ABB 7835 User Manual
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ABB 7835 User Manual

Hydrazine monitor
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User Guide IM/7835–EN Rev. P
7835
Hydrazine Monitor

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Summary of Contents for ABB 7835

  • Page 1 User Guide IM/7835–EN Rev. P 7835 Hydrazine Monitor...
  • Page 2 Cert. No. Q 05907 As a part of ABB, a world leader in process automation technology, we offer customers EN 29001 (ISO 9001) application expertise, service and support worldwide.

  • Page 3: Table Of Contents

    4.8.1 Inlet Pipe .............12 4.8.2 Drain Pipe ........... 12 5 Commissioning ............. 13 Start-Up ..............13 Sensor Unit ............13 Setting Flowrates ..........13 5.3.1 Standard Solution Flowrate ......14 5.3.2 Sample Flowrate ........14 5.3.3 Sample Temperature ......... 15 IM/7835–EN Rev. P...

  • Page 4: Safety

    Products marked with this symbol indicates that the product contains toxic or hazardous substances or elements. The number inside the symbol indicates the environmental protection use period in years. IM/7835–EN Rev. P...

  • Page 5: Product Recycling Information

    Note. The following only applies to European customers. impaired, do not use or install this equipment in any manner other than that which is specified in this manual. ABB is committed to ensuring that the risk of 1.9 Safety Conventions any environmental damage or pollution caused by any of its products is minimized as far as Warning.

  • Page 6: Safety Recommendations

    Other than the serviceable items listed in Section 10, page 27, none of the instrument's components can be serviced by the user. Only personnel from ABB or its approved representative(s) is (are) authorized to attempt repairs to the system and only components formally approved by the manufacturer should be used.

  • Page 7: Introduction

    System configuration must be carried out only by 2.3 Transmitter Unit users or personnel with approved access rights (user Operation and programming of the 7835 is via 4 keys and a privileges). digital display located on the front of the transmitter.

  • Page 8: Mechanical Installation

    5. Release the 2 x M6 captive screws securing the 3.2.2 Sensor and Sensor (Wet Section Assembly) electronics assembly plate to the back of the case and ABB recommend returning the sensor back to the Company for remove completely. safe disposal, preferably with the electrolyte/filling solution 6.

  • Page 9: Sensor Unit

    Cable Gland 6.4 mm in.) O.D. Stainless Ground (Earth) Stud (M6) 10 (0.4) 35 (1.4) (1.4) (0.8) 75 (3.0) 160 (6.3) To fit 10 mm (0.4 in.) Flexible Tube Fig. 3.2 Sensor Unit Dimension and Installation Detail IM/7835–EN Rev. P...

  • Page 10: Electrical Installation

    Company, the protection provided by the Warning. Use Fuse Rating 1.6 A Type F equipment may be impaired. All equipment connected to the transmitter's terminals must comply with local safety standards (IEC 60950, Fig. 4.1 Power Supply Connections EN601010-1). IM/7835–EN Rev. P...

  • Page 11: Transmitter Unit - Access To Terminals

    I OUT 1+ I OUT 1– CAL FAIL RANGE 2* INDICATOR RANGE 1* *Refer to Fig. , page for details of resistor networks for remote range indication Fig. 4.3 Transmitter Unit Cable Gland Entries and Electrical Connections IM/7835–EN Rev. P...

  • Page 12: Transmitter Unit - Ancillary Equipment

    Fig. 4.4. A recorder with suitable voltage and resistance inputs can be provided by ABB. The recorder provides 60 % scale deflection for Range 1 and 70 % scale deflection for Range 2.

  • Page 13: Sensor Unit - Cable Gland Entries And Connections

    Tx/Rx – White Solenoid Valve Solenoid Valve Hydrazine Sensor + Hydrazine Sensor – Blue Pt1000 Temperature Sensor Yellow To Sensor To Solenoid Valve Pt1000 Temperature Sensor Black Fig. 4.6 Sensor Unit Cable Gland Entries and Electrical Connections IM/7835–EN Rev. P...

  • Page 14: Sensor Unit - Sample Requirements

    (0.4 in.) bore plastic or rubber tubing. Clean water waste can be taken from one connection (and NaOH dosed waste from the other connection can be used for pH checking) grab sample collection or can be directed to a contaminated-water drain. IM/7835–EN Rev. P...

  • Page 15: Commissioning

    14. Calibrate as detailed in Section 7, page 19. 15. The transmitter is now in operation. Note. If, during normal operation, the transmitter does not display the expected hydrazine level, refer to Section 8, page 20 for fault-finding information. IM/7835–EN Rev. P...

  • Page 16: Standard Solution Flowrate

    17.8 24.1 18.1 24.3 18.4 24.4 18.7 24.6 19.0 24.8 19.2 24.9 19.5 25.1 19.7 25.2 20.0 25.4 20.3 25.5 20.5 25.7 20.8 25.8 21.0 25.7 21.2 25.8 21.5 Table 5.1 Relationship of Sample Temperature to Flow IM/7835–EN Rev. P...

