Technical specification

FLUXUS® F502BT

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Non-invasive ultrasonic thermal energy and volume flowmeter

Stationary ultrasonic clamp-on system for heat quantity and flow measurement of water

Features

• Single channel thermal energy and volume flow mea-surement device with two temperature inputs (Pt100 clamp-on or insertion temperature probes available)

• Complete integrated thermal energy/BTU metering system

• Very high temperature accuracy, temperature probes are matched to 0.1 °C in temperature difference

• Available with a 4...20mA current output and offering full Modbus RTU or BACnet MS/TP functionality

• Very high turndown ratio > 1000 : 1

• Measures very low flow velocities down to 0.01 m/s - very important for measuring off peak flow rates (e.g. during night)

• Permanent coupling pads - no grease, no maintenance required

Low Flow Sensitivity

• Thermal energy supply systems are designed to deliver adequate cooling or heating during peak climate condi-tions. As a result, most applications run at low and sometimes very low flow velocities.

• One of the biggest problems with accurate thermal en-ergy (BTU) metering is that most meters cannot detect such flow velocities and, consequently, often fail to monitor low energy flows. The FLUXUS F502BTU me-ter is specially designed to accurately meter flow veloc-ities in this low range.

Temperature Accuracy

• In applications with small temperature differentials such as chilled water applications, the temperature measurement accuracy is critically important.

• FLEXIM’s temperature measurement system provides a differential measurement uncertainty of better than 0.1 °C.

FLUXUS F502BTU

Applications

• HVAC

• District energy

• Chilled and hot water plants in

- College campuses

- Corporate complexes

- Government complexes

- Commercial buildings

- Malls

- Hospitals

- Sports arenas

- etc.

• Industrial cooling and heating

• Geothermal installations

• Industrial processes

FLUXUS BTU 500

FLUXUS® F502BT Technical specification

Flow transmitter

Technical data

FLUXUS F502BT-NNF502BT-F2

design field device with 1 measuring channelapplication BTU/energy metermeasurementmeasurement principle transit time difference correlation principleflow velocity 0.01...25 m/srepeatability 0.25 % of reading ±0.01 m/sfluid water and thermal fluids (glycol, BP Transcal LT, BP Transcal N, R22 Freon, R134 Freon, ammonia, Shell

Termina B, glycol/H2O 20 %, glycol/H2O 30 %, glycol/H2O 40 %, glycol/H2O 50 %, Mobiltherm 594, Mobil-therm 603, R407C, R410A)

accuracy1

- measuring system ±2 % of reading ±0.01 m/sflow transmitterpower supply 100...230 V/50...60 Hz or

20...32 V DC or11...16 V DC

power consumption < 10 W

number of flow measuring channels

1

damping 0...100 s, adjustablemeasuring cycle (1 channel) 10 Hzresponse time 1 shousing material aluminum, powder coateddegree of protection accord-ing to IEC/EN 60529

IP66

dimensions see dimensional drawingweight 1.9 kgfixation wall mounting, optional: 2 " pipe mountingambient temperature -10...+60 °C display 2 x 16 characters, dot matrix, backlightmenu language English, German, French, Dutch, Spanishexplosion protection (optional)

FM

transmitter F502BT-F2marking Cl. I, II, III/Div. 2/

GP. A, B, C, D, E, F, G/

Cl. I/Div. 2/ GP. A, B, C, D/

T4 Ta = 60 °Cmeasuring functionsphysical quantities volumetric flow rate, mass flow rate, flow velocity, heat flowtotalizer volume, mass, heat quantitydata logger (optional)loggable values all physical quantities and totalized valuescapacity > 100 000 measured valuescommunicationinterface optional: RS485 (sender) or Modbus RTU or BACnet MS/TP or M-Bus (nonEx)outputs

The outputs are galvanically isolated from the transmitter.current output

number 1, optional: 2range 0/4...20 mAaccuracy 0.1 % of reading ±15 μAactive output Rext < 500 Ω

binary outputnumber 1, optional: 2optorelay 28 V/100 mAbinary output as alarm output- functions limit, change of flow direction or errorbinary output as pulse output mainly for totalizing- pulse value 0.01...1000 units- pulse width 80...1000 ms

1 for reference conditions and v > 0.25 m/s

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Technical specification FLUXUS® F502BT

Dimensions

2 " pipe mounting kit (optional)

inputsThe inputs are galvanically isolated from the transmitter.temperature input

number 2type Pt100connection 4-wirerange -150...+560 °Cresolution 0.01 Kaccuracy ±0.01 % of reading ±0.03 K

