Cubemass DCI
Endress+Hauser 15
Operating conditions: Process
Medium temperature range Sensor
• –50 to +200 °C (–58 to +392 °F)
Seals
• Only for mounting kits with threaded connections:
– Viton: –15 to 200 °C (–5 to +392 °F)
– EPDM: –40 to +160 °C (–40 to +320 °F)
– Silicone: –60 to +200 °C (–76 to +392 °F)
– Kalrez: –20 to +275 °C (–4 to +527 °F)
Fluid pressure range
(nominal pressure)
Pressure range of secondary containment
• 25 bar (363 psi)
Rupture element/disk
(optional)
Further information → ä 25
Limiting flow → ä 5, "Measuring range"
Pressure loss (SI units) Pressure loss depends on the fluid properties and on the flow rate.
The following formulas can be used to approximately calculate the pressure loss:
DN Max. nominal pressure
[mm] [inch] [bar] [psi]
1 1/24" 400 5800
2 1/12"
160 232041/8"
6¼"
Reynolds number
A0003381
Re ≥ 2300
1)
A0003380
Re < 2300
A0003379
Δp = pressure loss [mbar]
ν = kinematic viscosity [m
2
/s]
g = mass flow [kg/s]
ρ = density [kg/m
3
]
d = inside diameter of measuring tubes [m]
K, K1 = constants (depending on nominal diameter)
1)
To compute the pressure loss for gases, always use the formula for Re ≥ 2300.
Re =
pnr·d· ·
4·
g
Dn rp=K· · ·
0.25 1.75 –0.75
g
Dnp=K1· ·g
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