  • Page 17: Sample Temperature

    Constant Head Unit Container Filler Cap Outlet Valve Filler Cap Outlet Valve Adjustable Overflow Tube Boyle-Mariotte Tubes To Drain Reagent Microporous Solenoid Valve Dosing Disc Chamber Sensor Sample Inlet Fig. 5.2 Sample System During Calibration Phase – Flow Diagram IM/7835–EN Rev. P...

  • Page 18: Programming

    If a password has been set, the Enter Password menu is shown and a password must be entered to access further menus – see Device Setup / Security Setup (page 17) for details of how to setup passwords. 4. To return to the Operator page from Access Level, press IM/7835–EN Rev. P...

  • Page 19: Menus

    5. Repeat step 4 for the remaining characters. 6. When the last character has been highlighted, press to set the password for Standard level access. Reset Password Resets the password to factory values. IM/7835–EN Rev. P...

  • Page 20: Input/Output

    The transmitter’s software revision. Sensor Sensor Type The sensor type. Serial Number The sensor’s date of manufacturer. Date of Manufacture The sensor’s date of manufacturer. Hardware Revision The sensor’s hardware revision. Software Revision The sensor’s software revision. IM/7835–EN Rev. P...

  • Page 21: Calibration

    Calibrate page. 4. Press twice to return to the Calibrate main menu. 6. To return to the Operator page, press or, to set the Standard Solution value, press and proceed to step 3 in Section 7.3. IM/7835–EN Rev. P...

  • Page 22: Troubleshooting

    5 °C (41 °F). 5 °C (41 °F) is applied. Sensor approaching the end of its life and is likely Cal. Near Fail Sensor (or system) requires attention soon. to fail soon. Table 8.1 Diagnostic Messages IM/7835–EN Rev. P...

  • Page 23: Maintenance

    6. Close the reagent outlet valve and connect the reagent tube to the top of the reagent dosing chamber. 7. Open the reagent outlet valve. IM/7835–EN Rev. P...

  • Page 24: Yearly

    Feed tubing down through procedure. support bracket. 6. Fit 7835 229 (first of 2) to constant head unit outlet and Warning. This unit contains caustic and other solutions solenoid valve. which must be handled with care. Wear gloves and eye protection.

  • Page 25: Shut-Down Procedures

    Connect 7835 230 to the reagent dosing 1. Turn the sensor plugs, located on the side of the liquid chamber outlet and lead it behind the coil former. Wind on...

  • Page 26: Unscheduled Servicing

    If the gel shows signs of being very liquid and leaks out of the sensor, refurbish the sensor – see Section 9.4.5, page 25. IM/7835–EN Rev. P...

  • Page 27: Cleaning The Platinum Anode And Sensor Ceramic

    To remove air, lift the platinum electrode slightly by the rubber bung and allow some liquid to escape, carrying any bubbles with it. Alternatively, connect a syringe to the sensor outlet and apply slight suction. IM/7835–EN Rev. P...

  • Page 28: Simple Electronic Check

    Note. The monitor calibration signals are established by Note. When the electronic systems are operating correctly, read-only software and cannot be changed by users. the displayed concentration value should be within ± 0.2 µg kg of the selected value. IM/7835–EN Rev. P...

  • Page 29: Spares List

    Electrical Lead Assembly for Sensor 0216 403 External Sample Input Valve 7835 430 Tool for replacing Microporous Disc 0216 404 Sample Filter, in fittings, 60 microns 9435 040 Resistor kit for Remote Range Recorder 9439 950 Sensor Simulator IM/7835–EN Rev. P...

  • Page 30: Specification

    Transmitter and sensor Ambient temperature: 0 to 55 °C (32 to 131 °F) Storage temperature: –20 to 70°C (–4 to 158 °F) Operating humidity: Up to 95% RH, non-condensing Sunlight: Store and operate out of direct sunlight IM/7835–EN Rev. P...
  • Page 31 85 to 265 V AC, 50/60 Hz, 50 VA Remote range indication 2 volt-free contacts rated 250 V AC, 2 A non-inductive Emissions Conforms to EN61326–1 : 2006 Design and manufacturing standards CE mark Electrical safety BS–EN 61010 – 1 : 2001 DS/7835-EN Rev. H IM/7835–EN Rev. P...
  • Page 32 7835 Hydrazine Monitor Notes Notes IM/7835–EN Rev. P...
  • Page 33 7835 Hydrazine Monitor Notes IM/7835–EN Rev. P...
  • Page 34 7835 Hydrazine Monitor Notes IM/7835–EN Rev. P...
  • Page 35 — Food & Beverage offices for details on your nearest Service and Repair Centre. — Manufacturing — Metals and Minerals — Oil, Gas & Petrochemical ABB Limited — Pulp and Paper Tel: +44 (0)1453 826661 Drives and Motors Fax: +44 (0)1453 829671 —...
  • Page 36 Oldends Lane notice. With regard to purchase orders, the agreed Stonehouse particulars shall prevail. ABB does not accept any Gloucestershire GL10 3TA responsibility whatsoever for potential errors or possible lack of information in this document.

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