Martel MC1000 User manual

MC1000
Multi-Function
Calibrator

Table of Contents
1. Introduction
1.1 Customer Service . . . . . . . . . . . . . . . .1
1.2 Standard Equipment . . . . . . . . . . . . . .1
1.3 Safety Information . . . . . . . . . . . . . . . .2
2. Quick Start Instructions
A. Key Functions . . . . . . . . . . . . . . . . . . . .6
B. Setpoints . . . . . . . . . . . . . . . . . . . . . . .7
3. Connection Diagrams & Instructions
A. Measuring High Voltage AC or DC . . .10
B. Measuring Low Voltage
and Frequency . . . . . . . . . . . . . . . . . .10
C. Measuring Current . . . . . . . . . . . . . . .11
D. Sourcing Current . . . . . . . . . . . . . . . .11
E. Simulating Current . . . . . . . . . . . . . . .12
F. Sourcing Voltage/
Resistance/Frequency . . . . . . . . . . . . .12
G. Sourcing a Thermocouple Signal . . . .13
H. Measuring Temperature Using a
Thermocouple . . . . . . . . . . . . . . . . . .13
I. Measuring Resistance (RTDs) . . . . . . .13
J. Sourcing Resistance (RTDs) . . . . . . . .15
4. Serial Communications . . . . . . . . . . . .15
5. Maintenance
A. Power Requirements . . . . . . . . . . . . .19
B. Calibration . . . . . . . . . . . . . . . . . . . . .19
C. Field Replacement Fuse . . . . . . . . . . .19
6. Specifications . . . . . . . . . . . . . . . . . . .20
7. Warranty . . . . . . . . . . . . . . . . . . . . . . .23

1
MC-1000
1. Introduction
The MC1000 is designed to be a versatile, easy
to use multi-function calibrator with a simple
user interface. The following instructions will
allow the user to begin simple calibration tasks
by learning the basic operation of the keys and
their functions.
1.1 Customer Service
Corporate Office:
www.martelcalibrators.com
e-mail: [email protected]
Tel: [phone]
Fax: [phone]
Martel Electronics
PO Box 770
1F Commons Drive
Londonderry, NH 03053
1.2 Standard Equipment
Check to see if your calibrator is
complete. It should include:
MC1000 Calibrator, Instruction Manual, Test
Leads, Rubber Boot and NIST Certificate.

2
1.3 Safety information
Symbols Used
The following table lists the International
Electrical Symbols. Some or all of these sym-
bols may be used on the instrument or in this
manual.
Symbol Description
AC (Alternating Current)
AC-DC
Battery
CE Complies with European Union
Directives
DC
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual
(Important Information)

3
Off
On
Canadian Standards Association
The following definitions apply to the terms
“Warning” and “Caution”.
• “Warning” identifies conditions and actions
that may pose hazards to the user.
• “Caution” identifies conditions and actions
that may damage the instrument being used.
Use the calibrator only as specified in this man-
ual, otherwise injury and damage to the calibra-
tor may occur.
Warning
To avoid possible electric shock or
personal injury:
• Do not apply more than the rated voltage.
See specifications for supported ranges.
• Follow all equipment safety procedures.
• Never touch the probe to a voltage source
when the test leads are plugged into the cur-
rent terminals.
• Do not use the calibrator if it is damaged.
Before you use the calibrator, inspect the
case. Look for cracks or missing plastic. Pay
particular attention to the insulation surround-
ing the connectors.
• Select the proper function and range for your
measurement.
• Make sure the battery cover is closed and
latched before you operate the calibrator.

