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Hach 9186 Instrument Manual

Oxygen scavenger analyzer
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Catalog Number 621=691=086
9186 Oxygen Scavenger Analyzer
INSTRUMENT MANUAL
03/04 1ed
© Hach Company, 2004. All rights reserved.
eac/dp 03/04 1ed

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  • Page 1 Catalog Number 621=691=086 9186 Oxygen Scavenger Analyzer INSTRUMENT MANUAL 03/04 1ed © Hach Company, 2004. All rights reserved. eac/dp 03/04 1ed...

  • Page 2: Table Of Contents

    Table of Contents Section 1 Safety Precautions ............................4 Use of Hazard Information............................... 4 Precautionary Labels............................... 4 Section 2 Specifications ............................... 5 Section 3 General Description ............................. 6 3.1 Unpacking.................................. 6 3.2 Overview..................................6 3.3 Principle of Operation ..............................6 Section 4 Installation..............................
  • Page 3 Table of Contents 6.4.4 Viewing Calibration History ..........................36 6.4.5 Calibration-related Messages ........................36 Section 7 Maintenance..............................37 7.1 Scheduled Maintenance ............................37 7.1.1 Refilling the pH Conditioner ........................... 37 7.1.2 Replacing the Tubing............................37 7.1.3 Replacing the In-line Filter ..........................37 7.2 Unscheduled Maintenance ............................

  • Page 4: Section 1 Safety Precautions

    Section 1 Safety Precautions Please read this entire manual before unpacking, setting up, or operating this instrument. Pay particular attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment. Do not use or install this equipment in any manner other than that which is specified in this manual.

  • Page 5: Section 2 Specifications

    Section 2 Specifications Specifications are subject to change without notice. General Controller Dimensions 14.4 cm x 14.4 cm x 11.9 cm (5.6 in. x 5.6 in. x 4.6 in.) (W x H x D) Mounting Pre-mounted on panel Instrument Shipping Weight 4.1 kg (9 lb) Sample Requirements Sample Flow Rate to Analyzer...

  • Page 6: Section 3 General Description

    This instrument uses a 3-electrode amperometric method to measure concentration. 3.3 Principle of Operation The 9186 Analyzer continuously measures the amount of oxygen scavengers, dissolved hydrazine, and carbohydrazide in water. The measuring principle is based on the electrochemical method of 3-electrode amperometry.
  • Page 7 General Description Figure 1 Front View 9100 0.065 23.2 °C Display 2 Menu Enter zero WATER Analyzer (panel) Flow Meter (Cat. No. 694=000=001) Transmitter Measuring Cell (Cat. No. 09186=C=0100) Reference Electrode (Cat. No. 368429,00000) Venturi Block (Cat. No. 09186=C=0110) J-shaped piece of Tubing (Cat. No. 09186=A=0200) Counter Electrode Working Cell (Cat.
  • Page 8 General Description Figure 2 Back View ° Hach Company 5600 Lindberg Drive P.O. Box 389 Loveland, CO 80539 U.S.A. Type: Model: Serial No.: ETL LISTED UL STD 1262 H0492805390 CERTIFIED CSA STD C22.2 NO.142 Made in the E.E.C. Analyzer (panel)
  • Page 9 General Description Figure 3 Hydrazine Potential Intensity Curve –20 0 ppb 90 ppb 180 ppb 270 ppb 360 ppb Figure 4 Current vs. Hydrazine Concentration 100.00 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 ppb O2Red...

  • Page 10: Section 4 Installation

    Section 4 Installation DANGER This instrument should be installed by qualified technical personnel to ensure adherence to all applicable electrical and plumbing codes. 4.1 Environmental Considerations The instrument controller is designed for IP65, indoor/outdoor installation with an ambient temperature between 5 to 45 °C (41 to 113 °F). Do not mount the instrument in direct sunlight;...
  • Page 11 Installation Figure 5 Panel Dimensions 300.0 mm 228.0 mm (8.97 inches) (11.81 inches) 117.0 mm (4.60 inches) 15.0 mm 270.0 mm (0.60 inches) (10.62 inches) 3.17 mm (0.125 inches) Typical reference only 9100 0.065 23.2 °C 8.89 mm thru Display 2 Menu 0.35 inches) Enter...

  • Page 12: Installing The Reference Electrode

    Installation 4.3.2 Installing the Reference Electrode ®* 1. Place the seven small white Teflon beads through the hole at the top of the measuring cell as shown in Figure 6. The beads provide better mixing and self-cleaning. 2. Remove the reference electrode from its packaging. 3.

