Summary of Contents for WB Johnson Instruments AM-801
- Page 1 PORTABLE PORTAL MONITOR OPERATIONS & MAINTENANCE MANUAL EFFECTIVE SERIAL #’s 221 - 268 WB Johnson Instruments, LLC 4083 E 600 N Rigby, ID 83442 Telephone: 208-557-6945 WEB: www.jradmeters.com Fax: 208-557-6946...
- Page 2 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual TABLE OF CONTENTS SECTION CONTENTS ------------------------------------- SPECIFICATIONS ------------------------------------- DESCRIPTION ------------------------------------- THEORY OF OPERATION ------------------------------------- ASSEMBLY & PACKING INSTRUCTIONS ------------------------------------- OPERATING INSTRUCTIONS ------------------------------------- SCREENS SHOTS W/DETAILED DESCRIPTION ------------------------------------- MAINTENANCE, ASSEMBLY & PACKING INSTRUCTIONS AM- 801-5-B &...
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Page 3: Specifications
VGA – 256 COLOR – TOUCH SENSITIVE SCREEN OPERATOR INPUT ALL OPERATOR INPUT IS THROUGH TOUCH SENSITIVE VGA SCREEN CONTROLS MODELS AM-801, AM-801-5-T, AM-801-5-B, and AM-801-6 OPERATING MODES WALK THROUGH , TIMED COUNT, AREA MONITOR and DRIVE THROUGH W/ OPTIONAL VH-1 Kit TIMED COUNT 1 –... - Page 4 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual MAIN COMPONENTS IN SHIPPING CONTAINER TOP LAYER BOTTOM LAYER BOTTOM LAYER EMPTY Page 4 W B Johnson July 30, 2018 ..
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Page 5: Theory Of Operation
DESCRIPTION The Model AM-801 is a ruggedized, portable monitor that can be utilized to screen large numbers of persons quickly for low levels of gamma and beta radiation. The AM-801 utilizes 4 large area plastic scintillators totaling 672 cubic inches to meet and exceed the measuring requirements of FEMA standard for portable portal monitors. - Page 6 AKNOWLEDGE ALARM button. The operator can access the screen that displays selections for the following: Model of AM-801, Alarm Set Points, Operating Modes, and Operating Times touching the SETUP button will cause the Setup Screen to appear (FIGURE 4). FIGURE 3 shows the portal in alarm.
- Page 7 GENERAL The model AM-801 is provided in a heavy duty plastic case that can be utilized to ship and store the instrument. The case contains a custom heavy duty dense foam insert with storage areas that protect each of the instruments major components during shipping and handling.
- Page 8 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual AM-801 MAIN COMPONENTS TOP UNIT/ CONNECTORS UNIT 2 FASTENERS UNIT 1 CONTROLLER BOTTOM SUPPORTS FIGURE A Page 8 W B Johnson July 30, 2018 ..
- Page 9 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual ASSEMBLY 4.2.1 Remove the side upright U1 in FIGURE A and unfold until the center ends meet as shown in Figure A. Engage the lever type fasteners (3 total) on each side and rear of the upright located near the center of the upright as shown in FIGURE A.
- Page 10 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual AM-801 SET UP PROCEDURE STEP 2 - “CAREFULLY” - Unfold and Lock both “SIDE” Pieces –Lay on Flat Surface and Connect to “TOP” Piece (2 STEP 1 – Remove Lid and Feet Connector “SIDE”...
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Page 11: Operating Instructions
The MAIN POWER SWITCH is located on the outside underneath of the CONTROL BOX HOUSING. The fuse used in the AM-801 is 1 amp SLO-BLO and is located inside the CONTROL BOX HOUSING. Access to the inside of the CONTROL BOX HOUSING is controlled by a key lock to prevent unauthorized access. - Page 12 AM-801-5-B (optional) – 5 scintillation detectors – 2 on each side and 1 in the Foot section AM-801-6 (optional) – 6 scintillation detectors – 2 on each side and 1 in both the Head and Foot sections SELECTION OF THE CORRECT MODEL IS MADE IN THE SETUP SCREEN BY SELECTING THE BUTTON WITH THE CORRECT MODEL NUMBER ON IT –...
