Ametek JOFRA AMC910 User manual

Reference Manual
Advanced Multi-Purpose
Calibrator
AMETEK JOFRA AMC910
Copyright 2008 AMETEK Denmark A/S

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Table of Contents
1. Introduction ..............................................................................5
1.1 Technical assistance .................................................................... 5
1.2 Standard Equipment ..................................................................... 5
1.3 Options and Accessories .............................................................. 5
1.4 Unpacking ..................................................................................... 6
1.5 Safety Information......................................................................... 7
2. Calibrator Description............................................................10
2.1 Front Panel Overview ................................................................. 10
2.2 Primary Input/Output Terminals.................................................. 11
2.3 Primary Input/Output Display Controls ....................................... 12
2.3 Isolated Input Display, Controls and Terminals .......................... 15
2.5 Rear Panel .................................................................................. 17
2.6 Display Layouts........................................................................... 18
2.7 Error Messages........................................................................... 22
3. Getting Started .......................................................................23
4. Primary Inputs and Outputs ..................................................24
4.1 DC Voltage Output...................................................................... 24
4.2 DC Current Output...................................................................... 25
4.3 Resistance Temperature Detector (RTD) and Ohms Measure .. 27
4.4 Resistance Temperature Detector (RTD) and Ohms Source..... 29
4.5 Resistance Temperature Detector (RTD) with Custom
Coefficients ................................................................................. 30
4.6 Standard Platinum Resistance Thermometer (SPRT)
Coefficients ................................................................................. 32
4.7 Thermocouple (T/C) Measure..................................................... 34
4.8 Thermocouple (TC) Source ........................................................ 36
4.9 Pressure Measure....................................................................... 37
5. Isolated Inputs ........................................................................39
5.1 Voltage Input............................................................................... 39
5.2 Current Input ............................................................................... 39
5.3 Pressure Input............................................................................. 40
6. Output Setpoint ......................................................................42
7. Application Notes...................................................................44
7.1 P/I Transmitter ............................................................................ 44
7.2 I/P Transmitter ............................................................................ 45

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7.4 RTD Test..................................................................................... 47
7.5 RTD Transmitter ......................................................................... 48
7.6 Thermocouple Test..................................................................... 49
7.7 Thermocouple Transmitter.......................................................... 50
7.8 RTD Indicator.............................................................................. 51
7.9 I/I Isolator/Transmitter ................................................................. 52
7.10 I/I Isolator/Transmitter ................................................................. 53
7.11 Precision Temperature Measurement with STS Probe .............. 54
8. LCD and Remote Interface Setup Procedures.....................55
9. Remote Interface ....................................................................55
9.1 Introduction ................................................................................. 55
9.2 Setting up the RS-232 Port for Remote Control ......................... 56
9.2.1 Using the AMC910 on Computers with USB Ports ........ 56
10. Remote Commands................................................................74
10.1 Introduction ................................................................................. 74
10.2 Command Summary by Function ............................................... 74
10.3 Error Code Listing....................................................................... 77
10.4 Remote Command Listing .......................................................... 78
11. Maintenance..........................................................................104
11.1 Cleaning the Calibrator ............................................................. 104
11.2 Replacing a Line Fuse .............................................................. 104
11.3 Changing the Line Voltage ....................................................... 105
12. Specifications .......................................................................106
12.1 General Specifications.............................................................. 106
12.2 DC Voltage Specifications, Output ........................................... 107
12.3 DC Voltage Specifications, Isolated Input ................................ 108
12.4 DC Current Specifications, Output............................................ 108
12.5 DC Current Specifications, Isolated Input................................. 109
12.6 Resistance Specifications, Output............................................ 109
12.7 Resistance Specifications, Input............................................... 109
12.8 Thermocouple Specification, Output and Input ........................ 110
12.9 RTD and Thermistor Specification, Output............................... 112
12.10RTD and Thermistor Specification, Input ................................ 114
12.11Electromagnetic Compability................................................... 116
12.12Pressure Measurement Specifications.................................... 117
13. Warranty................................................................................119

