures of RC-12
in this manual) has an example configuration of modules. The
configuration of your RC-12 may vary significantly from the one in the
picture.
Sr.
No
Description
Qty
1.
Calibration Certificate
1
2.
RC12 user guide
1
3.
2mm to 2mm banana cable Red , 100cm
3
4.
2mm to 2mm banana cable Black , 100cm
3
5.
Crocodile clip Red
3
6.
Crocodile clip Black
3
7.
Connecting plug 4mm to 2mm, Red
3
8.
Connecting plug 4mm to 2mm, Black
3
9.
USB A to mini USB B type cable for PC communication and charging
1
10.
5V 1A charging adaptor
1
11.
Leather cover of RC12
1
12.
RC12 configuration & Logging software CD-mCAL.
1

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2.2.1 The Terminal Connections
EM Measure Terminals
Input Terminal for measuring voltage, current and supplying loop
power.
1
Terminal Connection For RTD
Measure & Source and EM
Measure
2
Keypad Section
3
Color Display
4
USB Connection Slot for PC
Communication & Charging
EM Measure Terminals
mA
Range: 0.000 –24.000 mA
Resolution: 0.001 mA
mA(24V)
Range: 0.000 –24.000 mA
Resolution: 0.001 mA
V
Range: 0.000 –30.000 V
Resolution: 0.001 V

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Current Measurement
RC-12 supports current measurement using either RC-12 as the
loop power supply while at the same time measuring the current or
simply measuring the current while an external power supply is
used.
The following picture displays the connection for Current
Measurement for different mode. And also different ways of
providing the supply power to the loop.
mA Current Measurement
In this mode RC-12 not providing any supply voltage. For
proper measurement the external device should capable of
providing the voltage supply. If the external device should not
capable, an external Power Supply should be connected in
series.

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mA Read Power Current Measurement
In this mode RC-12 works as Loop Power Supply while at
the same time measuring the current.
Voltage Measurement
RC-12is capable of voltage Measurement with two voltage
measurement ranges.
The following picture displays the connection for Voltage
Measurement for different mode.
RTD Terminals
Terminals for measuring & simulating RTD. For RTD/Ωtypes refer
specification sheet on page 50.
RTD/Resistance simulation
RC-12 is capable of RTD/Resistance generation. The following
picture displays the connection for RTD and Resistance
simulation. In RTD simulation RC-12 mimics an RTD. The
instrument under test generates the current for the RTD
measurement.
RC-12 controls the voltage across its terminals so that the
resistance (voltage to
Current ratio) corresponds to the simulated temperature. Use of 2-,
3-or 4-wire connection is up to the receiver instrument. Use only
the two leftmost terminals with every wiring option. Connect the
possible third and fourth wire according to the
Requirements of the connected instrument but use only the two left
most terminals.

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RTD/Resistance measurement
RC-12 is capable of RTD/Resistance measurement. The following
picture displays the connection for RTD and Resistance
measurement.
2-Wire RTD Measurement
Two leftmost terminals are used in 2-wire systems. RC-12
displays the selected wiring system in run page. RC-12
sources current through the resistor and measure the voltage
drop across same terminals. The result is acceptable, if the
resistance of the connection wires is significantly smaller
than actual measured resistance.
3-Wire RTD Measurement
RC-12 sources current through the resistor and measure the
voltage drop across the entire current loop and across the
upper side connection wire as shown in figure. If both left
side connection wires are identical, RC-12 can compensate
for the resistance of the connection wires.

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4-Wire RTD Measurement
RC-12 sources current through the resistor from two left side
terminals and measure the voltage drop across the resistor
from the two right side terminals. The 4-wire method gives
the resistance between the terminals of the resistor; it is
insensitive to the resistance of the connection wires.
2.2.2 The KeyPad
RC-12 has six different keys. The key description is given below.
This key has different functionalities in different menu. And that is shown on Bottom
Left Part of Display.
This key has different functionalities in different menu. And that is shown on Bottom
Right Part of Display.
This key is use to scroll down to the next parameter. And also for decrementing the
value of digit in Editbox.
This key is use to scroll up to the previous parameter. And also for incrementing
the value of digit in Editbox.
This Key is use for Entering into the MENU Page from Run Page.
And Also for Saving Edited Parameter to the memory.
This key is use to log current reading in memory if device is on Run Page& Log
Mode is Manual. (In other Page than Run Mode, this key is use to come directly to
Run Page.
Long presses (Approx. 2 Sec) on this key will ON-OFF the Unit.

