Product name: FLOWSIC550 ultrasonic flowmeter

Measuring principle: Ultrasonic transit time difference measurement

Application: High-pressure gas flowmeter for natural gas distribution

Measured variables:

Volume a. c.

Volumetric flow a. c.

Gas velocity

Volume s. c. (*)

Volume flow under s. c. (*)

(*) additional function included with integrated volume correction

Measuring medium: Natural gas (dry, odorized), air

Nominal pipe size: DN 50 (2″) to DN 150 (6″)

Medium temperature range: –40 °C to +70 °C

Operating pressure range:

ANSI 300 (ASME B16.5): up to 48.7 bar(g)

ANSI 600 (ASME B16.5): up to 97.4 bar(g)

PN 40 (EN 1092-1): up to 40 bar(g)

PN 63 (EN 1092-1): up to 63 bar(g)

Repeatability: ≤ 0.1 %

Accuracy:

Qmin up to Qmax: ≤ ±1 %; Accuracy class 1; typical error limits

Qmin up to 0.1 Qmax: ≤ ±2 %; Accuracy class 1; maximum allowed error limits

0.1 Qmax up to Qmax: ≤ ±1 %; Accuracy class 1; maximum allowed error limits

After high pressure flow calibration: ±0.2 % at test pressure; otherwise ±0.5 %

Metrological approvals and certificates:

MID: 2014/32/EU

OIML R 137-1&2:2012

EN 12405:2010 (for integrated volume correction)

AGA 9, 2022

Hazardous area approvals:

IECEx: Ex ia [ia Ga] T4 IIB Gb

ATEX: II 2 (1)G Ex ia [ia Ga] T4 IIB Gb

NEC/CEC (US/CA):

Class I Division 1, Groups C, D T4 Ex ia [ia Ga] IIB T4 Gb

Class I, Zone 1 AEx ia [ia Ga] IIB T4 Gb

Digital outputs:

2x Pulse and Status (HF with fmax = 2 kHz, LF with fmax = 10 Hz)

2x RS485, external powered

Encoder

HF pulses + malfunction, electrically isolated (fmax = 2 kHz)

Encoder + LF pulses, electrically isolated (fmax = 100 Hz)

Encoder + HF pulses, not electrically isolated (fmax = 2 kHz)

2x pulses, HF and LF, electrically isolated (fmax = 2 kHz / 100 Hz)

Digital communication:

Modbus RTU

Modbus ASCII

Device properties:

Diagnostics and permanent operational self-monitoring

Durable and reliable without moving parts

Compact meter installations

Integrated volume correction

Battery or intrinsically safe power supply

Bluetooth Low Energy (BLE)

Benefits:

Ultimate measurement certainty and safety of continuous gas supply

Simple installation, replacement of turbine gas meters

Reduction of installation costs due to integrated volume correction

Easy commissioning and data reading via FLOWgateTM (PC and App)

Minimal operating costs due to being nearly maintenance-free

Reliable even when the gas flow fluctuates (on/off applications)

Self-sufficient operation possible

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