Hach Flo-Dar User Manual
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Hach Flo-Dar User Manual

Open channel non-contact radar sensor with optional surcharge velocity sensor
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DOC026.53.00786
Flo-Dar™ Sensor
Open Channel Non-Contact Radar Sensor
with Optional Surcharge Velocity Sensor
USER MANUAL
July 2010, Edition 3
© HACH Company, . All rights reserved. Printed in the U.S.A.

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Summary of Contents for Hach Flo-Dar

  • Page 1 DOC026.53.00786 Flo-Dar™ Sensor Open Channel Non-Contact Radar Sensor with Optional Surcharge Velocity Sensor USER MANUAL July 2010, Edition 3 © HACH Company, . All rights reserved. Printed in the U.S.A.

  • Page 3: Table Of Contents

    3.2.2.2 Install the frame on the wall ..................19 3.2.2.3 Install the sensor on the frame................. 21 3.2.2.4 Align the sensor vertically—Flo-Dar without SVS ............ 21 3.2.2.5 Align the sensor vertically—Flo-Dar with SVS ............22 3.2.2.6 Align the sensor horizontally ..................23 3.2.2.7 Make a final alignment check...................
  • Page 4 Table of contents...

  • Page 5: Section 1 Specifications

    Standard length: 9 m (30 ft); maximum length: 305 m (1000 ft) Method: Ultrasonic Standard operating range from Flo-Dar housing to liquid: 0 to 152.4 cm (0 to 60 in.) Depth measurement Optional extended operating range from transducer face to liquid: 0 to 6.1 m (0 to 20 ft) (with 43.18 cm (17 in.) deadband), temperature compensated...
  • Page 6 Specifications Surcharge conditions depth/velocity Depth (standard with Flo-Dar Sensor) Surcharge depth supplied by Flo-Dar sensor Method: Electromagnetic Range: ±4.8 m/s (±16 ft/s) Velocity (with optional surcharge velocity sensor) Accuracy: ±0.15 ft/s or 4% of reading, whichever is greater Zero stability: >±0.05 ft/s...

  • Page 7: Section 2 General Information

    Section 2 General information 2.1 Safety information Please read this entire manual before unpacking, setting up, or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment. To ensure that the protection provided by this equipment is not impaired, do not use or install this equipment in any manner other than that specified in this manual.

  • Page 8: Confined Space Precautions

    Remarque importante : Les informations suivantes sont fournies dans le but d'informer les utilisateurs des capteurs Flo-Dar des dangers et des risques associés à l'accès aux espaces confinés. On April 15, 1993, OSHA’s final ruling on CFR 1910.146, Permit Required Confined Spaces, became law.

  • Page 9: Fcc Regulations

    2.2 Product overview The Flo-Dar Sensor measures the flow velocity and liquid depth in open channels using radar and ultrasonic technology. The unit is designed to withstand submersion during surcharge conditions. The optional surcharge velocity sensor provides velocity measurements during surcharge conditions.

  • Page 10: Theory Of Operation

    Non-hazardous environment 2.2.1 Theory of operation The Flo-Dar Sensor is mounted above an open channel of water and measures the surface velocity and depth from above the surface of the water. The two measurements are used to calculate the flow rate.

  • Page 11: General Information

    The pipe diameter is used to convert the distance to water depth. The depth sensor on the Flo-Dar unit can measure distances up to 1.5 m (5 ft). For larger channels, an extended range sensor is available to measure up to 6.1 m (20 ft).
  • Page 12 General information...

  • Page 13: Section 3 Installation

    The instrument components with options are shown in Figure Figure 2 Instrument components Surcharge velocity sensor (SVS) (optional) 10 Clamp bolt, ¼-20 x 1 in. (8x) Flo-Dar sensor 11 Anchor nut, -16 (2x) Optional extended depth sensor 12 Anchor washer (2x)

  • Page 14: Mechanical Installation

    Installation 3.2 Mechanical installation 3.2.1 Site location guidelines For best accuracy, install the sensor where the flow is not turbulent. An ideal location is in a long, straight channel or pipe. Outfalls, vertical drops, baffles, curves or junctions cause the velocity profile to become distorted. Where there are outfalls, vertical drops, baffles, curves or junctions, install the sensor upstream or downstream as shown in Figure 3...
  • Page 15 Installation Figure 4 Sensor location near a curve, elbow or junction Acceptable upstream sensor location Distance downstream: 10 x pipe diameter Acceptable downstream sensor location Distance upstream: 5 x pipe diameter...

