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The Model 1025LX SUPER SCHWIEN manometer, is a laboratory-grade precision
primary standard and is highly accurate and stable in both the measurement
and generation of absolute or differential pressures.
Used by avionics manufacturers, the military, and airlines world-wide, the
SUPER SCHWIEN MANOMETER is used in automated production lines, Primary Standards
Laboratories and R&D departments, for the calibration of secondary pressure
standards, transfer standards, air data test sets, air data computers, flight
instruments, barometers, and pressure transducers.
Standard Features For Easy Operation
1. The manometers internal microprocessor calculates automatic compensation
and correction algorithms for:
- Non-standard Gravity
- Temperature
- Mercury Density
- Mercury Compressibility
- Gas Type
- Gas Head
- Imperfect Reference Vacuum
- Dielectric Constant
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2. The manometer may be operated
in any of the following pressure units:
- inches of Mercury
- psi
- Torr
- kilopascals
- millibar
- inches of water
- kilofeet of altitude
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3. The manometer position height
units are:
- Inches
- Centimetres
- Millimetres
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4. Temperature
units may be read from the front panel digital display in:
- Fahrenheit
- Celsius (Centigrade)
- Kelvin
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5. Modes of Operation:
- Automatic Pressure Control Mode
- Automatic Measure Mode
1. Absolute
2. Gauge
3. Differential
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6.
Programmability
- Non-standard Gravity
- Air Head
- Reference Pressure
- Pressure Limits
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7.
Hewlett Packard Laser Positioning Transducer System
8. IEEE-488 (GP-IB) Computer Interface |
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ABOUT SCHWIEN
Schwien Engineering, Inc,. the industry leader for more than 35 years, was
founded in 1958, specifically to meet the specialized needs for precise
pressure control and measurement in the avionics industry. In this age of
rapid obsolescence, SCHWIEN MANOMETERS are unique. The majority of Schwien
manometers built by Schwien Engineering, since the late L. Nevin Schwien
introduced the original design in Pomona, California, are still in service.
Their performance record is testimony to their superior quality and capability,
and to Schwien Engineering’s on-going long-term service and support
program. Like all of the MERCO-MASTERTM
manometers placed in service worldwide, the SUPER SCHWIEN MANOMETER will
provide years of precise and efficient service. |
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COST EFFECTIVE
Superior accuracy, repeatability, versatility, and dynamic range make the
SUPER SCHWIEN MANOMETERS very cost effective for operations with critical
requirements for precise pressure calibrations.
For R&D departments, the SUPER SCHWIEN MANOMETERS precision means new
products get to the market faster. For production lines and Calibration
Labs, it provides a high level of confidence and minimizes product and equipment
recall.
Cost-of ownership savings are realized with the SUPER SCHWIEN manometer.
Annual calibration and maintenance cost, and down-time caused by mechanical
failure are greatly reduced. Accuracy verification and mechanical linearisation
of the Leadscrew Elevation System are completely eliminated. |
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AUTOMATED DATA ACQUISITION
Manometer remote control operation is provided for by way of the IEEE-488
General Purpose Interface Bus (GPIB), and an optional instrument controller
and calibration software. The calibration software is a complete turnkey
package featuring support for Automatic Test Equipment with IEEE-488 or
EIA-232 I/O ports. Software tools are included for easy in house software
development. |
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AUTOMATIC PRESSURE GENERATION
AND MEASUREMENT
Automatic pressure generation is an outstanding feature of the SUPER SCHWIEN
MANOMETER. The pressure controller system achieves pressure null within
seconds of setting a position. Another feature is the new automatic measure
mode, allowing unknown pressures to be measured automatically. |
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CUSTOM
INSTALLATION
Plumbing Installation Kit
The plumbing kit provides a simple, turnkey-installation solution based
on the customers desired installation layout. Detailed drawings are generated
to conform to the installations requirements. After the drawings are reviewed
and approved, plumbing hardware is designed, built and installed in a mock-up
at Schwien Engineering. After testing and final approval, the plumbing is
dismantled and shipped to the installation site.
Custom installation and set-up of the manometer system is offered by Chell,
who have over 25yrs experience with the manometer.
