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Armstrong Monitoring Corporation 1AVC Instructions Manual

Gas monitor two channel monitor
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Installation and Operation of the
Gas Monitor 1AVC Two Channel Monitor
IMPORTANT:
Please read these installation and operating instructions completely
and carefully before starting.
Filename: 3216405A.doc
215 Colonnade Road South, Ottawa, Ontario, Canada K2E 7K3
Tel: (613) 225-9531 • Fax: (613) 225-6965 • Canada & U.S. Toll Free: 1-800-465-5777
E-mail: gas@armstrongmonitoring.com • Internet: www.armstrongmonitoring.com
Gas Monitor
1AVC
Two Channel Monitor
INSTRUCTIONS
The Armstrong Monitoring Corporation
Copyright © July 2009, AMC

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  • Page 1 Gas Monitor 1AVC Two Channel Monitor INSTRUCTIONS Installation and Operation of the Gas Monitor 1AVC Two Channel Monitor IMPORTANT: Please read these installation and operating instructions completely and carefully before starting. Filename: 3216405A.doc Copyright © July 2009, AMC The Armstrong Monitoring Corporation 215 Colonnade Road South, Ottawa, Ontario, Canada K2E 7K3 Tel: (613) 225-9531 •...

  • Page 3: Table Of Contents

    Gas Monitor 1AVC Two Channel Monitor TABLE OF CONTENTS Section Title Page WARRANTY..........................3 LIABILITY ........................3 PRODUCT RETURN ......................3 MODIFICATIONS AND SUBSTITUTIONS..............3 PRODUCT INFORMATION....................4 PRODUCT DESCRIPTION ....................5 GENERAL DESCRIPTION .....................5 3.1.1 MONITOR FEATURES ...................5 INSTALLATION ........................8 MOUNTING INSTRUCTIONS ..................8 WIRING ..........................9 4.2.1...
  • Page 4 Gas Monitor 1AVC Two Channel Monitor...

  • Page 5: Warranty

    Gas Monitor 1AVC Two Channel Monitor 1 WARRANTY The AMC-1AVC two-channel monitor is warranted against defects in material and workmanship for a period of two (2) years from date of shipment (except electrochemical sensor elements, catalytic elements and portable monitors – one (1) year – refer to individual spec sheets for additional exceptions).

  • Page 6: Product Information

    Gas Monitor 1AVC Two Channel Monitor 2 PRODUCT INFORMATION Monitor Part Number….…………………………………. AMC-1AVC Monitor Serial Number. ………………..………………... DSI Part Number…………………………………………. AMC-DSI-91AD-98AA-X DSI Serial Number. ………………..………………..DSI Warranty Period……………………………………... 2 year Sensor Warranty Period…………………………………. CO Channel 1 __________________ Channel 2 _________________ Power Supply Requirement.

  • Page 7: Product Description

    3 PRODUCT DESCRIPTION 3.1 GENERAL DESCRIPTION The Gas Monitor 1AVC is a two channel gas monitoring system incorporating state of the art sensing technology using micro-controller based design to provide continuous, reliable surveillance of surrounding air for traces of hazardous gases (listed in Section 2). The DSI (Dual Sensor Interface) permits two on-board sensor inputs and two 4-20 mA signals out.
  • Page 8 2, 8 - 4-20mA out 3, 9 - Power 4, 10 - 4-20mA in 5, 11 - Chassis ground 6, 12 - Signal ground 3. ALARM INDICATOR 2. WARNING INDICATOR 1. RUN/FAULT/OFF INDICATOR FIGURE 1: Gas Monitor 1AVC, Front Cover.
  • Page 9 Gas Monitor 1AVC Two Channel Monitor FIGURE 2: Internal Features of the Gas Monitor 1AVC.

  • Page 10: Installation

    Gas Monitor 1AVC. 4.1 MOUNTING INSTRUCTIONS Securely fasten the Gas Monitor 1AVC unit on a solid, non-vibrating surface or structure. Install the unit where it is not exposed to rain or water spray. Install in an area where the local concentration of gas is unaffected by the presence of ventilation systems and away from sources of interference gases.

  • Page 11: Wiring

    10Amps@250VAC resistive. For relay contact arrangement, see Figure 5. The Gas Monitor 1AVC is shipped with 2 relays factory configured to be de-energized in the non-alarm state. If the user prefers to have relays in a normally energized (failsafe) state see section 4.4 for jumper configuration.

  • Page 12: Gas Monitor Interface Configuration

    FIGURE 5: Relay Contact Arrangement for 2 or 3 Relays. 4.2.2 GAS MONITOR INTERFACE CONFIGURATION The AMC-1AVC is factory configured to the following setting. The input interface is configured by strapping the jumpers shown in Figure 6; note V+ equals 18-22 volts.

