704-5120-540

Horizon™ Model 704 Guided Wave Radar Level Transmitter DESCRIPTION The Horizon Model 704 Transmitter is an intermediately priced 24 VDC, loop-powered, liquid level transmitter based upon Guided Wave Radar (GWR) technology. The transmitter is designed to provide all of the performance advantages of GWR. Available in a nonrotatable, single compartment plastic or aluminum housing, this transmitter offers simple configuration with three push buttons and a 2-line × 8 character liquid crystal display. The Model 704 covers a broad application range by utilizing coaxial and twin rod probes. TECHNOLOGY Horizon Guided Wave Radar is based upon Time Domain Reflectometry (TDR). TDR utilizes pulses of high frequency electromagnetic energy transmitted down a probe. When a pulse reaches a surface that has a higher dielectric than the vapor space in which it is traveling, the pulse is reflected. High-speed timing circuitry precisely measures the total transit time and provides an accurate measure of the liquid level. FEATURES • Two-wire, 24 VDC, loop-powered transmitter • HART® communications (optional) • Varying dielectric constant or specific gravity will have minimal effect on performance APPLICATIONS MEDIA: Liquids or slurries; hydrocarbons to waterbased media (dielectric constants from 1.7 to 100) VESSELS: Most process or storage vessels up to rated probe temperature and pressure CONDITIONS: Virtually all level measurement and control applications including those process conditions exhibiting visible vapors, turbulence and varying dielectric media or specific gravity • Probe designs up to +400° F (+200° C), 1000 psig (70 bar) • Available with coaxial and twin rod probes • No calibration or level movement required • 16 foot (4.8 meter) measuring range • Lexan® or Cast aluminum housings • Optional 2-line × 8 character LCD and 3-button keypad • IS, XP, and Non-Incendive approvals TRANSMITTER SPECIFICATIONS FUNCTIONAL/PHYSICAL Model 704 Signal output Span Resolution Loop resistance Diagnostic alarm Œ User interface Display Power (at terminals) Menu language Housing material Net/Gross weight Overall dimensions Aluminum Lexan Damping Analog Display 4–20 mA (3.8 to 20.5 mA useable) 6 to 192 inches (15 to 488 cm) 550 Ω @ 24 VDC (20.5 mA) 0 to 10 seconds 3.6 mA, 22 mA, Hold 3-button keypad and/or HART communicator (HART communicator Magnetrol P/N 89-5213-XXX sold separately) 2-line × 8-character LCD 12 to 28.6 VDC English, German, French or Spanish Aluminum A356T6 (< 0.2% copper) Lexan, UL94-V0 rating 3.5 lbs (1.59 kg) 1.5 lbs (.68 kg) H 6.91" (175 mm) x W 3.75" (95 mm) 0.01 mA 0.10 inch or 0.1 cm Œ 3.6 mA fault output not available with both HART output and LCD. PERFORMANCE Use with probes Reference conditions Linearity Resolution Repeatability Hysteresis Response time Warm-up time Operating temperature range Aluminum housing Plastic housing LCD Operating temperature effect Process dielectric effect Humidity Electromagnetic compatibility 7XA/7XP/7XR probe 7XB probe 7XA, 7XB, 7XP & 7XR Reflection from water at +70° F (+20° C) with 72" (183 mm) probe ±0.25 inch (6.3 mm) ±0.50 inch (12.7 mm) ±0.15 inch (3.8 mm) 0.15 inch (3.8 mm) 0.15 inch (3.8 mm) < 1 second < 5 seconds -40° to +175° F (-40° to +80° C) -40° to +160° F (-40° to +70° C) -5° to +160° F (-20° to +70° C) Approximately ±0.03% of probe length / °C < 0.5 inch (12.7 mm) 0–99%, non-condensing Meets CE requirements (EN 61000-6-2/2001, EN 61000-6-4/2001) (Twin Rod probes must be used in metallic vessel or stillwell to maintain CE compliance) 