Compare Model Drawings, CAD & Specs Fitting Type Interface Electrical Connector Relays Display Availability Price
$514
NW16 ISO-KF RS232/analog 9-pin, D-sub male 1 No
vacuum transducer with display
$683
NW16 ISO-KF RS232/analog 9-pin, D-sub male 1 Touch-screen
$493
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$661
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 0 Touch-screen
$536
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$704
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 3 Touch-screen
$493
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$634
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 0 Touch-screen
$536
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$678
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 3 Touch-screen
$503
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$671
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 0 Touch-screen
$546
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$716
NW16 ISO-KF RS232/analog 15-pin, High Density, D-sub male 3 Touch-screen
$503
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$645
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 0 Touch-screen
$546
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$689
NW16 ISO-KF RS485/analog 15-pin, High Density, D-sub male 3 Touch-screen
$531
0.125 in. NPT male RS232/analog 9-pin, D-sub male 1 No
vacuum transducer with display
$699
0.125 in. NPT male RS232/analog 9-pin, D-sub male 1 Touch-screen
$508
0.125 in. NPT male RS232/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$650
0.125 in. NPT male RS232/analog 15-pin, High Density, D-sub male 0 Touch-screen
$553
0.125 in. NPT male RS232/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$695
0.125 in. NPT male RS232/analog 15-pin, High Density, D-sub male 3 Touch-screen
$508
0.125 in. NPT male RS485/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$677
0.125 in. NPT male RS485/analog 15-pin, High Density, D-sub male 0 Touch-screen
$553
0.125 in. NPT male RS485/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$695
0.125 in. NPT male RS485/analog 15-pin, High Density, D-sub male 3 Touch-screen
$546
4 VCR female RS232/analog 9-pin, D-sub male 1 No
vacuum transducer with display
$689
4 VCR female RS232/analog 9-pin, D-sub male 1 Touch-screen
$525
4 VCR female RS232/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$667
4 VCR female RS232/analog 15-pin, High Density, D-sub male 0 Touch-screen
$569
4 VCR female RS232/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$711
4 VCR female RS232/analog 15-pin, High Density, D-sub male 3 Touch-screen
$526
4 VCR female RS485/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$668
4 VCR female RS485/analog 15-pin, High Density, D-sub male 0 Touch-screen
$569
4 VCR female RS485/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$711
4 VCR female RS485/analog 15-pin, High Density, D-sub male 3 Touch-screen
$541
8 VCR female RS232/analog 15-pin, High Density, D-sub male 0 No
vacuum transducer with display
$710
8 VCR female RS232/analog 15-pin, High Density, D-sub male 0 Touch-screen
$586
8 VCR female RS232/analog 15-pin, High Density, D-sub male 3 No
vacuum transducer with display
$728
8 VCR female RS232/analog 15-pin, High Density, D-sub male 3 Touch-screen
vacuum transducer with display
$683
8 VCR female RS485/analog 15-pin, High Density, D-sub male 0 Touch-screen
vacuum transducer with display
$728
8 VCR female RS485/analog 15-pin, High Density, D-sub male 3 Touch-screen

Product Options

Description
  925 Vacuum Transducer, Micro Pirani™, 1.0x10-5 to 760 Torr

Specifications

  • Sensor
    MicroPirani™ (MEMS Thermal Conductivity)
  • Digital Communication
    RS485/RS232 (4800 to 230400 Baud)
  • Relays
    3 relays SPDT(Optional)
  • Installation Orientation
    Any
  • Measurement Range
    1.0 x 10-5 Torr to Atmosphere
  • Set Point Range
    5.0 x 10-4 Torr to 500 Torr
  • Calibration Gas
    Air, Argon, Helium, Nitrogen, Hydrogen, H2O vapor, CO2, xenon, Neon
  • Operating Temperature
    0° to 40°C (32° to 104°F)
  • Maximum Bakeout Temperature
    85°C (185°F), non-operating
  • Digital Controls
    Zero adjust, atmosphere adjust, pressure units, baud rate, address, factory default, gas type; set point functions: value, hysteresis, direction, enable analog output transducer status, switch, LED test
  • Digital Status
    Pressure reading and units, set point, operating time, transducer temperature, user tag, model, device type, serial number, firmware and hardware versions part number, manufacturer
  • Analog Output
    1 to 9 VDC, 100Ω maximum output impedance, 1 volt/decade
  • Analog Output Resolution
    16 bit
  • Relay Contact Rating
    1 A @ 30VAC/DC, resistive
  • Relay Response
    <100 msec maximum
  • Power Requirements
    9 to 30 VDC, < 1.5 watts max
  • Accuracy
    5 x 10-4 to 10-3 Torr ±10% of reading
    10-3 to 100 Torr ±5% of reading
    100 Torr to atm ±25% of reading
  • Repeatability
    10-3 to 100 Torr ± 2% of reading
  • Overpressure Limit
    3000 Torr absolute
  • Internal Volume
    (KF16) 2.80 cc
  • Exposed Materials
    304 stainless steel, Silicon, SiO2, Si3N4, Gold, Viton®, Low out gassing epoxy resin
  • Electronic Casing and Flange
    304 stainless steel
  • Weight
    170 g (KF 16)
  • Compliance
    CE

Features

Micro Pirani™ Sensor Technology

The 925 Transducer offers a wide measurement range from 1x10-5 Torr to atmosphere that is based on measurement of thermal conductivity. The MicroPirani sensor consists of a silicon chip with a heated resistive element forming one surface of a cavity. A cover on top of the chip forms the other surface of the cavity. Due to the geometry of the sensor, convection cannot take place within the cavity and consequently, the sensor is insensitive to the mounting position. Gas molecules are passed by diffusion only to the heated element where the heat loss of the gas is measured.

Common Gas Calibrations

Like all thermal conductivity sensors, the 925 is sensitive to gas type. To compensate for gas dependency, the MicroPirani has a number of common gas calibrations that can be selected via the digital interface. This makes it a simple solution for locating medium to fine leaks in vacuum systems. Calibration gases include: Air, Argon, Helium, Nitrogen, Hydrogen, H2O vapor, CO2, Xenon, and Neon.

Analog Pressure Output

The 925 also has a analog pressure output of 1VDC/decade that can be interfaced to external analog equipment for pressure readout or controlling. Other analog outputs and curves can be selected via the digital user interface.

Process Control Relays

The 925 has up to three mechanical relays which can be used for process control, examples are interlocking valves or pumps.

Optional Integrated Touch-screen Display

The optional integrated touch-screen display is user configurable; the user can change pressure units, orientation and has access to set point parameters as well as gas type. The display also indicates the status of the available set point relays. Displayed pressure reading from individual sensors or combined reading can be seen from >5 meters away on the high contrast display.

PDR900 Power Supply & Display

The PDR900 power supply and readout unit is a stand alone, single channel controller for use with the Series 900 digital vacuum transducers. It can be used as a stand-alone power supply readout unit or as a tool for configuration, calibration and diagnostics of system integrated transducers in OEM applications.

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