BU-1 (RO-R ASPZ) Mine intrinsically explosion-proof wireless control unit

When equipped with a level sensor, the BU-1 (RO-R ASPZ (РО-Р АСПЗ)) is mounted on fire-extinguishing modules — MPP (МПП) and MUPTV (МУПТВ) — and is intended to monitor their status, initiate actuation, and execute control commands from the ASPZ (АСПЗ). Acting as a functional component of the PPKUP (ППКУП), it communicates with it via a wireless radio interface compliant with the IEEE 802.15.4 specification.

General characteristics:

Explosion protection marking	RO Ex ia I Ma
Operating temperature, °C	from minus 20 to plus 60
Degree of protection against external influences	IP65
Electric shock protection class	III
Power supply	battery – 2 pcs (main and backup)
Battery type	Li-SOCl₂
Rated battery capacity, A·h: – main ER26500 «EEMB»* – backup ER14505 «EEMB»*	9.0; 2.4
Rated supply voltage, V	3.6
Power consumption, W, not more than	0.1
Standby operation time from the main battery, months, at least	36
Connection interface	wireless radio interface IEEE 802.15.4
Maximum IEEE 802.15.4/ZigBee communication range (line of sight), m	300
Mounting	bracket
Overall dimensions, mm	208 × 120 × 55
Weight, kg	1.0

* – The use of batteries of another type is permitted only after approval by the Certification Body.

Application area

Underground workings of mines and pits, and their surface structures, including those hazardous due to gas and dust, in accordance with the explosion protection marking, operating conditions, and the requirements of industry safety regulations.