Technical Data
Original Instructions
1443 Series Accelerometers Specifications
Catalog Numbers 1443-ACC-GP series, 1443-ACC-VO series, 1443-ACC-IS series, 1443-ACC-AT s e r i e s , 1 4 4 3 - A C C - L F - T ,
1443-ACC-HF-T
Top ic Pag e
Sensor Selection Process 4
Shield Wire Isolation Sensor and Cable Selection 8
Sensor Quick Reference 11
Metric and Imperial Mounting 13
Sensors 14
Sensor Certifications and Approvals 42
Accessories 44
Sensor Cross-reference - 1443 Series (New) to 9000 Series (Old) 56
Additional Resources 59
Summary of Changes
Top ic Pa ge
Added new topic ‘API-670 compliance’ 10
Added Important for sensors manufactured earlier than October 2017 10
Added Hall-effect Speed Sensor information to quick reference section 13, 42
Sensitivity changed from (±10%) to (±5%) global change 14
Updated footnote for sensitivity tolerance 14
Updated all Sensor tables frequency ranges with new ranges 14
Exception for sensor compliance for six Accelerometers 16
1443 Series Accelerometers Specifications
Permanently Installed
Accelerometers
Sensor Cables to Dynamix™ 1444
Permanently Installed
Accelerometers
Sensor Cables
Switch Box
Sensor to Data Collector Cable
Dynamix™ 2500
Rockwell Automation® 1443 Series Accelerometers are general-purpose sensors that are used to measure vibration on
industrial machinery. The 1443 Series family also includes sensors with these varied capabilities:
• Low frequency, as low as 0.1 Hz or 6 cpm
• High frequency, up to 20 kHz or 1200 kcpm
• Velocity output, internal integrator
• Hazardous area approved
• Dual accelerometer and temperature output
Typical Vibration Measurement Systems
Accelerometers are either permanently mounted or carried from point-to-point in a route-based measurement or analysis
scheme. The entire measurement system, however, can take on various forms, depending on sensor type and the goal of
the monitoring program. The following examples illustrate vibration measurement and monitor systems.
Figure 1 - Dynamix™ System and Permanently Installed Accelerometers
Figure 2 - Portable Data Collector and Permanently Installed Accelerometers
2 Rockwell Automation Publication 1443-TD001D-EN-P - March 2019
Figure 3 - Portable Data Collector and Accelerometer
Sensor to Dynamix™ 2500
Precision Industrial
Accelerometer with
Magnetic Mounting
Dynamix™ 2500
IMPORTANT All specifications are at room temperature unless otherwise specified.
For certification information, see Declaration of Conformance at rok.auto/certifications
Optional versions have identical specifications and accessories as listed for standard model except where noted. Multiple
options can be used.
1443 Series Accelerometers Specifications
.
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 3
1443 Series Accelerometers Specifications
Sensor Selection Process
This flowchart illustrates the process that you can follow to select the appropriate sensor for your application.
Figure 4 - Sensor Selection Flowchart
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1443 Series Accelerometers Specifications
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 5
1443 Series Accelerometers Specifications
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1443 Series Accelerometers Specifications
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 7
1443 Series Accelerometers Specifications
Shield Wire Isolation Sensor and Cable Selection
The 1443 Series include sensor and cable solutions that isolate the shield wire from the sensor or ground the shield wire
to the sensor. For standard sensors, select either shield isolated or shield grounded cables. When a sensor with an integral
cable is required, select a sensor with the shield wire isolated from the sensor or that has its shield wire grounded to the
sensor.
When a shield to sensor isolated solution is required, which is the normal recommended method:
• If a sensor without an integral cable is required, use an accessory cable that has its shield wire isolated from the
sensor connector. Select a cable with ‘IBC’ in its catalog number, for example, 1443-CBL-MS2IBC-32S.
• If a sensor with an integral cable is required, use a sensor with its shield wire isolated from the sensor. Select a
sensor with ‘SI’ in its catalog number, for example, 1443-ACC-GP-T16-SI.
When a shield grounded sensor is required:
• If a sensor without an integral cable is required, use an accessory cable that has its shield wire that is grounded to
the sensor connector. Select a cable with ‘GBC’ in its catalog number, for example, 1443-CBL-MS2GBC-16S.
