1. Manuals
  2. Brands
  3. ACM Manuals
  4. Monitor
  5. 1A1 Series
  6. Instructions manual

ACM 1A1 Series Instructions Manual

One-channel gas monitor
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Installation and Operation of the
Gas Monitor 1A1 One-Channel Monitor
IMPORTANT:
Please read these installation and operating instructions completely
and carefully before starting.
Filename: 3132405A02.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
1A1 Series
One-Channel Gas Monitor
INSTRUCTIONS
The Armstrong Monitoring Corporation
Copyright © July 2006, AMC

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 1A1 Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for ACM 1A1 Series

Summary of Contents for ACM 1A1 Series

  • Page 1 Gas Monitor 1A1 Series One-Channel Gas Monitor INSTRUCTIONS Installation and Operation of the Gas Monitor 1A1 One-Channel Monitor IMPORTANT: Please read these installation and operating instructions completely and carefully before starting. Filename: 3132405A02.doc Copyright © July 2006, 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 1A1 Series One-Channel Monitor TABLE OF CONTENTS Section Title Page WARRANTY.........................iii LIABILITY ........................iii MODIFICATIONS AND SUBSTITUTIONS..............iii PRODUCT RETURN ..................... iii PRODUCT INFORMATION....................iv PRODUCT DESCRIPTION ....................1 GENERAL DESCRIPTION .....................1 3.1.1 MONITOR FEATURES ...................1 INSTALLATION ........................4 MOUNTING INSTRUCTIONS ..................4 4.1.1...
  • Page 4 Gas Monitor 1A1 Series One-Channel Monitor 5.6.3.2 Adjustments ....................26 5.6.4 AMC122X FAMILY OF MULTIDROP MODULES ..........29 PREVENTIVE MAINTENANCE ..................31 GENERAL ........................31 VERIFICATION OF OPERATION ................31 SENSOR REPLACEMENT ..................31 INSTALLATION TIPS AND TRICKS ..................32...

  • Page 5: Warranty

    Gas Monitor 1A1 Series One-Channel Monitor 1 WARRANTY The Gas Monitor 1A1 Series One-Channel Monitor is warranted against defects in material and workmanship for a period of two (2) years from date of shipment. During the warranty period, The Armstrong Monitoring Corporation will repair or replace components that prove to be defective in the opinion of AMC.

  • Page 6: Product Information

    Gas Monitor 1A1 Series One-Channel Monitor 2 PRODUCT INFORMATION Monitor Serial Number. ………………..……………….. Monitor Warranty Period. ………………………..… 2 year Power Supply Requirement. ………………….……..… 120 VAC, 60 Hz, 30 VA Operating Temperature.…….………………….……..… -20°C to +40°C (-4°F to +104°F) Operating Pressure..…………….…………….……..… Ambient atmospheric pressure Relative Humidity..…………….…………….……..…...

  • Page 7: Product Description

    3 PRODUCT DESCRIPTION 3.1 GENERAL DESCRIPTION The Gas Monitor 1A1 series monitor is a one 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 monitor comes with the following features, see Figures 1 and 2.
  • Page 8 Gas Monitor 1A1 Series One-Channel Monitor 11. PROGRAMMING DIP Allows user to configure the alarm delay and timer SWITCHES: circuits, audio alarm activation, sensor mode selection, fault threshold, and acknowledge switch function 12. RELAYS: 2 alarm and 1 optional Fault DPDT relays are provided 13.
  • Page 9 Gas Monitor 1A1 Series One-Channel Monitor 11. PROGRAMMING 8. RELAY SETUP DIP SWITCHES JUMPERS 13. (OPTIONAL) ON-BOARD SENSOR 9. TEST SWITCH 10. TRIP POINT ADJUSTMENT 7. AUDIO ALARM INDICATOR 5. TRANSFORMER (UNDER PCB) 6. INTERNAL WIRING HEADER 14. SENSOR WIRING TERMINAL BLOCK 12.

  • Page 10: Installation

    4.1 MOUNTING INSTRUCTIONS 4.1.1 MONITOR MOUNTING Securely fasten the Gas Monitor 1A1 series monitor 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: Transmitter, Multidrop Or Remote Sensor Mounting

    Fault relay. The contacts are rated for 10Amps@250VAC resistive. For relay contact arrangement, see Figure 5. The Gas Monitor 1A1 series monitor is shipped 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 1A1 Series One-Channel Monitor AC PRIMARY 120 VAC, 60 Hz NEUT. FIGURE 4: Location of Power Supply Connections. FIGURE 5: Relay Contact Arrangement.

