F&J - Model DF-22E-2G -Digital Flow Meter Low Volume Air Sampler (100 - 120 VAC)
The DF-22E-2G environmental air sampling system with digital flowmeter is a low-volume air sampler consisting of an oilless, carbon vane vacuum pump, with a constant air flow regulator for use where a nearly constant air flow is desirable. The regulator holds a constant pressure drop across an in-line orifice, by varying the flow through a bypass valve into the pump. This system allows the pump to work at a minimum pressure drop at all times, permitting it to run cooler, thus extending its service life. The oilless pump requires no lubrication to maintain optimal efficiency during its service life. The pump is mounted on a removable base plate, which can be secured within the powder coat painted aluminum environmental weatherhouse, Model WH-3 having an enclosure rating of IPX3. The digital flowmeter has a large bright OLED display.
The DF-22E-2G environmental air sampling system is designed for continuous outdoor use. Please consult the product specifications for the design tem-perature range and the installation category. Standard product displays flow rate, elapsed time and totalized volume by operator selection.
The typical operating range is 0.5 to 4 CFM (14 – 115 LPM).
- Bright LED Display
- Flowrate and volume totalizations displayed are corrected to a factory settable reference Temperature and Pressure (4 options available)
- Classical STP : 0ºC, 1 Atm
- Normal T and P : 20ºC, 1 Atm
- Modified Normal T and P : 21.1ºC (70ºF), 1 Atm or
- Standard Ambient T and P : 25ºC, 1 Atm
- Reference or ambient flow conditions are operator selectable
- Elapsed time meter
- RS232 Data export in ASCII format in comma delimeted text string at various operator selectable download frequencies
- Storage of elapsed time and volume in the event of power outage
- Detection of zero flow condition after return of power to pause elapsed time until flow returns
- Auto shut-off on time or volume
- Selectable engineering units for flow and volume (to be set at factory)
- FLOW : VOLUME
- sccm : scc
- SLPM : SL
- SCMH : SCM
- SCFM : SCF
- Bluetooth Dongle for PC Device (P/N: BTDG)