7050LP Low Pressure Indicator

The 7050LP offers unmatched performance and measurement precision. Utilizing multiple ranges in a single instrument.


  • Dual range, select from 10/30 inH2O or 20/60 inH2O or 35/100 inH20 range combinations
  • Precision: 0.005 % of reading from 10 % to 100 % Full Scale (FS)
  • Resolution to 0.0001 inH2O
  • Languages: English, French, Chinese, German, Japanese, Spanish and Italian


The 7050LP low pressure digital pressure indicator, part of the versatile Series 7250 family, is specifically designed to meet the demanding performance requirements of calibrating low pressure sensors, transducers, mechanical gauges, portable calibrators and their plug-in modules. To accommodate bidirectional devices, the 7050LP can be supplied to operate in both positive and negative gauge modes.

The 7050LP offers unmatched performance and measurement precision. Utilizing multiple ranges in a single instrument, the 7050LP combines precision, stability, and affordability. The 7050LP has a unique quartz sensor, the most accurate pressure sensing technology available in a digital pressure calibrator. Each quartz sensor is manufactured and tested to provide the ultimate performance required by a Fluke Calibration pressure calibrator, ensuring that every customer receives the highest quality, precision and stability in their instrument.

Advanced precision

The 7050LP is available in three different range configurations, each a dual range instrument. Select either the 10 inH20 and 30 inH2O combination, or the 20 inH2O and 60 inH2O or the 35 inH2O and 100 inH2O range combination. Each combination provides a precision to 0.005 % of reading from 10 to 100 % of the higher range. For pressures from 0 to 10 %, the precision is a fixed error equal to 0.005 % of 10 % FS. This unmatched precision is achieved by the unique quartz pressure sensing technology that puts the pressure in direct contact with the quartz element, eliminating mechanical linkages and metal diaphragms. Since this is a differential sensor, the reference side of the 7050LP can be connected to the reference side (low side) of the device under test. Therefore, disturbances due to room drafts, HVAC systems and opening/closing doors, which can have a detrimental effect on the calibration process, are eliminated. The 7050LP provides both unequalled precision and excellent long term stability due to the inherent properties of quartz. For example, the total uncertainty for a 10/30 inH2O range combination over a one year calibration interval is 0.009 % of reading or 0.00015 inH2O (whichever is greater).

Automating pressure test and calibration

The 7050LP is easy to use and can be automated through the remote interface.
The 7050LP is provided with both an RS-232 and IEEE-488 interface, and syntax for all Series 7250s follows SCPI protocol for easy programming. COMPASS® for Pressure, an off-the-shelf software package, is available. A LabVIEW® driver is available as a free download. As a standard feature, software written for the previous generation Series 7215, 7010 and 6000 instruments is fully supported by the 7050LP. The 7050LP can be set to 510 emulation mode to use software originally written for the DPI 510. Firmware updates can be performed over the RS-232 interface (updates can be downloaded from the web site). A MET/CAL® software driver is available.

Versatility to handle any pneumatic pressure calibration

The 7050LP is versatile enough to handle almost any type of low pressure calibration.

Dual range:

The 7050LP has two ranges in one instrument, 10 inH2O and 30 inH2O, or specify the 20 inH2O and 60 inH2O or the 35 inH2O and 100 inH2O range combination. The 7050LP will automatically change ranges to ensure the highest performance at the requested pressure.

Pressure units/scales:

The 7050LP includes more than 12 standard units of measure, including inH2O at 4 °C (39 °F), 20 °C (68 °F), and 16°C (61 °F), in Hg at 0 °C (32 °F) and 16 °C (61 °F), kPa, bar, psi, kg/cm3, mm Hg at 0 °C (32 °F), cm Hg at 0 °C (32 °F), and cm H2O at 4°C (39 °F), and two user-defined units.

Head pressure:

The 7050LP automatically corrects for head pressure differences.

Accredited Calibration Report:

The 7050LP comes standard with an accredited calibration report.


The 7050LP can be provided for gauge mode operation, or with:
  • Vacuum (negative gauge) mode for bidirectional devices
  • Rack mount kit



Standard Pressure Ranges

Model 7050LP 10/30 inH2O (25/75 mbar)
20/60 inH2O (50/150 mbar)
35/100 inH2O (87/250 mbar)
Optional Modes Absolute using barometric reference sensor for ranges from 15 to 1500 psig (1.0 to 100 barg) Absolute using vacuum reference option for ranges 5 to 1500 psig (400 mbar to 100 barg) Negative gauge


Precision Model 7050LP
From 10% to 100% of maximum FS, 0.005% reading, Below 10% maximum FS: 0.005% of 10% maximum FS
Stability 0.0075% of reading per year
Display Resolution User selectable to 1:1,000,000
Negative Gauge Precision (optional) Same as the corresponding gauge pressure


Calibration An ISO-17025 accredited calibration is provided.

Total Uncertainty

Maximum deviation from the true value of pressure including precision, stability, temperature effects and the calibration standard
Model 7050LP 10/30 inH2O (25/75 mbar) RSS: 0.005% and 0.0075% of reading per year down to 10% of maximum FS, Below 10% RSS: 0.00015 inH2O (0.000375 mbar) and 0.0075% of reading per year


Communications RS232 and IEEE-488, SCPI syntax. Series 7250, 7215, Model 7000 and Series 6000 emulation are standard.

MET/CAL® drive—optional
LabView® drive
Firmware updates are performed via RS232 Interface


Menus and functions The Series 7050 is capable of displaying menus and functions in:
English, French, Chinese, German, Japanese, Spanish and Italian


  • Negative gauge only
  • MET/CAL driver
  • COMPASS for Pressure
  • Rack mount kit
  • DVU Dual Volume Unit


Display TFT, VGA, active matrix, 6.4 in (162.5 mm) 640 x 480 resolution, 65,000 colors
Temperature Operating: 64°F to 96°F (18°C to 36°C)

Storage: -4°F to 158°F (-20°C to 70°C)

Humidity 5% to 95% relative humidity, non-condensing
Dimensions (h x w x d) All versions: 7 in x 16.5 in x 19 in

(178 mm x 419 mm x 483 mm)

Weight All models: 16 lb (7.5 kg)
Power 90 to 260 VAC, 50/60 Hz, 150W
Test Port and Reference Connection 1/4 in NPT female
Warm Up Time 2 to 3 hours; may be left on indefinitely
Pressure Medium Nitrogen or clean dry air



Model Name


7050LP Digital Pressure Indicator for low pressure measurements

Accessories common to all models:



MET/CAL driver MET/CAL driver optional accessory
Labview Driver LabView® driver optional accessory
PK-PPC-BG-DVU Dual volume unit for use with BG15K Q-RPT
7050 NEG-GAU Vacuum (negative gauge) Mode
7000-102 Liquid Trap Liquid trap assembly
3990-801 Manual Pressure Control Pack Manual Pressure Controller to 7 MPa (1000 psi)
3990-803 Manual Pressure Control Pack Manual Pressure Control to 20 MPa (3000 psi)
3893-801 Pressure Adjustment Assembly Pressure Adjustment Assembly Precise, VAC/3KPSI
7250-903 Rack Mount Kit Rack mount kit for 19 in. EIA cabinets, 24 in. deep
7250-904 Rack Mount Kit Rack mount kit for 19 in. EIA cabinets, 30 in. deep


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