  • Page 13: Cable Selection

    Gas Monitor 1A1 Series One-Channel Monitor 4.2.2 CABLE SELECTION Connections from monitor to transmitter, multidrop or remote sensor should be made using shielded, 2 or 3-conductor cable (depending on type of remote sensor or transmitter used). For best signal transmission and maximum noise rejection, run cable through steel conduit (cable shield must be grounded at the monitor except for AMC-3705).

  • Page 14: On-Board Sensor Connection

    Gas Monitor 1A1 Series One-Channel Monitor SS = MD-V = 4-20mA = MD-V JB10 JB10 4-20mA SENSOR 1 V+ = +5V = FIGURE 6: Signal input configuration jumpers. Signal inputs are categorized into two main groups; On-board sensor wiring and Transmitter, multidrop or remote sensor wiring.

  • Page 15: Amc-S2E Sensor

    Gas Monitor 1A1 Series One-Channel Monitor SOLID STATE SENSOR SENSOR SOCKET FIGURE 7: Solid state sensor connection. 4.2.3.1.2 AMC-S2e Sensor The AMC-S2e sensor is designed to plug into the same socket as the solid state sensor. Plug the sensor into the socket and ensure the green LED on the AMC-S2e illuminates. If the green LED does not illuminate, unplug and rotate AMC-S2e 180º.

  • Page 16: Transmitter, Multidrop Or Remote Sensor Wiring

    Gas Monitor 1A1 Series One-Channel Monitor 4.2.3.2 Transmitter, Multidrop or Remote Sensor Wiring Each transmitter, multidrop or remote sensor connects to a set of sensor terminals (-, S1, +) on the sensor wiring terminal block located on the circuit card, see Figure 2, item 14. The sensor wiring terminal block is located in the bottom right corner of the PCB and is capable of wiring inputs as shown in Figure 9.

  • Page 17: Transmitter, 2 Wire

    Gas Monitor 1A1 Series One-Channel Monitor 4.2.3.2.1 Transmitter, 2 Wire The 2 wire transmitter is wired to the Gas Monitor through the signal input terminal block. The wiring is conveyed in the following table. Gas Monitor Transmitter, 2 wire No connect at chassis ground →...

  • Page 18: Transmitter, 3 Wire

    Gas Monitor 1A1 Series One-Channel Monitor 4.2.3.2.2 Transmitter, 3 Wire The 3 wire transmitter is wired to the Gas Monitor through the signal input terminal block. The wiring is conveyed in the following table. Gas Monitor Transmitter, 3 wire No connect at chassis ground →...

  • Page 19: Amc-122X Multidrop

    Gas Monitor 1A1 Series One-Channel Monitor 4.2.3.2.3 AMC-122X Multidrop The 122X multidrop is wired to the Gas Monitor through the signal input terminal block. The wiring is conveyed in the following table. Gas Monitor 122X Multidrop No connect at chassis ground →...

  • Page 20: Amc-3700 Remote Sensor

    Gas Monitor 1A1 Series One-Channel Monitor 4.2.3.2.4 AMC-3700 Remote Sensor The 3700 remote sensor is wired to the Gas Monitor through the signal input terminal block. The wiring is conveyed in the following table. Gas Monitor 3700 Remote Sensor No connect at chassis ground →...

  • Page 21: Amc-3705 Remote Sensor

    Gas Monitor 1A1 Series One-Channel Monitor 4.2.3.2.5 AMC-3705 Remote Sensor The 3705 remote sensor is wired to the Gas Monitor through the signal input terminal block. The wiring is conveyed in the following table. Gas Monitor 3705 Remote Sensor chassis ground →...

  • Page 22: Dip Switch Programming

    Gas Monitor 1A1 Series One-Channel Monitor 4.3 DIP SWITCH PROGRAMMING The circuit card has two blocks of DlP-switches for configuring the various functions; see Figure 2, item 11. Each DIP-switch can be set to OFF (left position) or ON (right position) depending on functions required.

  • Page 23: Alarm Relay Programming

    Gas Monitor 1A1 Series One-Channel Monitor Switch Feature Position Description SW2-5 Activation No activation delay of Warning conditions. Delay, Five minute delay on activation of Warning conditions Warning following sensor exceeding alarm threshold. SW2-6 Activation No activation delay of Alarm conditions.

  • Page 24: Audio Alarms

    Gas Monitor 1A1 Series One-Channel Monitor 4.5 AUDIO ALARMS An audio alarm output is provided, which produces various alarm sounds, as shown in the chart below. The audio alarm can be disabled by turning OFF the DIP-switch SW2-7. Table 5: Audio alarm operation...

