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Hydrostatic Tank Gauging
Accurate direct mass measurement.
Hydrostatic Tank Gauging (HTG) offers direct mass measurement
in connection with high accuracy hydrostatic pressure transmitters.
Honeywell Enraf HTG supports transmitters which use HART or
Foundation Fieldbus protocol, allowing connection to any preferred
pressure transmitter. Such a transmitter near the bottom of the tank
measures the static head of the liquid (optional requirement can be
to add a pressure transmitter to compensate for vapor pressure).
The density is then determined by adding a second pressure transmitter at a known distance
above the fi rst transmitter. A temperature measurement near the transmitters where the density
is determined can be added for calculation of density at reference temperature. Tank data
from the HTG system is gathered and transmitted by the Field Display and Interface unit to a
supervisory system.
Technical specifications Hydrostatic Tank Gauging
Measuring specifications
Accuracy * : For mass Inventory < 0.04 %
Transfer < 0.03 %
Principles
Measuring principle : Hydrostatic differential pressure measurement
Field Display & InterfaceDisplay
Type : LCD contrast adjustable, 2 lines, 16 alphanumeric characters per line
Mechanical
Dimensions (w x h x d) : 208 mm x 198 mm x 300 mm (8.2” x 7.8” x 11.9”)
Weight : 12 kg (26 lb)
Cable entries : 3 pcs 3/4” NPT threaded (Ex d glands or sealed conduit may be required)
Environmental
Ambient temperature : - 40 °C to + 60 °C (- 40 °F to + 140 °F)
Protection class : IP 67 / NEMA 6P
Safety : Explosion proof II 2 G EEx d IIB T6 or EEx d [ia/ib] IIB T6 according to ATEX
- Class I, Division 1, Groups B, C and D, in acc. to NFPA 70 (FM, USA)
Materials
Housing : Chromatized cast aluminum Int. reg. AA A356 G.Al.Si.7Mg wa (3.2371.61) DIN 1725
O-rings : Cover Silicone / FEP (other NBR 70)
Electrical
Power supply : 10/130/220 V (+10% to -20%) and 230 V (±15%), optional 65 V (+10% to -20%),
also suitable for 240 V (+10% to -20%)
Power rating : 20 VA, Imax - 2 A
Isolating voltage : > 1.500 V
Lightning protection : Full galvanic separation via isolating Transformers
Options
For options see Product sheet Field Display & Interface
Hydrostatic pressure transmitterAdvised specifications for installations up to 0.2 MPa (29 psi)
Type : Intelligent digital hydrostatic pressure transmitter
Range : P 1 and P 2 = up to 5 bar / 0.5 MPa (72,5 psi), P3 = up to 0.1 bar / 0,01 MPa (1,45 psi)
Mechanical
Flanges : 2” 150 lbs ANSI, rf or 2” 300 lbs ANSI rf or
3” 150 lbs ANSI, rf or 3” 300 lbs ANSI, rf for other tank connections contact Honeywell Enraf
Environmental
Ambient temperature : - 40 °C to + 60 °C (- 40 °F to + 140 °F)
Product temperature : - 40 °C to + 120 °C (- 40 °F to + 248 °F)
Protection class : IP 65, (NEMA 4X)
Safety : Intrinsically safe for connection to FDI
- II 1 G EEx ia II according to ATEX
- Class I, Division 1, Groups A, B, C and D, in acc. to NFPA 70 (FM, USA)
Materials
Housing : Weather proof IP 67
Electrical
Power supply : Intrinsically safe from Field Display & Interface via the two transmission lines
Transmission
Type : HART protocol (for Foundation Fieldbus, please consult factory for the best system architecture)
Cabling (transmitter-FDI) : Advise < 50 m however depending on type of cable. Twisted pair, shielded.
*) Under reference conditions and a full tank. For other accuracy information see our brochure Hydrostatic Gauging Systems.
Accuracy pressure transmitter ± 0.02%
Identification code
Pos 1 ApplicationU General purposeX W&M certified
Pos 2 Data transmissionE Enraf Biphase mark protocol (standard)R RS232C GPU protocol (only when Pos 3 = B, C, J, U or Z)S RS485 GPU protocol (only when Pos 3 = B, C, J, U or Z)V RS232C standard Modbus (only when Pos 3 = B, C, J, U or Z)W RS485 standard Modbus (only when Pos 3 = B, C, J, U or Z)
Pos 3 I/O optionsC VITO temperature and/or water probeJ VITO temperature and/or water probe + HART device(s)U Spot temperature Pt100 + HART device(s)Y Analog level output + spot temperature Pt100 + VITO temperature and/or water probe + HART device(s)
Pos 4 Alarm relay and fallback relayF With alarm relay and fallback relayZ Without alarm relay and fallback relay
Pos 5, 6, 7 Instrument designation8 7 7 Field Display & Interface
Pos 8 Mains supplyA 220V 50/60 HzC 110V 50/60 HzK 230V 50/60 HzR 130V 50/60 HzS 65V 50/60 Hz
Pos 9 ApplicationT HTG U HTG with water probe if Pos 3 = C, J or Y
Pos 10 Safety approvalsA ATEX EuropeC CSA CanadaF FM USA
For other approvals please contact your nearest Honeywell Enraf office
U E C F 8 7 7 K T A Typical identification code
8 7 7 Your identification code
EN-09-39-USDecember 2009© 2009 Honeywell International Inc.
Configuration
For More InformationTo learn more about Honeywell Enraf’ssolutions, contact your Honeywell Enraf account manager or visit www.honeywellenraf.com.
AmericasHoneywell Enraf Americas, Inc.2000 Northfield Ct.Roswell, GA 30076 USAPhone: +1 770 475 1900Email: [email protected]
Europe, Middle East and AfricaHoneywell EnrafDelftechpark 392628 XJ DelftThe NetherlandsPhone: +31 (0)15 2701 100Email: [email protected]
Asia PacificHoneywell Pte Ltd.17 Changi Business Park Central 1Singapore 486073Phone: +65 6355 2828Email: [email protected]
Temperature
P3
P2
P1
FDI
FDI
P2
P1
Temp.