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Bacharach ADM800 Instruction

Bacharach ammonia gas monitor system installation / operation / maintenance
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AGM300 / ADM800
Ammonia Gas Monitoring System
Instruction 3015-4275
Installation / Operation / Maintenance
Rev. 3 – May 2006
INSPECTION EQUIPMENT
MEASURING EQUIPMENT
61KN
Product Leadership • Training • Service • Reliability

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Summary of Contents for Bacharach ADM800

  • Page 1 AGM300 / ADM800 Ammonia Gas Monitoring System Instruction 3015-4275 Installation / Operation / Maintenance Rev. 3 – May 2006 INSPECTION EQUIPMENT MEASURING EQUIPMENT 61KN Product Leadership • Training • Service • Reliability...
  • Page 2 Product improvements and enhancements are continuous; therefore the specifications and information contained in this document may change without notice. Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

  • Page 3: Table Of Contents

    ...54 ORKING WITH YSTEM AULTS ORKING WITH THE ALIBRATION ORKING WITH THE IAGNOSTIC CREEN ...61 ERVICE APPENDIX ...63 AGM300 / ADM800 M AINTENANCE ...65 PTIONAL CCESSORIES ADM800 - L ...66 OGIC IAGRAM RS-485 C OMMUNICATION ROTOCOL AGM300 MODBUS RTU O...

  • Page 4: How To Use This Manual

    Introduction How to Use This Manual Thank you for investing in a BACHARACH Ammonia Gas Monitoring System. This manual provides important information on how to install, operate, and service the AGM300 Ammonia Gas Monitor and ADM800 Ammonia Display Module. Please Read this Manual Carefully Before Use If you have a working knowledge of gas monitors, you will find this manual useful as a reference tool.

  • Page 5: Explosive Atmosphere

    Do not continue to use this equipment if there are any symptoms of malfunction or failure. In the case of such occurrence, de-energize the power supply and contact a qualified repair technician or the nearest Bacharach Service Center. ONLY provided knockouts are to be used for electrical and communication wiring. Drilling into the box will void the warranty.

  • Page 6: Warning Statements

    Safety Precautions (Cont.) Installation Category Installation Category II, Pollution Degree II, as defined by UL. Altitude Limit 2,000 meters Cleaning USE a dry cloth to clean the outside of the case. DO NOT use soap and water. The use of the word WARNING in this manual denotes a potential hazard associated with the use of this equipment.

  • Page 7: General Description

    The instrument can be connected directly to a Building Management System or it may be operated as a stand-alone system using the ADM800 Ammonia Display Module. An RS-232C port is also provided for connection to a PC. This enables the AGM300 to be setup from a personal computer.
  • Page 8 Chiller The ADM800 should be mounted outside of the mechanical room or at least just inside of a door to the room. This is the “split architecture design” for safety of the operator. The ADM800 can be located up to 4500 feet from the AGM300.

  • Page 9: Agm300 Installation

    AGM300 Installation Upper Mounting Bracket Indicators Lower Mounting Bracket Water Trap STANDARD ACCESSORIES FOR A 4 POINT SYSTEM 5 Line-End Filters (P/N 3015-3420) AGM300/ADM800 Instruction Manual (P/N 3015-4275) Instruction 3015-4275...

  • Page 10: Agm300 - Installation Considerations

    Open the door latches and inspect the interior of the instrument for loose components that may have become dislodged during shipment. If damage is discovered, please contact the nearest Bacharach Service Center for assistance. Instruction 3015-4275...

  • Page 11: Screw Locations

    AGM300 - Mounting Instructions Screw Locations The AGM300 should be installed plumb and level and securely fastened to a rigid mounting surface. The enclosure utilizes keyhole mounting brackets designed for #12 pan head fasteners. Locate the four screws as shown in the diagram and leave the screw heads protruding approximately 3/16". AGM300 Mounting Specs Installation Hold the monitor flat against the mounting surface and allow it to slide down engaging the screw heads in the...

  • Page 12: Line

    AGM300 - Connecting Air Lines Overview Individual sample lines are run from the AGM300 to each area of the facility to be monitored. Additionally, a purge line is installed to provide clean air for resetting the infrared zero baseline. An exhaust line is installed to vent residual gas away from the monitor.

