AMETEK APMi Series Intrinsically Safe Advanced Pressure Module User Manual
- June 4, 2024
- AMETEK
Table of Contents
APM Series
Operation Manual
Overview
INTRODUCTION
The Crystal APM series of intrinsically safe pressure modules allow you to add
additional pressure measurement capability to your HPC50 pressure calibrator.
The APM uses the same reliable, high accuracy, digital temperature compensated
technology found in Crystal products, housed in a rugged enclosure with a
selectable-length cable to connect to your HPC50 calibrator. Two APM modules
can be connected to a single HPC50 calibrator.
Note: Currently, the HPC50 is the only Crystal calibrator supported by
the APMi pressure module.
Note: This manual includes information on the APMi modules only. For
details on the operation of the HPC50 Series, please refer to the User Manual.
What’s Included
Each unit includes an APMi pressure module, an interface cable of your choice
(1, 3, or 10 meters), a setting of your choice (1/4 NPT Male, 1/4 BSP Male, or
M20 x
1.5 Male), an ISO 17025 Accredited Calibration Certificate (NIST traceable),
and AMETEK product CD. Crystal Engineering calibration facilities are A2LA
accredited, (#2601.01) which is internationally recognized by ILAC.
ADVANCED PRESSURE MODULE APMi INSTRUCTIONS
Pressure Connection
Crystal CPF
System: Medium Pressure Female (MPF) (1/4” medium pressure tube system with
7/16-20 threads). See our CPF Brochure for further information.
U.S. Patent No. 8,794,677
CPF o-ring size and material: AS568A-012, Viton 80 durometer (P/N 3981).
For most applications, CPF Fittings can be hand tightened for use up to 10 000
psi / 700 bar / 70 MPa (no tools required). Wrench tightening is recommended
(to achieve a metal-to-metal cone seal) for applications where chemical
compatibility of the process uid and the o-ring are a concern, or for
pressures above 10 000 psi / 700 bar / 70 MPa. We recommend a tightening
torque of 120 in-lbs ±20 in-lbs. Please note this is only a fraction of the
typical torque required to seal a 1/4” NPT fitting. If a torque wrench isn’t
practical to use, the settings can be assembled as follows: Hand tightens
thing fully until the cone has bottomed out. Tighten an additional 20º using a
wrench. Apply a small amount of media-compatible lubricant to the gland
threads and male cone to increase thing life, reduce the likelihood of
galling, and promote sealing.
! WARNING: Pressurized hoses and associated equipment are potentially
dangerous. Slowly bleed off pressure from the system being pressurized prior
to connecting or disconnecting the Crystal APM.
Measuring Vacuum
All ranges of the APM can be used to measure moderate vacuum. Ranges 300 psi /
30 bar / 3 MPa and below are calibrated for vacuum use.
When measuring pressure less than ambient barometric conditions, a minus sign
(-) will appear.
! CAUTION: The APM is not recommended for continuous use at high vacuum.
Over pressure Conditions
The APM will read pressure up to approximately 110% of the rated pressure
range. The HPC50 Calibrator will display an overpressure warning. For example,
above 110% of the range, “OL” will display on the HPC50, indicating an
Overload Alarm. The zero function does not act when the “OL” is displayed to
indicate overpressure. So depending on the zero value, it is possible that the
display will indicate “OL” without the maximum pressure being displayed. For
instance, if a 100 psi APMi is zeroed when 30 psi is being applied, it will
indicate that the overpressure condition has been reached at 80 psi. (i.e.,
110% x 100 psi – 30 psi = 80 psi).
Overpressure can affect accuracy, but the effect is only temporary unless the
sensor has been damaged. See Specifications for maximum allowable overpressure
ratings.
Specifications
ACCURACY
psi (Gauge Pressure)
-
18 to 28° C
0 to 30% of Range: . . . . . . . . . . . . . . . ±(0.01% of Full Scale)
30 to 110% of Range: . . . . . . . . . . . . ±(0.035% of Reading)
Vacuum* : . . . . . . . . . . . . . . . . . . . . . . . ±(0.05% of Full Scale**) -
20 to 50° C
0 to 30% of Range: . . . . . . . . . . . . . . . ±(0.015% of Full Scale)
30 to 110% of Range: . . . . . . . . . . . . ±(0.050% of Reading)
Vacuum* : . . . . . . . . . . . . . . . . . . . . . . . ±(0.05% of Full Scale**) -
Applies to 300 psi / 30 bar / 3 MPa and lower ranges only.
