ENMET Corporation PO Box 979 Ann Arbor, MI 48106-0979 www.enmet.
Table of Contents 1.0 Introduction ..............................................................................................................................................................1 1.1 Unpack .................................................................................................................................................................1 1.2 Check Order ...............................................................................................................................
AM-5175 ENMET Corporation 1.0 Introduction The AM-5175 is an ambient air monitoring instrument that measures and detects gases utilizing electrochemical sensor. The AM-5175 is NOT in an enclosure rated for use in a Class I, Div 1, Groups B, C, D classified area and can not be installed in a hazardous location.
AM-5175 ENMET Corporation 2.0 Components of the AM-5175 2.1 AM-5175 elements See Figure 1 for location of elements: Feature Description A polycarbonate box, approximately 7 x 5 x 3, with a detachable front cover. Enclosure 4 holes for mounting the enclosure to a vertical surface. Located at the corners of the bottom of the enclosure, directly beneath the 4 front cover retaining screws. See Figure 3 Detachable front cover of AM-5175 with Display Panel. See Section 2.
AM-5175 ENMET Corporation 2.3 Circuit Board Features The Display Panel is attached by a cable and is released by unscrewing the 4 screws located in the corners. After releasing the panel, it is swung upward, exposing the interior of the enclosure. The Circuit Board is mounted at the back surface of the enclosure interior. Features are shown in Figure 2.
AM-5175 ENMET Corporation 3.0 Installation of the AM-5175 The AM-5175 is supplied with a strain relief and a standard U.S. 3 prong power line cord. NOTE: This control panel is NOT rated for hazardous locations. The control panel must be located in a NON-Hazardous area. 3.1 Mounting AM-5175 Mount the AM-5175 instrument on an appropriate vertical surface, leaving room for lid to be opened, using the mounting holes provided. Avoid areas with excessive vibration or temperature extremes.
AM-5175 ENMET Corporation 3.1.1 Wiring the AM-5175 The electrical installation should conform to appropriate electrical codes, such as the National Electrical Code in the United States. WARNING: The compliance of the installation to appropriate codes is not ENMET’s responsibility. The AM-5175 should be powered through circuit breakers provided for this purpose. 3.1.2 Power Supply The input power can vary from 100 to 240 VAC, 50/60 Hz.
AM-5175 ENMET Corporation 3.3 Relay Contacts Relay contacts are available for each alarm; these are SPDT, rated at 10Amp at 110VAC, and may be latching or non-latching as required by the application. They are accessed on the terminals next to each relay see Figure 5. The contact positions are noted on the circuit board next to each terminal. The following table is for the relays in their un-energized state. This is also the alarm condition state.
AM-5175 ENMET Corporation 4.0 Operation When the AM-5175 is installed as described in Section 3, and in clean air, the POWER green LED is on, the display is lit and the information on the display is measurement of the target detected by the AM-5175. The red alarm and fault LEDs are not lit. 4.1 Start Up AM-5175 When the AM-5175 is first powered up, it goes through a series of momentary screens, which identify the instrument model number, serial number and software revision.
AM-5175 ENMET Corporation 4.2 Normal Display Mode When the AM-5175 is installed as described in section 3, and in clean air, the POWER green LED is on, the display is lit and the information on the display in measurement units of ppm detected by the AM-5175. The red alarm and fault LEDs are not lit. To advance through displays of operational information press the MENU button. NOTE: Software revision may cause variations of display output.
AM-5175 ENMET Corporation 5.0 Maintenance The AM-5175 maintenance menus are accessed by pressing the MENU button and SELECT button as described in the maintenance menu section. 5.1 Maintenance Menus CAUTION: Do Not Attempt A Span Procedure Without Calibration Gas Applied to The Sensor; if this is done, the instrument is forced into a calibration fault mode. Pushbutton switches control the MENU and SELECT functions. The MENU and SELECT button locations are indicated on the display panel, see Figure 1.
AM-5175 ENMET Corporation NOTE: Software revision may cause variations of display output. 5ppm Normal Gas Display Menu Press and Hold the Menu button for 2 – 4 seconds to enter the Maintenance Menus Select Exit Menu Press the Select button to return to the Normal Gas Display. See Section 5.2.
AM-5175 ENMET Corporation 5.2 Calibration of the AM-5175 Calibration is the process of setting the instrument up to read accurately when exposed to the target gas. The Zero function sets the clean air reference point and the Span function sets the sensitivity of the instrument. Initial Calibration: Wait at least 3 – 4 hours after initially supplying power to the AM-5175 instrument before initial calibration, overnight is preferred.
AM-5175 ENMET Corporation 5.2.1 Exit Maintenance Menu Exit maintenance, by pressing the Exit appears on the display. Press the SELECT button to return to the instrument Normal Gas Display. Example of Exit menu: Select Press the Select button to return to the Normal Gas Display. Exit Menu Press the Menu button to cycle through Maintenance Menus 5.2.2 Zero Adjust Not Present for Oxygen Instruments The ZERO function must be performed by exposing the AM-5175 instrument to clean fresh air.
AM-5175 ENMET Corporation 5.2.3 Gas Span It is recommended that the Zero Function be performed first. Do not perform a calibration unless span gas is applied to sensor. Calibration can be aborted by pressing and holding the MENU button for 3 – 4 seconds. Enter the maintenance menu. See Figure 6, AM-5175 Maintenance Menu flow chart. 1. Press the MENU button until Span display. 2. Press the SELECT button to perform a Span procedure.
AM-5175 ENMET Corporation 5.2.4 Alarm Set Points The AM-5175 has three alarm set points set at the factory. These alarm points are normally set at established safety levels. Alarm set points can be changed within limits. To change any of the three alarm points: Enter the maintenance menu as shown in Figure 6 AM-5175 Maintenance Menu flow chart. 1. Press the MENU button until to display Alarm1 is displayed. 2. Press the SELECT button to initiate alarm set point change 3.
AM-5175 ENMET Corporation 5.3 Sensor Replacement WARNING: Power must be removed from the AM-5175 before this or any internal procedure. Failure to do so may cause damage to equipment, bodily injury or death. Sensors should be replaced when they can no longer be calibrated. Replacement sensor part numbers are listed in Section 6.0 of this manual.
AM-5175 ENMET Corporation 6.0 Accessory and Replacement Parts ENMET accessory part numbers: Part number Description 03620-022 04834-004 03219-100 03296-209 04834-001 03314-020 Calibration Cup Calibration Regulator Assembly for Steel Cylinder Gas Cylinder, 100 ppm CO in air, (34 Liter, Steel Cylinders) Gas Cylinder, Zero Gas, 20.
AM-5175 ENMET Corporation 8.0 WARRANTY ENMET warrants new instruments to be free from defects in workmanship and material under normal use for a period of one year from date of shipment from ENMET. The warranty covers both parts and labor excluding instrument calibration and expendable parts such as calibration gas, filters, batteries, etc... Equipment believed to be defective should be returned to ENMET within the warranty period (transportation prepaid) for inspection.
PO Box 979 680 Fairfield Court Ann Arbor, Michigan 48106-0979 734.761.1270 Fax 734.761.3220 Returning an Instrument for Repair ENMET instruments may be returned to the factory or any one of our Field Service Centers for regular repair service or calibration. The ENMET Repair Department and Field Service Centers also perform warranty service work.
Repair Return Form Mailing Address: ENMET Corporation PO Box 979 Ann Arbor, Michigan 48106 Phone Number: FAX Number: Shipping Address: ENMET Corporation Attn: Repair Department 680 Fairfield Court Ann Arbor, Michigan 48108 734.761.1270 734.761.
