NP785 Ultra Low Differential Pressure Transmitter

• Available Ranges: ±0.02 mbar to ±14.5 PSI mbar
• Ranges Fully Configurable by Software Within Rated Range
• Temperature Compensated for Higher Stability at Low Pressures
• 4 or 6 mm Nickel Plated Brass Fittings for Pneumatic Hoses
• Output Signal 0 to 10 V or 4 to 20 mA
• USB and RS485 Connectivity
• Free Downloadable Software
• Resistant to Overpressure

Ideal for HVAC, clean-room and flow measurement applications, the NP785 is an ultra low differential pressure transmitter for measuring very small over-pressure, under pressure and differential pressure in neutral, non-corrosive gaseous media. It provides a pressure proportional linear signal output with configurable measuring range via USB using the configuration software. The NP785 can operate bi-directionally, providing the ability to measure differential pressure ranges from vacuum to positive pressure. It is housed in a DIN rail mountable ABS/ PC enclosure and its nickel plated brass fittings accept pneumatic hoses with 4 or 6 mm internal diameter. The analog output can be set to either 0-10 V or 4-20 mA while having an RS485 port with Modbus RTU communication protocol.

The NP785 has a digital alarm output, which supports the configuration of the alarm condition, adjustable set points and custom timing, among other functions. It's output can be configured for 0-10 V or  4-20 mA  with adjustable range within the sensor limits. It also has adjustable behavior options in case of sensor error. The free downloadable NXperience software offers a quick and intuitive way to configure all of the sensor features. The NXperience software also provides monitoring and diagnostics features.

Designed for HVAC and industrial environment, the NP785 ensures temperature compensation for long term stability and complies with EMC standards, providing robustness and reliability for a wide range of applications.

NXperience - Configuration, Data Collection and Diagnostic Software (Free Download)

PART NUMBERS	DESCRIPTION
NP785-50PA	Ultra Low Differential Pressure Transducer, ±0.02mbar(±0.2  inches H2O, ± 50 Pa)
NP785-100PA	Ultra Low Differential Pressure Transducer, ±1mbar(± 0.4 inches H2O, ± 100 Pa)
NP785-05	Ultra Low Differential Pressure Transducer, ±5 mbar (± 2in H2O)
NP785-20	Ultra Low Differential Pressure Transducer, ±20 mbar (±8 in H2O)
NP785-68	Ultra Low Differential Pressure Transducer, ±68 mbar(±27 inches H20, ±1PSI)
NP785-400	Ultra Low Differential Pressure Transducer, ±400 mbar(160 inches H2O, 5.8 PSI)
NP785-1000	Ultra Low Differential Pressure Transducer, ±1000 mbar(400 inches H2O, 14.5 PSI)

SPECIFICATIONS (see spec sheet for detailed specifications)

NP785-50PA Specifications
Measuring Range: ±50 Pa(±0.2  inches H2O)
Proof Pressure*: 68mbar (27 inches W.C.)
Burst Pressure: 200 mbar (80 inches W.C.)
Line Pressure**: 68mbar (27 inches W.C.)
Accuracy (RSS, includes,linearity, hysteresis, and repeatability): 1.5% of F.S.
Operating Temperature: -20 to 70°C (-4 to 158°F)

NP785-100PA Specifications
Measuring Range: ±20 mbar (± 8.0 inches W.C.)
Proof Pressure*: 68mbar (27 inches W.C.)
Burst Pressure: 200 mbar (80 inches W.C.)
Line Pressure**: 68mbar (27 inches W.C.)
Operating Temperature: -20 to 70°C (-4 to 158°F)
Accuracy (RSS, includes,linearity, hysteresis, and repeatability): 1% of F.S.

NP785-05 Specifications
Measuring Range: ±5 mbar (± 2.0 inches W.C.)
Proof Pressure*: 100 mbar (40 inches W.C.)
Burst Pressure: 200 mbar (80 inches W.C.)
Line Pressure**: 100 mbar (40 inches W.C.)
Operating Temperature: -5 to 65°C (23to 149°F)
Accuracy (RSS, includes,linearity, hysteresis, and repeatability): 1% of F.S.

NP785-20 Specifications
Measuring Range: ±20 mbar (± 8.0 inches W.C.)
Proof Pressure*: 300 mbar (120 inches W.C.)
Burst Pressure: 400 mbar (160 inches W.C.)
Line Pressure**: 300 mbar (120 inches W.C.)
Operating Temperature: -20 to 70°C (-4 to 158°F)
Accuracy (RSS, includes,linearity, hysteresis, and repeatability): 0.5% of F.S.

NP785-68 Specifications
Measuring Range: ± 68 mbar (±27 inches W.C, ±1PSI)
Proof Pressure*: 136 mbar (55 inches W.C.)
Burst Pressure: 2000 mbar (29 PSI)
Line Pressure**: 136 mbar (55 inches W.C.)
Operating Temperature: -20 to 70°C (-4 to 158°F)
Accuracy (RSS, includes,linearity, hysteresis, and repeatability): 1% of F.S.

NP785-400 Specifications
Measuring Range:  ±400 mbar (160 inches H2O, 5.8 PSI)
Proof Pressure*: 800 mbar (320 inches W.C., 11 PSI)
Burst Pressure: 4000 mbar (58 PSI)
Line Pressure**: 800 mbar (320 inches W.C.)
Operating Temperature: -20 to 85°C (320 inches W.C., 11 PSI)
Accuracy (RSS, includes,linearity, hysteresis, and repeatability): 0.5% of F.S.

NP785-1000 Specifications
Measuring Range: ±1000 mbar (400 inches H2O, 14.5 PSI)
Proof Pressure*: 2000 mbar (29 PSI)
Burst Pressure: 4000 mbar (58 PSI)
Line Pressure**: 2000 mbar (29 PSI)
Operating Temperature: -20 to 85°C (-4 to 185°F)
Accuracy (RSS, includes,linearity, hysteresis, and repeatability): 0.5% of F.S.

* Proof Pressure is defined as the maximum pressure at which the device can be subjected and which still maintains its performance within specifications after returning to the operating range.

** Line pressure: The maximum pressure that can be applied simultaneously to both pressure ports of the sensor without causing permanent damage and without applying differential pressure.

Common Specifications
Pressure Connector:  Two 4 or 6 mm (0.16 or 2.36 in) inner diameter
fittings for pneumatic hoses.
Output: 0-10 V or 4-20 mA, user configurable.
Power: PWR terminals ->12 Vdc to 30 Vdc; USB cable power-> 4.75 Vdc to 5.25 Vdc.
Consumption: 45 mA ± 10% @ 24Vdc
Alarm Output: 30 Vdc / 200 mA output
Protection Rating: IP 20
Dimensions: 19 x 77.9 x 72 mm (0.75 x 3.07 x 2.83 in)
Housing: ABS + PC
EMC: EN/IEC 61326-1
Configuration Software: NOVUS NXperience free software (via USB)
Certification: CE