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1. Introduction
The AMETEK JOFRA series AMC910 calibrator is an accurate full-featured
temperature, pressure and DC calibrator intended for R & D,
manufacturing and calibration lab applications. The unit's simple design
and ease of operation allow users to quickly familiarize themselves with its
operations and features. Time saving functions like the ability to save,
recall and automatically cycle through setpoints for each output range,
the ability to enter user definable RTD curves, and a complete remote
interface are several key features offered by the AMC910.
1.1 Technical assistance
Please contact the dealer from whom you acquired the instrument if you
require technical assistance.
See web www.ametekcalibration.com.
1.2 Standard Equipment
• AC Power cord
• Thermocouple shorting jumper
1.3 Options and Accessories
Part No. Description
121985 Extension cable for Pt100 sensor, length 5.0 m
121983 Extension cable for Type K - 5 m
122523 Extension cable for Type N - 5 m
120519 Thermocouple Male Plug - Type Cu-Cu - White
120518 Thermocouple Male Plug - Type R / S - Green
120517 Thermocouple Male Plug - Type K - Yellow
120516 Thermocouple Male Plug - Type J - Black
120515 Thermocouple Male Plug - Type T - Blue
120514 Thermocouple Male Plug - Type N - Orange
2206011 Thermocouple plug + K wire + alligator
2206012 Thermocouple plug + T wire + alligator
126812 Cable for USB to RS232
105366 Cable for RS232
104203 Test lead set
The AMC910 and above options are available in a complete kit form.

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1.4 Unpacking
Upon receipt of the shipment, inspect the container and equipment for
any signs of damage. Take particular note of any evidence of rough
handling in transit. Immediately report any damage to the dealer who
sold you the calibrator.
NOTE: The carrier will not honor any claims unless all shipping material is
saved for their examination.
After examining and removing the contents, save the packing material and
carton in the event that re-shipment is necessary.
Remove the Packing List and verify that all of the listed equipment has
been received. If there are any questions about the shipment, please call:
Sales & Service Offices:
AMETEK Mansfield & Green (North America)
Tel: [phone] • [email protected]
AMETEK Singapore Pte. Ltd. (Singapore)
Tel: [phone] • [email protected]
AMETEK Inc. Beijing Rep. Office (China)
Tel: [phone] • [email protected]
AMETEK GmbH (Germany)
Tel: [phone] • [email protected]
AMETEK Lloyd Instruments (UK)
Pub code P-CP-2050-US Issue 0710
Tel: [phone] • [e-mail]
Check to see if your basic calibrator package is complete. It should
include:
• AMC910 Calibrator
• Instruction Manual
• AC Power Cord
• Thermocouple Shorting Jumper
• NIST Traceable Certificate

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1.5 Safety Information
Symbols Used
The following table lists the International Electrical Symbols. Some or all of
these symbols 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)
Off
On
Canadian Standards Association
CUS

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This calibrator must be recycled or disposed of properly
(2002/95/EC).
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 manual, otherwise personal
injury and/or damage to the calibrator may occur.
Warning
To avoid possible electric shock or personal injury:
• Do not apply more than the rated voltage between the terminals, or
between any terminal and chassis ground. See specifications for
supported ranges.
• Follow all equipment safety procedures.
• Always use the power cord and connector suitable for the voltage and
outlet of the location in which you are working.
• 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 surrounding the connectors.
• Inspect the test leads for damaged insulation or exposed metal.
Check test lead continuity. Replace damaged test leads before you
use the calibrator.
• Never operate the calibrator with the cover removed or the case open,
and never remove the cover or open the case without first
disconnecting the power source and all test leads.
• Select the proper function and range for your measurement.
• Never touch the probe to a voltage source when the test leads are
plugged into the current terminals.
• When using the probes, keep your fingers away from the probe
contacts. Keep your fingers behind the finger guards on the probes.
• Connect the common test lead before you connect the live test lead.
When you disconnect test leads, disconnect the live test lead first.

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• Do not use the calibrator if it operates abnormally. Protection may be
impaired. When in doubt, have the calibrator serviced.
• Do not operate the calibrator around explosive gas, vapour, or dust.
• When using a pressure module, make sure the process pressure line
is shut off and depressurized before you connect it, or disconnect, it
from the pressure module.
• Disconnect test leads before changing to another measure or source
function.
• Have the calibrator serviced only by qualified personnel, and use only
specified replacement parts.
• Use only the replacement fuse(s) specified in this manual.
• 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.
Caution
To avoid possible damage to the calibrator or to the equipment under test:
• Use the proper terminals, 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 and 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.