Schwien Manometer Training Class
A four-day class is held annually at Schwien Engineering, that covers manometer
principles, manometer operation and testing, system maintenance, and system
calibration and verification.
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STANDARD ACCESSORIES
Vacuum Pump
Required equipment for normal operation. One is used for reference vacuum,
and one for control vacuum.
Vacuum Meter Kit
Used to verify the calibration of the manometers Reference Vacuum Readout.
Also can be used o measure any instrument vacuum in the range of 1 to 1,000
microns of mercury.
Flow Meter
Required when performing adjustments to the Pressure Controller servo valve.
Mercury Fill & Pump-Down System
Required when filling or draining mercury from manometer.
Mercury
Instrument grade, quadruple distilled. |
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OPTIONAL
ACCESSORIES
Vacuum Pump
A third pump, used to provide a vacuum source at the Pneumatic Service Panel.
Low Pressure System
Extends the operational range of the pressure controller to 0.0500 inches
of mercury absolute.
Vacuum Shut-Off Valve
Allows the reference vacuum pump to be isolated when a pressure other than
a high vacuum is required.
Plumbing & Installation Kit
Polyethylene or stainless steel tubing.
IEEE-488 Instrument Controller
386@ 20MHz, 40Mb hard disk, 1.44Mb 3.5" floppy disk drive, with dos
5.0 and TransEra HTBasic.
IEEE-488 Manometer Control Software
Designed for calibration laboratory environments, this software package
allows the user to control the manometer from a PC.
Pneumatic Service Panel
Provides easy bench-top hook-up to the manometers Controlled Pressure Output
Port, plus AUXILIARY Air & Vacuum Supplies, and Reference Vacuum Port.
Spare Thermistor Kit
Spring Depressor |
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1025LX
MANOMETER SPECIFICATIONS |
| Range |
One of three possible: 60, 100,
110 inches of mercury. All function in absolute or differential mode |
| Overall |
Error ±0.00028 in Hg ±
0.0015% of reading |
| Reference Pressure
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Not to exceed 100 in HgA |
| Slew Rate |
Moving Cistern: 0.02 to 50 inches
per minute up or down Pressure: Rate of change of controlled pressure is
dependent upon volume connected externally to the manometer |
| Response Time (High
Accuracy Nulling) |
From 100 in HgA to 0.5 in HgA
= Less than 60 seconds (normally less than 15 seconds)
From 0.3 in HgA to 0.5 in HgA = Less than 90 seconds |
| Pressure Controller
Range |
0.3 in HgA to full range differential.
0.05 in HgA with Low Pressure Option |
| Pressure Controller
Accuracy |
In the completely Automatic
mode, null offsets (without manual adjustment) may be as much as 0.0003
in Hg. There is a null offset adjustment on the Front Control Panel which
reduces the null offset for a given pressure to zero. When this manual adjustment
is used, the entire System (including Pressure Controller) is then accurate
within the tolerance stated. |
| Automatic Temperature
& Gravity Correction |
± 0.0007% of reading when
cabinet temperature gradients are maintained below 0.15°F |
| Manometer Cabinet Temperature
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A blower system reduces cabinet
temperature gradients to 0.15°F. (see Environment) |
| Environment |
The above specifications are
valid when ambient temperature is in the range of 65°F to 85°F
with a 3°F/ hour maximum rate of change. The Manometer must be installed
on a stable floor to minimize level changes and vibration. |
| Overall Dimensions
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60" Model: Width = 24"(60cm),
Depth = 45" (112.5cm), Height = 87" (217.5cm)
100" Model: Width = 43" (107.5cm), Depth = 45" (112.5cm),
Height = 127" (317.5cm)
110" Model: Width = 43" (107.5cm), Depth = 45" (112.5cm),
Height = 139" (347.5cm) |
| Weight |
60" Model: 1000 lbs. (450kg)
100" Model: 1350 lbs. (607.5kg)
110" Model: 1500 lbs. (675 kg) |
| Power Requirements
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115 volts, 60Hz, 5amps, Single
Phase |
| Pressure Media |
Clean and dry nitrogen or air,
5 micron filtered |
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