- Page 13 FIGURE 8 The model AM-801 is now ready for operation. Persons MUST NOT enter the portal until the home screen 5.4.8 indicates system is “READY”. After a person passes through portal the instrument will indicate visually and by audible instructions if the person is not contaminated and when the next person can pass through the portal.
- Page 14 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual 5.4.9 A radiation reading that is higher than the alarm set point will cause the detector/detectors receiving the high radiation to turn red and the Alarm will sound and Alarm light will light. An audible command will instruct the person in the portal to stop and see the operator.
- Page 15 FIGURE 10 5.5.8 The model AM-801 is now ready for operation. Persons MUST NOT enter the portal until the home screen indicates system is “READY”. After person enters the portal they must remain stationary until the timed count is complete or the monitor will indicate INCOMPLETE COUNT and light the error light.
- Page 16 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual “DRIVE THROUGH” MODE (OPTIONAL VH-1 KIT - MUST USE AM-801-4 MODEL SELECTION) 5.6.1 Operating instructions for the “Drive Through” mode of operation are provided in the VH-1 Kit Operations Manual. INSTRUMENT OPERATION – “AREA MONITOR” MODE 5.7.1...
- Page 17 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual This screen is present when the system is first turned on and is present while the system is performing a check of its internal diagnostics prior to operation. During this screen the system is establishing background, checking high voltage, battery voltage and several internal checks for the internal circuitry.
- Page 18 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual HOME SCREEN - COUNT TO HIGH ALARM This screen appears when one or all of the monitor’s scintillation detectors measure a radiation field that exceeds the alarm set point. The high radiation field will cause the scintillator/scintillators to turn RED and the monitor will sound an alarm, turn on the red alarm light and issue a verbal instruction STOP SEE OPERATOR.
- Page 19 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual SETUP SCREEN ALL SCREENS DISPLAY COUNT RATES IN CPS (COUNTS PER SECOND) This screen will appear when the operator touches the SETUP button on the HOME SCREEN. The following functions are available on this screen:...
- Page 20 GENERAL The AM-801 is not designed to be serviced in the field due to the difficulty of servicing a weather resistant instrument and maintaining its weather resistant integrity. Johnson recommends this instrument only be serviced in areas with a controlled environment by personnel familiar with the weather resistant features of the instrument.
- Page 21 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual MAIN COMPONENTS IN CASE AND UNPACKING Top Unit Top of Case Side Unit 1 Side Unit 2 Top Layer of Foam Top of Case Removed Foam Still Buckled Top Layer of Foam Removed...
- Page 22 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual MAIN COMPNENTS READY FOR ASSEMBLY TOP UNIT CONTROLLER LATCHES UNIT 2 UNIT 1 BOTTOM UNIT Page 22 W B Johnson July 30, 2018 ..
- Page 23 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual ASSEMBLY 7.6.1 Remove the side upright U1 in FIGURE A and unfold until the center ends meet as shown in Figure A. Engage the lever type fasteners (3 total) on each side and rear of the upright located near the center of the upright as shown in FIGURE A.
- Page 24 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual AM-801-5-B SET UP PROCEDURE Connector → ← Connectors STEP 1 - “CAREFULLY” - Unfold and Lock both “SIDE” Pieces – Lay on Flat Surface and Connect to “TOP” Piece (3 Connector “SIDE”...
- Page 25 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual DETECTOR BOARD AND MAIN BOARD COMPONENT LAY OUT AND SCHEMATIC AM-801 DETECTOR BOARD COMPONENT LAYOUT Page 25 W B Johnson July 30, 2018 ..
- Page 26 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual AM-801 DETECTOR BOARD SCEMATIC Page 26 W B Johnson July 30, 2018 ..
- Page 27 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual AM-801 MAIN BOARD COMPONENT LAYOUT Page 27 W B Johnson July 30, 2018 ..
- Page 28 AM-801 Rev 1 Serial #221 - 268 Operation/Technical Manual AM-801 MAIN BOARD SCHEMATIC Page 28 W B Johnson July 30, 2018 ..