AMC VersaTox Instruction Manual
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AMC VersaTox Instruction Manual

Sensor/transmitter with optional display & relay output
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INSTRUCTION MANUAL
IMPORTANT:
Please read these installation and operating instructions completely
and carefully before starting.
Filename: 3156405A.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
VersaTox
Sensor/Transmitter with
Optional Display & Relay
Output
The Armstrong Monitoring Corporation
Copyright ©, October 2007, AMC

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Summary of Contents for AMC VersaTox

  • Page 1 Please read these installation and operating instructions completely and carefully before starting. Filename: 3156405A.doc Copyright ©, October 2007, AMC The Armstrong Monitoring Corporation 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...

  • Page 3: Table Of Contents

    4.1.3 DUCT MOUNTING (OPTIONAL) ................12 WIRING......................13 4.2.1 MONITOR AND POWER SUPPLY WIRING............13 4.2.1.1 DC Transmitter (1 board) to AMC Monitor .............13 4.2.1.2 DC Transmitter (1 board) to BAS ..............14 4.2.1.3 DC Transmitter with Relay to AMC Monitor (Optional)........15 4.2.1.4 DC Transmitter with Relay to BAS with own Power Supply (Optional) ..16...
  • Page 4 AMC-VersaTox Transmitter & Sensor...

  • Page 5: Warranty

    The Armstrong Monitoring Corporation will repair or replace components that prove to be defective in the opinion of AMC. Any equipment deemed to be defective by the user should be returned to The Armstrong Monitoring Corporation for evaluation (see product return below).

  • Page 6: Product Information

    AMC-VersaTox Transmitter & Sensor 2 PRODUCT INFORMATION 2.1 SENSOR/TRANSMITTER MODULE Sensor/transmitter unit order number. ………... Sensor/transmitter serial number...……………. Sensor order number...…………………….…… Sensor serial number…………………………… □ 2 Wire 12 to 24 VDC @ 20 mA Power Supply Requirement…………………….. □ 3 or 4 Wire 12 to 24 VDC/AC @ 90 mA Sensor Warranty…………………………………...

  • Page 7: Product Description

    3 PRODUCT DESCRIPTION The AMC-VersaTox sensor/transmitter unit is designed to provide continuous, reliable surveillance of surrounding air for the target gas listed in the Factory Settings (Section 2.2). This unit is powered by either AC or DC power source and provides a 4-20 mA, variable current signal, which is proportional to the gas concentration detected.
  • Page 8 6. GAS SENSOR SNS6 SNS2 SENSOR SIDE COMPONENT SIDE Figure 3-2 AMC-VersaTox Feature Transmitter Board RELAY, POWER BOARD (OPTIONAL): 13. POWER TERMINAL BLOCK: Connection point for wiring to the monitoring device and/or power source, AC or DC 14. SIGNAL TEST POINT: Measurement point for the output signal of transmitter board 15.
  • Page 9 ALARM ADJ. AC-IN 1 ALRM AC-IN 2 19. ALARM 20. ALARM RELAY RELAY SELECTOR Figure 3-3 AMC-VersaTox Feature Relay, Power Board DISPLAY (OPTIONAL): 21. LCD DISPLAY: Gas concentration 3 digit display 21. LCD DISPLAY Figure 3-4 AMC-VersaTox Feature Display Board...
  • Page 10 22. 120VAC PLUG IN ADAPTER: Plug in power supply with 120VAC primary and low voltage DC secondary 23. BUZZER: Piezo buzzer controlled by the alarm relay 24. JACK: Connects the plug in power supply to the AMC-VersaTox 23. BUZZER AMC VersaTox www.armstrongmonitoring.com 1-800-465-5777 3156501A 24.

  • Page 11: Installation

    4 INSTALLATION The installation of the AMC-VersaTox is very important as the operational quality is a direct result of the quality of the installation. The following sections provide guidelines for installation; location and mounting, wiring, and cable selection. 4.1 LOCATION AND MOUNTING...

  • Page 12: 120Vac Power Supply With Buzzer

    NOTE: The duct mount version is available for CO gas detection only. The duct mount option is used to divert a portion of the duct airflow through the AMC-VersaTox. The difference between the total pressure in the duct and outside the duct propels the sample stream.

  • Page 13: Wiring

    VersaTox sensor/transmitter to the monitor. In the 2-wire version, the same wire pair is used for both signal and power due to the low power current loop design of the AMC-VersaTox. For best signal transmission and maximum noise rejection, it is recommended to run the cable through steel conduit (the cable shield must be chassis grounded at the monitor or power supply).

  • Page 14: Dc Transmitter (1 Board) To Bas

    FIGURE 4-4 DC Transmitter (1 board) to AMC Monitor 4.2.1.2 DC Transmitter (1 board) to BAS The signal output of the AMC-VersaTox sensor/transmitter is a 4-20 mA DC current, therefore it can be connected to BAS (building automation system) equipped with an analog-to-digital converter if required.

