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948A-5 Remote Alarm/Indicator

 Remote Alarm/Indicator
Introduction
Remote alarms are available for area and process monitors to provide a visual/audible indication of a high alarm state. Remote alarm units are also available with an analog meter scale that indicate in the range of 0 to 107 CPM or various mR/h ranges.

Remote alarms for process and area monitors are driven by the associated ratemeter or Model 960 Local Control Unit, which provides both the analog signal (for the meter) and the alarm signal (for the visual and the audible indication). For ion chamber area monitors, the remote alarm can be electrically driven by the digital preamplifier.

The Model 948A-5 is a Remote Alarm/Indicator. It continuously indicates the level of radiation at the detector site and provides both audible and visual indications of a high radiation level.

The remote alarm/indicator is an optional component of the Model 945A Area Monitoring System. A typical area monitoring system consists of the following instruments: a Model 977 Series Wide Range Ion Chamber Detector, a Model 946A Universal Digital Ratemeter and a Model 948A-5 Remote Alarm/Indicator.

The remote alarm/indicator has a horn, light and analog meter mounted on the front panel. The indicator continuously indicates the level of radioactivity measured at the detector site. The scale is calibrated from 0.1 to 107 mR/h. The horn and light actuate when the radiation level at the detector site exceeds the high alarm set point of the ratemeter. The Model 948A-5 Remote Alarm/Indicator also contains two terminal blocks for field wiring connections.

Features

  • Easy to read visual indicators
  • Informs personnel to any change in radiological condition
  • Analog meter, scaled to range of ratemeter
  • Audible alarm (most with silence pushbutton) alerts operators of increasing radiation in monitored area or process stream
Product Specifications
Power requirements
 12 VDC for horn and light and 0 to 10 VDC for meter (both signals supplied by the detector preamplifier)
Field cable
 Model 50-195
Maximum field cable length
 1500 ft (457 m)
Environmental
Operating temperature  32° to 122°F (0° to 50°C)
Storage temperature  32° to 122°F (0° to 50°C)
Relative humidity  0 to 95%, non-condensing
Dimensions
 8 (w) x 4 (d) x 10.25 in (h) (20.3 x 10.2 x 26 cm)
Weight
 8 lb (3.6 kg)
Model NameDescription
948A-5Remote Alarm/Indicator

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