  • Page 13: Installing The In-Line Filter

    Installation 4.3.3 Installing the In-line Filter 1. On the back of the panel, connect ¼ in. tubing to the elbow fitting on the top of Note: Rinse out sample system before startup to prevent “crud the measuring cell (see Figure bursts”...
  • Page 14 Installation Figure 8 Connecting the Outlet Tubing 9100 0.065 23.2 °C ° Display 2 Menu Enter Hach Company 5600 Lindberg Drive P.O. Box 389 Loveland, CO 80539 U.S.A. Type: Model: Serial No.: ETL LISTED UL STD 1262 H0492805390 CERTIFIED CSA STD C22.2 NO.142 Made in the E.E.C.

  • Page 15: Electrical Connections

    This instrument has been designed to conform to this requirement. Hach can be a source of instrumentation Company recommends conduit for two reasons:...

  • Page 16: Electrostatic Discharge (Esd) Considerations

    Installation Figure 9 Connecting ac Power with Customer-supplied Power Cord Temp + Ind : D Model : 09125-A-2000 Temp – Serial No : 0104 549 Counter Vac : 100 - 240 V Work Wiring located behind the guide plate shall be rated at 80 C (176 F) or higher.

  • Page 17: Wiring The Instrument For Power

    Installation • To reduce static build-up, avoid excessive movement. Transport static- sensitive components in anti-static containers or packaging. • To discharge static electricity from your body and keep it discharged, wear a wrist strap connected by a wire to earth ground. •...

  • Page 18: Alarm Connections

    Installation Figure 12 Removing the Shielding Plate Amperometry 9180 Serial N°: RX/TX + RX/TX – Shield S3/Sys.Alarm S4/Timer Temp + Ind : D Model : 09125-A-2000 Temp – Serial No : 0104 549 Temp + Temp – Counter Vac : 100 - 240 V T 2A L Ref.
  • Page 19 Installation 6. Tighten the connectors using a small flat-head screwdriver. Firmly tug on Note: Primary components may become hot under high line voltage each wire to ensure solid connections. and ambient temperature conditions. ac wiring insulation must 7. Reinstall the shielding plate and front cover if all of the wiring is complete. be rated a minimum of 95 °C.
  • Page 20 Installation Figure 15 Analog and RS485 Terminal Strips Temp + Ind : D Model : 09125-A-2000 Temp – Serial No : 0104 549 Counter Vac : 100 - 240 V Work Wiring located behind the guide plate shall be rated at 80 C (176 F) or higher. 9180 V1.03 RS485 Circuit Card...

  • Page 21: Terminal Strip And Wiring Connections Descriptions

    Installation Figure 16 Sensor Terminal Strip Amperometry 9180 Serial N°: RX/TX + RX/TX – Shield S3/Sys.Alarm S4/Timer Temp + Ind : D Model : 09125-A-2000 Temp – Serial No : 0104 549 Temp + Temp – Counter Vac : 100 - 240 V T 2A L Ref.

  • Page 22: Using The Flow Meter

    Installation Figure 17 Terminal Strip And Circuit Board Descriptions Temp + Ind : D Model : 09125-A-2000 Temp – Serial No : 0104 549 Counter Vac : 100 - 240 V Work Wiring located behind the guide plate shall be rated at 80 C (176 F) or higher.

  • Page 23: Section 5 Programming The Instrument

    Section 5 Programming the Instrument 5.1 Programming Overview Figure 18 9186 Display and Keypad Cancels an operation or returns to the next level up. LEFT ARROW Validates a selection and passes on to the next step. RIGHT ARROW Takes the action as indicated above the key. The action changes depending on the display and menu.
  • Page 24 Programming the Instrument • Use the key to change additional digits as needed. Press RIGHT ARROW as many times as needed to accept the value. ENTER Table 2 Display 2 Menu Function Displays Values SENSOR AD590 MEASURE TEMP. COMP. Auto TYPE Manual Conc...
  • Page 25 Programming the Instrument Table 2 Display 2 Menu (continued) Function Displays Values — (Set value) BAUD: — (Set value) — PROGRAMMING RS485 PARITY — — EVEN STOP BIT: — (Set value) ElecAuto PROGRAMMING ZERO Chemical CONC. CALIB. EXECUTION CALIBRATION SLOPE EXECUTION TEMP.

  • Page 26: Setting The Alarms

    Programming the Instrument 5.2 Setting the Alarms Relays S1 and S2 may be assigned as threshold alarms. Relay S3 can be assigned as a threshold system alarm. Relay S4 can be assigned as a threshold alarm or relay timer. 1. From the Main screen, press the key.