  • Page 13: Tubing Considerations

    Tubing Considerations Use ¼" outside diameter (0.040" wall) flex tubing is used for all air lines (P/N 304-2742). The tubing should be clean and free of residual moisture or other contaminants. The tubing should be cut cleanly with a sharp knife and care should be taken not to distort the tubing end.

  • Page 14: Agm300 - Interior Schematic

    AGM300 - Interior Schematic Primary Filter (P/N 3015-3071) Intake Manifold Solenoids Intake Manifold Solenoid Connectors Gas Sample Pump Primary Filter Intake Manifold Solenoids Intake Solenoid Connectors Power Supply Board Main Board Microcontroller Board Infrared Optical Bench Gas Sample Pump Power Supply Board 120 or 230 VAC Determined by...
  • Page 15 AC Power / RS-485 / Relay Connector / 4-20 mAdc Current Loop 4–20 mAdc Interface Board (Optional) Dual 4-20 mAdc Outputs (Signal Out Only) DO NOT APPLY POWER! RS-485 Connector Relay Connector Alarm 1, 2, 3, Fault Factory Terminator Default IN / OUT Instruction 3015-4275 Ground Stud...

  • Page 16: Electrical Connections

    AGM300 - Electrical Wiring It is highly recommended that the AGM300 be connected directly to the AC power source, preferably on its own circuit. The connection should be completed with a UL rated multi-conductor wire (14-18 AWG). Locate service knockouts on exterior of enclosure and install electrical conduit in the typical manner. The AGM300 is available in either a 120 or 230 VAC configuration.
  • Page 17 AGM300 AC Input Power and Ground Connections Instruction 3015-4275...

  • Page 18: Agm300 - Connecting Communication Devices

    Locate the RS-485 connector marked “TO MONITORS” in the ADM800 (Page 23). This connector is located on the far-left bottom of the ADM800 PC board. Make the wire run to the ADM800 and connect the twisted shielded pair to the RS-485 TO MONITORS connector using the same color code as used on the AGM300.
  • Page 19 (Refer to AGM300 PC Software Section) The AGM300 may be connected to a personal computer using the RS-232 interface on the left side of the enclosure. Software will be provided upon request or as a download from: http://www.bacharach-inc.com/downloads.htm. Instruction 3015-4275 Network Node Address...

  • Page 20: M Anagement

    Management System. Note that Building Management Systems set to a “0” or “1” address both respond to messages from the ADM800 as address “1” therefore you should not have a unit set to “0” and another set to “1” on the same network.

  • Page 21: Agm300 - Pc Software

    MULTIPLE AGM300’s CONNECTED TO A BUILDING MANAGEMENT SYSTEM RS-485 AGM300 AGM300 UNIT 1 UNIT 2 NODE 1 NODE 2 TERMINATOR TERMINATOR “OUT” “OUT” Programming the AGM300 Using PC Software NOTE 1: There are two versions of PC software. Use Version 1.0 with AGM300 units with v1.0 Unit Firmware, which were built June 2001 or before (as indicated by a serial number that starts with AF01 or lower).
  • Page 22 7. Using the arrow keys go to EDIT; press ENTER – the EDIT Menu DROPS DOWN; select SYSTEM and then press ENTER – the AGM LOCATION becomes highlighted. Press ENTER to move to the AGM TAG area; use the BACKSPACE key to remove the existing tag; then enter in a new tag. Press ENTER to return to LOCATION.
  • Page 23 USB Type Laptops Some of the newer laptops have USB ports and no RS-232 9-pin ports. You will be required to purchase a PCMCIA card that provides an RS-232 output. We recommend the PCMCIA card manufactured by: SEALEVEL SYSTEMS, INC. 155 TECHNOLOGY PLACE P.

  • Page 24: Nterfaces A

    AGM300 - Current Loop Interfaces Optional 4–20 mAdc Outputs Upon installation of the optional 4–20 mAdc Interface Board (Page 7) (P/N 3015-3133), the AGM300 has the capability of providing dual 4-20 mAdc scrolling current loop outputs for connection to external monitoring devices.

