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Mass and Volumetric Flow Meters
FMA-1600A
PLACE ORDER - Ranges of 0 to 0.5 SCCM Up to 0 to 3000 SLM
- <10ms Response Time—Field Adjustable
- 130+ Gas Calibrations with Every Unit: Air, Ar, CH4, CO, CO2, Ethane, H2, He, N2, N2O, Neon, O2, Propane, Butane, Acetylene, Ethylene and more
- Pressure, Temperature, and Volumetic and Mass Flow Simultaneously Displayed
- No warm-up time required
- NIST 5 Point Certificate Included
- No Straight Runs of Pipe Required
- Analog and RS232 communications included
- 200:1 turndown ratio.
- Portable Battery Powered units (-B models)
Description
Description
The FMA-1600A Series mass and volumetricflowmeters use the principle of differential pressure within a laminar flow field to deterime themass flow rate. A laminar flowelement (LFD) insdie themeter forces the gas into laminar (streamlined) flow. Inside this region, the Poiseuille equationdictates that the volumetric flowrate be linearly related to the pressure drop along a fixeddistance of the LFE. This, alongwith the viscosity of the gas, isused to accurately determine the volumetri flow rate. Separateabsolute temperature and pressure sensors are incorporated and correct the volumetric flow rateto a set of standard conditions. This standardized flow rate is commonly called the mass flow rate and isreported in units such as standard cubic feet per minute (SCFM) orstandard liters per minute (SLM).
Standard units include a 0 to 5 Voutput (4 to 20 mA optional) and RS232 communications. The gasselect feature can be adjusted fromthe front of the keypad or via RS232communications. Volumetric flow,mass flow, or absolute pressure, andtemperature can be viewed or recordedthrough the RS232 connection. It is alsopossible to multi-drop up to 26 unitson the same serial connection to a distance of 125'. These flowmetersare also available in a portable version for use in the field (-B models).
SPECIFICATIONS
Accuracy: ±(0.8% of rdg + 0.2% FS)
Repeatability: ±0.2%
Turndown Ratio: 200:1
Response Time: 10 ms typical default response time for 63.2% of a step change. A variable register allows response time to be field adjustable to a certain extent via RS232 communications. The primary trade-off for response time is signal noise
Output: 0 to 5 Vdc standard
Operating Temperature: -10 to 50°C (14 to 122°F)
Zero Shift: 0.02% FS/°C/atm
Span Shift: 0.02% FS/°C/atm
Humidity Range: 0 to 100% non-condensing
Pressure (Max):
FMA-1600A Series: 145 psig
FMA-1600A Series: 50 psi differential
FVL-1600A Series: 10 psig
FVL-1600A Series: 10 psi differential
Measurable Flow Rate: 125% FS
Supply Voltage: 7 to 30 Vdc (15 to 30 Vdc for 4 to 20 mA output)
Supply Current: 35 mA typical current draw; 100 mA available supply recommended
Cable Connection: 8-pin mini DIN
Wetted Parts: 303 & 302 Stainless Steel, FKM Heat Cured Silicone Rubber, Glass ReinforcedPolyphenylene Sulfide, Heat Cured Epoxy, Aluminum, Gold, Silicon, Glass. Contact trodeks engineering for details.
Standard Pressure Drops (venting to atmosphere):
| Max Flow Rate | 0.5 to 50 SCCM | 0.1 to 10 SLM | 20 SLM | 50 SLM | 100 SLM | 250 SLM | 500 SLM | 1000 SLM | 1500 SLM |
| PSID | 1 | 1 | 1 | 2 | 2.5 | 4.0 | 5.5 | 6.0 | 9.0 |
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