Technical data

Series 7050Ruska Digital
Pressure Indicator

The Series 7050 digital pressure indicator expands upon
the popular line of Series 7000 products such as the Series
7250 digital pressure controller and Series 7252 dual output
pressure controller. The 7250 and 7252 provide both pressure measurement and control, and the 7050 provides
an instrument for applications that only require pressure
measurement.
Three models are available to meet a wide range ofapplications:• Model 7050i with advanced percent of reading precision• Model 7050 with a high performance-to-price ratio• Model 7050LP for low pressure measurements
The Model 7050i, 7050 and 7050LP all use a unique quartz
sensor, the most accurate pressure sensing technology
available. Each quartz sensor is manufactured and tested toprovide the ultimate performance required by a Fluke Calibration pressure calibrator, ensuring that every customer
receives quality, precision and long term stability in theirinstrument.

Advanced precision
The Model 7050i offers advanced percent of reading
precision for increased capability with a single instrument, reducing the investment required to measure a wide
pressure range. This model provides 0.005 % of reading
precision from 40 % to 100 % of the instrument’s range.
For pressures below the lower threshold of 40 %, the 7050i

Features• Pressure ranges from 0 to 10 inH2O and0 to 1500 psi (0 to 25 mbar and 0 to 100bar)• Choose from three models: 7050i, 7050
and 7050LP• Model 7050i provides advanced
precision of 0.005% of reading• Model 7050 provides 0.003 % of fullscale precision• Stability: 0.0075 % of reading per year
• Active matrix color screen with enhanced navigation menus• Languages: English, French, Chinese,German, Japanese, Spanish and Italianprecision is 0.005 % of the lower threshold value.
For example, a 100 psi (7 bar) Model 7050i provides 0.005 % of reading from 40 to 100 psi (2.8to 7 bar); the precision for pressures from 0 to 40
psi (0 to 2.8 bar) is 0.005 % of 40 psi (2.8 bar).
This unmatched precision is achieved throughunique quartz pressure sensing technology andmultiple quartz sensors in a single instrument.
Various full scale pressure ranges from 0 to 5
to 0 to 1500 psi (0 to 400 mbar to 0 to 100 bar)are available. For absolute mode operation,
select either the barometric reference option,or the vacuum reference option, which requires
an external vacuum pump connected to thereference port. The latter features an on-board
vacuum sensor that allows automatic zeroing in
absolute mode. Permanent absolute ranges to50 psia (4 bar) are also available.

Standard precision
For applications that do not require the level of
performance provided in the Model 7050i, theModel 7050 offers an economical approach tohigh-accuracy pressure measurement, with aprecision of 0.003 % of full scale. Various ranges
from 0 to 5 to 0 to 1500 psi (0 to 400 mbar to0 to 100 bar) are available. For absolute mode
operation, select either the barometric referenceoption, or the vacuum reference option, which
requires an external vacuum pump connectedto the reference port. The latter features an
on-board vacuum sensor that allows automatic
zeroing in absolute mode. Permanent absolute
ranges to 50 psia (4 bar) are also available.

Low pressure: 7050LP
The Model 7050LP is a specially configured
instrument for low pressure applications and isavailable in three different range combinations
with two ranges in a single instrument:• 10 inH2O and 30 inH2O (25 and 75 mbar)• 20 inH2O and 60 inH2O (50 and 150 mbar)

Series 7050 features a unique fused-quartz sensor. This rugged
transducer offers unequalled precision and a stability of 0.007 %of reading per year.

Long term stability
All three models not only provide unequalled
precision, but also excellent long term stability of0.0075 % of reading per year due to the inherent
properties of quartz.

Automating pressure test andcalibration
The 7050i, 7050 and 7050LP are provided withboth an RS-232 and IEEE-488 interface, andSeries 7050 syntax follows SCPI protocol for easy
programming. As a standard feature, software
written for previous generation Series 7215,
7010, 7000 and 6000 instruments is fully supported by the Series 7050.
Intecal, an off-the-shelf software package isavailable.
Firmware updates can be performed over theRS232 interface.

