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ISOVOLT 3003

Industrial X-ray Equipment

Utilizing medium-frequency converter, IGBT technology in the power module, SMD technique, LCD display, softkeys and the possibilities of integration into computer-controlled X-ray systems; a memory for operating data are unique features of the ISOVOLT 3003.

The use of the medium-frequency converter technique entails high stability, low weight, small dimensions and low power consumption.

The employment of a microprocessor offers increased operation safety, dialogue capability, user-comfort and easy servicing (history memory and modem support).

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Features

Stand-By Operation

This mode is selected via the key-operated switch of the control module. The supply voltage of the IV 3003 remains switched on and the cooling system continues to be active. Any build-up of condensation water in the power electronics is prevented via thermostatic control.

In this mode the system remains at operating temperature, but cannot be operated since all entries are inhibited.

Since the key can be withdrawn in this position, operation of the IV 3003 by unauthorized personnel is impossible.

Cooling System

The cooling water temperature* and the cooling water flow rate are constantly monitored when X-ray is switched on to ensure the protection of the X-ray tube. The temperature is monitored via a thermostat. The flow rate is monitored via a fail-safe water turbine flow rate monitor. In case of the use of a cooling pump the water turbine flow rate monitor is integrated in the pump.

Automatic Tube Warm-up

To reach the desired operating values, the X-ray tube is warmed up automatically thus extending its life time.

The non-operational interval is established from the operating values run thus far and from the data of the built-in real time clock.

Switch-Off

Upon switch-off of the equipment the last-selected values for voltage, current and operating mode are kept until the next switch-on.

Safety Devices

  • Fail-safe circuit for HV-lamp (“High Voltage ON” in front panel)
  • External warning lamp with fail-safe circuit (option)
  • Double high-voltage relays with serially switched contacts
  • EMERGENCY-OFF palm button switches, can be linked to external EMERGENCY-OFF switches
  • Two door contact connections, acting upon one high voltage relay each

Protective Devices

The power limits of 8 tube types can be programmed; the tube parameters can be freely selected. The following tube parameters are selectable via menu:

  • Voltage limit
  • Power limit
  • Filament current limit

During operation the following control functions are activated:

  • Relative overvoltage and undervoltage switch-off
  • Absolute overvoltage and undervoltage switch-off
  • Relative overcurrent switch-off
  • Absolute overcurrent and undercurrent switch-off
  • Power control
  • Cooling circuit control for water flow
  • Temperature control for high voltage generator and power electronics

Modes of Operations

The following modes of operation can be selected:

  • Constant Current Mode
    The X-ray tube is operated at the operating values preset for voltage, current and - if necessary - exposure time.
  • Constant Wattage Mode
    The X-ray tube is operated at the operating values preset for voltage and - if necessary - exposure time. The tube current is automatically set at the value which the tube output permits with a given high voltage.
  • Programmed Mode
    This mode constitutes a considerable help in frequently recurrent inspection tasks. The possibility of wrong entries is reduced to a minimum.
    The operator calls up all X-ray parameters via a program number.

    For each program the parameters set for tube voltage, tube current, exposure time, focal spot size and tube type are stored under a number.

Applications

  • Aerospace (Manufacturing, On-wing inspection)
  • Oil & Gas (Plant construction, Asset management, On-stream inspection)
  • Power Generation (Plant construction, Asset management)
  • Automotive (Component manufacturing, Assembly inspection)

Specifications

High Voltage Generator

Maximum output voltage 60 kV
Maximum output current 80 mA
Maximum output power 3,5 kW
Shunt and discharge resistance 600 MΩ ±1% TK25

Tube Voltage

Preselection and setting Digital or quasi-continuous from 2 to 60 kV in steps of 0.1 kV
Setpoint value display Digital, 4 digits
Actual value display Digital, 4 digits
Display accuracy ± 0.1 kV
Absolute accuracy ± 1.5%
Repeat accuracy ± 0.01% at constant temperature level
Temperature drift < 100 ppm/C

Tube Current

Preselection and setting Digital or quasi-continuous from 2 to 80 mA in steps of 0.1 mA
Setpoint value display Digital, 3 digits
Actual value display Digital, 3 digits
Display accuracy ± 0.1 mA
Absolute accuracy ± 1%
Repeat accuracy ± 0.01% at constant temperature level
Temperature drift < 100 ppm/ C

Exposure Time

The equipment has one programmable timer with a non-volatile memory.

Preselection and setting Digital setting from 0.1 to 99.9 minutes
Setpoint value display Digital, 3 digits
Actual value display Digital, 3 digits; the remaining time is displayed,
(i.e. after a mains failure exposure can be continued without any time error.)

Prewarning Time

Preselection and setting Digital setting from 2 to 250 seconds or de-activated

Programmed Mode

Number of storable programs 250
Tube Parameters (Limit Data)
Number of memory locations
for tube parameters
8, with digitally assigned tube limit data, e.g. nominal voltage,
limit filament current, anode power dissipation

Technology

20 kHz IGBT technology for high voltage circuit and filament current circuit

Emitted interference Per EN 55011A, Class A
Immunity to interference Per IEC 801-2/1991, 801-3/1984, 801-4/1988

Connected Loads and Mechanical Dimensions

Power connection 1/N~ 230 V ±10%, 50/60 Hz
Power consumption 4150 W at 60 kV, 58 mA
Max. mains current 24 A
Main fuse 32 A (as per VDE)
Ground terminal 6 mm² Cu
Type of protection Per EN 60529, IP00 (rack mount), IP32 (desk-top)
Cooling water connection 3/4 inch
Cooling water consumption Minimum 3.5 l/min, minimum 4.5 bar, maximum 7 bar,
at outlet point pressure-free
Cooling water temperature > dew point < 25° C
Dimensions 483 mm x 266 mm x 680 mm (WxHxD), 19“ (48 cm) rack mount
Weight ~57 kg

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