  • Page 25: Agm300 - Connecting External Alarms

    AGM300 - Connecting External Alarms Overview The AGM300 includes 4 Form C SPDT alarm contacts for the connection of external alarm devices. The relays are factory assigned to the following conditions: Relay #1 Leak Relay #2 Spill Relay #3 Evacuate Relay #4 Fault Connection...
  • Page 26 Typical AGM300 Relay 1 and Relay 2 Wiring LEAK SPILL EVACUATE FAULT Horn RS-485 Aux. Power Main AC Input Jumper the ‘Neutral’ of the auxiliary power connector to the ‘Common’ on the relay block. Connect one end of strobe or horn to the ‘NO’ of whichever level of alarm is appropriate for application. The other end of strobe or horn is connected to the ‘Line’...

  • Page 27: Adm800 Installation

    ADM800 Installation ADM800 Oblique Photo Upper & Lower Mounting Brackets Upper Mounting Bracket Lower Mounting Bracket Instruction 3015-4275...

  • Page 28: Adm800 - Installation Considerations

    ADM800 - Installation Considerations Overview Up to four AGM300 monitors may be connected to a single ADM800 display module. The ADM800 can be located anywhere up to 4500 feet from the furthest AGM300. The display module should be installed out of direct sunlight in a clean area that is not subject to temperature or humidity extremes.

  • Page 29: Adm800 - Mounting Instructions

    ADM800 - Mounting Instructions Screw Locations The ADM800 should be installed plumb and level and securely fastened to a rigid mounting surface. The enclosure utilizes keyhole mounting brackets designed for #12 pan head fasteners. Locate the four screws as shown in the diagram and leave the screw heads protruding approximately 3/16".

  • Page 30: Adm800 - Interior Schematic

    ADM800 - Interior Schematic Microcontroller Board CPU Reset Switch Main Board Ground Stud AC Power Microcontroller Board CPU Reset Switch Power Supply Board 120–230 VAC Input Main Board AC IN Connector T3 Front Panel Chassis Instruction 3015-4275...
  • Page 31 AC Power RS-485 Connectors Terminator Switches Relay Connector Fuses 1 Amp 250 VAC 3015-4011 Terminator Switches TO MONITORS TO HOST Relay AC IN Connector Connector T3 RS-485 to RS-485 to HGM300 Building Monitors Management System Instruction 3015-4275...

  • Page 32: Adm800 - Electrical Wiring

    Locate service knockouts on exterior of enclosure and install electrical conduit in the typical manner. The ADM800 is available in either a 120 or 230 VAC configuration. The unit’s AC voltage rating is marked on the outside of the enclosure. Do one of the following to connect the AC power leads and ground: •...
  • Page 33 ADM800 AC Input Power and Ground Connections Instruction 3015-4275...

  • Page 34: Adm800 - Communication Connections

    Locate the RS-485 connector marked “TO MONITORS” in the ADM800 (Page 23). This connector is located on the far-left bottom of the ADM800 circuit board. Connect one lead of a twisted shielded pair to the “B” connection point (the far left point), note the wire color. Connect the second wire to the “A”...

  • Page 35: Changing Terminator Switch Settings

    The terminator switch for the RS-485 “TO MONITORS” connector is shipped from the factory in the terminated or “IN” position. This is the correct setting if the ADM800 is connected to only one AGM300, or if it is the last device on a network chain.

  • Page 36: Adm800 - Connecting External Alarms

    Connection Use the AC conduit or any of the remaining service knockouts to gain access to the interior of the ADM800. Locate the relay connector (Page 23) and remove it from the circuit board. Secure the wire leads to the connector orienting them as shown in the diagram below.

  • Page 37: Adm800 Operation

    ADM800 Operation ADM800 Exterior Schematic Display Screen Navigation Buttons Cursor Pad LED Indicators Display Navigation Screen Buttons Cursor Indicators Instruction 3015-4275...