FLUXUS F502

in mm

FLUXUS F502BT-NNF502BT-F2

thread: 4x M20 x 1.5cable gland: max. 4x M20

103

140

71

Ø 4.5

Ø 8.4

10

205

220

fixing holes for wall mounting

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FLUXUS® F502BT Technical specification

Terminal assignment

FLUXUS F502BT

power supplyterminal connection (AC) connection (DC)PE earth earthN(-) neutral -L(+) phase +

transducersextension cable, transducer cablemeasuring channel A

terminal connection

AV transducer , signal

AVS transducer , internal shield

ARS transducer , internal shield

AR transducer , signal

cable gland external shield

outputsterminal connection1(-), 2(+) binary output3(-), 4(+) binary output5(-), 6(+) current output I17(-), 8(+) current output I29 (-), 10 (+), 11 (shield) communication interface

inputstemperature probe

terminal direct connection connection with extension cable

TF1, TX1 red redTF2, TX2 red/blue greyTF3, TX3 white/blue blueTF4, TX4 white white

AV AVS

AGN

ARS

AR

Technical specification FLUXUS® F502BT

Transducers

Transducer selection

Technical data

transducer frequency

M 50 100 400

P 25 50 200

Q 10 25 150

5 10 50 100 500 1000 5000inner pipe diameter [mm]

recommended possible

technical type CDM2LZ7 CDP2LZ7 CDQ2LZ7transducer frequency MHz 1 2 4

inner pipe diameter dmin. extended mm 50 25 10min. recommended mm 100 50 25max. mm 400 200 150pipe wall thicknessmin. mm 2 1 0.6materialhousing PEEK with stainless steel

cap 316Ti (1.4571)PEEK with stainless steel cap 316Ti (1.4571)

PEEK with stainless steel cap 316Ti (1.4571)

contact surface PEEK PEEK PEEKdegree of protection according to IEC/EN 60529

IP67 IP67 IP67

transducer cabletype 2606 2606 2606length m 15 15 15dimensionslength l mm 59 59 36width b mm 28 28 18height h mm 31 31 21dimensional drawing

ambient temperaturemin. °C -40 -40 -40max. °C +100 +100 +100remark

hb

l

hb

l

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FLUXUS® F502BT Technical specification

technical type CLM2N53 CLP2N53 CLQ2N53transducer frequency MHz 1 2 4inner pipe diameter dmin. extended mm 50 25 10min. recommended mm 100 50 25max. recommended mm 2000 200 150max. extended mm 3400 600 400materialhousing PEEK with stainless steel

cap 316L (1.4404)PEEK with stainless steel cap 316L (1.4404)

PEEK with stainless steel cap 316L (1.4404)

contact surface PEEK PEEK PEEKdegree of protection according to IEC/EN 60529

IP67 IP67 IP67

transducer cabletype 1699 1699 1699length m 9 9 9dimensionslength l mm 64 64 40width b mm 32 32 22height h mm 40.5 40.5 25.5dimensional drawing

weight (without cable) kg 0.066 kg 0.066 kg 0.016 kgambient temperaturemin. °C -40 -40 -40max. °C +130 +130 +130temperature compen-sation

x x x

explosion protection

FM

explosion protection temperaturemin. °C -55 -55 -55max. °C +190 +190 +190marking NI/Cl. I,II,III/Div. 2 /

GP A,B,C,D,E,F,G/Temp. Codes dwg 3860

NI/Cl. I,II,III/Div. 2 /GP A,B,C,D,E,F,G/

Temp. Codes dwg 3860

NI/Cl. I,II,III/Div. 2 /GP A,B,C,D,E,F,G/

Temp. Codes dwg 3860type of protection non incendive non incendive non incendive

remark for F502BT-F2

l

hb

l

hb

hb

l

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Technical specification FLUXUS® F502BT

Transducer mounting fixture

Coupling materials for transducers

Technical data

Variofix L

material: stainless steel 316 (1.4571), 316L (1.4404), 17-7PH (1.4568)

inner length:VLM: 234 mmVLQ: 176 mm

dimensions:VLM: 309 x 57 x 63 mmVLQ: 247 x 43 x 47 mm

tension straps, clasps and transducer shoes

material: stainless steel 304 (1.4301), 303 (1.4305)

tension strap length: 10 m

type ambient temperature material°C

coupling compound type N -30...+130 mineral grease paste

coupling foil type VT -10...+200 fluoroelastomer

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FLUXUS® F502BT Technical specification

