FS10i Natural Gas Flow Meter

• Direct Mass Flow Measurement
• Ultra Reliable, No Moving Parts Design
• User-Programmable 4-20 mA Output and Relay Trip Point
• Easy Set-Up Via Serial I/O to PC Interface
• 10 LED Display Array
• Easy M12 or Cable Gland Connection With Electronics
• SIL 2 Compliance Rating
• Optional Div 2 / Zone 2+Zone 22 Approvals

• Sub-metering
• Furnace fuel lines
• Gas-fired ovens and heaters
• Gas engine fuel feed
• Kilns and calciners
• Boilers

Instrument

• Measuring Principal: Thermal dispersion
• Fluid Type: Natural gas
• Range

In-line
   1 ″:    1 SCFM to 50 SCFM [1,6 NCMH to 80 NCMH]

   2 ″:    2 SCFM to 200 SCFM [3,2 NCMH to 320 NCMH]
Insertion
   Ordering Block 3, Code 3:    1.25 SFPS to 125 SFPS [0,4 NMPS to 38 NMPS]
   Ordering Block 3, Code 4:    4 SFPS to 400 SFPS [1,2 NMPS to 122 NMPS]

• Accuracy:    ± 1.5 % rdg, ± 0.5 % FS
• Temperature Compensation:   30 °F to 180 °F [-1 °C to 82 °C]
• Pressure Service: 10 to 50 psi(a) [0,7 to 3,5 bar(a)]
• Process Connections

         In-line:         1 ″ or 2 ″ pipe tee, FNPT threads
         Insertion:    1/2 ″ MNPT compression fitting with either Teflon or metal ferrule

• Repeatability: ± 0.5 % of reading
• Response Time: 4 sec. (1 time constant)
• Temperature Coefficient For temperatures > ± 30 °F [± 16 °C] 

Maximum ± 0.025 % of reading / °F up to 250 °F [± 0,05 % of reading / °C up to 121 °C]

Flow Element 

• Materials of Construction (Wetted Parts)

In-line:    316 stainless steel pipe tee; 316L stainless steel flow element with Hastelloy C-22 thermowells
Insertion:    316L stainless steel with Hastelloy-C22 thermowells

• Operating Temperature:   -40 °F to 250 °F [-40 °C to 121 °C]

                                                  Teflon ferrule maximum temperature is 200 °F [93 °C]

• Operating Pressure

     In-line:          225 psi [15.5 bar]
     Insertion:      500 psi [34 bar]
Teflon ferrule maximum pressure is 150 psig [10 bar(g)]

• Insertion “U” lengths

   6 ″ [152 mm] with variable insertion depth, 1/2 ″ MNPT compression fitting                                           with Teflon or metal ferrule
   12 ″ [305 mm] with variable insertion depth, 1/2 ″ MNPT compression fitting                                           with Teflon or metal ferrule

Electronics

• Display

10 segment LED array, sequential lighting related to flow rate and flashing when trip point exceeded

• Output Signals

Analog:    4-20 mA *
Relay:    SPDT, 1A @ 24 Vdc, 120 Vac  (ATEX: DC only)
Serial:    RS232C I/O
*    500 ohm maximum load; user scalable, general purpose, uncalibrated output proportional to flow rate for trend monitoring or assignable to temperature; fault indication per NAMUR NE43 guidelines, user-selectable for high (> 21.0 mA) or low (< 3.6 mA) default

• Instrument Set-up:

Free FCI set-up and configuration software utility program and 3-wire-to-DB9 RS232 dongle are supplied for interface of the FS10i to user’s PC. This interface is required to set the 4-20 mA output for the specific line size, flow range, and engineering units, as well as alarm trip point, hysteresis, and trip time delay.

• Trip Point Hysteresis Control: 0-100% of span
• Trip Point Time Delay: user settable for 0-65,000 seconds
• Input Power: 24 Vdc (21.5 Vdc to 30 Vdc); 2.5 watts maximum
• Operating Temperature: -40 °C to 160 °F [-40 °C to 71 °C]

Enclosure / Housing

• Material: stainless steel body; aluminum end-cap/top with polyester overlay and clear, silicone sheath impact guard
• Protection Ratings

Non-Ex installations:    IP65, IP66, IP67
FM, FMc approved:    NEMA 4X
ATEX, IECEx approved:    IP64 

• Agency Approvals

FM , FMc             Nonincendive, Class I Division 2 Groups A, B, C, D;
                            Class II, Division 2 Groups E, F, G; Class III,
T4@Ta=71°C, Type 4X
ATEX , IECEx      Nonincendive for gas and dust, Zone 2/Zone 22
                            II 3 G Ex ec IIC T4 Gc, -40°C ≤ Ta ≤ +71°C
                            II 3 D Ex tc IIIC T81 °C Dc, -40°C ≤ Ta ≤ +71°C
                            IP64
Others:               EAC/TR CU
Ingress Protection:     IP65, IP66, IP67 in non-hazardous locations
CE Marking, CRN, complies with Canadian Electrical code requirements of ANSI / ISA 12.27.01-2011 as a single seal device

• IEC 61508 (SIL):    SIL 2 Compliant with Hardware Fault Tolerance (HFT) of 0; Safe Failure Fraction (SFF) 90%
• Warranty: 1 Year

• FM , FMc               Nonincendive, Class I Division 2 Groups A, B, C, D;

                                  Class II, Division 2 Groups E, F, G; Class III,
                                  T4@Ta=71°C, Type 4X

• ATEX , IECEx        Nonincendive for gas and dust, Zone 2

                                   II 3 G Ex ec IIC T4 Gc, -40°C ≤ Ta ≤ +71°C
                                   II 3 D Ex tc IIIC T81 °C Dc, -40°C ≤ Ta ≤ +71°C, IP64

• EAC/TR CU
• Ingress Protection     IP65, IP66, IP67 in non-hazardous locations
• CE Marking, CRN, complies with Canadian Electrical code requirements of ANSI / ISA 12.27.01-2011 as a single seal device
• IEC 61508 (SIL)    SIL 2 Compliant; Safe Failure Fraction (SFF) 90%