  • Page 38: Adm800 - Overview

    The ADM800 displays comprehensive information about the AGM300 network status and enables complete programming control of all system operations. The prominent features of the display module are discussed below. Display Screen The display screen is a back-lit LCD. Control Keys The 4 keys on each side of the display window are used to navigate between screen displays.

  • Page 39: Adm800 - Screen Displays

    ADM800 - Screen Displays When first powered up a splash screen appears indicating the serial number and firmware revision number. After a brief moment the System Screen is displayed. Please refer to the Appendix for a logic diagram of all the screen displays.

  • Page 40: Password Protection

    These are entered in the Zone Setup Screens. Password Protection The ADM800 can be password protected to prevent the unauthorized editing of setup parameters. When password protection is enabled, an operator may still navigate between screens to observe settings or monitor network status.

  • Page 41: Setting The Clock

    ADM800 - Setup Programming Setting the Clock From the top level System Screen press the key adjacent to the date/time field to go to the Clock Setup Screen. Use the LEFT/RIGHT cursor keys to move the cursor across the field to the value you wish to edit. Use the UP/DOWN cursor keys to modify the field value and press the ENTER key to accept your entries.
  • Page 42 3. Press ENTER to accept the new entry or QUIT to revert to the previous setting. NOTE: When first powered up, the ADM800 will automatically detect all AGM300s on the network with unique node addresses. Refer to the heading AGM Node Address Dip Switch Settings on Page 11.

  • Page 43: Audible Alarm

    3. Press ENTER to accept the new entry or QUIT to revert to the previous setting. Building Management System Stop Bits This value is the number of stop bits for the ADM800 on a Building Management System. 1. Press the BMS STOPBITS key to adjust the setting.
  • Page 44 Navigating to the 2 ADM Setup Screen From ADM Setup Screen #1 press the MORE key to go to ADM Setup Screen #2. Press the BACK key to return to ADM Setup Screen #1. Setting Relay Parameters This setting determines the function of relays 1 and 2 mounted inside the ADM unit. 1.

  • Page 45: Agm300 - Setup Programming

    AGM300 - Setup Programming Navigating to the 1 and then 2 From the System Screen, press the key adjacent to the target AGM300 to go to that unit's AGM Setup Screen #1. From AGM Setup Screen #1 press the SETUP key to go to AGM Setup Screen #2. Press the QUIT key to return to the System Screen.

  • Page 46: Detection Limit

    Location This is the name you assign to the AGM300 to identify its location. It may have up to 12 alphanumeric characters. 1. Press the LOCATION key to modify the setting. 2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys to modify the individual characters.

  • Page 47: Loop 2 Factor

    Loop 2 Factor This sets the PPM scale factor for current loop number 2. To calculate the current output, multiply the scale factor by the PPM and add 4. For example, at the default scale factor of 0.016, a measurement of 100 PPM would generate a current of 5.6 mA.

  • Page 48: Service Timeout

    Navigating to the 3 AGM Setup Screen From AGM Setup Screen #2, press the MORE key to go to AGM Setup Screen #3. Press the BACK key to return to AGM Setup Screen #2. Service Timeout Sets the length of time the Service Mode is in effect. Stops the monitor for up to 240 minutes (4 hrs) to allow for servicing the unit.

  • Page 49: Adm800 - Zone Setup Programming

    ADM800 - Zone Setup Programming Navigating to the 1 Zone Setup Screen There are two ways to display Zone Setup Screen #1: • From the System Screen (Page 31) press the key adjacent to the AGM300 unit associated with the zone you wish to work with.

  • Page 50: Log Interval

    Average Temperature This temperature reading may be changed to the exact temperature at the sample point for greater accuracy. The adjustment range is from –50 to +70 degrees C. 1. Press the AVG TEMP key to adjust the temperature value. 2.

  • Page 51: Spill Level

    Spill Level This is the concentration level in PPM that will activate a spill alarm condition. 1. Press the SPILL LEVEL key to adjust the value. 2. Use the UP/DOWN cursor keys to modify the setting. 3. Press ENTER to accept the new entry or QUIT to revert to the previous setting. NOTE: This value must be less than the evacuate level and greater than the leak level.