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2.2.3 The Display
This is a LCD with a 2.4” color
display.
The display has resolution of
240x320 pixels supporting 262K
Colors.
Refer Section 3.2.3 on Page-17for
more details on Different Display
Mode and Icon Details.
2.2.4 The USB Connection
The USB Connection Connector is given at Top of
the RC-12. It’s a USB mini B-Type Female
Connector.
It is common for PC Communication & Charging the
device.
The USB cable given with the device is USB A-type
Male to USB B-type male. It’s common for
connecting Charger & PC.
2.2.5 Stand for Table Top Use
This Stand would offer the best support for table top use which
gives good viewing angle when UC12 is placed table top
Procedure to Open Stand
ois being engraved on the top of the
stand. You should pull a bit first.
ois being engraved on the bottom of the
stand. Now during first pull of above you can
release this lower part easily so that you can
maneuver the stand as you like.

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2.3 Power Options
There are three power options:
Lithium-Ion battery: All the instrument functions
are available with a charged battery.
5 V DC Charging Adaptor: It supplies power to
the instrument and charges the battery at the
same time. It charges the battery when the
instrument is on or off.
USB mini Type B connection: This charges the
battery when the instrument is off and increases
the battery life when the instrument is on
instrument cannot be charged with USB when it is
ON.
2.4Battery
The Device uses 2300mAh Lithium-Ion Battery.
WARNING
To prevent an explosion or fire, do not
short circuit, do not disassemble, and
keep it safe from damage. For operating
conditions, see section 6.1 on Page-49.
To prevent an explosion or fire, use
only the Masibus specified battery,
battery charger & USB Cable.
To prevent battery leakage or heat
generation, only use the battery charger
in the temperature range 0 to 45°C (32 to
113°F). For operating conditions, see
section 6.1 on Page-49.
When you set the power on, the battery symbol
at the top of the display shows the charge
Status. To get more information on Battery go
to Battery Info Page in Setting Menu.

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2.4.1 Charge time
Note:
USB mini Type B connector charges the battery when
the instrument is off and increases the battery life when
the instrument is on.
2.4.2 Operating Time
Operation
Battery Duration
Continuous operation (measure)
> 18 hours
Continuous operation (measure and
source(@12mA))
> 8 hours
These are typical operating times for a new, fully charged
Li-Ion battery pack with these settings:
Backlight Intensity set to 5% (Default: 100%)
Backlight Timeout set to 0 (0=Infinite) (Default: 0)
Power save options: To get the best battery duration,
set a low value for the Backlight Intensity (40%) and a
short Timeout.
The maximum operating time without recharging varies
depending on the usage and brightness setting of the
display light. Also the generated output current and the
usage of the 24V transmitter supply affect the maximum
operating time.
Notes:
LC-12’s memory and the internal clock/calendar use a
small amount of power although the calibrator is
switched off. Remember to check the capacity of the
batteries from time to time although LC-12 is not in use.
Do not leave LC-12 without a Battery Pack or an Empty
Battery for a long time. LC-12 may lose its settings if it is
left without a support voltage for an extended period.
\Charge Method
Charge Time (to Full Capacity)
External Charging
Adaptor
≈ 5 hours

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3. Start Up & Basic Operations
3.1 Power ON or OFF
To set the instrument power ON, press and release
button until the display comes on. During the power on
sequence, the instrument shows a Startup Message and
then shows the applicable data.
To set the instrument power off, press and hold (≈ 2
seconds) button again. When the power is off, the
last set of configuration options stays in memory.
3.2 The User Interface
Every time RC-12 is switched on, the startup message ends in RUN
Page.
There are3 Display Mode available in RUN Page.
1. RTD Measure/Source Mode
2. EM Measure Mode
3. RTD Measure/Source + EM Measure Mode
This Display Mode can be selected from MENUDISPLAY Page.
In case of Dual Mode Display Screen is divided into two parts. Due to
that only few additional info will appear on RUN Page. But Which
Information to be shows can be selectable in Display Mode Menu. Refer
Section 3.2.3 on Page-17for more info.