• 35 inH2O and 100 inH2O (87 and 250 mbar)

Versatility

The 7050LP provides a precision of 0.005 % ofreading from 25 % to 100 % of the maximumrange. For example, the 10/30 inH2O 7050LP
provides a precision of 0.005 % of reading whenmeasuring pressure from 30 to 7.5 inH2O (75 to18.75 mbar). Changing ranges is automatic both
upscale and downscale and does not require
operator intervention. Since the 7050LP utilizes
a true differential sensor, the reference port of
the 7050LP can be connected to the test systemeliminating unwanted pressure disturbances due
to room drafts caused by HVAC systems.

The Series 7050 is versatile enough to handle
almost any type of pneumatic pressure measurement application.

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Series 7050 Ruska Digital Pressure Indicator

Wide pressure range
Available in a variety of standard or custom fullscale pressure ranges from 10 inH2O to 1500 psi(25 mbar to 100 bar)Pressure units/scales
Select from over twelve standard units of measure, including inHg at 0 °C and 60 °F, kPa, bar,psi, inH2O at 4 °C, 20 °C and 60 °F, kg/cm2, mmHg
at 0°C, cmHg at 0 °C, and cmH2O at 4 °C, and twouser-defined units

Head pressure
Automatic correction for head pressure
differences.

Absolute mode
The 7050i and 7050 offer three different methods
to make absolute pressure measurements. The
barometric reference option provides the mostconvenient method and is available on ranges
15 psi (1.0 bar) and higher. Alternatively, thevacuum reference option allows the connectionof an external vacuum pump to the reference
port of the instrument. An on-board vacuum
sensor monitors the reference vacuum andallows for automatic zeroing in absolute mode.
This option provides the lowest overall uncertainty since it does not include the additional
uncertainty of a secondary barometric reference
sensor. For pressures to 50 psia (4 bar), permanent absolute models are also available.

Options
The following options are available for the Series
7050:• Vacuum (negative gauge) mode forbidirectional measurements• Barometric reference for absolute mode
operation with the 7050i and 7050; ranges
15 psi (1.0 bar) and higher• Vacuum reference for absolute mode operation
via an external vacuum pump connected to thereference port for 7050i and 7050
• Permanent absolute ranges to 50 psia (4 bar)full scale, which include a tare feature forsimulated gauge mode operation
The Series 7050 digital pressure indicators
provide high performance pressure measurement with a wide variety of pressure ranges andoptions. All are easy to use, easy to maintain, andhave the reliability, performance and featuresthat you want.

Pressure limits
Set upper and lower pressure limits to sound an
audible alarm.

Automatic zeroing
All models feature automatic zeroing, including
units with the vacuum reference option, for automated absolute mode zeroing through the front
panel or over the PC interfaces.

The Series 7050 features an easy to navigate menu structure with full text descriptions
for menus and commands. The large color display allows the pressure value to be
displayed even when viewing a submenu selection such as the units selection screen
shown above.

3 Fluke Corporation

Series 7050 Ruska Digital Pressure IndicatorSpecifications
GeneralFunction

7050

Electrical power

90/260 V ac, 50/60 Hz, 150 W
Operating: 18 °C to 36 °C (64 °F to 97 °F)
Storage: -20 °C to 70 °C (-4 °F to 158 °F)

Temperature
Humidity

5 % to 95 % RH, non-condensing

WeightSeries 7252/7252i: 9 kg (20 lb)
All versions: 178 mm x 419 mm x 483 mm(7 in x 16.5 in x 19 in)Dimensions (H x W x D)
Pressure medium

Nitrogen or clean dry air

Display

TFT, VGA, active matrix, 162.5 mm (6.4 in) 640 x 480 resolution, 65,000 colors

Test port and supply connection

1/4 in NPT female

Warm up time

24 hours; may be left on indefinitely

Standard pressure ranges
Model 7050i

Select any full scale from 5 psig to 1500 psig (400 mbar to 100 barg).
Or, permanent absolute ranges are available from 15 psia to 50 psia
(1 bara to 4 bara).

Model 7050

Select any Full Ccale pressure range from 5 psig to 1500 psig (400 mbar to 100 barg).
Or, permanent absolute ranges are available from 15 psia to 50 psia (1 bara to 4 bara).