2 PROBE OVERVIEW Choosing the proper Guided Wave Radar (GWR) probe is the most important decision in the application process. The probe configuration establishes fundamental performance characteristics. Coaxial, twin element (rod or cable) and single element (rod or cable) are the three basic configurations used today; each with specific strengths and weaknesses. COAXIAL PROBES The Coaxial probe is the most efficient of all probe configurations and should be the first consideration in all applications. Analogous to the efficiency of modern, coaxial cable, coaxial probes allow almost unimpeded movement of the high frequency pulses throughout its length. The electromagnetic field that develops between the inner rod and outer tube is completely contained. See Figure 1. The efficiency and sensitivity of a coaxial configuration yields robust signal strength even in extremely low dielectric (εr > 1.7) applications. The sensitivity of this “closed” design, however, also makes it more susceptible to measurement error in applications of coating and buildup. Figure 1 Coaxial Probe TWIN ROD PROBES The relationship of the twin rod probe to a coaxial is similar to that of older, twin-lead, antenna lead-in to modern, coaxial cable. The 300-ohm twin-lead cable simply does not have the efficiency of the 75-ohm coax. The parallel conductor design is less sensitive than the concentric coaxial. See Figure 2. This translates to Twin Rod GWR probes measuring dielectrics of only εr > 2.5. The “open” design also allows more accurate measurement where coating/ buildup are possible. A film coating has little effect on performance. However, bridging of material between the rods or buildup on the spacers can cause improper measurement and should be avoided. Figure 2 also shows that the electromagnetic field develops not only between the rods, but also expands outward making it more sensitive to proximity effects of objects located in the immediate area. Figure 2 Twin Rod Probe NOZZLES The 7XB Twin Rod probe may be susceptible to objects that are in close proximity. The following rules should be followed for proper application: 1. Nozzle should be 3" (80 mm) diameter or larger. 2. For nozzles < 3" (80 mm) diameter, the bottom of the inactive section of the probe should be flush with the bottom of the nozzle or extend into the vessel. OBSTRUCTIONS (METALLIC) A B 7XB Twin Rod probes should be installed so the active rod (below the 4" (100 mm) inactive sheath) is > 1" (25 mm) from metallic objects such as pipes, ladders, etc. Bare tank walls parallel to the probe are acceptable. TURBULENCE Figure 3 The bottom of the probe should be stabilized if turbulence will cause a deflection of more than 3" (80 mm) at 10' (3 m) of length. The probe should not make contact with a metal tank. 3 COAXIAL PROBE MATRIX 7XA Standard 7XR Overfill Overfill, temps +300° to +400° F (+150° to +200° C); clean, low viscosity liquids Recommended for General purpose; clean low viscosity liquids < 300° F (150° C) Not recommended for Materials/Wetted parts Optional Process seal Spacers Diameter Process connection thread Flange ANSI (DIN) Length Transition zone  Top Bottom Process temperature Ž Maximum Coating and buildup, foam 316L SS, TFE, Viton® GFLT Hastelloy® C, Monel Viton® GFLT O-ring Œ TFE ∅ .3125" (8 mm) rod ∅ .875" (22 mm) tube 3 ⁄4" NPT, 1" BSP 1" to 4" (DN25 to 100) 1" (25 mm) @ εr = 1.7 6" (150 mm) @ εr = 80 24 to 192 inches (60 to 488 cm) None 6" (150 mm) @ εr = 1.7 1" (25 mm) @ εr = 80 +400° F @ 270 psig (+200° C @ 18 bar) +300° F @ 400 