DF 252 Stack Flow Monitor / Transmitter

Description

Flow rate measurement using the dynamic pressure measurement principle

Features:

Continuous measurement of flow velocity of flue gas and air streamings

Benefits:

Compact system of probe and control device, therefore easy installation
On-site diagnosis of the facility’s state due to a graphical display with high resolution showing on-line diagram
Display of flow in norm state (i.n.) or operating state (i.o.) possible
Display options in mbar, m/s, m³/h i.o. or m³/h i.n. as well as °C
Display of absolute pressure in mbar optionally possible
Simple installation with DN80PN6 flange for welding
Low maintenance, handball valves for probe back-purging

Applications:

For the operation of a facility with streaming gases (e.g. flue gas, air, etc.) the continuous registration of the exhaust gas
velocity respectively the flow as well as the temperature are often of substantial importance.

Continuous measurement of flue gas flow velocity (m/sec) using dynamic pressure measurement principle with averaging Pitot tubes

Unit in weatherproof glass fiber housing
Stainless steel probe tube 300 to 1000 mm with differential pressure transmitter and control unit in head of probe
Flow rate calculation (m3/sec) after entering the stack surface
With flue gas temperature and absolute pressure measurements
With optional heater for low ambient temperature and optional blow-back for dusty flue gas

Measuring ranges:

Velocity

Flow i.o.:

Flow i.n.:

(1 Tm³/h = 1.000 m³/h, 1.000 Tm³/h = 1.000.000 m³/h)

Temperature:

Differential pressure:

Abs. pressure (optional)

3 … 30 m/s

0 …1.000 Tm³/h

0 … 300/600 °C

0 … 10 hPa (mbar)

800 … 1.200 hPa (mbar)

Enclosure	Compact device, control unit is integrated with the probe head (no extra control panel necessary, anti-freeze heater (option)
Protection class	IP 65 (fiber glass enclosure)
Dimensions (H x W x D)	17” x 25” x 41” (440 x 640 x 1040 mm) (incl. probe 20” (500 mm))
Weight	approx. 55 lbs. (25 kg)
Probe	Dynamic pressure probe with integrated Pt100 temperature sensor 20” up to 6.5 foot length (500 mm up to 2.000 mm) – stainless steel
Flange	DN80PN6
Control unit	Dot-Matrix-display with graphic diagram, 4 keys for parameterisation and operation
Media temperature	max. 536°F (280 °C) (higher temperatures on request) min. +5 °K above dewpoint
Ambient temperature	-4 …122°F (–20 … +50 °C) (heater required for temperature below freezing)
Flow velocity	from approx. 3 … 30 m/s
Analogue signals	3 x 4 … 20 mA (can be chosen between: velocity, flow rate, differential pressure, temperature or absolute pressure)
Digital signals	failure, limit value 1 and 2, potential free relay contacts
Power supply	110 … 230 VAC / 50 … 60 Hz, 15 W, 500 W with anti-freeze heater

(832) 230-0155

DF 252 Stack Flow Monitor / Transmitter

Gas flow velocity and flow rate measurement

DF 252 Stack Flow Monitor / Transmitter

Gas flow velocity and flow rate measurement

Description

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