Operation and Performance |
Fluid Types |
Flare and vent gases |
Pipe Sizes |
2 in to 120 in NB (50 mm to 3,000 mm)
and larger |
Pipe Materials |
All metals. Consult RS Hydro for other
materials. |
Flow Accuracy (velocity) |
- 1 path measurement: ±2% to 5% of
reading at ±1 to 275 ft/s (±0.3 to 85
m/s)
- 2-path measurement: ±1.4% to 3.5%
of reading at ±1 to 275 ft/s (±0.3 to
85 m/s) |
Molecular Weight Accuracy (hydrocarbon mixtures) |
MW 2 to 120 gr/gr mole/±1.8%, optimizable
for other gas compositions |
Mass Flow Accuracy (hydrocarbon mixtures) |
- 1-path: 3% to 7%
- 2-path: 2.4% to 5%
Dependent on accuracy of temperature
and pressure inputs.
Accuracy depends on pipe size and
whether measurement is one-path or
two-path. Accuracy to ±0.5% of reading
may be achievable with process
calibration. |
Repeatability |
±1% at 5 to 100 ft/s (15cm/s to 30 m/s) |
Range (bidirectional) |
-275 to 275 ft/s (-84 to 84 m/s) |
Rangeability (overall) |
2750:1 |
Measurement Parameters |
Mass flow, standard and actual volumetric
flow, totalised flow, and flow
velocity |
Electronics |
Flow Measurement |
Patented Correlation Transit-Time mode |
Enclosures |
• Standard: Epoxy-coated aluminum
weatherproof Type 4X/IP66 Class
I, Division 2, Groups A, B, C & DFM
and CSA
• Optional: Stainless steel, fibreglass, explosion-proof, flameproof |
Dimensions |
• Weight 11 lb (5 kg)
• Size (h x w x d) 14.24 in x 11.4 in x 5.12
in (362 mm x 290 mm x 130 mm) |
Channels |
• Standard: One channel
• Optional: Two channels (for two
pipes or two-path averaging) |
Display |
Two independent software configurable
64 x 128 pixel backlit LCD graphic
displays |
Keypad |
39-key tactile-feedback membrane |
Power Supplies |
• Standard: 100 to 130 VAC, 50/60 Hz
or 200 to 265 VAC, 50/60 Hz
• Optional: 12 to 28 VDC, ±5% |
Power Consumption |
20W maximum |
Operating Temperature |
-4°F to 131°F (-20°C to 55°C) |
Storage Temperature |
-67°F to 167°F (-55°C to 75°C) |
Standard Inputs |
Two isolated 0/4 to 20 mA inputs (121
Ω) with integral 24 VDC power supply |
For required temperature and pressure inputs |
Standard Outputs |
• Six 4 to 20 mA outputs, software
assignable two outputs for 550 Ω
maximum load
• Four outputs for 1000 Ω maximum
load. |
Optional inputs / outputs |
There are four additional slots available
for any combination of the following
I/O boards: |
• Analog outputs: |
Select up to three additional output
boards, each with four isolated 0/4 to
20 mA outputs, 1 k Ω maximum load |
• Analog inputs: |
Select up to three boards of one of the
following types:
- Analog input board with two
isolated 4 to 20 mA inputs and 24V
loop power
- RTD input board with two isolated,
three-wire, RTD inputs; span -148°F
to 662°F (-100°C to 350°C); 100 Ω Pt |
• Totaliser/frequency outputs: |
Select up to three totaliser/frequency
output boards, each with four outputs
per board, 10-kHz maximum. All
boards allow software selectable
functioning in two modes:
- Totaliser mode: Pulse per defined unit
of parameter (e.g., 1 pulse/ft3)
- Frequency mode: Pulse frequency
proportional to magnitude of parameter
(e.g., 10 Hz = 1 ft3/h) |
• Alarm relays: |
Select up to two boards of one of the
following types:
- General purpose: Relay board with
three Form C relays; 120 VAC, 28 VDC
maximum, 5A maximum; DC 30W
maximum, AC 60 VA
- Hermetically sealed: Relay board
with three hermetically sealed Form
C relays; 120 VAC, 28 VDC maximum,
2A maximum; DC 56W maximum,
AC 60 VA |
Digital Interfaces |
• Standard: RS232
• Optional: RS485 (multiuser)
• Optional: HART® protocol
• Optional: Modbus® protocol
• Optional: Ethernet TCP/IP |
Site parameter
Programming |
Menu-driven operator interface using
keypad and “soft” function keys |
Data logging |
Memory capacity (linear and/or circular
type) to log more than 43,000 flow
data points |
Display functions |
• Graphic display shows flow in
numerical or graphic format
• Displays logged data and
diagnostics |
European compliance |
Complies with EMC Directive 89/336/
EEC, 73/23/EEC LVD (Installation Category
II, Pollution Degree 2) and PED
97/23/EC for DN <25 |