psig (+150° C @ 27 bar) Minimum/cryogenic Process pressure Maximum -40° F @ 750 psig (-40° C @ 50 bar) 1000 psig @ 70° F (70 bar @ 20° C) Yes, not hermetic ≥ 1.7 500 None No No Yes No No Minimum/vacuum service Dielectric range Maximum viscosity (cP) Mounting effects Coating/Buildup Foam Corrosives Hygienic Overfill Approvals FM CSA ATEX OTHER Yes Yes Yes No  Transition Zone is dielectric dependent: εr = dielectric permittivity. Unit will function but accuracy will decrease in Transition Zone. Ž Refer to Ambient Temperature vs. Process Temperature graph on page 8. Œ Refer to Selection Chart on page 7 for optional O-rings. 4 COAXIAL PROBE MATRIX 7XP High Pressure Recommended for Clean, high pressure liquids < +400° F (+200° C) Coating and buildup, foam, steam 316L SS, TFE, Borosilicate, Inconel X750 Optional Hastelloy C, Monel Borosilicate TFE ∅ .3125" (8 mm) rod ∅ .875" (22 mm) tube ∅ .63" (15 mm) rod ∅ 1.75" (45 mm) tube 3 Not recommended for Materials/Wetted parts Process seal Spacers Diameter Standard Enlarged Process connection thread Standard Enlarged ⁄4" NPT, 1" BSP 2" NPT Flange ANSI (DIN) Standard Enlarged 1 to 4" (DN25 to 100) 2 to 4" (DN50 to 100) 24 to 240" (60 to 610 cm) 1" (25 mm) @ εr = 1.4 6" (150 mm) @ εr = 80 Length Transition zone  Top Bottom Process temperature Ž Maximum 6" (150 mm) @ εr = 1.4 1" (25 mm) @ εr = 80 +400° F @ 5500 psig (+200° C @ 379 bar) -320° F @ 6250 psig (-195° C @ 430 bar) 6250 psig @ +70° F (431 bar @ +20° C) Yes, not hermetic (< 10-8 cc/sec @ 1 atmos.) 1.7 to 100 Minimum/cryogenic Process pressure maximum Minimum/vacuum service Dielectric range Maximum viscosity (cP) Standard Enlarged Mounting effects Coating/Buildup Foam Corrosives Hygienic Overfill Approvals FM CSA ATEX OTHER 500 1500 None No No Yes No No Yes Yes Yes No 5 TWIN ROD PROBE 7XB Twin Rod-Rigid Recommended for Not recommended for Materials/Wetted parts Optional Process seal Spacers Diameter Process connection thread Flange ANSI (DIN) Length Transition zone  Top Bottom Deadband Process temperature Ž Top Maximum General purpose, foam, minor film coating Media bridging between rods or building up on spacers 316L stainless steel, TFE, Viton® GFLT Hastelloy C, Monel Viton® GFLT O-ring Œ TFE Two, ∅ .50" (13 mm) rod; .875" (22 mm) CL to CL 2" NPT, 2" BSP 2" to 4" (DN50 to 100) 1" (25 mm) @ εr > 10, 8" (200 mm) @ εr < 10 (+4" (100 mm) inactive) 6" (150 mm) @ εr = 2.5 1" (25 mm) @ εr = 80 24 to 192 inches (60 to 488 cm) 4"(+4" inactive section) +400° F @ 200 psig (+200° C @ 13 bar) -40° F @ 750 psig (-40° C @ 50 bar) 750 psig @ +70° F (50 bar @ +20° C) Yes, not hermetic ≥ 2.5 1500 Active rod > 1" from any obstruction Film: 3% max. error of coated length with conductive media Bridging not recommended Yes Yes No No Minimum/cryogenic Process pressure Maximum Minimum/vacuum service Dielectric range Maximum viscosity (cP) Mounting effects  Coating/Buildup  Foam Corrosives Hygienic Overfill Approvals FM CSA ATEX OTHER Yes Yes Yes No  Transition Zone is dielectric dependent: εr = dielectric permittivity. Unit will function but accuracy will decrease in Transition Zone. NOTE: Output may go to Fault mode when medium is within top 7 inches of probe and εr 12 Aegis PF128 8 +400° F +(200° C) Borosilicate N +800° F (+430° C) 7 DIMENSIONAL INCHES (MM) SPECIFICATIONS 6.91 (175) 4.04 (103) 7XA 7XR 7XA 7XR 2.81 6.61 (71) (168) Process Connection Process Connection 4.00 (102) Inactive Length 2.78 (71) 2.32 5.68 (59) (144) Process Connection Probe Insertion Length Probe Insertion Length Probe Insertion Length 0.88 (22) Model 7XA/7XR Probe NPT Threaded Connection Model 7XA/7XR Probe Flanged Connection Model 7XB Twin Rod Probe NPT Threaded Connection 6.91 (176) Mounting Flange 1.66 (42) 5.25 (33) Inactive Length Probe Insertion Length 5.43 (138) 6.91 (176) Model 7XP Probe Flanged Connection 7.80 (198) Process Conn. Probe Insertion Length Process Conn. Probe Insertion Length 1.63 (41) Model 7XB Twin Rod Probe Flanged Connection Model 7XP Probe Threaded Connection TEMPERATURE/PRESSURE 6500 5500 4500 3500 1200 1050 900 750 600 450 300 150 0 -350 200 180 CHARTS Ambient Temperature ° F Process Pressure, psi 160 140 120 100 80 60 40 20 0 -150 50 250 450 150 200 250 300 350 400 450 Process Temperature, °F (max. 400) 7XA & 7XR 7XB 7XP Process Temperature, °F Ambient Temperature vs Process Temperature 7XA & 7XR 7XB 7XP 8 TRANSMITTER MODEL NUMBER Models available for quick shipment, usually within one week after factory receipt of a purchase order, through the Expedite Ship Plan (ESP). BASIC MODEL NUMBER 704 Horizon Guided Wave Radar Level Transmitter for use with probe models 7XA, 7XB, 7XF, 7XR and 7X1 only POWER 5 24 VDC, Two-wire SIGNAL OUTPUT 0 1 4–20 mA only, without HART (must be ordered with Accessory Code A) 4–20 mA with HART (HART communicator Magnetrol P/N 89-5213-XXX sold separately) MENU LANGUAGE 1 2 3 4 English Spanish French German ACCESSORIES 0 A No digital display and keypad (must be ordered with Signal Output Code 1) Digital display and keypad MOUNTING/CLASSIFICATION 1 5 A Integral, General Purpose & Intrinsically Safe (FM & CSA), Non-Incendive (Class I, Div. 2) Integral, Explosion Proof (FM & CSA) (must be ordered with Housing Code 4) Integral, General Purpose & Intrinsically Safe (ATEX EEx ia IIC T4) HOUSING 3 4 Lexan, single compartment Cast aluminum, single compartment CONDUIT CONNECTION 0 1 3 ⁄4" NPT M20 7 0 4 5 9 PROBE MODEL NUMBER BASIC MODEL NUMBER 7E 7M Horizon GWR probe, English unit of measure Horizon GWR probe, Metric unit of measure CONFIGURATION/STYLE A B P R Coaxial, 3⁄4" process connection or larger Twin Rod, 2" NPT or 3" flanged process connection or larger Coaxial, High Pressure Coaxial, Overfill 3⁄4" process connection or larger (Dielectric (Dielectric (Dielectric (Dielectric range range range range ≥ ≥ ≥ ≥ 1.7) 2.5) 1.7) 1.7) MATERIAL OF CONSTRUCTION A B C 316/316L stainless steel Hastelloy C Monel PROCESS CONNECTION SIZE/TYPE Refer to next page for selections O-RINGS 0 1 2 8 N Viton® GFLT EPDM (Ethylene Propylene Rubber) Kalrez 4079 Aegis PF128 None (Use with Model 7XP) LENGTH – PROBE MODELS 7XA, 7XB, 7XP & 7XR 24 to 192 inches (60 to 488 cm) (unit of measure is determined by second digit of Model Number) Examples: 24 inches = 024; 60 centimeters = 060 7 10 PROBE MODEL CONTINUED NUMBER PROCESS CONNECTION SIZE/TYPE THREADED CONNECTIONS 11 22 41 42 ⁄4" NPT Thread Œ 1" BSP Thread Œ 2" NPT Thread  2" BSP Thread  3 Insertion Length NPT Process Connection Insertion Length BSP Process Connection Insertion Length ANSI or DIN Welded Flange Insertion Length Hygienic Flange ANSI RAISED FACE FLANGE CONNECTIONS 23 24 25 33 34 35 43 44 1" 150# 1" 300# 1" 600# 11⁄2" 150# 11⁄2" 300# 11⁄2" 600# 2" 150# 2" 300# ANSI Raised Face Flange Œ ANSI Raised Face Flange Œ ANSI Raised Face Flange Œ ANSI Raised Face Flange Œ ANSI Raised Face Flange Œ ANSI Raised Face Flange Œ ANSI Raised Face Flange Œ ANSI Raised Face Flange Œ 45 53 54 55 63 64 65 2" 3" 3" 3" 4" 4" 4" 600# 150# 300# 600# 150# 300# 600# ANSI Raised ANSI Raised ANSI Raised ANSI Raised ANSI Raised ANSI Raised ANSI Raised Face Face Face Face