SAG-A

Système d’Alarme Gamma Autonome

This devices is designed to measure the dose rate, especially for nuclear power plant workers. The SAG-A beacon is designed to be as robust as possible. Its cylindrical shape and its bumpers allows a maximal shock and 1.6m drop absorption. The polycarbonate body can withstand repeated hammer hits. IP65 means that SAG-A is totaly protected againt dust and water projection in any direction. The SAG-A beacon is design to be able to temporary float.

Documentation

Technical characteristics

Detection characteristics

Type: Ambient gamma EDR H*(10) monitoring device
Reference radionuclide: Cs 137
Effective range: 0.010 mSv/h to 99.9 mSv/h
Display range: 0.001 mSv/h to 99.9 mSv/h
Response time: < 2 s on all the measurement range
Energy range: From 50 keV to 1.5 MeV

Alarm characteristics

PV overdue: “PV” and malfunction alarm
Various indications: Low battery, charge, remote measurement display, power supply connected by a LED on the front side
Probe saturation: ‘SAT’ display
Probe malfunction: ‘SENSOR FAULT’ display
Visual alarm: 3 warning light towers (green, yellow and red)
Sound alarm: Buzzer > 85 dBA at 30 cm
Threshold: 1.6 mSv/h factory pre-set and configurable via key switch

Electrical characteristics

Battery life: up to 40 days
Charger: 12 V identical to that of the LED Precaution signs
Charging time: About 1 day (may be used while charging)

Connectivity

Relays: 3 dry relay contact outputs (On, Failure, Alarm):
- 40 W with 48 VDC
- 60 VA with 24 VAC max - on resistive charge
Network connectivity: 2 x 2 RS 485 Modbus/Jbus (EDF beacon supervision compatible)