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2. Calibrator Description
2.1 Front Panel Overview
Figure 1 shows the overall layout of the front panel. Each of the three
major divisions is described in detail in the following sections.
Figure 1 - Front Panel
Item Name Description
1 Primary input/output terminals See section 2.2 for details
2 Primary input/output display and controls See section 2.3 for details
3 Isolated input display, controls, and terminals See section 2.4 for details

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2.2 Primary Input/Output Terminals
Figure 2 describes the primary input/output terminals in detail. The
display and controls for these terminals are described in the next section.
Figure 2 - Primary Input/Output Terminals
Item Name Description
1 VOLTS DC voltage output terminals. See
notes 1 and 2 below.
2 mA DC current output terminals. See notes 1 and 2
below.
3 RTD/O OUTPUT Two wire RTD and Ohms output terminals. See
notes 1 and 2 below.
4 TC INPUT/OUTPUT Thermocouple input and output terminals.
These terminals accept a miniature polarized
thermocouple plug with flat in-line blades
spaced 7.9 mm (0.312 in.) center to center.
5 4W RTD/O INPUT Four wire RTD and Ohms input terminals. See
notes 1 and 3 below.
6
Pressure module input connector.

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Note 1: These terminal binding posts are made of a special copper alloy to reduce
thermal EMF's. They support the use of either discreet wires or standard
banana plugs, and the HI/LO pairs are spaced for standard dual banana
plugs.
Note 2: Caution. Do not exceed a maximum of 100 volts to chassis ground.
Note 3: Caution. Do not exceed a maximum of 20 volts to chassis ground.
2.3 Primary Input/Output Display Controls
Figure 3 describes the primary input/output display and controls in detail.
Figure 3 - Primary Input/Output Display and Controls

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Item Name Description
1 Display A 2 line, 16 character, display providing all
visual user feedback for the primary output and
input operations. See section 2.6 for layout
details, and section 2.7 for possible error
messages.
2 Numeric and secondary
function keys
Output value data entry keys. Secondary
function selection per the text printed above the
numeric key. Press the key followed by
the numeric key to select the function.
OUTPUT Change RTD/Ohms or Thermocouple to output
mode.
INPUT Change RTD/Ohms or Thermocouple to input
mode.
ZERO Zero the input for Pressure, Thermocouple
millivolts, or RTD ohms.
SETUP Adjust the LCD Contrast, LCD Backlight, and
Remote Interface Configuration as described in
section 8.
CJC Select internal or external cold junction
compensation for Thermocouple temperature
measurements. When external compensation is
selected, XCJC is displayed at the start of the
second line.
°C/°F Select Centigrade or Fahrenheit units for RTD
and Thermocouple temperature measurements.
SET Set a new value for a preset output setpoint as
described in section 6.
RECALL Recall a preset output setpoint as described in
section 6.
AUTOSET Initiate automatic stepping of preset output
setpoints as described in section 6.
RNG LOCK Select Auto-range or Range Lock for voltage
output.
7
8
9
4
5
6
1
2
3
+/-

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LOCAL Press to regain local control of the AMC910 after
the remote command REMOTE has been
received; in this case all keys except this one
are ignored. When the remote command
LOCKOUT has been received, all keys are
ignored including this one and the remote
command LOCAL must be received to regain
local control.
EXP Press during entry of a RTD custom curve
coefficient to begin entering the exponent.
3 Function keys
Select DC voltage or current output mode, and
toggle between them.
Select Thermocouple or RTD/Ohms input/output
mode, and toggle between them.
Select Pressure input mode.
In Thermocouple mode, cycle through the
thermocouple types, including millivolts. In
RTD/Ohms mode, cycle through the RTD types,
including ohmsIn Pressure mode, cycle through
the pressure units.
For all output modes, except Thermocouple,
toggle between Standby and Operate modes. In
Standby mode, any change to the output value
in the display is not driven to the terminals until
the Operate mode is selected. In Operate mode,
each change to the output value in the display is
driven to the terminals immediately, except for
DC voltages greater then 30V when the mode
reverts to Standby automatically for safety
reasons.
Changes the calibrator output or parameter to
the numeric value typed into the keypad.
Clears a partial keypad entry and reverts the
calibrator output or parameter to its last known
value.
0

