Endress+Hauser FLOWSIC600-XT ultrasonic flowmeter
007104-HW-ENDRESS-004
Overview
The FLOWSIC600-XT is a high-precision ultrasonic gas flowmeter designed for custody transfer and critical gas measurement applications, offering exceptional accuracy, long-term stability, and advanced diagnostics with support for up to 30% hydrogen blending.
Measuring principle
Ultrasonic transit time difference measurement
Measured variables
Volumetric flow a. c., volume a. c., gas velocity, Speed of sound, optional volume correction via integrated, electronic volume corrector (EVC)
Measuring Medium
Natural gas (with up to 30% hydrogen), air, natural gases containing increased levels of CO2, N2, H2S, O2, H2
Repeatability
≤ 0.05 % of the measured value (typical)
Accuracy
4-path and 8-path version ≤ ± 0.5 % | (≤ ± 1%) Dry-calibrated
4-path and 8-path version ≤ ± 0.2 % | (≤ ± 0.5%) After flow calibration and alignment using constant factor. Without the calibration uncertainty of the test bench.
4-path and 8-path version ≤ ± 0.1 % | (≤ ± 0.2%) After flow calibration and alignment using polynomial or piecewise correction. Without the calibration uncertainty of the test bench.
Medium temperature range
–46 °C ... +180 °C / -51 °F ... +356 °F
On request:–194 °C ... +280 °C / –381 °F ... +536 °F
Operating pressure range
0 bar (g) ... 450 bar (g) 0 psi (g) ... 6527 psi (g)
Nominal pipe size
3 ″ ... 56 ″
(DN 80 ... DN 1400), other nominal pipe sizes on request
Metrological approvals and certificates
OIML R 137-1&2:2012 (class 0.5)
OIML D 11:2013
ISO 17089-1
AGA-Report Nr. 9
MID: 2014/32/EU
PED: 2014/68/EU
ASME: B16.5, B16.47 A/B
ATEX: 2014/34/EU
EMC: 2014/30/EU
GOST 8.611-2013
GOST 8.733-2011
CPA: JJG1030-2007
PCEC: GB 3836.1-2010, GB 3836.2-2010, GB 3836.4-2010, GB/T 3836.22-2017
Hazardous area approvals
IECEx
Ex db ia op is [ia Ga] IIA/IIC T4 Gb
Ex db eb ia op is [ia Ga] IIA/IIC T4 Gb
Ex ia op is IIA/IIC T4 Ga
ATEX
II 2 (1) G Ex db ia op is [ia Ga] IIA/IIC T4 Gb
II 2 (1) G Ex db eb ia op is [ia Ga] IIA/IIC T4 Gb
II 1G Ex ia op is IIA/IIC T4 Ga
NEC/CEC (US/CA)
Explosion-proof / non-incendive:
CI I, Div. 1 Group D, T4 / Ex d ia [ia Ga] IIA T4 Gb / Cl I, Zone 1 AEx d ia op is [ia Ga] IIA T4 Gb
CI I, Div. 1 Groups B, C, D, T4 / Ex d ia [ia Ga] IIC T4 Gb / Cl I, Zone 1 AEx d ia op is [ia Ga] IICT4 Gb
Intrinsically safe:
CI I, Div. 1 Group D T4 / Ex ia IIA T4 Ga / Cl I, Zone 0, AEx ia op is IIA T4 Ga
CI I, Div. 1 Groups A, B, C, D, T4 / Ex ia IIC T4 Ga / Cl I, Zone 0, AEx ia op is IIC T4 Ga
Digital Outputs
4 outputs: 2 x status, 2 x pulse:
≤ 30 V, 50 mA
Passive, electrically isolated, open collector or conforming to NAMUR (DIN EN 60947-5-6), fmax = 10 kHz(scalable)
Digital communication
Modbus TCP
Built for the highest standards in natural gas transport, storage, and custody transfer, the FLOWSIC600-XT meets OIML R137 Class 0.5 and AGA9 requirements across multiple path configurations. Equipped with i-diagnostics™ for intelligent monitoring and PowerIn Technology™ for up to three weeks of autonomous operation, it ensures continuous, reliable measurement—even during power loss. With automatic compensation for pressure and temperature effects, easy integration, quick commissioning, and full compatibility with hydrogen-enriched natural gas, it delivers consistently low uncertainty and maximum data availability across all operating conditions.