Vacuum Range = -14.5 psi / -1.0 bar / -1MPa.
Full Scale is the numerical value of the positive pressure range.
psi (Absolute Pressure with BARO Option)
All absolute accuracies are equivalent to the gauge pressure accuracies, except as noted below.
15 psi / 1 bar / 100 kPa Range: . . . . . Gauge Accuracy + 0.005 psi
30 psi / 3 bar / 300 kPa Range: . . . . . Gauge Accuracy + 0.005 psi
100 psi / 10 bar / 1MPa Range: . . . . . Gauge Accuracy + 0.002 psi
Includes all effects of linearity, hysteresis, repeatability, temperature, and stability for one year.
Exposure to environmental extremes of temperature, shock, and/or vibration may warrant a more frequent recertification period.
APM modules must be exercised and re-zeroed whenever exposed to significant changes in environmental conditions to achieve these specifications. To exercise a module, cycle the module between zero (ambient barometric pressure) and the pressure of interest. A properly exercised module will return to a zero reading (or return to the same
ambient barometric reading).
ACCURACY CONTINUED
All models indicate vacuum, but vacuum specification applies only where specified.
Not recommended for continuous use at high vacuum. Refer to the XP2i-DP data sheet for gauges that are intended for continuous high vacuum use.
The BARO option for the HPC50 Series allows you to toggle between the gauge and absolute pressure using the same APM module.
SENSOR
Wetted Materials. . . . . . . . . . . . .(wrench tight) 316 stainless steel (finger tight) 316 stainless steel and Viton® with internal o-ring (15 psi / 1 bar / 100 kPa) 316 stainless steel and Viton® Diaphragm Seal
Fluid . . . . . . . .Silicone Oil
Connection . . . . . . . . . . . . . . . . . .Crystal CPF Female
All welded, with a permanently lled diaphragm seal.
Metal-to-metal cone seal; O-ring can be removed if necessary. A 1/4″ male NPT adapter is included unless BSP or M20. 1/4″ medium pressure tube system is compatible with HIP LM4 and LF4 Series, Autoclave Engr SF250CX Male and Female Series.
OUTPUT
Pressure Resolution . . . . . . . . . .up to 6 digits
Display Update . . . . . . . . . . . . . .up to 10 per second
Pressure resolution and display update are the maximum values available. The resolution of your Crystal device may be different.
PRESSURE OVERLOAD
Overload Alarm . . . . . . . . . . . . . .“+OL” in display at 110% F.S.
OPERATING TEMPERATURE
Temperature Range . . . . . . . . . .-20 to 50° C (-4 to 122° F) < 95% RH, non-condensing. No change in accuracy over an operating temperature range, except as noted in the accuracy specifications.
APM must be zeroed to achieve rated specifications. Applies to all modules.
STORAGE TEMPERATURE
Temperature Range . . . . . . . . . .-40 to 75° C (-40 to 167° F)
ENCLOSURE
** Dimensions . . . . . . . . . . . . . . . . . .2.9 x 1.1 in (74.0 x 27.0 mm)
Weight . . . . . . . . . . . . . . . . . . . . . .0.39 lbs (176.0 g)
ACCURACIES, RANGES, AND RESOLUTIONS
The resolutions shown are the maximum resolutions available. The resolution of your Crystal device may be different.
- CPF adaptor thing is not included. 1/4″ medium pressure tube system is compatible with HIP LM4 and LF4 Series, Autoclave Engr SF250CX Male and Female Series. See our CPF data sheet for additional adapter things.
Ordering Information
| Model | P/N | Fitting | Interface Cable Length |
|---|---|---|---|
| APM |
_
| _| _
| | NPT ………omit| 1 m / 3.3 ft ……(omit)
| | G 1/4 B ……-BSP| 3 m / 10 ft ……….3M
| | M20x1.5 …-M20| 10 m / 33 ft ……..10M
SAMPLE PART NUMBERS
APMi30PSI …………….. 30 psi APMi with a 1/4″ NPT male pressure testing and
1-meter cable.
APMi700BAR-BSP-3M … 700 bar APMi with a 1/4″ BSP male pressure thing and 3
meter cable.
APMi10MPA-M20-10M … 10 MPa APMi with an M20x1.5 male pressure thing and 10
meter cable.