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Prepares for selection of a secondary function
via the numeric keypad according to the text
above each key. The display changes to SHIFT
ENABLED until a numeric key is pressed. To
cancel the selection press again.
4 Cursor controls Press or to position the cursor under the
digit in an output value that is to be incremented
or decremented. Press to increment the
digit in the output value where the cursor is
positioned.
Press to decrement the digit in the output
value where the cursor is positioned.
The and keys are also used to adjust
LCD Contrast level, LCD Backlight level, and
Remote Interface Configuration selections as
described in section 8.
2.3 Isolated Input Display, Controls and Terminals
Figure 4 describes the isolated input display, controls, and terminals in
detail.
Figure 4 - Isolated Input Display, Controls, and Terminals

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Item Name Description
1 Display A 2 line, 16 character, display providing all
visual user feedback for the isolated input
operations. See section 2.6 for layout details,
and section 2.7 for possible error messages.
2 Function keys
Select DC voltage and current input mode.
Subsequent presses of this key cycle through
the ranges: 10V, 100V, and 50mA.
When using 50mA mode to test a 2 wire loop
powered transmitter that is disconnected from
its wiring, press this key to activate an internal
24V power supply in series with the current
measuring circuit. Press the key again to
deactivate the 24V supply.
When using 50mA mode to test a HART
configuration device, press this key to activate
an internal 250 ohm resistor in series. Press the
key again to deactivate the resistor. Note that
activating this resistor drops the maximum load
driving capability from 1000 ohms at 20mA to
750 ohms at 20mA.
Select Pressure input mode. Subsequent
presses of this key cycle through the pressure
units. Pressure input mode uses the pressure
module connector on the primary input/output
side. Both sides may be selected to pressure
mode simultaneously and can be set to display
the same pressure measurement in different
units if desired.
3 Input Terminals Common input terminals for DC voltage and
current. See notes 1 and 2 below.
Note 1:These terminal binding posts are made of a special copper alloy to reduce
thermal EMF's. They support the use of either discreet wires or standard
banana plugs, and the HI/LO pairs are spaced for standard dual banana
plugs.
Note 2:Caution. Do not exceed a maximum of 100 volts to chassis ground.

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2.5 Rear Panel
Figure 5 describes the rear panel layout.
Figure 5 - Rear Panel
Item Description
1 RS-232 9 pin connector for remote control of the AMC910 via any
computer's serial interface.
2 GPIB IEEE 488.2 connector for remote control of the AMC910 via a GPIB
bus.
3 Service port for updating the AMC910 firmware.
4 Chassis ground terminal internally connected to the ground prong of the
AC power inlet.
Warning
To avoid shock hazard, connect the factory supplied 3 conductor
power cord to a properly grounded power outlet. Do not use a 2
conductor adapter or extension cord as this will break the
protective ground.
Use the chassis ground terminal for a protective ground wire if
there is any question about the grounding through the 3
conductor power cord.
5 Standard IEC AC power inlet for 120/240 VAC
6 Main power on/off switch.
7 Power line voltage selector and fuse compartment. See section 11 for
instructions on changing the line voltage selector and changing fuses.
Warning
To prevent electrical shock, only remove the line voltage selector
and fuse holder when the power cord is removed.

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2.6 Display Layouts
a) Primary Voltage and Current Display
Figure 6 - Primary Voltage and Current Display Layout
Item Description
1 Operating mode:
AUTO: Auto-range
LOCK: Range lock
rem remote operation
SP# Automatic stepping of preset setpoints
2 Present range and output mode
3 Output state:
Stby Standby, terminals inactive
Opr Operating, terminals are active with output per the
displayed value
4 Output value
5 Units

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b) Primary Thermocouple and RTD Display
Figure 7 - Primary Thermocouple and RTD Display Layout
Item Description
1 Output mode selection: RTD, TC, or rem for remote operation
2 Input or output selection
3 RTD or thermocouple type selection
4 Output state for RTD outputs:
Stby Standby, terminals inactive
Opr Operating, terminals are active with output per the
displayed value
Blank for RTD inputs
Cold junction selection for thermocouple inputs and outputs:
XCJC External cold junction compensation; the AMC910
automatic cold junction
compensation is turned off, i.e. 0 mV is always 0°C
Blank Internal cold junction compensation; the AMC910
automatically measures
the ambient temperature at the thermocouple
terminals and compensates the measurement, i.e. 0
mV is ambient temperature
5 Input or output value
6 Units

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c) Primary and Isolated Pressure Display
Figure 8 - Primary and Isolated Pressure Display Layout
Item Description
1 Units On the primary display, rem appears to the left during remote
operation
2 Input value