MKS Granville-Phillips 358 series, Instruction Manual

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Chapter 2
20
Series 358 Micro-Ion Controller Instruction Manual - 358013 - Rev. B
2.4 Specifications
Table 2-3 Specifications
Micro-Ion System
Pressure Range for N
2
or air
*
Lower Measurement Limit
Upper Measurement Limit < 1 x 10
–9
Torr (1.3 x 10
–9
mbar) (1.3 x 10
–7
pascal) at 4 mA emission
Atmosphere
Controller
Electronic accuracy Typical ± 3% of reading at ambient temperature of 25 ± 5 °C
Display
Units
Update Rate
Digital, green LED, 2 digits plus exponent
Torr, mbar, pascal (user selectable)
0.5 sec. typical as shipped. Internal switch selectable to 3 sec./reading averaged
Filament Control Switch selectable: filament 1, filament 2, or both
Degas Electron bombardment, approximately 4 W with 2 minute timer
Maximum Micro-Ion Gauge
Cable Length
15 m (50 ft) with standard cable
Remote I/O
Gauge and Degas On/Off Inputs
Filament Status Relay Contact Rating
Momentary ground controls filament selection and degas
Less than 0.4 Vdc @ 10
μ
A for 25 msec (minimum). Must be greater than 3.5 Vdc
for 105 msec (minimum) before next low state
Micro-Ion gauge status relay rated at 1.0 A, 30 Vdc
Environment Indoor use
Altitude up to 2000 meters
Temperature 0
°C to 40 °C
Maximum relative humidity 80% for temperatures up to 31 °C decreasing linearly
to 50% relative humidity at 40 °C
Transient overvoltages according to installation category (overvoltage category) II
Pollution degree 2 in accordance with IEC 664
Operating Temperature 0 °C to +40 °C ambient, noncondensing
Non-operating Temperature –40 °C to +70 °C
Analog Output 0 to 10 Vdc, logarithmic, 1 V/decade
Overpressure Protection Gauge turns OFF if pressure rises above factory set upper pressure limit
Emission Current Settings 0.02 mA (MV), 1 mA (HV), 4 mA (UHV)
Operating Voltage and Power 100 to 240 VAC, 50 to 60 Hz, 50 W maximum
Fuse Rating 250 V, 1.6 A, 5 x 20mm Time Lag (T), low breaking capacity
Weight 1.8 kg (4 lb)
*
Measurement limits are determined by the controller emission current setting and X-ray limit of the gauge.