Pressure Conversions
1 PSI = 27.6806 inches of water column (water at 4°C [39.2°F])
703.087 millimeters of water column (water at 4°C [39.2°F])
70.3087 centimeters of water column (water at 4°C [39.2°F])
2.03602 inches of mercury (mercury at 0°C [32°F])
51.7149 millimeters of mercury (mercury at 0°C [32°F])
6.8948 kilopascals
0.070307 kilograms per square centimeter
0.068948 bar
68.948 millibar
0.0068948 megapascals
HAZARDOUS LOCATIONS
The HPC50 Series calibrator with an APMi module has a rating of:
II 1G Ex ia IIC T4/T3 Ga
FTZU 18 ATEX 0043X
The APM can be connected and disconnected in Hazardous Areas.
Ex ia IIC T4/T3 Ga
IECEx FTZU 18.0012X
Exia Intrinsically Safe and Non-Incendive for Hazardous Locations:
Class I, Division 1, Groups A, B, C, and D; Temperature Code T4/T3. Class I,
Zone 0, AEx ia IIC T4/T3 Ga.
Entity Parameters
Ui = 5.0 V
li = 740 mA
Pi = 880 mW
Ci = 9.2 µF
Li = 12 µH
Certifications
We declare that the APM is in accordance with the ATEX Directive,
Electromagnetic Compatibility Directive, Pressure Equipment Directive, and
RoHS Directive per our declaration(s).
This HPC50 is approved for use as a portable test instrument for Marine use
and complies with DNV GL Rules for the Classification of Ships, High Speed &
Light Craft, and Onshore Units.
Support
If adjustment is required, we recommend returning the APMi to the factory.
Factory service ours benefits you won’t nd anywhere else. Factory calibration
tests your APMi utilizing NIST traceable standards, resulting in calibration
certificates that provide performance data and uncertainties. Our calibration
facilities are A2LA accredited (cert #2601.01) to ISO 17025:2005 & ANSI/NCSL
Z540-1-1994. A2LA is internationally recognized as an accreditation body by
the International Laboratory Accreditation Cooperation, ILAC. Furthermore,
upgrades may be available to add or enhance operating features. We designed
the product to last, and we support it so that you can get the most from your
investment.
Under normal operating conditions, we recommend the APM be calibrated on an
annual basis. Your quality system may require more or less frequent
calibration, or your experience with the gauge or operating environment may
suggest longer or shorter intervals.
There are no internal potentiometers. The APM has a “span factor” (users pay),
set to approximately 1 (as shipped from the factory). As components age this
may need to be changed to a value slightly higher or lower, to slightly
increase or decrease all readings. This adjustment can be made with a computer
through our free CrystalControl software.
“Zero” the APMi, then record the displayed pressure for two or more pressure
points. Determine if the APMi would benet from an overall increase or decrease
of the indicated pressures. Adjust the user span value accordingly and
validate the results.
ACCESSORIES AND REPLACEMENT PARTS
MPM-1/4MPT CPF Male to 1/4″ Male NPT Fitting Included as standard
MPM-1/4BSPM CPF Male to 1/4″ Male BSP Fitting Included with -BSP
MPM-M20x1.5M CPF Male to M20 Male Adapter Included with -M20
WARRANTY
Crystal Engineering Corporation warrants the APM (Advanced Pressure Module) to
be free from defects in material and workmanship under normal use and service
for one (1) year from the date of purchase to the original purchaser. It does
not apply to batteries or when the product has been misused, altered, or
damaged by an accident or abnormal conditions of operation.
Crystal Engineering will, at our option, repair or replace the defective
device free of charge and the device will be returned, transportation prepaid.
However, if we determine the failure was caused by misuse, alteration,
accident, or abnormal condition of operation, you will be billed for the
repair.
CRYSTAL ENGINEERING CORPORATION MAKES NO WARRANTY OTHER THAN THE LIMITED
WARRANTY STATED ABOVE. ALL WARRANTIES, INCLUDING IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE, ARE LIMITED TO A PERIOD
OF ONE (1) YEAR FROM THE DATE OF PURCHASE. CRYSTAL ENGINEERING SHALL NOT BE
LIABLE FOR ANY SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN
CONTRACT, TORT, OR OTHERWISE.
Note: (the USA only) Some states do not allow limitations of implied
warranties or the exclusion of incidental or consequential damages, so the
above limitations or exclusions may not apply to you. This warranty gives you
specific legal rights and you may have other rights which vary from state to
state.
© 2019 Crystal Engineering Corporation
Find Quality Products Online at:
www.GlobalTestSupply.com
[email protected]