ORTEC Logo

 
Home | Applications | Contact Us
Products | Service | Training
Download PDF

Order Online

CryoSecure™ Security System for
Electrically-Cooled Germanium (HPGe) Detectors

  • cryosecure.jpg (9639 bytes)Allows full warm-up before restart after electrical power loss
  • Microprocessor controlled
  • Protection against possible failure due to power outage
  • Wide selection of restarting time intervals
  • LED indicators show system status at a glance
  • Battery backup

PERFORMANCE

INPUT AC VOLTAGE The CryoSecure can accommodate input voltages of 100 V ac to 240 V ac at 47 to 63 Hz.

INPUT CURRENT Typically 7.5 A rms when connected to a 600-watt compressor.

CIRCUIT PROTECTION The input ac power line is protected with a 10-A fuse incorporated into the AC POWER input connector.

INPUTS

AC POWER Rear-panel, international standard IEC power connector, type CEE-22, accepts power cables wired according to local electrical standards. A power cable is shipped with the CryoSecure.

BIAS SHUTDOWN Rear-panel BNC connector accepts Bias Shutdown signal from detector. During normal operation, this signal is passed through a relay contact to allow bias voltage to be applied to the detector. During a Holding State, Warming State, or Cooling State, the Bias Shutdown signal is interrupted preventing bias from being applied to the detector.

OUTPUTS

COMPRESSOR Rear-panel, type NEMA 5-15R AC, provides ac mains voltage to the compressor. A solid-state switch in series controls on/off operation of the compressor.

BIAS SHUTDOWN Rear-panel BNC connector provides Bias Shutdown signal to the detector.

CONTROLS

POWER Front-panel rocker switch turns power on or off. INITIALIZE Front-panel push-button switch begins system operation, and allows the customer to manually cycle through the operating sequences.

HOLD TIME Internal printed wiring board (PWB)-mounted rotary switches (qty. 2) allow user to set the amount of time the CryoSecure waits after a mains power failure, before entering the Warming State.

WARMING TIME Internal PWB-mounted rotary switches (qty. 2) allow the user to set the amount of time the CryoSecure waits after a mains power failure before restarting the compressor.

BIAS OFF Internal PWB-mounted rotary switch allows the user to set the amount of time the CryoSecure waits after restarting the compressor, before allowing the detector bias voltage to be applied.

DEEP DISCHARGE PROTECTION In the event of a long-term power failure, or if the ac mains are turned off for an extended period of time, an internal relay will disconnect the internal circuity from the internal backup battery before the battery discharges. When ac power is restored, the system will resume normal operation and the battery will be recharged.

INDICATORS

AC POWER Front-panel LED indicates presence of ac mains voltage.

BIAS OFF Front-panel LED indicates the bias supply has been shut down.

WARMING Front-panel LED indicates CryoSecure is in the warming phase.

HOLDING Front-panel LED indicates CryoSecure is in the holding phase.

MAINS FAIL Front-panel LED indicates ac mains has failed. CryoSecure is operating from the internal battery.

ELECTRICAL AND MECHANICAL

WEIGHT  Net 2.6 kg (5.8 lb). Shipping 3.2 kg (7.0 lb).

DIMENSIONS 21.5 cm (8.4 in.) W x 26 cm (10.2 in.) D x 10.2 cm (4.0 in.) H. Aluminum enclosure.