  • Page 52: General Operation

    The ADM800 operates by polling the network approximately once every 12 seconds to determine the current status of each AGM300 monitor. If more than one AGM300 is connected to the network, it will sequentially poll each monitor for its status.

  • Page 53: Alarm Conditions

    Zone Hold Mode A zone can be placed on hold and continuously monitored for a length of time determined by the Zone Hold Time value (Page 38). To place a zone on hold, press and hold down the key adjacent to that zone until you hear a beep.
  • Page 54 If the current Zone Screen appears normal, scroll through the displays using the NEXT/BACK keys or the UP/DOWN cursor keys until you locate the affected zone. You can further investigate the status of the affected zone by pressing the adjacent key and going to the Zone Setup #1 Screen (Page 41). You may also press the ALARM key to go directly to the Alarm Summary Screen (Page 50).

  • Page 55: Larms

    Working with the System Screen The System Screen provides a summary view of the entire AGM300 network. The boxes on the left side of the screen indicate the status of each AGM300 monitor including the name, the current zone, and whether fault or alarm conditions are present on the network.

  • Page 56: Alarm Log

    Alarm Log From the System Screen press the key adjacent to the AGM300 unit that you wish to view. AGM Setup #1 Screen Press the ALARM EVENT LOG key to display Alarm Log Screen. Alarm Log Screen Use the LEFT/RIGHT and UP/DOWN cursor keys to move through the log. The Alarm log shows the last 20 alarm events.

  • Page 57: Fault Conditions

    Fault Conditions If a system malfunction occurs, the yellow FAULT LED will glow. Additionally, an external alarm device may activate and an audible alarm may sound if those features have been enabled (Pages 28 & 35). The FAULT box on the right of the screen will blink and then counts the number of AGM units on the system with a fault.

  • Page 58: Responding To Alarms

    (Pages 17 & 38). The next time the ADM800 polls the affected monitor its red ALARM LED will glow. Additionally, an external alarm device may activate and an audible alarm may sound if those features have been enabled (Pages 28 &...

  • Page 59: Alarm Detail Screen

    Alarm Detail Screen To further investigate an alarm, press the adjacent key to go to the Alarm Detail Screen. The Alarm Detail Screen displays more comprehensive information about the nature of the alarm including: • Complete location information • Current PPM •...

  • Page 60: Acknowledging Alarms

    ADM800 returns to normal operation. Once that occurs, its red ALARM LED will turn off and any associated external alarms connected to the ADM800 relays will de-activate. Keep in mind that the system will continue to generate new alarms if PPM values above the alarm thresholds are detected.

  • Page 61: Working With The Trend Screen

    Working with the Trend Screen Overview - Log Interval The AGM300 retains a data log of 100 measurements for each zone. The log interval is the number of minutes from 1 to 1440 between each log point. This parameter can be changed from the Zone Setup #1 Screen (Page 41).

  • Page 62: Working With System Faults

    (Pages 17 & 38). The next time the ADM800 polls the affected monitor its yellow FAULT LED will also glow. Additionally, an external alarm device may activate and an audible alarm may sound if those features have been enabled (Pages 28 &...
  • Page 63 The AGM300 will clear the fault the next time it polls the effected zone and the ADM800 will return to normal operation the next time that it polls the AGM300.

  • Page 64: Clearing System Faults

    At that time the YELLOW LED will turn off and any external alarms connected to the monitor’s alarm relays will also turn off. The ADM800 will return to normal operation the next time it polls the affected AGM300 monitor.

  • Page 65: Working With The Calibration Screen

    Working with the Calibration Screen Overview The Calibration Screen is used to adjust the IR sensor’s calibration factor. IMPORTANT: Changing information on CAL FACTORS will VOID the factory calibration. Typically, the unit will remain within the factory-calibrated accuracy indefinitely and no calibration is required. Complex software algorithms adjust for temperature drift, IR source aging, and pressure changes in order to keep the unit within factory accuracy specifications.

  • Page 66: Calibration Procedure

    The new CAL factor is computed by dividing the known gas value by the measured value. Typically this value will be between 0.95 and 1.05. Enter the computed CAL factor into the monitor using the ADM800 (Page 57) or PC interface. This value is stored in non-volatile memory.