Face Face Face Flange Œ Flange Flange Flange Œ Flange Flange Flange Œ ANSI RING JOINT FLANGE CONNECTIONS 3K 4K 5K 6K 11⁄2" 600# 2" 600# 3" 600# 4" 600# ANSI Ring Joint Flange Œ ANSI Ring Joint Flange Œ ANSI Ring Joint Flange Œ ANSI Ring Joint Flange Œ DIN FLANGE CONNECTIONS BA BB BC CA CB CC DA DB DD DN DN DN DN DN DN DN DN DN 25, 25, 25, 40, 40, 40, 50, 50, 50, PN PN PN PN PN PN PN PN PN 16 25/40 64/100 16 25/40 64/100 16 25/40 64 DIN DIN DIN DIN DIN DIN DIN DIN DIN 2527 Form B Flange Œ 2527 Form B Flange Œ 2527 Form E Flange Œ 2527 Form B Flange Œ 2527 Form B Flange Œ 2527 Form E Flange Œ 2527 Form B Flange 2527 Form B Flange 2527 Form E Flange Œ DE EA EB ED EE FA FB FD FE DN 50, DN 80, DN 80, DN 80, DN 80, DN 100, DN 100, DN 100, DN 100, PN 100 PN 16 PN 25/40 PN 64 PN 100 PN 16 PN 25/40 PN 64 PN 100 DIN 2527 Form E Flange Œ DIN 2527 Form B Flange DIN 2527 Form B Flange DIN 2527 Form E Flange Œ DIN 2527 Form E Flange Œ DIN 2527 Form B Flange DIN 2527 Form B Flange DIN 2527 Form E Flange Œ DIN 2527 Form E Flange Œ Œ Configuration/Style Codes A only.  Configuration/Style Codes B only. 7 11 QUALITY The quality assurance system in place at Magnetrol guarantees the highest level of quality throughout the company. Magnetrol is committed to providing full customer satisfaction both in quality products and quality service. The Magnetrol quality assurance system is registered to ISO 9001 affirming its commitment to known international quality standards providing the strongest assurance of product/service quality available. ESP Expedite Ship Plan Several Models of Horizon Guided Wave Radar Transmitters are available for quick shipment, usually within one week after factory receipt of a purchase order, through the Expedite Ship Plan (ESP). Models covered by ESP service are color coded in the selection data charts. To take advantage of ESP, simply match the color coded model number codes (standard dimensions apply). ESP service may not apply to orders of ten units or more. Contact your local representative for lead times on larger volume orders, as well as other products and options. WARRANTY All Magnetrol electronic level and flow controls are warranted free of defects in materials or workmanship for one full year from the date of original factory shipment. If returned within the warranty period; and, upon factory inspection of the control, the cause of the claim is determined to be covered under the warranty; then, Magnetrol will repair or replace the control at no cost to the purchaser (or owner) other than transportation. Magnetrol shall not be liable for misapplication, labor claims, direct or consequential damage or expense arising from the installation or use of equipment. There are no other warranties expressed or implied, except special written warranties covering some Magnetrol products. For additional information, see Instruction Manual 57-603. 5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com 145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306 Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93 Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317 Copyright © 2010 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Performance specifications are effective with date of issue and are subject to change without notice. Hastelloy is a registered trademark of Haynes International, Inc. Lexan is a registered trademark of General Electric Viton® is a registered trademark of DuPont Performance Elastomers. BULLETIN: 57-104.4 EFFECTIVE: November 2010 SUPERSEDES: April 2008