4
• Remove test leads from the calibrator before
you open the battery door.
• Inspect the test leads for damaged insulation
or exposed metal. Check test leads continuity.
Replace damaged test leads before you use
the calibrator.
• When using the probes, keep your fingers
away from the probe contacts. Keep your fin-
gers behind the finger guards on the probes.
• Connect the common test lead before you
connect the live test lead. When you discon-
nect test leads, disconnect the live test lead
first.
• Do not use the calibrator if it operates abnor-
mally. Protection may be impaired. When in
doubt, have the calibrator serviced.
• Do not operate the calibrator around explo-
sive gas, vapor, or dust.
• When using a pressure module, make sure
the process pressure line is shut off and
depressurized before you connect it or dis-
connect it from the pressure module.
• Disconnect test leads before changing to
another measure or source function.
• When servicing the calibrator, use only speci-
fied replacement parts.
• To avoid false readings, which could lead to
possible electric shock or personal injury,
replace the battery as soon as the battery
indicator appears.
• To avoid a violent release of pressure in a
pressurized system, shut off the valve and
slowly bleed off the pressure before you
attach the pressure module to the pressure
line.

5
Caution
To avoid possible damage to calibrator or
to equipment under test:
• Disconnect the power and discharge all high-
voltage capacitors before testing resistance
or continuity.
• Use the proper jacks, function, and range for
your measurement or sourcing application.
• To avoid mechanically damaging the pressure
module, never apply more than 10 ft-lb. of
torque between the pressure module fittings,
or between the fittings an the body of the
module.
• To avoid damaging the pressure module from
overpressure, never apply pressure above the
rated maximum printed on the module.
• To avoid damaging the pressure module from
corrosion, use it only with specified materials.
Refer to the pressure module documentation
for material compatibility.

2. Quick Start Instructions
A. Key Functions
Key Function
Input/Output Toggles the function selected
from measurement mode to
source mode.
V/mA/Hz Selects between volts, mil-
liamps, and frequency modes
TC/RTD Selects between temperature
modes either T/C or RTD.
Ohms and mV ranges are also
included in these functions.
Ranges/Units This key toggles through all
the ranges for a chosen func-
tion. Example: If T/C mode is
selected the Range key tog-
gles through the ranges J, K,
T, E, etc.
0-9 keys These keys allow a user to
enter an output value.
Example: to output 20 mA
select mA output and Press
the “2” key then the “0” key
followed by the “ENTER” key.
Arrow ↑↓ These keys allow small
changes to be made to an out-
put value. Press either the up
or the down arrow key to set
the value as desired.
CE The clear entry key allows the
user to clear a value before the
enter key is pressed.
Shift This key has a blue text color
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and acts as a second function
key to all keys that have an
associated second function.
Features such as setpoints,
°F/°C, backlight and external
pressure module activation all
use the Shift key.
B. Setpoints
1. Storing Setpoints
The setpoint mode allows up to 9 set-
points to be stored in non-volitile memo-
ry for each range. The procedure is as
follows:
a. Set the output to the desired value.
b. Press shift followed by the “SET” key.
c. Choose the desired setpoint storage
location by pressing a key (1-9).
d. Enter a new value and repeat steps 1
thru 3 as needed, up to 9 setpoints for
each range can be stored.
2. Recalling Setpoints
a. To recall a setpoint, press shift fol-
lowed by the”SPT” key.
b. You will be prompted to enter the
number of the desired setpoint loca-
tion stored previously.
c. Press the desired location number and
the unit will go to that output.
3. Automated Stepping
The MC1000 can auto-step through
some or all of the stored setpoints for a
given range. The procedure is as follows:
a. Press “Shift” followed by auto.
b. “Auto SPT ?” will appear. Enter the
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ending setpoint location. Example: if
you have all 9 setpoints stored but
only want to step through the first 3
then enter “3” for this question.
c. The next screen prompts you to enter
the dwell time from 5 to 500 seconds.
Simply enter a number in that range.
Then press the “Enter” key.
d. Auto-step will begin.
e. To exit auto-step press “CE” key or
enter a value.
4. Manual Stepping
The MC1000 can be manually stepped
through all or some of the stored set-
points. The procedure is as follows:
a. Press “Shift” followed by “Man”.
b. Using the arrow keys, toggle up and
down through the stored setpoints.
c. To exit press CE or simply enter a new
output value.
5. Pressure Module Interface
The MC1000 has the capability to inter-
face with a family of pressure modules
available from Martel. The procedure is
as follows:
a. Connect the pressure module to the
15 pin “D” connector on top of the
MC1000.
b. Press “Shift” followed by the “ ”
key.
c. Always zero the pressure module
before starting a calibration. Press
“Shift” followed by the “Zero” key.
Note: More detailed information can be found with
the instructions packaged with each module.
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9