Connection systems

x - transducer cable length

l - max. length of extension cable

Transducer cable

Technical data

connection with extension cable direct connection transducerstechnical type

*****53

****LZ7

transducer cable extension cabletype 2606 1699 2552 2615standard length x 15 9 - -max. length l m - - 90ambient temperature °C -40...+100 -55...+200 -25...+80 -40...+70properties halogen free

fire propagation test according to IEC 60332-1

combustion test accord-ing toIEC 60754-2

cable jacketmaterial PUR PTFE TPV PURouter diameter mm 5 2.9 12 12thickness mm 0.3 2colour grey brown black blackshield x x x xsheathmaterial - stainless steel 316Ti

(1.4571)- -

outer diameter mm - 8 - -

tran

smitt

er

x

l

JB04

tran

smitt

er

x

tran

smitt

er

x

l

JB05

tran

smitt

er

x

Technical specification FLUXUS® F502BT

Junction box

Technical data

Dimensions

2 " pipe mounting kit (optional)

technical type JB04 JB05dimensions see dimensional drawing see dimensional drawingweight kg 1.2 kg 1.2 kgfixation wall mounting, optional: 2 " pipe mounting wall mounting, optional: 2 " pipe mountingmaterialhousing stainless steel 316L (1.4404) stainless steel 316L (1.4404)gasket silicone siliconedegree of protection according to IEC/EN 60529

IP66, NEMA 4X IP67

ambient temperaturemin. °C -40 -40max. °C +60 +80explosion protection

FM

marking NI/Cl. I,II,III/Div. 2 /GP A,B,C,D,E,F,G/

T6 Ta = -40...+60 °C

-

in mm

174

1192

wall mounting holder

70163.5

156

Ø 9

thread: 3x M20 x 1.5cable gland: max. 2x M20

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FLUXUS® F502BT Technical specification

Terminal assignment

JB04

JB05

transducers

terminal connectionXV transducer , SMB connectorXR transducer , SMB connectorcable gland external shield

extension cable

terminal strip KL2terminal connection

TV signalTVS internal shieldTRS internal shieldTR signalshield terminal external shield

shield terminal

equipotential bonding terminal(at wall mounting holder)

transducers

terminal strip KL1terminal connection

TV transducer , signalTVS transducer , internal shieldTRS transducer , internal shieldTR transducer , signalcable gland external shield

extension cable

terminal strip KL2terminal connection

TV signalTVS internal shieldTRS internal shieldTR signalshield terminal external shield

shield terminal

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Technical specification FLUXUS® F502BT

Clamp-on temperature probe (optional)

Technical data

Connection

Temperature probe

Cable

technical type PT12Ntype Pt100connection 4-wiremeasuring range °C -30...+250

accuracy T ±(0.15 °C + 2 . 10-3 . |T [°C]|)class A

accuracy ∆T(2x Pt matched accor-ding to EN 1434-1)

≤ 0.1 K (3 K < ∆T < 6 K), more corresponding to EN 1434-1

response time s 50housing aluminumdegree of protection according to IEC/EN 60529

IP66

weight kg 0.25fixation clamp-onaccessoriesthermal conductivity paste 200 °C

x

thermal conductivity foil 250 °C

x

dimensionslength l mm 15width b mm 15height h mm 20

connection with extension cable direct connection technical type

PT12N

cable of temperature probe extension cabletype 4 x 0.25 mm² black LIYCY 8 x 0.14 mm² greystandard length m 3 5/10/25max. length m - 200cable jacket PTFE PVC

extension cable

junction box

l

h

red/blue red white/blue white

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FLUXUS® F502BT Technical specification

Junction boxtechnical type JBT3dimensions see dimensional drawingfixation wall mounting

optional: 2 " pipe mountingmaterialhousing stainless steel 316L (1.4404)gasket siliconedegree of protection according to IEC/EN 60529

IP67

cable gland max. 2x M12ambient temperaturemin. °C -40max. °C +80

Terminal assignment

JBT3

temperature probe

terminal strip KL1terminal connection

1 red2 red/blue3 white4 white/blue

extension cable

terminal strip KL2terminal connection

1 red2 grey3 white4 blue

shield terminal

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FLUXUS® F502BT Technical specification

FLEXIM GmbH

Wolfener Str. 36

12681 Berlin

Germany

Tel.: +49 (30) 93 66 76 60

Fax: +49 (30) 93 66 76 80

internet: www.flexim.com

e-mail: info@flexim.com

Subject to change without notification. Errors excepted.

FLUXUS® is a registered trademark of FLEXIM GmbH.