• If a sensor with an integral cable is required, use a sensor with its shield wire that is grounded to sensor case. Select
a sensor with ‘SC’ in its catalog number, for example, 1443-ACC-GP-T16-SC.
The recommended solution is to connect the shield at the measurement system and leave it isolated at the sensor end. Use
IBC version cables or ‘SI’ version sensors when an integral cable sensor is required. However, when EMI problems are
present or expected, then a shield case grounded solution can prove to be a better design.
When signal noise or interference is a problem or concern, you must understand the source of the problem to resolve it.
Noise can be introduced into signals from accelerometers through these common phenomena:
• Electromagnetic Interference (EMI)
EMI is the introduction of unwanted signals into an electronic device from electromagnetic fields that another
electronic device generated. Televisions, radars, vehicles, variable-frequency drives (VFDs), and other electronic
devices can produce high powered electromagnetic fields. EMI can be introduced into the measurement system via
the signal wiring when that wiring acts as an antenna, which occurs when one end of the wire is ungrounded.
When EMI occurs, it typically results in signals being introduced at discrete frequencies that are related to the
signal source. The impact on measurements is dependent on the magnitude and specific frequency of the signal
that is induced. This occurrence is relative to the measurement systems design signal magnitude and frequency
range and the expected signals that are intended to be measured.
•Ground Loops
In electronics, a ground loop is caused when a device has multiple paths for electricity to flow to ground. In a
measurement system, this scenario commonly occurs when a signal wire is grounded at both ends, with each end
having another potential (resistance) to ground.
The key for accelerometer measurement systems is knowing if the machine case, or bearing housing, to which the
sensor is attached, is grounded or not. While a new machine installation can be isolated, changes are possible over
the life of the machine as wear occurs, maintenance is performed, and other changes are made.
Regardless the source, when present these signals or noise can result in significant error in measurements. The result can
be random and inexplicable machine alarms and trips, erroneous condition assessment / diagnosis, and possible damage
to the instrumentation. If the source of the noise is clear, and there is only one concern, then the corrective action is clear,
depending on the source of the problem, try the following:
8 Rockwell Automation Publication 1443-TD001D-EN-P - March 2019
1443 Series Accelerometers Specifications
EMI
Ground the shield at both ends of the cable.
• If you tie the shield to the sensor case only, it creates a ground if the structure that the sensor is mounted on is
grounded. If the bearing housing or the machine is isolated from ground, then when you connect the shield to the
case of the sensor cannot ground the shield.
• If the ground potential through the sensor is different than ground potential through the instrumentation ground,
then a ground loop is created. The ground loop that is created can be a worse condition than the EMI problem.
• In most cases, grounding the shield at both ends must be the last resort because ground loop problems can result.
The ground loop problems can create more significant problems than the EMI issue. Make sure that the following
common wiring solutions are considered:
– Use high quality, well shielded, twisted wire cable.
– Route cable runs to avoid obvious / strong sources of EMI such as radio transmission towers, generators,
and transformers.
– If cables are routed through a J-box, make sure that shields are properly connected.
– When routing cables, make sure to cross AC power lines at right angles. Approach AC motors from a right
angle to the motor shaft and do not route wiring alongside a motor.
– At the monitor, connect the shield wires directly to ground - so do not ground it through the instrument.
Ground Loops
Isolate the shield at one end of the cable.
• In most cases, make sure that the shield is not connected to the sensor.
• A special cable or a custom made cable is required for accelerometers with two or three pin
MIL-C-5015 connectors.
• For existing installations, do not assume that the shield is not tied to the sensor case. While not connected to the
sensor case is normal practice in most locations, it doesn't mean that it is that way. Also, if the shield is connected to
the sensor case, it’s possible that the structure the sensor is mounted on has changed in respect to the ground for
other reasons.
• If continuous or intermittent EMI (RFI) sources are present, then when you isolate one end of the shield it creates
an antenna that can result in EMI (RFI) noise problems. An EMI (RFI) issue can be a worse condition than the
ground loop problem.
