Ion Gauge Controller

NGC2D Bayard-Alpert Ion Gauge Controller

£950.00 excl. VAT and transportation cost

The NGC2D is a high-accuracy Ion Gauge controller that offers integrated pressure measurement and process control; with a large, clear display, an intuitive user interface and serial communications.

Overview

  • Continuous measurement range: 1 x 10-3 mBar to 3 x 10-11 mBar
  • Controls 2 Ion gauges (sequentially), 2 AML Pirani gauges and 1 Capacitance Manometer
  • Bright green LED display shows bar-graph or numeric pressure, trend, diagnostics, etc.
  • Display in mBar, Torr or Pascal. Permanent bar-graph of Pirani pressures.
  • Customizable gauge labels
  • Simple, guided setup is re-entrant and can be password protected
  • Automatic or manual emission current setting
  • Ion gauge sensitivity adjustable 1 mBar-1 to 140 mBar-1
  • Automatic start of Ion gauge in pump-down and can be interlocked by Pirani or external signal
  • Manual and automatic electron-bombardment degas programs
  • 4 power relays for process control (5 A, 240 V) flexibly assignable to gauges with programmable hysteresis
  • System bakeout program with control of temperature, time & over-pressure limit. Integral K-thermocouple amplifier
  • Automatic control of titanium sublimation pump controller with optional countdown/cancellation of imminent firing
  • RS-232C interface for data-logging and control
  • Recorder output 1.0 volt/decade
  • 1U high full-width, steel cased instrument for easy rack-mounting
  • Operates from 100 V to 240 V, 50/60 Hz supply
Order Code Description Price £
NGC2D Ion Gauge Controller950.00

Ionization Gauge

AML AIG1xG are recommended. Bayard-Alpert gauges from many other manufacturers are suitable without adjustment other than sensitivity.

Range:

From 1 x 10-3 to below 3 x 10-11 mbar with a UHV gauge-head with tungsten filaments. The low limit is dependent on gauge-head, cable construction and length and conditions of use. The upper limit is determined by the acceptable life of the filament and may be extended by the use of thoria or yttria-coated iridium filaments.

Accuracy and repeatability:

Determined principally by the gauge-head: controller errors are much smaller. Emission at 0.5 mA is recommended. Electrometer logarithmic conformance at 21°C, <1% 1 mA to 10 pA, <10% 10 pA to 2 pA.

Gauge supplies:

Grid: +200 volts in emission, +500 volts at ≤60 mA in degas.
Filament: +50 volt bias, ≤12 volts at ≤4.2 A (Tungsten) ≤2.6 A (Iridium) with filament power limited at > 30 watts.

Pirani Gauge

AML types PVU and PVB.
A constant-voltage bridge circuit reduces contamination at high pressures. AML Pirani gauge-heads may be exchanged or extension leads may be connected without adjustments being necessary.

Capacitance Manometer

Gauges of any manufacture having a +10 volt full-scale output at 1, 10, 100 or 1000 mbar or Torr and which are self-powered are suitable. Pressure indication can be in units different to the full-scale units defined for the Gauge.

General Specifications

Pressure display:

Scientific notation (1 or 2 decimal place resolution) or bar-graph displays in mBar, Torr or Pascal.

Operating temperature:

5°C to 35°C for specified performance. Incoming air temperature is measured and displayed and operation is inhibited at >40°C.

Supply voltage:

100 V to 240 V nominal at 48 to 65 Hz, without adjustment.

Power consumption:

<20 watts idling, <75 watts in emission.

Dimensions:

1U high, full width x 270 mm Deep

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