10
3. Connection Diagrams &
Instructions
A. Measuring High Voltage AC or DC
1. Select the Voltage Input Mode. Use the
“Range” key to select either AC or DC input.
2. Connect the device to be measured as
shown in Figure 1.
! WARNING ! When measuring high voltage be
sure to use proper connections as shown in
Figure 1. Failure to do so will cause serious
damage to the calibrator.
B. Measuring Low Voltage and Frequency
1. Select the desired mode Voltage or
Frequency. Use the “Range” key to select the
proper range for the mode chosen.
2. Connect the device under test as shown in
Figure 2.
Figure 1.
Figure 2.
! WARNING ! Do not exceed 20 VDC at the
V/Ω/Hz input.

11
C. Measuring Current
1. Select the mA input mode. Note: To power
the loop while reading current, select the
“mAPW” mode.
2. Connect the device under test as shown in
Figure 3.
3. Current can either be measured directly in
mA or as a percentage such that 4 to 20 mA
corresponds to 0 to 100%.
D. Sourcing Current
1. Select the mA output mode on the calibrator.
2. Connect device under test as shown in
Figure 4.
3. Enter the value of desired output current.
Note: If the loop is open “OL” will appear in the
display.
Figure 3.
Figure 4.

12
E. Simulating Current
The MC1000 can act as a two-wire transmitter
and control a 4-20mA loop from the external
power supply for that loop.
1. Select the mA “2W” output mode.
2. Connect the device as shown in figure 5.
3. Enter the desired output.
F. Sourcing
Voltage/Resistance/Frequency
1. Select the proper operation mode: volts,
ohms, frequency.
2. Connect device under test as shown.
3. In the resistance or frequency modes use the
“Range” key to choose the desired range for
the mode you’re operating in.
4. The MC1000 is capable of driving up to ±1
mA on the Voltage and Frequency ranges
and is able to handle up to a 3 mA excitation
on the Resistance Simulation Range.
Exceeding these limits will result in a warning
on the display.
Figure 6.
Note: The frequency output is a 12 Volt square
wave with –.1 volt offset
Figure 5.

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I. Measuring Resistance (RTDs)
When measuring resistance (ohms) there are 3
choices when using the MC1000; 2-wire, 3-
wire, and 4-wire. While 4-wire offers the highest
accuracy, most industrial RTDs are a balance 3-
wire. Figure 9. shows how to hook up the
MC1000 for the 3 types of measurements.
1. Choose the desired RTD/ohms range by first
pressing the “TC/RTD” key to get into the
RTD mode. Then use the “Range” key to
select the desired range within the RTD
mode.
H. Measuring Temperature Using a
Thermocouple
Figure 8.
G. Sourcing a Thermocouple Signal
TC wire must be used to achieve an accurate
calibration.
Figure 7.
Note: For best accuracy allow a 10 minute
warm-up period after the MC1000 is turned on.

14
2. Make sure the MC1000 is in the Input Mode
(Note: that it will indicate 2, 3, or 4W in the
upper left corner of the LCD).
To set the desired wire configuration use the
“Up/Down arrow” keys to toggle through the
2, 3, and 4 wire modes.
Measuring a 2 Wire RTD or Using the
Continuity Function
Measuring a 3 Wire RTD
Measuring a 4 Wire RTD
Figure 9.

15
4. Serial Communications
The MC1000 calibrator is equipped with a RS-
232 serial communications port, which is locat-
ed on the top of the case.
Note: The user will require a special RS-232
cable to connect the calibrator to a computer or
terminal.
Communication
Once the cable is attached, set the communica-
tions program settings as follows:
Baud Rate = 9600
Data Bits = 8
Stop Bits = 1
Parity = None
Flow Control = Xon/Xoff
J. Sourcing Resistance Into a RTD
Transmitter
1. As described previously in section F the
MC1000 can source resistance in a RTD
Transmitter or measuring device. In many
cases the unit under test will require a 3 or 4
wire connection to achieve best accuracy.
Refer to Figure 10 for connection information.
Figure 10.