  • Page 16: Sensor Installation

    (Figure de la page 8). Mount the Flo-Dar sensor above the open channel on the wall of the manhole. A pole is available for retrieval of the Flo-Dar sensor without entry into the manhole. For temporary installation, an optional Jack-bar is available (see...
  • Page 17 Installation The Flo-Dar sensor dimensions are shown in Figure 5 Figure Figure 5 Flo-Dar sensor dimensions Optional extended depth sensor Minimum clearance for cable Minimum clearance for cable with extended depth sensor...
  • Page 18 Installation Figure 6 Flo-Dar sensor with SVS dimensions Minimum clearance for cable...

  • Page 19: Assemble The Clamps On The Frame And Wall Bracket

    Installation The dimensions of the standard frame for wall installation are shown in Figure Figure 7 Standard frame dimensions 22.8 in. with 2¼ in. spacer; 32.6 in. with 12 in. spacer 3.2.2.1 Assemble the clamps on the frame and wall bracket Install the clamps on the frame and wall mount bracket before installation on the wall.
  • Page 20 Installation 3. Position the other two clamp halves around the front end of the frame as shown in Figure Note: In most cases the front of the frame will point toward the wall as shown in Figure 8 (see also Figure 12 on page 23).

  • Page 21: Install The Frame On The Wall

    (Figure 9). The wall brackets will be installed above and below this mark. • Flo-Dar without SVS—make sure that when the sensor is in the frame, the radar beam will not be blocked by the wall or channel (Figure 11).
  • Page 22 Installation Figure 9 Wall installation Distance from crown of pipe to top of frame Washer Anchor...

  • Page 23: Install The Sensor On The Frame

    Bubble level Bail 3.2.2.4 Align the sensor vertically—Flo-Dar without SVS The sensor must be aligned vertically to make sure that the sensor is above the flow and that the radar beam will not be blocked by the wall or pipe (Figure 11).

  • Page 24: Align The Sensor Vertically-Flo-Dar With Svs

    Installation Figure 11 Vertical alignment of Flo-Dar sensor Spacer Distance from crown of pipe to top of frame 3.2.2.5 Align the sensor vertically—Flo-Dar with SVS The sensor must be aligned vertically to make sure that the sensor is above the flow under normal full flow conditions and that the SVS is activated under surcharge conditions.

  • Page 25: Align The Sensor Horizontally

    Installation 4. Tighten the clamp and measure the frame position again to make sure it is at the correct position. Figure 12 Vertical alignment of Flo-Dar sensor with SVS Spacer SVS sensor (optional) Distance from crown of pipe to top of frame 3.2.2.6 Align the sensor horizontally...

  • Page 26: Make A Final Alignment Check

    Installation 3.2.2.7 Make a final alignment check The correct vertical and horizontal alignment of the sensor is necessary for accurate measurements. 1. Measure the vertical alignment (section 3.2.2.4 on page 21 section 3.2.2.5 on page 22) and make adjustments if necessary. 2.
  • Page 27 Installation Figure 14 Extended frame dimensions 29.1 in. with 2¼ in. spacer; 38.8 in. with 12 in. spacer Figure 15 Vertical alignment with extended depth sensor Spacer...

  • Page 28: Measure The Sensor Offset

    Installation 3.2.3 Measure the sensor offset The sensor offset is the distance from the top of the frame to the bottom of the pipe or channel. This distance will be entered into the software and is necessary for accurate flow calculations. If the extended depth sensor (section 3.2.2.8 on page 24) is installed on the wall without...

  • Page 29: Measure The Pipe Diameter

    Installation 3.2.4 Measure the pipe diameter The correct diameter of the pipe or channel is necessary for accurate flow calculations. 1. Measure the inside pipe diameter (I.D.) at three locations (Figure 17). Be sure that the measurements are accurate. 2. Calculate the average of the three measurements. Record this number for use during the software setup for the site.