  • Page 15: Dc Transmitter With Relay To Amc Monitor (Optional)

    The AMC-VersaTox with relay, power board option requires a 3 wire connection when interfacing to an AMC monitor. This additional board also has an optional relay, for relay wiring see section 4.2.2. The AMC-VersaTox with optional display and relay should be connected as shown in the following figure, by three twisted wires in a shielded cable.

  • Page 16: Dc Transmitter With Relay To Bas With Own Power Supply (Optional)

    BAS. This additional board also has an optional relay, for relay wiring see section 4.2.2 The AMC-VersaTox with optional display and relay should be connected as shown in the following figure, by three twisted wires in a shielded cable.

  • Page 17: Dc Transmitter With Relay To Power Supply Only (Optional)

    FIGURE 4-8 DC Transmitter with Relay to BAS without own Power Supply 4.2.1.6 DC Transmitter with relay to Power Supply only (Optional) The AMC-VersaTox with relay, power board option requires a 2 wire connection when interfacing to a DC power supply. This additional board also has an optional relay, for relay wiring see section 4.2.2.

  • Page 18: Ac Transmitter With Or Without Relay To Bas (Optional)

    4.2.1.7 AC Transmitter with or without Relay to BAS (Optional) The AMC-VersaTox can have a 4 wire connection to a BAS with the addition of the relay, power board. This additional board also has an optional relay, for relay wiring see section 4.2.2. The AMC-VersaTox with optional display and relay should be connected as shown in the following figure, by four twisted wires in a shielded cable.

  • Page 19: 120Vac Power Supply With Buzzer (Optional)

    FIGURE 4-11 AC Transmitter with or without Relay to Transformer 4.2.1.9 120VAC Power Supply with Buzzer (Optional) The AMC-VersaTox with optional display can have a 120VAC plug in power supply. With this power supply, the relay, power board is included and the relay is wired to control the buzzer.

  • Page 20: Relay Wiring (Optional)

    FIGURE 4-13 Optional BAS interface 4.2.2 RELAY WIRING (OPTIONAL) When the optional Relay, Power board is added to the AMC-VersaTox, an optional SPST relay with a 2A @ 30VDC resistive contact rating is included on the board. The following figure shows the general relay wiring scheme.

  • Page 21: Cable Selection

    A two conductor, shielded cable is recommended to transmit the 4-20mA signal from the AMC- VersaTox sensor/transmitter to the monitor. The same wire pair is used for both signal and power due to the low power current loop design of the AMC-VersaTox.

  • Page 22: And 4 Wire Dc Power Only (Optional)

    (Based & V = .5 V) 4.3.3 4 WIRE AC POWER ONLY (OPTIONAL) The AC transformer must be employed with every AMC-VersaTox for proper operation. The maximum wire length for 4-20mA is quite long and is not discussed in this manual.

  • Page 23: Operation And Calibration

    This is done so the relay is not switching on and off when the gas concentration is around the trip point. The version of the AMC-VersaTox with the 120VAC plug in power supply is equipped with a factory installed relay controlled buzzer.

  • Page 24: Calibration

    5.2 CALIBRATION This calibration procedure is suitable for all versions of the AMC-VersaTox. Every AMC-VersaTox sensor/transmitter is factory calibrated, so each unit should be ready for operation after installation and a 30 minute stabilization time. Subsequent calibration is required as a part of regular maintenance, and when replacing the sensor.
  • Page 25 10) Apply the Span gas sample, with a calibration adapter cup firmly and completely over the sensor opening on side of AMC-VersaTox for 2 minutes with a flow rate of 0.5 to 1 liters per minute. The span gas sample need not be the full scale concentration but could be a fraction of this.

  • Page 26: Alarm Relay Trip Point Setting

    INSERT PLUG INTO CAL JACK CAL JACK ADAPTER DIGITAL CLEAN CLOTH MULTIMETER (DC CURRENT MODE) GAS SENSOR ZERO & SPAN GASES CALIBRATION ADAPTER DIGITAL mA Com MULTIMETER SPAN TRIMMER (DC VOLTAGE MODE) ZERO TRIMMER REMOTE CALIBRATION LEAD COM TEST POINT ON THE TOP EDGE OF THE BOARD SIG TEST POINT...
  • Page 27 Alarm Relay Trip Point Selection Table Volts 100% Full Scale 75% Full 0.75 2.25 18.75 37.5 749.25 Scale 50% Full 12.5 499.5 Scale 25% Full 0.25 0.75 6.25 12.5 249.75 Scale 0% Full Scale Alarm Relay Trip Point Selection 50 PPM 10 PPM 400 PPM 25 PPM...
  • Page 28 GND TEST POINT ON THE TOP EDGE OF THE BOARD ALARM ADJUST TRIMMER DIGITAL MULTIMETER (DC VOLTAGE MODE) ALRM TEST POINT ON THE TOP EDGE OF THE BOARD Figure 5-3 Alarm Relay Trip Point Procedure...

  • Page 29: Maintenance

    6.2 SCHEDULED CALIBRATION Scheduled calibration is critical in maintaining proper function of gas sensor/transmitters. It is recommended that the AMC-VersaTox be calibrated a minimum of twice a year. As mentioned, Armstrong Monitoring offers a number of different maintenance plans to suit your requirements see section 5.2.

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