SICK FLOWSIC500 Custody Transfer Measurement

Ultrasonic transit time difference measurement

Volume a. c., volumetric flow a. c., gas velocity, volume s. c. (*), volume flow under s.c. (*)
(*) additional function included with integrated volume correction

Natural gas (dry, odorized)

≤ 0.1 %

Qmin up to 0.1 Qmax ≤ ± 1 %
 
0.1 Qmax up to Qmax ≤ ± 0.5 %
Accuracy class 1; maximum allowed error limits
 
Qmin up to 0.1 Qmax ≤ ± 2 %
 
0.1 Qmax up to Qmax ≤ ± 1 %
After high pressure flow calibration: ±0.2 % at test pressure; otherwise ±0.5 %

-25 °C ... +60 °C
Optional: –40 °C ... +70 °C
 
(–13 °F ... +140 °F
Optional: –40 °F ... +158 °F)

PN16 (EN 1092-1): 0 bar (g) ... 16 bar (g) / 0 psi(g) ... 232 psi(g)
 
Class 150 (ASME B16.5): 0 bar (g) ... 20 bar (g) / 0 psi(g) ... 290 psi(g)

DN 50 (2") … DN 150 (6")

MID: 2014/32/EU
OIML R 137-1&2:2012
EN 12405: 2010 (for integrated flow conversion)

IECEx
Ex ia [ia] IIC T4 Gb, Ex op is IIC T4 Gb
 
ATEX
II 2G Ex ia [ia] IIC T4 Gb, II 2G Ex op is IIC T4 Gb
 
NEC/CEC (US/CA)
CSA: I.S. for Class 1 Division 1 Groups C and D T4; Ex/AEx ia IIB T4 Ga

Configurations:
LF pulses + malfunction, electrically isolated (fmax = 100 Hz)
 
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)

R-S485 (external powered, in combination with LF- or HF pulses)