  • Page 30: Connection To The Logger Or Controller

    Connect the cable from the Flo-Dar sensor to the logger or the controller: • Logger–connect the cable from the Flo-Dar sensor to the sensor connector on the logger. If the Flo-Dar sensor has the SVS component, connect the cable from the SVS component to the sensor connector on the logger. •...

  • Page 31: Section 4 Operation

    Refer to the Flo-Ware user manual (DOC016.53.80112) for details on how to set up the Flo-Dar sensor. The Flo-Ware user manual can be downloaded from www.Hachflow.com, or through the Documents and manuals link in the Main screen of the Flo-Ware...
  • Page 32 Operation...

  • Page 33: Section 5 Maintenance

    AVERTISSEMENT Danger d'exposition à la RF radar. Même si la puissance des micro-ondes du Flo-Dar est très faible (~15 mW) et est largement en dessous des limites recommandées par le gouvernement pour les environnements non-contrôlés, les utilisateurs de ce produit devront suivre des protocoles de sécurité appropriés pour la manipulation des appareils équipés de transmetteurs ayant une fréquence...

  • Page 34: Preventative Maintenance

    Inspect the cable connectors for any damage or corrosion and tighten all connectors in the system. The only parts of the Flo-Dar system that can be replaced by the user are the bail assembly and the cable. If the sensor becomes defective, it must be replaced as a complete unit.

  • Page 35: Cable Replacement

    The desiccant canister contains beads of silica gel which ensure proper operation of the pressure transducer located in the Flo-Dar Sensor. When the beads are yellow, they can absorb moisture from the air. When they are green, they are saturated and cannot absorb any more moisture from the air, and they must be replaced immediately.

  • Page 36: Hydrophobic Filter Description

    Maintenance 5. Refill the canister tube with yellow desiccant beads (Cat. No. 875500). Inspect the O-ring (Cat. No. 5252) on the bottom cap for cracking, pits, or evidence of leakage. Replace if necessary. Note: Applying O-ring grease to new or dry O-rings improves the ease of insertion, sealing, and life span of the O-ring.

  • Page 37: Hydrophobic Filter Replacement Procedure

    Maintenance 5.6 Hydrophobic filter replacement procedure 1. Disconnect the tubing from the top of the desiccant canister. 2. Unscrew the hex-head tubing nipple from the top of the canister and discard the old filter. 3. Discard any remnants of Teflon tape from the nipple threads. Apply two turns of Teflon tape (Cat.
  • Page 38 Maintenance...

  • Page 39: Section 6 Replacement Parts And Accessories

    FDJCTBOXCBL-100 potting kit) Cable assembly, 100 ft, connector on both ends FD9000CBL-100 Desiccant cartridge assembly 8542000 Flo-Dar sensor 890004901 SVS sensor, 30-ft cable, replacement only 600006203 Wall mount assembly, standard frame (includes frame and hardware) 800016701 Wall mount assembly, extended frame (includes frame and hardware)
  • Page 40 Replacement Parts and Accessories...

  • Page 41: Section 7 Contact Information

    Email: site@flow-tronic.com www.flow-tronic.com Outside the U.S.A. and EU Hach Company maintains a worldwide network of dealers and distributors. To locate a representative, send an email to hachflowsales@hach.com or visit www.hachflow.com. Technical Support Technical and Customer Service Department personnel are eager to answer questions about our products and their use.
  • Page 42 Contact Information 6. Write the SRN number on the shipping box. 7. Make sure that all return shipments are insured. 8. Address all shipments to: Hach Company 5600 Lindbergh Drive - North Dock Loveland, Colorado, 80539-0389 U.S.A. Attn: SRN#XXX...

  • Page 43: Section 8 Limited Warranty

    Section 8 Limited warranty Manufacturer warrants all products of its manufacture to be free from defects in workmanship and material under normal use and service. This warranty extends for a period of twelve (12) months after date of shipment, unless altered by mutual agreement between the purchaser and manufacturer prior to the shipment of the product.
  • Page 44 Limited warranty...

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