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 9
1443 Series Accelerometers Specifications
API-670 Compliance
All 1443 Series sensors are compliant to the American Petroleum Institute (API) Standard 670, 5th Edition, November
2014, with the following exceptions:
• Side exit sensors have an outside diameter greater than 25 mm (1 in.) as specified by API-670 paragraph 5.2.1.5.
• Calibration frequency is 80 Hz, in accordance with ISO standard 9001-2008, rather than 100 Hz as specified in
API-670 Table 1 note f.
• Only the standard 16 ft cables are nominally 5 m (200 in.) as specified by API-670 paragraph 5.2.2.2.
• Cables do not ship with loose heat-shrink tubing for labeling, as specified by API-670 paragraph 5.2.2.3.
Perhaps the most important attribute of the sensor, per the standard, is its accuracy. The standard specifies accuracy
requirements for accelerometers in the following table.
Table 1 - Machinery Protection System Accuracy Requirements
Accelerometers and Accelerometer Extension Cables
Temperature Accuracy Requirements as a Function of Temperature
Test Range Operating / Storage Range Within Testing Range Outside Testing Range but Within Operating Range
20...30 °C
(68...86 °F)
(1) During the testing o f the accelerometers, the parameter under test is the only parameter that is varied. All other parameters remain constant.
(2) Conditions of test at any one temperature within the testing range, at any single frequency that is not specified but is within the specified frequency range of the transducer.
(3) Frequency response testing conditions, at any one temperature within the testing range, at an excitation amplitude that is not specified but is within the specified amplitude range of the transducer.
(4) Principal axis sensitivity testing conditions (test range), at any one temperature within the testing range set at 100 Hz, at an excitation amplitude that is not specified but is within the specified
amplitude range of the transducer. Operating range at any one temperature within the operating range, at 100 Hz, at an excitation amplitude that is not specified but is within the specified amplitude
range of the transducer.
–55...+120 °C
(–65...+250 °F)
Principal axis sensitivity
Amplitude linearity: 1% from 0.1...50 g peak
Frequency response
referenced to the actual measured principal axis
(4)
sensitivity
(4)
: 100 mV/g ± 5%
(3)
: ±3 dB from 10 Hz to 10 kHz,
(2)
(1)
Principal axis sensitivity
(4)
: 100 mV/g ± 20%
The 1443 Series sensor is ± 5% across the entire operating range of the sensor. This sensor range significantly exceeds the
requirement of only testing within the temperature range. Among sensors advertised as API compliant, this provides a
much more consistent and accurate measurement than most sensors compared to the requirement of just ±20%.
IMPORTANT Sensors manufactured earlier than October 2017 can have sensitivity variances of up to ± 10% across the operating range.
10 Rockwell Automation Publication 1443-TD001D-EN-P - March 2019
1443 Series Accelerometers Specifications
Sensor Quick Reference
General-purpose Accelerometers
General-purpose industrial accelerometers are recommended for permanent installation onto machinery or route-based
vibration data collection in predictive maintenance and condition-monitoring applications.
Table 2 - General-purpose Accelerometers
Purpose Cat. No Features Page
General-purpose Accelerometer 1443-ACC-GP-T • 100 mV/g
1443-ACC-GP-S • 100 mV/g
General-purpose Accelerometer
(with Integral Cable)
(1) S ensors with the shield wire grounded to the case are non-standard. See Shield Wire Isolation Sensor and Cable Selection on page 8 before ordering.
1443-ACC-GP-T16-SI • Integral ~5 m (16 ft) Cable
1443-ACC-GP-T32-SI • Integral ~10 m (32 ft) Cable
1443-ACC-GP-T16-SC • Integral ~5 m (16 ft) Cable
1443-ACC-GP-T32-SC • Integral ~10 m (32 ft) Cable
• 0.8…19 kHz
•Top Exit
• 0.2…15 kHz
• Side Exit
• 100 mV/g
• 0.8…15 kHz
•Top Exit
• 100 mV/g
• 0.8…15 kHz
•Top Exit
• Shield Case Grounded Cable
• 100 mV/g
• 0.8…15 kHz
•Top Exit
• Shield Case Grounded Cable
• 100 mV/g
• 0.8…15 kHz
•Top Exit
(1)
(1)
14
16
18
20
22
24
Sensors with Integral Cables
Included in the list of 1443 Series general-purpose Accelerometers are variants of the sensor that include integral 4.8 m
(16 ft) and 9.7 m (32 ft) cables. Sensors with an integrated cable are useful in wet or dirty (high particulate) areas.