  • Page 67: Working With The Diagnostic Screen

    Working with the Diagnostic Screen Overview The Diagnostic Screen displays reference values for use by repair technicians for troubleshooting purposes. Navigating to the Diagnostic Screen Display the System Screen (Page 31); press the key adjacent to the target AGM300 unit to go to that monitor’s AGM Setup Screen #1 (Page 37);...
  • Page 68 LINE 7: PPM – Parts Per Million is the volume concentration referenced to standard temperature and pressure and is computed from lines 5, 8 and 13. There are two figures given. The first (annotated by a B) is the actual PPM at the IR bench. The second is a PPM reading normalized to standard temperature and pressure.

  • Page 69: Service Mode

    When activated, the Service Mode will disable a specific AGM300 unit for a specified length of time. The default is 60 minutes. This time interval can be changed per Section Service Timeout on Page 40. IMPORTANT: Note that while in the Service Mode no measurements are made, nor are any alarms activated. From the System Screen (Page 31), select the key adjacent to the AGM unit you wish to place into its Service Mode.
  • Page 70 Notes: Instruction 3015-4275...

  • Page 71: Appendix

    Appendix Instruction 3015-4275...

  • Page 72: Agm300 / Adm800 Maintenance

    AGM300 / ADM800 Maintenance Warnings and Cautions WARNING - Always remove AC input power to the monitor before working on the interior of the instrument. CAUTION - When working inside the instrument be very careful not to dislodge any electrical wiring or pneumatic tubing.

  • Page 73: Optional Accessories

    Optional Accessories Intake Manifolds Up to three additional intake manifolds (P/N 3015-3419 & P/N 3015-3411) can be installed in the AGM300 to increase the total capacity to 16 zones. Each manifold requires a sample line-end filter for each of the 4 zones. Please follow the instructions provided to install the manifolds.

  • Page 74: Adm800 - Logic Diagram

    ADM800 - Logic Diagram Instruction 3015-4275...

  • Page 75: Modbus Rtu Protocol

    Bacharach for technical assistance. MODBUS RTU Protocol The AGM300 monitor communicates with master devices (such as the ADM800 or a Building Management System) over the RS-485 serial interface. The monitor is configured with a two wire RS-485 serial bus, and therefore, data transmission occurs in ‘half-duplex’...

