Blackbox

The Blackbox 130 is a compact, low-cost, intelligent controller that offers non-contacting level measurement. Available as a wall mount option with an integral display allowing users to locally program the unit giving an instant indication of level. The Blackbox 130 unit features a 4-20mA output, and two alarm or control relays.
Economical and easy to operate, Blackbox units can be set-up using the integral keypad on the controller and optional interface cable. Benefitting from reliable digital echo processing (DATEM) the unit is able to produce accurate and repeatable level measurement. Compatible with all dB Transducers and mmWAVE Radar sensors, the unit is able to measure from 125 mm (0.41 ft) right through to 40 m (130 ft).
Spec:
Description:
Weight
0.65 kg to 0.75 kg (1.4 lbs to 1.65 lbs)
Cable entry detail
Underside fitted with 3 x M20, nylon cable glands suitable for 0.23 in to 0.47 in (6 mm to 12 mm) cable 
Max and Min Temperature 
-20 ºC to +55 ºC (-4 ºF to +131 ºF)
Analog Output 
Isolated or non-isolated output of 4-20mA or 0-20mA into 1 kΩ (user programmable and adjustable) 0.1% resolution
Digital Output 
RS232 for programming and data extraction
Display
2 x 12 alpha numeric
Power supply 
115 V AC +5% / -10% 50/60 Hz, 230 V AC +5% / -10% 50/60 Hz, 10-28 V DC, 10 W maximum power (typically 5 W)
Fuses 
50 mA at 230 V AC, 100 mA at 115 V AC