  • Page 27: Temperature Compensation

    Programming the Instrument 5.2.3 Setting the Timer The S4 relay can be used for cyclical operation. The operating cycle is defined using Table 5 Figure Table 5 Alarm 4 (TImer) MODE No Limit Timer Choose between a threshold function (see Table 3) or a timer function.

  • Page 28: Automatic Temperature Compensation

    Programming the Instrument 5.3.1 Automatic Temperature Compensation The sensor continuously measures the sample temperature. Concentration values are automatically converted to a reference temperature of 25 °C. To set Automatic Temperature Compensation: 1. From the Main screen, press the key. RIGHT ARROW 2.

  • Page 29: Setting Up The Display

    Programming the Instrument Table 7 mA Outputs Programming Parameters Outputs 1/2 Used to determine whether the analog output is assigned to current, concentration, or AFFECT Conc. µA °C/°F temperature measurement. TYPE 0/20 or 4/20 Used to select the analog output range. MODE Lin or Bi-lin Choose a linear or bi-linear scale (see...

  • Page 30: Setting The Numeric Password (Code)

    Programming the Instrument Table 8 Display Programming Parameters ppb/ppm CONC Select the concentration µg/L–mg/L % Saf °C TEMP. Select the temperature unit. °F F (French) GB (English) LANGUAGE D (German) Select the language. SP (Spanish) I (Italian) 5.6 Setting the Numeric Password (Code) 1.

  • Page 31: Calculating The Average Concentration

    Programming the Instrument 3. Use the key to highlight RS485. Press LEFT ARROW ENTER 4. Program the parameters using Table Table 9 RS485 Outputs Programming Parameters Display Value Description N° 91XX Model number (0–32) BAUD 300, 600, 1200, 2400, 4800, 9600 Transmission speed in bauds No parity bit PARIT.

  • Page 32: Setting The Frequency Of The Power Source

    Programming the Instrument 5.12 Setting the Frequency of the Power Source 1. From the Main display, press the key. RIGHT ARROW 2. Use the key to highlight SERVICE. Press LEFT ARROW ENTER 3. Use the key to highlight CONFIGURATION. Press LEFT ARROW ENTER 4.

  • Page 33: Section 6 Calibrating The Sensors

    Section 6 Calibrating the Sensors 6.1 Calibrating the Temperature Sensor The free chlorine probe contains a temperature sensor. The sensor is factory pre-set but requires on-site calibration in the sample. 1. From the Main screen, press the key. RIGHT ARROW 2.
  • Page 34 Calibrate the slope by comparing it to a laboratory measurement and set the zero calibration with either a chemical zero, or with the electrical zero. For most users, Hach recommends using the Electrical Zero Calibration. An optional chemical zero cartridge is available. The recommended reference method for a chemical calibration is DR/2500 AccuVac™...
  • Page 35 5. Wait for a stable current, then press OK, then immediately take a sample for comparison analysis. 6. Adjust the value and units of the hydrazine concentration to the reference Note: Hach recommends using the DR2500/DR4000 hydrazine or value obtained by a standard method. To change a numeric value: carbohydrazide standard methods 8141 and 8140.

  • Page 36: Viewing Calibration History

    Calibrating the Sensors 6.4.4 Viewing Calibration History 1. From the Main display, push the key. RIGHT ARROW 2. Use the key to highlight CALIBRATION. Press LEFT ARROW ENTER 3. Use the key to highlight HISTORIC. Press LEFT ARROW ENTER Table 12 Viewing Calibration History Parameters DATE xx/xx/xx...

  • Page 37: Section 7 Maintenance

    A minimum pH of 10.2 should be maintained when measured at delivery systems that contain the drain. To verify pH for ≥ 10.2 use DIPA supplied by Hach (Cat. No. 28344-53). chemical reagents and standards. Monoethyamine, diethylamine and ammonia can also be used.

  • Page 38: Cleaning The Instrument

    Maintenance 8. Reconnect power to the instrument. 7.2.2 Cleaning the Instrument With the enclosure securely latched, use a soft cloth and a mild detergent to wipe the outside of the enclosure. Do not use solvents. Do not allow moisture to enter the enclosure.

  • Page 39: Section 8 Modbus Communication

    RS485 interface. This provides multi-drop, digital network capability that can be used to connect multiple 9186 series transmitters to a Programmable Logic Controller (PLC) or Personal Computer (PC). The 9186 is designed as a Modbus RTU slave, which allows a Modbus RTU master to access measurements, settings, and alarms.