Model 7050LP

10/30 inH2O (25/75 mbar)
20/60 inH2O (50/150 mbar)
35/100 inH2O (87/250 mbar)
Absolute using barometric reference sensor for ranges from 15 psig to 1500 psig
(1.0 barg to 100 barg)

Optional modes

Absolute using vacuum reference option for ranges 5 psig to 1500 psig
(400 mbar to 100 barg)
Negative gauge

Performance
Model 7050i: From 40 % to 100 % full scale (FS): 0.005 % of reading
Below 40 % FS: 0.005 % of 40 % FSPrecision

Model 7050: 0.003 % of FS
Model 7050LP: From 25 % to 100 % of maximum FS, 0.005 % reading,
Below 25 % maximum FS: 0.005 % of 25 % maximum FS

Stability

0.0075 % of reading per year

Display resolution

User selectable to 1:1,000,000
Model 7050i: 0.005 % of 40 % FS or 0.0008 psi (0.055 mbar),whichever is greater

Negative gauge
precision (optional)

Model 7050: 0.003 % of FS
Model 7050LP: 0.005 % of reading from 25 % to 100 % maximum FS
Below 25 % maximum FS 0.005 % of 25 % maximum FS

Barometric Reference (optional)

0.002 psi (0.1379 mbar) maximum error per year

Vacuum Reference (optional)

0.0002 psi (0.014 mbar) maximum error per year

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Series 7050 Ruska Digital Pressure IndicatorCalibration
A calibration report with traceability to National Institute of Standards and Technology (NIST) is provided. An ISO-17025 accredited
calibration is standard.

Total uncertainty
The maximum deviation from the true value of pressure including precision, stability, temperature effects and the calibrationstandard is:Model 7050i

40 % to 100 % FS
90 day: 0.006 % reading
1 year: 0.009 % reading

Model 7050

Ranges to 1500 psi (100 bar)
90 day RSS: 0.003 % FS + 0.002 % of reading
1 year RSS: 0.003 % FS + 0.0075 % of reading

Model 7050LP±(0.005 % of reading) from 25 % FS to 100 % FS.
±(0.005 % of 25 % FS) from 0 % FS to 25% FS.
Neg. Gauge (opt):±(0.005 % of reading) from 25 % FS to 100 % FS.
±(0.005 % of 25 % FS) from 0 % FS to 25 % FS.

Communications
RS-232 and IEEE-488, SCPIsyntax

Series 7250, 7215, Model 7000 and Series 6000 emulation are standard

LabView driver

Optional

Firmware updates are performed via RS-232 interface

Languages
The Series 7050 is capable of displaying menus and functions in: English, French, Chinese, German, Japanese, Spanish and ItalianOptions
Barometric reference (absolute and negative gauge)
Vacuum reference* (absolute)
Negative gauge only
MET/CAL driver
Intecal software
NVLAP-accredited calibration
Rack mount kit
Liquid trap assembly

Precision
Precision is defined as the combined effects of linearity, repeatability and hysteresis throughout the operating temperature range.
Expression of total uncertainty conforms with the recommendations of the ISO Guide to the Expression of Uncertainty inMeasurement.
*Requires external vacuum pump

5 Fluke Corporation

Series 7050 Ruska Digital Pressure IndicatorSpecifications
Model 7050i

Uncertainty (2 sigma)

Precision

0.005 % of reading

Stability (one year)

0.0075 % of reading

Calibration standard

0.0010 % of reading

Environmental temperature(included in precision)

0.000 % of reading

Head pressure

0.001 % of reading

Expanded uncertainty (2 sigma)

0.009 % of reading

Fluke Calibration. Precision, performance, confidence.™
Electrical

RFTemperature

Fluke Calibration
PO Box 9090, Everett, WA 98206
U.S.A.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
Web access: http://www.flukecal.eu

Modification of this document is not
permitted without written permission
from Fluke Calibration.

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For more information callIn the U.S.A. (877) 355-3225 orFax (425) 446-5716
In Europe/M-East/Africa +31 (0) 40 2675 200
or Fax +31 (0) 40 2675 222
In Canada (800)-36-FLUKE or
Fax (905) 890-6866
From other countries +1 (425) 446-6110 or
Fax +1 (425) 446-5716
Web access: http://www.flukecal.com©2010, 2021 Fluke Calibration.
Specifications subject to change without notice.
Printed in U.S.A. 10/2021 211007-3833764-en