Low Frequency Accelerometer
The accelerometer combines low-frequency response with high-output sensitivity to obtain the resolution characteristics
and output signal levels necessary for low-frequency measurements and analysis.
Table 3 - Low Frequency Accelerometer
Purpose Cat. No Features Page
Low Frequency Accelerometer 1443-ACC-LF-T • 500 mV/g
• 1.5…10 kHz (5%)
• 0.1…15 kHz (3db)
•Top Exit
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 11
26
1443 Series Accelerometers Specifications
High Frequency Accelerometer
When you test, monitor vibrations, and analyze the frequency of machinery where frequencies greater than
approximately 15 kHz, the frequencies must be measured.
Table 4 - High Frequency Accelerometer
Purpose Cat. No Features Page
High Frequency Accelerometer 1443-ACC-HF-T • 50 mV/g
• 0.8…20 kHz
•Top exit
28
Specialty Accelerometers
These sensors are available for applications that require velocity output and temperature output from the sensor.
•Velocity Output
• Acceleration and Temperature
Table 5 - Specialty Accelerometers
Purpose Cat. No Features Page
Velocity Output Accelerometer 1443-ACC-VO-T Output is integrated to velocity
100 mV/ips
2…6 kHz
Output ±50 in/s
Top Exit
Velocity Output Accelerometer 1443-ACC-VO-S Output is integrated to velocit y
100 mV/ips
2…6 kHz
Output ±50 in/s
Side Exit
Combination Acceleration and Temperature 1443-ACC-AT-T 100 mV/g
0.8…15 kHz
10 mV/°C
Top Exit
Combination Acceleration and Temperature 1443-ACC-AT-S 100 mV/g
0.8…15 kHz
10 mV/°C
Side Exit
30
32
34
36
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1443 Series Accelerometers Specifications
Intrinsically Safe Accelerometers
Intrinsically safe sensors meet additional requirements for hazardous environments. See specification tables for a list of
certifications.
Table 6 - Intrinsically Safe Accelerometers
Purpose Cat. No Features Page
Hazardous Area Accelerometer 1443-ACC-IS-T • 100 mV/g
• 0.8…15 kHz
•Top Exit
1443-ACC-IS-S • 100 mV/g
• 0.8…15 kHz
• Side Exit
38
40
Hall-effect Speed Sensor
Catalog number EK-44395 is an Airpax Model H1512-005 hall-effect sensor that is designed to generate a steady pulse
train in response to movement of a target surface.
The EK-44395 Hall-effect Speed Sensor outputs a TTL signal that is suitable for use as a direct speed input to the
Dynamix™ 1444-DYN04-01RA monitor. See Ta b l e 2 1
on page 42.
Metric and Imperial Mounting
Sensor mounting accessories are included with the accelerometer, see Supplied Accessories in the specification tables.
Options exist to mount the sensor on the machine end, in either in Metric or Imperial units, as denoted by the ‘Mounting
Thread’ attribute in the following tables for each sensor.
Top exit sensors have a 1/4-28 UNF female thread on the sensor end. Two studs are included, both with one 1/4-28
UNF male end (for the sensor). The other end has either an M8 x 1.25 mm male thread or a 1/4-28 UNF male thread for
mounting on the machine.
Side exit sensors have a through hole. Bolts are included with a machine mounting thread of either M6 x 1.00 mm male
or 1/4-28 UNF male.
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 13
1443 Series Accelerometers Specifications
Sensors
1443-ACC-GP-T Accelerometer
General-purpose industrial accelerometers are recommended for permanent installation onto machinery or route-based
vibration data collection in predictive maintenance and condition-monitoring applications.