  • Page 76: Protocol Details

    AGM300 MODBUS RTU Operation Overview The AGM300 and ADM800 are equipped to communicate with other equipment using the MODBUS RTU protocol. Using this communication channel a MODBUS master device may communicate with up to 15 AGM300s on a communications network, exchanging measurement information, alarm data, fault data, history (logs and trends) and setup information.
  • Page 77 ADM800, it monitors each MODBUS message to determine if the message is intended for one of the AGM300s it is connected to. If it is, the ADM800 passes the message through to the AGM300s. If it is not, the message is not passed through.
  • Page 78 Summary of Registers Register Name Number Type System Data 0x0010h Status 0x0011h Zone Data 0x12xxh CAL Data 0x0014h Date/Time 0x0015h Sensor Data 0x0016h Rel. Hold 0x0017h Hold Zone 0x0018h Fault Log 0x19xxh Alarm Log 0x1Axxh Serv. Mode 0x001Bh Rel Serv. 0x001Ch 0x001Eh Zone Log...
  • Page 79 Defines PPM current loop output. (DEFAULT = 0.16mA/PPM) Service Mode Timeout value (in minutes). (DEFAULT = 60 MINUTES) BAUD RATE for RS-485 connection (between ADM800 and AGM300 or MODBUS master and AGM300 depending on the Network topology). Default=9 (19.2K); other values are 8=9600, 7=4800...
  • Page 80 Status Register Register 0x0011h Variable Type Length Mode 1 byte State 1 byte Measuring 1 byte Active_Zone 1 byte Max _Alarm 1 byte Alarm_Count 1 byte UNUSED 1 byte Loop_Card 1 byte Fault 2 bytes Fault Flag Structure uses bitwise access to 16 bit word as defined below: Bit 15 (MSB) Clipping Fault Bit 14 Zero Fault...
  • Page 81 Zone Data Register 0x12xxh R/W Each zone for an AGM300 has a separate Zone data structure that is 78 bytes long. The zone number is the low order byte in the register address (i.e., Zone 1 data register = 0x1201h) Variable Type Length...
  • Page 82 Notes on Alarms and Alarm Acknowledge The AGM300 can be operated in two different alarm acknowledge modes, Auto and Manual (set via the alarm_ack_mode variable in the system data register). For purposes of this discussion, the term “Alarm” refers to an AGM300 state where the alarm light is on and the appropriate alarm relay is activated. The term “Alarm condition”...
  • Page 83 It is strongly recommended that any New Gas curves that are added be done in conjunction with help from Bacharach, Inc. Date Time Register...
  • Page 84 Sensor Data Register Register 0x0016h Variable Type Length Pressure Float P_Volts Float Vacuum_P Float Ambient_P Float Box_T Float Box_T_Volts Float Bench_T Float Bench_T_Volts Float Bench_Z_T Float Box_Z_T Float PkPk_int PkPk Float Ave_PkPk Float Zero_PkPk Float Noise Float Float Ave_AU Float Bench_PPM Float STP_PPM...
  • Page 85 Release Zone Hold Register Variable Type Length Rel_Hold Hold Zone Register Variable Type Length Zone_Hold Notes Concerning the AGM300 Hold Mode The AGM300 can be made to hold or “dwell” on a particular zone if necessary. The length of the hold time is defined by the HOLD TIME parameter in the System Data Register.
  • Page 86 Fault Log Register These registers contain the 20 most recent fault events, the time they occurred, and a pointer to the most recent event. The data is split into 2 registers. The first register contains 200 bytes and the second register contains 102 bytes.
  • Page 87 Service Mode Register Register 0x001Bh Variable Type Length Rel_Svc_Mode Release Service Mode Register Variable Type Length Ent Svc_Mode Notes Concerning the AGM300 Service Mode The AGM300 can be placed into service mode if necessary. During service mode the unit will take no measurements, any and all alarms are silenced, and all relays are opened.

  • Page 88: Modbus Exception Responses

    The following MODBUS exception response are supported by the AGM300: Illegal Function Illegal Data Address Slave Device Busy (Occurs only when AGM300 is connected to the bus through an ADM800 and the ADM800 is not in the SYSTEM or ZONE VIEW screen) 32 bytes...

  • Page 89: Warranty And Service

    Service Pursuant to the stated warranty, Bacharach, Inc. warrants the products to be free of manufacturers defect for two (2) years from the date of shipment or installation and will replace any part free of charge during that period.

  • Page 90: Return Procedure

    Bacharach representative to travel to the site. Bacharach will bill expenses to the customer at actual cost. The customer will be invoiced for all applicable charges for parts, labor and expense at the Non-Warranty rates if it has been determined that the failure is a result of abuse of the equipment, improper installation, or failure to thoroughly read and comply with the instructions provided in the Operations and /or Service Manuals.

  • Page 91: Agm300 - Specifications

    Four SPDT alarm contacts are provided (Rated 5 amp 120 VAC) Three assigned to PPM level alarms - One assigned to system faults Communications: • Full two-way communication with ADM800 Ammonia Display Module or Building Management System via RS-485 serial interface. • RS-232C communication port standard •...

  • Page 92: Adm800 - Specifications

    ANS/BSR ASHRE 15-1994. Inputs: The ADM800 accepts inputs from up to four AGM300 monitors. It offers a wide variety of displays and can fully program any associated monitor. Display: Back lit LCD...
  • Page 93 Notes: Instruction 3015-4256...
  • Page 94 Headquarters: 621 Hunt Valley Circle, New Kensington, PA 15068 Ph: 724-334-5000 • Fax: 724-334-5001 • Toll Free: 1-800-736-4666 Website: www.bacharach-inc.com • E-mail: help@bacharach-inc.com Printed in U.S.A. ® Registered Trademark of Bacharach Inc.

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