MADDALENA ULTRASONIC FLOW METER K-BULK

MADDALENA ULTRASONIC FLOW METER K-BULK

K-BULK is the ultrasonic flow sensor designed for precise thermal energy measurement in centralized heating and cooling systems.

K-BULK ULTRASONIC FLOW METER

K-BULK is the ultrasonic flow sensor designed for precise thermal energy measurement in centralized heating and cooling systems. The measuring element, with no moving parts, ensures long-term reliability even under harsh operating conditions. The metallic body with IP68 protection includes battery-powered electronic (10+1 years lifetime), making the device suitable for humid or demanding environments. Thanks to the dual ultrasonic paths and compatibility with Maddalena KS3C calculators and KPTEG probes, K-BULK guarantees maximum accuracy and interoperability in direct metering systems.

  • Dual-path ultrasonic measurement principle
  • DN: 50 ÷ 300 • Accuracy class: 2 (EN 1434)
  • Environmental class: C – indoor use
  • Mechanical class M2 and electromagnetic class E2
  • Protection rating IP68 (electronic unit and sensor)
  • Power supply: battery (10 + 1 years lifetime)
  • Installation: U0–D0, any position
  • Open-drain synchronous pulse output
  • 3 m cable, max voltage 12 V DC, max current 10 mA DC
  • Available with multiple pulse-resolution options (1/10 – 1/100 L)

GENERAL TECHNICAL DATA

Measurement method Ultrasonic; time of flight (TOF)
Accuracy class (MID) Class 2
Environmental class Class C
Mechanical class M2
Electromagnetic class E2
Storage temperature -20°C ÷ +60°C
Protection class IP68
Power supply 3.6 V battery
10+1 years (default)
Module B nr. DE-24-MI004-PTB0005
Module D nr. 0119-SJ-A010-08

FLOW SENSOR TECHNICAL DATA

Installation position Any U0-D0
Sampling frequency 4 Hz
Flow range 1:100
Temperature range +1°C ÷ +130°C
Recommended temperature range for heating applications +10°C ÷ +130°C
Maximum temperature 150°C for 2000 hours
Maximum overload 1,25 x qₚ
Nominal pressure PN16 – PN25

PULSE OUTPUT TECHNICAL DATA

Type Open drain
Pulse length 100 ms
Pulse type Synchronous
Pulse options DN50 ÷ DN100: 1/10L DN125 ÷ DN300: 1/100L
Cable length 3 m
Voltage Max: 12 Vdc
Current Max: 10 mAdc
Closed-contact resistance 100 Ω
Maximum output pulse frequency 10 Hz

OVERALL DIMENSIONS

Diameter mm 50 65 80 100
Inches 50 65 80 100
PN16 PN25 PN16 PN25 PN16 PN25 PN16 PN25
L mm 200 270 200 300 225 300 250 360
H mm 221 229 253 281
D mm 165 185 200 220 235
K mm 125 145 160 180 190
B mm 120 135 165 180 212 200
nxΦL mm 4xΦ18 4xΦ18 8xΦ18 8xΦ18 8xΦ18 8xΦ18 8xΦ22
Weight kg 8,00 9,50 8,50 11,50 11,80 16,00 15,00 21,00

 

Diameter mm 125 150 200 250 300
Inches 125 150 200 250 300
PN25 PN25 PN25 PN25 PN25
L mm 350 350 350 400 450
H mm 370 400 459 520 575
D mm 270 300 360 425 485
K mm 220 250 310 370 430
B mm n/a n/a n/a n/a n/a
nxΦL mm 8xΦ26 8xΦ26 12xΦ26 12xΦ30 16xΦ30
Weight kg 13,68 18,90 38,19 57,56 78,52