  • Page 40: Read Input Registers-Function Code 03

    Modbus Communication 8.3.1 Read Input Registers—Function Code 03 This command reads the binary contents of a holding register in the 4xxxx address range. The query message specifies the starting register and quantity of registers to be read. Registers are addressed starting at zero. Table 13 is an example that requests the value from register 40001.

  • Page 41: Write Multiple Input Registers-Function Code 16 (10 Hex)

    Modbus Communication Table 16 Write Input Register Response Field Name Hex Value Slave address Function Starting address high byte Starting address low byte Data high byte Data low byte CRC high byte CRC low byte 8.4.1 Write Multiple Input Registers—Function Code 16 (10 Hex) This command writes the binary contents of multiple holding registers in the 4xxxx address range.
  • Page 42 8.4.3 Floating Point Support The original Modbus protocol specification did not support floating point numbers. These are implemented in the 9186 as IEEE 754 floating point numbers, and are stored in two back-to-back 16 bit registers. Table 19 is an example that requests the value from register 40001-40002.
  • Page 43 Modbus Communication 8.5 Register Information The fields shown in the register map are as follows: Register—Modbus register number. Note that each register is 16 bits in length. Floating point registers occupy two back-to-back 16-bit registers. Data Type—Representation of the data. Can be floating point, integer, bit or string.
  • Page 44 Modbus Communication Table 21 Register Map (continued) Register Data Type Length Units (U) Description 40033 Integer — Relay 2 characteristic 40034 Integer — Alarm 3 mode 40035 Integer — Alarm 3 type (enum) 40036 Float — Alarm 3 setpoint 40038 Integer —...

  • Page 45: Units Definition

    Modbus Communication 8.5.2 Units Definition Many of the registers in this section have associated units. The numbers associated with each unit are shown in Table Table 22 Units of Measure Value Units Description mg/L milligrams per liter grams per liter parts per million milli extinction Extinction...

  • Page 46: Network Connections

    Modbus Communication 8.6 Network Connections The 9186 uses RS485 digital communications. RS485 is multi-drop network, meaning multiple devices can be “daisy chained” on a single pair of wires. 8.6.1 RS485 Connections Table 23 lists the connections to the RS485 network.

  • Page 47: Section 9 Troubleshooting

    Section 9 Troubleshooting 9.1 Troubleshooting Error Messages When an error occurs, the measurement values are replaced by dashes, (- - -). Message Type Error Message Solution Measurement-related Error Messages CONCENTRATION TOO HIGH Check the current value, along with the calibration parameters. CONCENTRATION TOO LOW Check the current value, along with the calibration parameters.

  • Page 48: Detecting Electrical Faults

    Troubleshooting 9.2 Detecting Electrical Faults Problem Symptom Solution No display No power Check the power supply and the connection. Loose connections Faulty fuse Check the fuse. The power source has the wrong voltage Check the voltage level. The cable connecting the power board to the Check that the terminal strips are connected.

  • Page 49: Section 10 Parts And Accessories

    Section 10 Parts and Accessories Description Catalog Number 9186 Hydrazine Analyzer w/RS485 ....................19186=A=3011 918X Amperometric Measurement RS485 Board................09180=A=1501 Adjustable Flow Meter........................... 694=000=001 Cable, shielded, 2-wire, (per ft) ........................57012-00 Cleaning Bead (qty 1) .......................... 588801,75008 Complete Flow Controller Assembly ....................09186=A=0400 Conditioning Bottle ..........................09186=A=0200...

  • Page 50: Section 11 How To Order

    Brief description or model number • Quantity International Customers Hach maintains a worldwide network of dealers and distributors. To locate the representative nearest you, send e-mail to intl@hach.com or contact: Hach Company World Headquarters; Loveland, Colorado, U.S.A. Telephone: (970) 669-3050; Fax: (970) 669-2932 Technical and Customer Service (U.S.A.

  • Page 51: Section 12 Repair Service

    Section 12 Repair Service Authorization must be obtained from Hach Company before sending any items for repair. Please contact the Hach Service Center serving your location. In the United States: In Canada: Hach Sales & Service Canada Ltd. 1313 Border Street, Unit 34...

  • Page 52: Section 13 Warranty

    In the event that a defect is discovered during the warranty period, Hach Company agrees that, at its option, it will repair or replace the defective product or refund the purchase price, excluding original shipping and handling charges.

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