Table 7 - 1443-ACC-GPT-T Accelerometer Specifications
Attribute Value
Performance
Sensitivity (±5%)
Measurement range ±785 m/s
Frequency range (±5%)
Frequency range (±3 dB) 0.4…15 kHz 24…900,000 cpm
Resonant frequency, typical 28 kHz 1680 kcpm
Broadband resolution (1…10,000 Hz), typical 2943
Non-linearity
Transverse sensitivity < 5% < 5%
Environmental
Overload limit (shock) 49,050 m/s
Temperature range -55…+140 °C -67…+284 °F
Enclosure Rating IP66 to 68, depending upon the cable assembly used. IP66 to 68, depending upon the cable assembly used.
Electrical
Settling time (within 1% of bias) < 2.0 s < 2.0 s
Discharge time constant ≥ 0.5 s ≥ 0.5 s
Excitation voltage 18…28V DC 18…28V DC
Constant current excitation 2...20 mA 2...20 mA
Output impedance <150 Ω <150 Ω
Output bias voltage 10…12V DC 10…12V DC
Electrical isolation (case) > 10
Electrical protection 500V 500V
Physical
Size (hex x height) 19 x 36 mm 3/4 x 1.42 in.
Weight, approx. 48 g 1.7 oz
Mounting thread
Mounting torque 8 N•m 6 ft•lb
Sensing element Ceramic
Sensing geometry Shear
Housing material Stainless Steel
Sealing Welded hermetic
Electrical connector Two-pin-MIL-C-5015
Electrical connector position Top
Supplied Accessories
(1)
(2)
(3)
(4)
(5)
10.2 mV/(m/s2)100 mV/g
2
±80 g
1.5…10 kHz 90…600,000 cpm
2
μm/s
300 μg
±1% ±1%
2
pk 5000 g pk
10
Ω> 10
10
Ω
M8 x 1.25 mm male 1/4-28 UNF male
1443-STD-0-0
1443-STD-0-M8
Calibration Certificate
(1) S ensitivity tolerance is across the operating temperature range. Sensor is compliant to API Standard 670, 5th Edition. Conversion factor 1 g = 9.81 m/s2.
(2) 1 Hz = 60 cpm (cycles per minute).
(3) Zero-base d, least-squares, straight-line method.
(4) 1/4-28 UNF has no equivalent in metric units.
(5) Calibration @80 Hz per ISO 9001-200 83
14 Rockwell Automation Publication 1443-TD001D-EN-P - March 2019
Figure 5 - Sensitivity Change vs. Frequency for the Accelerometer (Same for All 1443 Series)
in.
Figure 6 - 1443-ACC-GP-T Measurements
1443 Series Accelerometers Specifications
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 15
1443 Series Accelerometers Specifications
1443-ACC-GP-S Accelerometer
General-purpose industrial accelerometers are recommended for permanent installation onto machinery or route-based
vibration data collection in predictive maintenance and condition-monitoring applications.
Table 8 - 1443-ACC-GP-S Accelerometer Specifications
Attribute Value
Performance
Sensitivity (±5%)
(1)
Measurement range ±785 m/s
Frequency range (±5%)
(2)
Frequency range (±3 dB) 0.4…15 kHz 24…900,000 cpm
Resonant frequency, typical 22 kHz 1500 kcpm
Broadband resolution (1…10,000 Hz), typical 491
Non-linearity
(3)
Transverse sensitivity < 5% < 5%
Environmental
Overload limit (shock) 49,050 m/s
Temperature range -55…+140 °C -67…+284 °F
Enclosure rating IP66 to 68, depending upon the cable assembly used. IP66 to 68, depending upon the cable assembly used.
Electrical
Settling time (within 1% of bias) < 2.0 s < 2.0 s
Discharge time constant ≥ 0.5 s ≥ 0.5 s
Excitation voltage 18…28V DC 18…28V DC
Constant current excitation 2…20 mA 2…20 mA
Output impedance <150 Ω <150 Ω
Output bias voltage 10…12V DC 10…12V DC
Electrical isolation (case) > 10
Electrical protection 500V 500V
Physical
Size (hex x height) 25 x 30 x 35 mm 1 x 1.18 x 1.38 in.
