Series 9100MP Inline Remote Flow Averaging Tube (FAT)


Below shows the standard configuration for the our explosion proof agency approved flow element transmitter and ordinary area location remote enclosure.

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Below shows the ACEX or DCEX option which replaces the ordinary location remote enclosure and provides explosion proof agency approved remote enclosure and comes with the remote mounting bracket as shown.

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Below is an example of our FAT installations for those “Hard to get” up stream distances and unknown profiles where you still need cross sectional coverage.

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Master-Touch™ Series 9100MP Flow Meters

MP Series flowmeters are approved for use in hazardous locations (see specifications)

Inline style thermal mass flowmeters include a flow section that is usually specified to match the user’s flow conduit and is then plumbed directly into the process line. This design has the sensing elements mounted directly on the flow section for exposure to the process gas. Our inline style flow averaging thermal mass flowmeters are available in sizes from 2″ pipe through 4″ pipe and are provided with flanged end configurations, as required. Pipe sizes in excess of 4″ typically require insertion style thermal mass flow meters.

Remote style thermal mass flowmeters utilize two enclosures. One enclosure is mounted at the point of measurement on the flow section or on the probe assembly. This enclosure may be rated for either hazardous environments or for ordinary, non-hazardous environments, as necessary. The second (remote) enclosure is usually placed in a readily accessible location rated for non-hazardous conditions. (Contact the factory for information concerning remote explosion-proof enclosure). The remote enclosure includes the all of the electrical connections as well as the linearizing electronics and the display/keypad assembly.

Our patented Flow Averaging Tubes™ (FAT™) use the principle of convective heat transfer to directly measure mass flow, and are well suited to most applications with limited available straight run. In many installations, the up-stream straight run can be reduced to three diameters. The probe has a number of large diameter inlet ports along the length of the upstream impact surface. The pressure at each inlet port is averaged inside the tube to create the axial flow through the tube and across our flow sensor. The gas returns to the main flow stream through the ports located near the sensing elements. Anomalies in the actual flow profile or installations in non-circular ducts may still some require minor adjustment to achieve the best accuracy.

CSA/CUS, ATEX, IECEx, KOSHA (Flow Element Transmitter)
Remote enclosure – Ordinary (Non-Hazardous) area locations

Linear signal output
0–5 VDC & 4–20 mA (Flow and Temperature)

Signal Interface
RS232 & RS485 Modbus RTU embedded
Optional HART or Profibus DP

LCD (flow rate, flow total, gas temperature)

Accuracy, including linearity (Ref.: 21°C)
±(1% of Reading + 0.5% of Full Scale + GTC)

±0.2% of Full Scale

Sensor response time
1 second to 63% of final value

Turn down ratio
100:1 @ 15 SFPM (.076 NMPS) Minimum Reading

Electronics PCB temperature range
-40° to 158°F (-40° to +70°C)

Environmental temperature range
-40° to 140°F (-40° to +60°C)

Gas temperature range
40°–150°F (5°–65°C)

Gas temperature coefficient (GTC)
0.05% Full Scale/°C @ 40°–100°F (5°–40°C)
0.10% Full Scale/°C @ 100°–150°F (40°–65°C)

Pressure rating maximum
500 PSI

Input power requirement
24VDC @ 250mA
115 VAC 50/60 Hz optional
230 VAC 50/60 Hz optional

Flow Transmitter power requirements
5 watts maximum

RAM Back-up
Lithium Battery

Wetted materials
316 Stainless Steel (Hastelloy optional)

Standard temperature & pressure (STP)
70°F & 29.92″ Hg (Air .075 lb./cubic foot)

NIST traceable calibration

NOTE: Specifications subject to change without notice. 

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