fmi21
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Technical DatasheetTD 00046E/24/EN/01.13
•No calibration needed (preconfigured from factory 0 to 100 % to ordered probe length)
• Corrosion resistant materials (carbon fiber, stainless steel)
• Simply shorten the probe rods on site
• Safe operation - regardless of tank geometry
Complete product information:www.e-direct.us/fmi21
Specs at a glance:
•Product: Conductive liquids as of 30 μS/cm
•Probe length: 150 to 2500 mm (6 to 98”)
•Process pressure: –14.5 to 145 psi (–1 to +10 bar)
•Approval: ATEX II 3G EEx nA IIC T6
•Product temperature: –40 to +212 °F (–40 to +100 °C)
•Viscosity: Max. 2000 cSt
Two-rod capacitive probe for continuous level measurement in liquids
LiquicapTFMI21
$ 684.00
The measuring system consists of:• The Liquicap T FMI21
capacitance probe (the probe rods should never be in contact with the tank) with
• Electronic insert FEI20• Display and housing cover
(optional)• A transmitter power supply unit
RN221N, RMA42, RTA421, RIA45/RIA46 or RIA452
0 %
100 % factorycalibration
Transmitter power supply
EX EXATEX II 3G
LiquicapTFMI21 2
Overview Technical data Dimensions
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Application / Function
Application The Liquicap T FMI21 sensor is used in conductive liquids for continuous level measurement. The Liquicap T FMI21 is particularly suited to small measuring tanks and works independently of the tank’s shape or material (plastic, stainless steel, concrete…).It is resistant to aggressive liquids like acids or alkalis.
ApplicationexampleFunction The probe and medium form an electric capacitor. If the probe is in air, a certain low initial capacitance is measured. When the tank is filled, the capacitance increases the more the probe is covered. The electronic insert of the probe converts the capacitance measured to a 4 to 20 mA signal in proportion to the level.
Ground rod (uninsulated)
Installation according to instruction manual.
Probe rod insulated
Ø 0.16
Ø 3.35
max. 2.99
Ø 0.20
5.71Probe length L 5.90" to 98"
0.871.46
G 1½SW/AF55
LiquicapTFMI21 3
Application / FunctionOverview
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DimensionsTechnical data
Dimensions(ininches)andmaterials
InputMaximum viscosity 2000 cStMeasuring range 0 pF to 2000 pFProbe length 150 to 2500 mm (5.9 to 98.43”)Permitted span ∆C = 10 pF to 2000 pFMeasuring frequency 250 kHzInput signal Probes covered => high capacitance
Probes exposed => low capacitance
Output (electronic insert FEI20 / 4 to 20mA)Output signal 3.8 to 20.5 mASwitch-on current max. 20 mA (< 500 ms)Signal on alarm > 21 mA
Power supplyConnection voltage U = 10 to 30 V DC, reverse polarityPower consumption P < 0.7 WCurrent consumption I < 22 mACable entries M20 × 1.5 (screw connection)
Performance characteristics (with installed electronic insert)Reference operating conditions
Ambient temperature 74 °F (23 °C ), atmospheric pressure, probe installation vertical from above
Max. measured error ≤ 1 % of full scale value (0 to 2000 pF)Repeatability 0.25 % of full scale value (0 to 100 pF)Start-up settling time < 2 sInfluence of ambient temperature
< 0.01 %/K (–40 to +158 °F/–40 to +70 °C) probe length 1 m
Integration time 1 sCalibration In an installed state, recalibration is only
necessary if: – the 0 % and 100 % value should be adjusted to suit customer specifications
– after the probe rods have been shortened
Operating conditionsAmbient temperature –40 to +158°F (–40 to +70 °C)Storage temperature -40 to +176°F (-40 to +80 °C)Climate class Tropicalized as per DIN IEC 68 Part 2-38Degree of protection IP 66Shock resistance DIN EN 60068-2-27/IEC 68-2-27: 30gVibration resistance DIN EN 60068-2-64/IEC 68-2-64:
20 to 2000 Hz, 1 (m/s²)² /Hz (with min. rod length 150 mm)
EMC Interference emission to EN 61326, electrical equipment class B; Interference immunity to EN 61326, annex A (industrial)
Conductivity of medium
≥ 30 µS/cm
Process pressure –14.5 to 145 psi (–1 to +10 bar)Process temperature –40 to +212 °F (–40 to +100 °C)Lateral loading capacity
2 Nm
Materials in contact with mediumProbe rods Rod: 1.4404/316L; Optional: carbon fiber CFC;
Sealing ring: EPDM;Insulation: PP;Spacer: PP
Process connections G 1½ A (PPS, DIN ISO 228/l)Seals Sealing ring for process connection
G 1½ A: Elastomer fiber asbestos-free (resistant to oils, solvents, steam, weak acids and alkalis)
DisplayGreen LED operational status (slow flashing),
calibration status (fast flashing)Red LED for key enter validation (short flashing),
alarm or warning (flashing);display for measured value in % (optional)
ApprovalsWHG approval Overspill protection to §19 WHG (Germany)Ex approval ATEX II 3G EEx nA IIC T6
Technicaldata
LiquicapTFMI21 4
Application / FunctionOverview Technical data Dimensions
ContactGo to shopElectrical connection Price table
Pricetable
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Liquicap T FMI21 Order no. Price/pcs. in €Zone Probe rod Display Length (inch) 1 to 3 4 to 10 11 to 35CSA General Purpose, CSA C/US
316L, L = 6” to 40” With * FMI21-D2E2C2 778.00 723.00 684.00316L, L = 40” to 100” With * FMI21-D2F2C2 838.00 779.00 737.00
* Please specify sensor length.
Prices valid until 09.30.2013 in U.S. dollars per unit (not including shipping and applicable sales tax).See Endress+Hauser, Inc. Terms and Conditions of Sale for shipping, tax, and payment terms.
Complete product information:www.e-direct.us/fmi21
RN221NRNS221RMA42RTA421RIA45/46RIA452
FEI204... 20 mA
1 2
10 %0... 100 %
Measurement display (optional)
Endress+Hausertransmitter power supply
Electricalconnection
Application / FunctionOverview Technical data Dimensions
Electrical connection Price table ContactGo to shop
Contact
E-directEndress+Hauser, Inc.2350 Endress PlaceGreenwood, IN 46143
Direct order
Internet www.e-direct.usby phone 888- EH-DIRECT
(343-4732)per Fax 317-535-8498E-Mail [email protected]