  • Page 13: On-Board Sensors Connection

    Gas Monitor 1AVC Two Channel Monitor NOTE: THE DSI BOARD IS REMOVED MD-V JB10 4-20mA SENSOR 1 MD-V 4-20mA SENSOR 2 EXAMPLE JB10 V+ = SS = +5V = MD-V = 4-20mA = FIGURE 6: Gas Monitor signal input configuration jumpers.

  • Page 14: Building Automation Wiring

    Gas Monitor 1AVC Two Channel Monitor 4.2.2.2 Building Automation Wiring On the DSI board, only the 4-20mA output portion of the signal input/output terminal block (see Figure 2, item 16), is available if there are on board sensors. This output can be connected to the building automation system.

  • Page 15: Dip Switch Programming

    Gas Monitor 1AVC Two Channel Monitor CHANNEL 1 CHANNEL 2 CHANNEL 1 CHANNEL 2 4-20mA 4-20mA 4-20mA 4-20mA CGND CGND SENSE RESISTOR SENSE RESISTOR + LOOP <= 500 Ohms EXAMPLE OF CHANNEL EXAMPLE OF CHANNEL 2 CONNECTION 1 CONNECTION FIGURE 8: Building Automation Wiring.
  • Page 16 Channel 1 Decreasing Channel 2 Increasing Reserved SW1-6 Number of Channel 1 and 2 are enabled. Sensors Only channel 1 enabled. AMC 1AVC only functions with this switch OFF. SW1-7 Two Zone Enabled One zone. Two zones. SW1-8 Enable One AMC 1AVC only functions with this switch ON.

  • Page 17: Alarm Relay Programming

    Gas Monitor 1AVC Two Channel Monitor Switch Feature Position Description SW2-1 Alarm Relay The Alarm relay is not activated when fault is detected. Activated When fault is detected, the Alarm relay is activated. when Fault is When only one group of relays is selected (see SW1-8),...

  • Page 18: Audio Alarms

    Gas Monitor 1AVC Two Channel Monitor Table 3: WARNING and ALARM Relay Active State Relay Jumper Normally Normally De-Energized Energized Warning JB11 Alarm JB12 4.5 AUDIO ALARMS An audio alarm output is provided, which produces various alarm sounds, as shown in the chart below.

  • Page 19: Operation And Calibration

    While a relay remains latched, the audio alarm remains active. 5.4 ALARM/WARNING RELAY ACTIVATION DELAYS The Gas Monitor 1AVC comes standard with 5 min activation time delays for the WARNING and ALARM relay contacts. The activation time delays can help prevent short cycling WARNING/ALARM in some applications.

  • Page 20: Calibration/Service

    Gas sensors need to be calibrated and periodically checked to ensure sensor accuracy and system integrity. The Gas Monitor 1AVC system comes factory calibrated and does not need to be adjusted as part of installation. Periodic calibration is required on the Gas Monitor 1AVC system; please contact the factory for recommended calibration intervals for your application.

  • Page 21: Equipment Required

    Gas Monitor 1AVC Two Channel Monitor NOTE: THE DSI BOARD IS REMOVED TP22 JB10 FIGURE 9: Gas Monitor 1AVC Test Points and Trimpots. 5.6.1.1 Equipment Required • Digital multimeter with a minimum display range of 0 to 10.0 VDC. •...

  • Page 22: Amc-Dsi Calibration

    - Only qualified personnel should perform the actual calibration. - Users new to gas calibration are advised to consult with Armstrong Monitoring The Armstrong Monitoring Corporation offers the following plans: 1. On site installation and calibration by Armstrong Monitoring 2. On site calibration by Armstrong Monitoring 3.
  • Page 23 The calibration procedure may cause false alarm and or fail signal. Appropriate precautions may be required. Refer to the Figure 10 below to perform the following calibration procedure: 1. Open the front cover on the Gas Monitor 1AVC enclosure. 2. Attach the multi-meter as shown in Figure 10. •...

  • Page 24: Recalibration

    Gas Monitor 1AVC Two Channel Monitor DIGITAL MULTIMETER BLACK (-) LEAD MAIN BOARD SENSOR 1 SENSOR 2 RED (+) LEAD Sensor 1 TP22 DSI BOARD ZERO SPAN Sensor 2 4-20mA 4-20mA 4-20mA 4-20mA CGND CGND FIGURE 10: AMC-DSI Test Points and Trimpots.

  • Page 25: Preventive Maintenance

    Gas Monitor 1AVC Two Channel Monitor 6 PREVENTIVE MAINTENANCE This section covers all aspects of the Gas Monitor 1AVC. First, a description of general maintenance is given followed by a verification of operation and sensor replacements. 6.1 GENERAL The monitor unit should be brushed or wiped clean, once a year or more, of any dust or dirt that settles on it, depending on the accumulation.

  • Page 26: Installation Tips And Tricks

    Gas Monitor 1AVC Two Channel Monitor 7 INSTALLATION TIPS AND TRICKS CABLING • Cabling – use 2 conductor cable with 2 wire transmitter and 3 conductor cable with everything else. Generally, 18 gauge conductors are used (not true in all cases).

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