Thiết bị đo lưu lượng khí dòng MASS-STREAM | Bronkhorst Việt Nam

Technical specifications

Measurement / control system

Flow range, based on N2

(intermediate ranges available)            min. 10…200 mln/min

max. 0,1…2 ln/min

Accuracy         ± 1.0% RD plus ± 0.5% FS (at calibration conditions)

Repeatability    < 0,2% FS

Turndown        1:20

Type of gases  almost all gases, compatible with chosen materials

Response time sensor  approx. 0,3 sec.

Operating temperature 0…50°C

Temperature sensitivity            ±0.2% Rd/°C (Air)

Pressure sensitivity      ±0,3% Rd/bar typical (Air)

Leak integrity   tested < 2 x 10-8 mbar l/s He

Attitude sensitivity       at 90° deviation from horizontal max. error 0,2 % at 1 bar typical N2

Warm-up time  30 min. for optimum accuracy,

within 30 seconds for accuracy ±4% FS

Mechanical parts

Sensor  Stainless steel SS 316 (AISI 316L)

Instrument body          Aluminium AL 50ST/51ST (anodised) or stainless steel SS 316

Seals    standard: Viton®; options: EPDM, Kalrez® (FFKM), FDA and USP Class VI approved compounds

Sieves and rings           Teflon or stainless steel SS 316

Pressure rating 10 bar g for instrument body in aluminium, 

20 bar g for instrument body in stainless steel SS 316

Process connections     G1/4" / compression type or face seal couplings

Ingress protection

(housing, optional display)

IP65

Electrical properties

Power supply    +15…24 Vdc ±10%

Current peak values Meter         approx. 75 mA at 0% flow

approx. 125 mA at 100% flow

Current peak values Controller  add 250 mA

add 30 mA for display, if applicable

add 50 mA for additional interface, if applicable

Analog output/command             0...5 (10) Vdc or 0 (4)…20 mA

(sourcing output)

Digital communication   standard: RS232

options: PROFIBUS DP, DeviceNet™, Modbus-RTU, FLOW-BUS

Electrical connection

Analog/RS232    8 DIN (male);

PROFIBUS DP     bus: 5-pin M12 (female);

power: 8 DIN (male)

Devicenet™        5-pin M12 (male)

Modbus-RTU/FLOW-BUS             5-pin M12 (male)