  • Page 25: Operation And Calibration

    5.4 ALARM/WARNING RELAY ACTIVATION DELAYS The Gas Monitor 1A1 series monitor 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. The delays can be enabled by turning ON switches SW2-5 and SW2-6, for WARNING/ALARM respectively.

  • Page 26: Calibration/Service

    For AMC-3700, AMC-3705 and on-board sensors, calibration is done at the monitor. The Gas Monitor 1A1 series system comes factory calibrated and does not need to be adjusted as part of installation. Periodic calibration is required on the Gas Monitor 1A1 series system;...

  • Page 27: 2-Wire And 3-Wire Transmitters

    Gas Monitor 1A1 Series One-Channel Monitor SP-2 JB10 FIGURE 15: Gas Monitor 1A1 Test Points and Trimpots. 5.6.1 2-WIRE AND 3-WIRE TRANSMITTERS This section discusses the adjustment of the WARNING and ALARM thresholds on the Gas Monitor when connected to a 2 or 3-wire transmitter.

  • Page 28: Trip Threshold Adjustment

    Gas Monitor 1A1 Series One-Channel Monitor 5.6.1.2 Trip Threshold Adjustment Ensure that the interface is configured for 4-20 mA transmitters. The formula below is used to determine the voltage the thresholds are adjusted to with the trimpots. = ((C ) + I...

  • Page 29: Equipment Required

    Gas Monitor 1A1 Series One-Channel Monitor The AMC-S2e may be installed on the PCB in the SP-2 location or externally in either a AMC- 3700 or AMC-3705. See sections 4.2.3.1.2 AMC-S2e Sensor; 4.2.3.2.4 AMC-3700 Remote Sensor and 4.2.3.2.5 AMC-3705 Remote Sensor for connecting the AMC-S2e to the Gas Monitor.

  • Page 30: Recalibration

    Gas Monitor 1A1 Series One-Channel Monitor • : 100 PPM (AMC-S2e is calibrated to this value at the factory) full scale • = (( 50 PPM / 100 PPM) * (1.320V – 0.380V)) + 0.380V alarm = 0.850V RV6 would be adjusted so that 0.850V is measured at TP6.
  • Page 31 Gas Monitor 1A1 Series One-Channel Monitor Table 7: Equivalent Concentration of Pure Gas Volume in 2L Plastic Mixing Chamber Volume of Pure Gas * Volume of Pure CO Equivalent of Concentration 0.1 cc 0.4 cc 50 ppm 0.2 cc 0.8 cc 100 ppm 0.4 cc...

  • Page 32: Adjustments

    Gas Monitor 1A1 Series One-Channel Monitor 5.6.3.2 Adjustments To observe immediate reaction during calibration, the low and high alarm time delays should be disabled. All calibration is made using the trimmers along the right side edge of the circuit board as shown in Figure 15.
  • Page 33 Gas Monitor 1A1 Series One-Channel Monitor Figure 17: Taking gas sample...
  • Page 34 Gas Monitor 1A1 Series One-Channel Monitor Figure 18: Injecting gas sample for calibration...

  • Page 35: Amc122X Family Of Multidrop Modules

    Gas Monitor 1A1 Series One-Channel Monitor DIGITAL MULTIMETER CONNECT BLACK MEASURE VOLTAGE ( - ) LEAD TO GND. AT SIG. TEST PT. WITH RED (+) LEAD SP-2 JB10 Figure 19: Trimmer adjustment and test point locations 5.6.4 AMC122X FAMILY OF MULTIDROP MODULES This section discusses the principle of the WARNING and ALARM thresholds on the Gas Monitor when connected to a multidrop voltage module (i.e.
  • Page 36 Gas Monitor 1A1 Series One-Channel Monitor Since alarms are processed at the multidrop module, the monitor is factory set to simply recognize their sittings; therefore, no user adjustments reside in the monitor. Calibration is preformed at the multidrop module as specified in the module specific manual.

  • Page 37: Preventive Maintenance

    Gas Monitor 1A1 Series One-Channel Monitor 6 PREVENTIVE MAINTENANCE This section covers all aspects of the Gas Monitor 1A1 series monitor. 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 38: Installation Tips And Tricks

    Gas Monitor 1A1 Series One-Channel Monitor 7 INSTALLATION TIPS AND TRICKS CABLING • Cabling – use 2 conductor with 2 wire transmitter and 3 conductor with everything else, generally 18 gauge but not true in all cases, shielded wire to connect all gas sensors.

Table of Contents