The MC1000 calibrator can be used with
virtually any terminal emulation software. (i.e.
Procomm or HyperTerminal)
When connected properly, data will be transmit-
ted as soon as the calibrator is turned on. The
data transmitted to the terminal or computer will
mirror that sent to the calibrators LCD display
and will be updated approximately every 0.4
seconds.
Serial Communications
Procedure for HyperTerminal
Program
1. From the Windows®XP desktop, click on
“Start”.
2. Click on “All Programs”.
3. Under the category “Accessories”, click on
“Communications”.
4. Click on “HyperTerminal”.
5. Next appears a screen labeled: CONNEC-
TION DESCRIPTION. In the box titled: Name,
enter a name for your program settings...
example: “MC Connection”. In a box titled:
Icon, click on the icon of your choice. Click
on the OK box to accept these entries.
6. Next appears a screen labeled: CONNECT
TO. In the box titled: Connect Using, select
the serial port that corresponds to the com-
puter serial port that you’ll be using to com-
municate to the MC1000 calibrator. Click on
the OK box to accept this entry.
7. Next appears a screen labeled: COM X
PROPERTIES (where X corresponds to the
serial port selected in step #6). Enter port
settings as follows:
(A.) Bits per second: 9600
(B.) Data bits: 8
(C.) Parity: None
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(D.) Stop Bits: 1
(E.) Flow Control: Xon/Xoff
Click OK box to accept these entries.
8. Hook up the MC1000 calibrator to the PC uti-
lizing the special Martel Electronics RS-232
cable as follows:
(A.) Plug the 9 pin connector end of the
cable to the appropriate serial port
on the computer.
(B.) With the MC1000 calibrator
switched off, plug the other end of
the cableplug the other end of the
cable into the DB-15 connector on
the top of the MC1000 calibrator.
9. Power up the MC1000 calibrator per the
appropriate instruction manual. The computer
screen should now be displaying data being
sent directly from the MC1000 calibrator.
Note: You may wish to save these settings
when exiting HyperTerminal. If so, click on the
OK box when prompted “Do you want to save
X?”, where X corresponds to the name entered
in Step #5.
Computer Controlled Operation
The MC1000 calibrator can be operated remote-
ly via a computer or terminal. When connected
to a computer, via the RS-232 serial data port
and appropriate cabling, the user may control
the calibrator functions remotely by utilizing sim-
ple computer keyboard commands.
The following chart details which computer keys
control which MC1000 calibrator functions:
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Serial Input Description
A mA measurement
a mA source
I mA loop
i mA 2W Sim
V Volts measurement
v Volts source
M mV measurement
m mV source
E HVAC measure
e HVDC measure
K Khz measurement
k Khz source
H Hz measurement
h Hz source
P CPM measurement
p CPM source
W 2-wire measurement (Ohms and RTDs)
X 3-wire measurement (Ohms and RTDs)
Y 4-wire measurement (Ohms and RTDs)
T Thermocouple measurement (default Type J) use
"S" command to select sensor type
t Thermocouple source (default Type J) use "S"
command to select sensor type
C Selects Centigrade ( T/C - RTD )
F Selects Fahrenheit ( T/C - RTD )
R RTD measurement mode (default Pt100 385) use
"S" command to select sensor type
r RTD measurement mode (default Pt100 385) use
"S" command to select sensor type
0-9 Enter a source value using ascii characters
-,. 0,1,2,..,9,-,.terminated by <CR>(carriage
<CR> return)
D Single Broadcast of most recent display value and
units
d Single Broadcast of most recent display value
"S" Commands Select
Sensor Type
Serial Input Selection Entry Description
S No. T/C Type RTD Type
1 J Pt100 (3926)
2 K Pt100 (385)
3 T Pt100 (3916)
4 E Cu10
5 R Pt200 (385)
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