Weight, approx. 170 g 6.0 oz
Mounting thread
(4)
Mounting torque 8 N•m 6 ft•lb
Sensing element Ceramic
Sensing geometry Compression
Housing material Stainless Steel
Sealing Welded hermetic
Electrical connector Two-pin-MIL-C-5015
Electrical connector position Side
Supplied Accessories
(5)
10.2 mV/(m/s2) 100 mV/g
2
±80 g
1.5…10 kHz 90…600,000 cpm
2
μm/s
50 μg
±1% ±1%
2
pk 5000 g pk
10
Ω> 10
10
Ω
M6 x 1 mm male 1/4-28 UNF male
1443-BLT-125-0
1443-BLT-125-M6
ICS-3 3 pt calibration
(1) S ensitivity tolerance is across the operating temperature range. Conversion factor 1 g = 9.81 m/s2.
(2) 1 Hz = 60 cpm (cycles per minute).
(3) Zero-based, le ast-squares, straight-line method.
(4) 1/4-28 UNF has no equivalent in metric units.
(5) ICS-3 3 pt calibration 10 Hz, 100 Hz, 1 kHz.
16 Rockwell Automation Publication 1443-TD001D-EN-P - March 2019
Figure 7 - Sensitivity Change vs. Frequency for the Accelerometer (Same for All 1443 Series)
1.46 in.
Figure 8 - 1443-ACC-GP-S Accelerometer
1443 Series Accelerometers Specifications
Rockwell Automation Publication 1443-TD001D-EN-P - March 2019 17
1443 Series Accelerometers Specifications
1443-ACC-GP-T16-SI Accelerometer
General-purpose industrial accelerometers are recommended for permanent installation onto machinery or route-based
vibration data collection in predictive maintenance and condition-monitoring applications.
Table 9 - 1443-ACC-GP-T16-SI Accelerometer Specifications
Attribute Value
Performance
Sensitivity (±5%)
Measurement range ±785 m/s
Frequency range (±5%)
Frequency range (±3 dB) 0.4…15 kHz 24…900,000 cpm
Resonant frequency, typical 28 kHz 1680 kcpm
Broadband resolution (1…10,000 Hz), typical 2943
Non-linearity
Transverse sensitivity < 5% < 5%
Environmental
Overload limit (shock) 49,050 m/s
Temperature range -55…+140 °C -67…+284 °F
Enclosure rating IP66 to 68, depending upon the cable assembly used. IP66 to 68, depending upon the cable assembly used.
Electrical
Settling time (within 1% of bias) < 2.0 s < 2.0 s
Discharge time constant ≥ 0.5 s ≥ 0.5 s
Excitation voltage 18…28V DC 18…28V DC
Constant current excitation 0.5…8 mA 0.5…8 mA
Output impedance <150 Ω <150 Ω
Output bias voltage 10…12V DC 10…12V DC
Electrical isolation (case) > 10
Electrical protection 500V 500V
Physical
Size (hex x height) 19 x 36 mm 3/4 x 1.42 in.
Weight, approx. 48 g 1.7 oz
Mounting thread
Mounting torque 8 N•m 6 ft•lb
Sensing element Ceramic
Sensing geometry Compression
Housing material Stainless Steel
Sealing Welded hermetic
Electrical connector Two-pin MIL-C-5015
Electrical connector position Top
Cable Length 5 m 16 ft
Cable Type Shielded Silicone
Supplied Accessories
(1)
(2)
(3)
(4)
(5)
10.2 mV/(m/s2) 100 mV/g
2
±80 g
1.2…10 kHz 72…600,000 cpm
2
μm/s
300 μg
±1% ±1%
2
pk 5000 g pk
10
Ω> 10
10
Ω
M8 x 1.25 mm male 1/4-28 UNF male
1443-STD-0-0
1443-STD-0-M8
ICS-3 3 pt calibration
(1) S ensitivity tolerance is across the operating temperature range. Sensor is compliant to API Standard 670, 5th Edition. Conversion factor 1 g = 9.81 m/s2.
(2) 1 Hz = 60 cpm (cycles per minute).
(3) Zero-based, le ast-squares, straight-line method.
18 Rockwell Automation Publication 1443-TD001D-EN-P - March 2019
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