*B

Here’s a list of Instrumentation abbreviations starting with the letter “B”, commonly used in P&IDs, datasheets, control systems, and field instrumentation.

B: Binary / Burner / Bar (pressure) (context dependent)
BA: Breathing Air / Bias Adjust
BAC: Burner Automatic Controller
BAD: Burner Air Damper
BAF: Burner Air Fan
BAG: Bag Filter
BAL: Balance
BAS: Building Automation System
BAT: Battery
BAV: Ball Valve
BB: Bus Bar / Bleed Block
BBP: Bubble Point Pressure
BBV: Ball Block Valve
BC: Batch Controller / Binary Counter
BCC: Burner Control Cabinet
BCL: Burner Control Logic
BCM: Burner Control Module
BCP: Booster Compressor / Booster Pump
BD: Blowdown
BDC: Blowdown Controller
BDF: Burner Draft Fan
BDP: Blowdown Pressure
BDV: Blowdown Valve
BE: Bucket Elevator
BEL: Bellows
BF: Blower Fan
BFC: Burner Flame Controller
BFD: Block Flow Diagram
BFP: Boiler Feed Pump
BFS: Burner Fuel Shutoff
BG: Burner Gas
BGC: Burner Gas Controller
BGM: Burner Gas Manifold
BH: Brake Horsepower
BI: Binary Input
BIC: Binary Input Card
BIL: Binary Interlock Logic
BIS: Burner Interlock System
BK: Backup
BL: Block / Bleed Line
BLC: Block Logic Controller
BLD: Blowdown
BLR: Boiler
BM: Burner Management
BMC: Burner Management Controller
BMS: Burner Management System
BN: Batch Number
BO: Binary Output
BOC: Binary Output Card
BOP: Balance of Plant
BP: Back Pressure / Boiling Point
BPC: Back Pressure Controller
BPD: Barometric Pressure Detector
BPR: Back Pressure Regulator
BR: Burner / Bridge Rectifier
BRC: Burner Relay Controller
BS: Burner System / Binary Switch
BSC: Burner Safety Controller
BSD: Burner Shutdown
BSL: Burner Safety Limit
BSV: Burner Shutoff Valve
BT: Batch Timer / Battery
BTD: Burner Trip Device
BTP: Boiler Trip Protection
BU: Backup
BV: Block Valve / Ball Valve
BVC: Block Valve Controller
BW: Boiler Water
BWD: Boiler Water Drum
BWT: Boiler Water Treatment
BYP: Bypass