NP640 Digital Pressure Gauge and Transmitter

• Low Cost
• LED Digital Display
• Compact Size
• 0.25% Accuracy( 1.0 % for the 100 bar model)
• 3:1 Rangeabiity
• Dynamic Response Time < 30 ms
• Stainless Steel Body with IP65 Protection Rating
  
• Software Scaleable 4-20mA Output Range
• Display of Alarms: Minimum Value, Maximum Value or Out of Range Values
  
• Adjustable Offset
  
• Configuration is Password Protected
  
• Push-Button Easy Configuration
  

The NP640 Digital Pressure Gauge and Transmitter is a solution bundle that includes the low-cost and highly accurate NP640 Pressure Transducer and the LoopView LED loop-powered indicator which provides a local display for the NP640.  The bundle can be ordered under one convenient part number with versions available for different pressure ranges.

The NP640 pressure transmitter is ideally suited for pressure measurement applications requiring a compact, rugged pressure transducer. It's 0.25% accuracy makes it well-suited for laboratory and R&D applications where precision pressure measurement is required. The rugged stainless steel body also makes them a great choice for industrial environments.

The LoopView has a 4-digit LED display and 2 keys which allow for quick and easy adjustment of indication range, decimal point position, digital signal filter and user calibration. It's a two-wire 4-20 mA loop-powered indicator that mounts directly on the NP400 and is powered by the current loop so it requires no additional power.

Part Numbers	Pressure Range
NP640-14NPT-1BAR-LVBND	1 Bar / 14.5 PSIG
NP640-14NPT-4BAR-LVBND	4 Bar / 58 PSIG
NP640-14NPT-10BAR-LVBND	10 Bar / 145 PSIG
NP640-14NPT-16BAR-LVBND	16 Bar / 232 PSIG
NP640-14NPT-25BAR-LVBND	25 Bar / 362 PSIG
NP640-14NPT-40BAR-LVBND	40 Bar / 580 PSIG
NP640-14NPT-60BAR-LVBND	60 Bar / 870 PSIG
NP640-14NPT-100BAR-LVBND	100 Bar / 1450 PSIG
NP640-14NPT-160BAR-LVBND	160 Bar / 2320 PSIG
NP640-14NPT-250BAR-LVBND	250 Bar / 3625 PSIG
NP640-14NPT-400BAR-LVBND	400 Bar / 5800 PSIG

SPECIFICATIONS

NP640

Type of Measure: Positive Gauge Pressure
Rangeability: 3:1
Measurement Accuracy: < ±0.25% of the Maximum Range (Max. Range) Including Linearity, Hysteresis and Repeatability, 25°C (1.0 % accuracy for the 100 bar model)
Maximum Thermal Error: <±0.05% Max. Range / °C
Overpressure Range: 2 Times Nominal Pressure
Output Signal: 4-20 mA, 2 Wires
Power Supply : 11 to 33 Vdc
Protection Rating: IP65
Electrical Connector: DIN 43650 (EN 175301-803)
Operating Temperature: -20 to 70 °C / -4 to 158 °F
Dynamic Response: <30 ms
Process Connection (Thread): ¼ NPT
Sensor Style: Polysilicon Piezoresistive (Silicone Oil Filled)
Transmitter Housing: 316L Stainless Steel
Wetted Parts: 316L Stainless Steel

LoopView

Display: 4-digit red LED display
Indicating Range: -1999 to 9999 or 9999 to -1999
Configuration: External push buttons
Accuracy: 0.1 % of span ± 1digit
Sample Rate: 10 measurements/s
Data Back-Up: Non-Volatile EEPROM
Electrical Connection: EN 175301-803 A standard (DIN 43650 form A)
Power Supply: 4-20mA loop powered
Max Current Load: 60 mA
Voltage Drop: Below than 10 mA: < 5.4 V, 10 to 12 mA: < 3.9 V, Higher than 12 mA: < 2.8 V
Operation Temperature: -40 to 85 °C
Dimensions: 42.5 x 52.5 x 40.7 mm
Housing Material: ABS (polyurethane gasket)
Protection Rate: IP65, NEMA4X
Certification: CE, RoHS