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3.2.1 The Status Bar
The Status Bar at the top of the display is visible only in
RUN Page. It is divided into four main sections.
1
Time in HH:MM:SS Format
Available in Two Format
1. 24 Hour (default)
2. 12 Hour
This setting is available in Date/Time in Settings Menu
2
Error Code Indicator
This Icon is visible if any On-Board Peripherals like RTC, ADC, DAC, etc.
not working Properly. Refer Section 5.1 on Page 48 for Troubleshooting
these Errors.
The List of Error Code available in this device is given below.
Error Code
Description
0
Memory Corrupted or Device Unable to
Read/Write it.
1
RTC Not working Properly
2
Device unable to Read battery Information.
3
Measure Mode Not Working
5
Data Log Memory Corrupt
6
Source Mode Not Working
9
More than one Errors from above list is
occurring.
3
USB Connection Status Icon
Icon is visible if USB Charger Adaptor or USB Data Cable is connected to
the Device. Icon is different for both indication & this stated below.
USB Data Cable is connected & Communication
with PC is available.
USB Charger Adaptor is connected.
Battery starts Charging.
4
Battery Charge Percentage Indicator.
Always visible in Run page. Battery % is shown in the center of the icon.
And the icon background is filled with Green, Yellow & Red color if
Battery % is >= 50%, >= 20 &<20 respectively.
5
Data Logging Enable Status Indicator.
Icon is visible if Data Logging is enabled and also it will blink when a
Datalog is stored to memory.

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3.2.2 The Function key Bar
The Function Key Bar at the bottom of the display is
visible all the time. There are 2 Function Key Available.
The meaning of the Function Keys varies depending on
the situation. A Blank Function key text means that the
function is disabled at the moment.
3.2.3 Display Mode
i. RTD Mode
RTD Display Mode
RTD Mode
Shows the Current RTD Mode
RTD Measure Mode
RTD Source Mode
Output Type
Shows the current RTD Type.
Source Reading
Shows the RTD Source reading according to RTD Type.
STEP/RAMP
Icon
Shows the Icon indicating STEP/RAMP mode. Only applicable if
RTD mode is SOURCE.
Manual Step
Rising Ramp
Step UP
Falling Ramp
Step DOWN
Ramp Hold @
0%

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Ramp Hold @
100%
Additional Info.
Shows the Addition Information according to TC Mode & Additional
Info selected in MENU DISPLAYTC terminal.
Bar Graph
Horizontal Bar graph according to RTD Percentage Value (0.00% -
100.00%). The value scales according to RTD reading and Input 0%
& 100% value as set in MENU DISPLAYRTD terminal Menu.
Percentage
Value
The Percentage Value in according to RTD Reading.
Wire Select
Shows which RTD configuration is used. ( 2-wire, 3-wire, 4-wire)
Source Display
Mode
Shows which display mode is selected either percentage or actual.
Actual Value
When display mode percentage Actual value bar display the actual
source value.
Source Info
When RTD is in source mode it shows the excitation current which
comes from the measure device.
ii. EM Measure Mode
Measure Window
Input Type
The Input Type.
mA
mA Current Input
mA(24V)
mA Current (Read Power-24V) Input
V
V Voltage Input
Measure Display Mode
The Measure Reading Display Mode.
Actual
Displays the Raw Input Value without any
scaling
Percentage
Displays the Percentage Value.
Scaled
Displays the Scaled Value
Measure Reading
The Reading as per the Measure Display Mode
HART Icon
HART Enable Status Icon.
This icon will appear if HART is enabled from
MENU SETTING HART page. (This icon is visible
for mA(24V) Input Type only. For other Input Types this
will invisible regardless of HART settings)
Bar Graph
Horizontal Bar graph according to Input Percentage
Value (0.00% - 100.00%).

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Percentage Value
The Percentage Value in Percentage according to Input
Value.
Tare
The Tare Value Set from MENUDISPLAYEM
Terminal-Tare page
Actual Value
The Raw Input Value without any scaling
This will appear only if Main Display in
MENUDISPLAYEM Terminal is set to
PERCENTAGE/SCALED.
Min
Displays the minimum value found after a measurement
was started or minimum was reset.
Max
Displays the maximum value found after a
measurement was started or maximum was reset.
Max-Min
Displays the Maximum-Minimum value found after a
measurement was started or Maximum-Minimum was
reset.
Cumulative Average
Displays the Cumulative Average value found after a
measurement was started or Cumulative Average was
reset.
iii. RTD + EM Mode
RTD + EM Mode
Output Type
Source Reading
STEP/RAMP Icon
Source window
Refer RTD Display Mode on Page 17.
Input Type
Measure Reading
HART Icon
Refer EM Display Mode on Page 18
3.2.4 Display Operations
There are mainly four types of widgets available in the Device Menu
Style.
i. ListBox
ii. EditBox