Summary of Contents for Dielectric Technologies MGD-2002
- Page 1 IB-417 Rev A Part No. 84671 A Radiodetection Company Model MGD-2002 Dielectric Technologies RR #2 Box 756 Bridgton Commerce Center Bridgton, ME 04009 (877) 247-3797 • (207) 647-9495...
- Page 2 The MRA number must be on the outside of the package or indicated on the shipping label. Dielectric Technologies RR #2 Box 756 Bridgton Commerce Center Bridgton, ME 04009...
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Page 3: Table Of Contents
Table of Contents Preparation..............Page 1 Specifications............. Page 2 Warnings..............Page 3 Disclaimer..............Page 4 Operations a) Overview............ Page 5 b) Theory of Operation......... Page 5 c) Key-by-key..........Page 10 d) Liquid Crystal Display (LCD)......Page 12 e) LCD Status Icons......... Page 13 Maintenance a) Cleaning and Inspection...... -
Page 4: Preparation
PREPARATION UPON DELIVERY 1) Immediately inspect the MGD-2002 for any physical damage that may have been caused during shipping. NOTE: The Manufacturer’s warranty does not cover damage caused in transit. You must notify your carrier immediately for any damage claims. -
Page 5: Specifications
Specifications Dimensions: (LxWxD) 33.7cm x 12.3cm x 8.3cm (13.3in x 4.9in x 3.3in) Weight: (MGD-2002 only) 1400 grams ( 3.1 lbs) (Shipping) 6800 grams (15.0 lbs) Temperature Range : -10c to +45c (+14F to +113F) Humidity Range : 20% RH to 50% RH... -
Page 6: Warnings
User Safety Warnings IMPORTANT: It’s imperative that the user of this device observe all safety guidelines listed below to prevent personal injury, property damage or damage to this detector. • Do not operate the device if it has been damaged. Refer to qualified factory service personnel referenced in the front of the manual. -
Page 7: Disclaimer
Any concentration above this level, whether intentionally mixed or accidentally trapped in a confined space is highly explosive and unstable. Since the MGD-2002 is capable of detecting both Hydrogen (H ) and Helium (He) gas without any operator intervention, we recommend that if you do use Hydrogen ) gas, mix the remaining 96% with Helium (He) gas for 100% usability and added safety. -
Page 8: Operations
MODEL MGD-2002 MULTI-GAS DETECTOR OPERATIONS OVERVIEW The MGD-2002 Detector is a portable leak locating and pinpointing device that detects both Hydrogen (H ) and Helium (He) when used as a tracer gas in a multitude of pressurized systems. The characteristic of... - Page 9 Table #1 bonded with another of it’s own kind. If the elemental gas does not have a subscript, that gas has a full outer electron shell and will not react or bond with any other element. These few elements are known as “Nobel”...
- Page 10 It’s this distinction between the TC of CDA as compared to the TC of hydrogen or helium that we are interested in. Our MGD-2002 is designed with two ranges. The low range detects gas between 25 and 20,000 parts per milion (PPM) in increments of 25 ppm.
- Page 11 Another way to state this is when the humidity goes up, the accuracy goes down. Humidity and accuracy are inverses of each other. This doesn’t mean that the MGD-2002 cannot be used when the humidity goes above 20%. The wand section contains three independant filters, one removes water vapor, one removes chloroflourocarbons, and the last removes large particulates.
- Page 12 It’s for this reason we at Dielectric strongly suggest return- ing the MGD-2002 at a minimum of once a year to recalibrate. During factory recalibration, the silica gel filters are cleared, and the other two filters are replaced.
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Page 13: C) Key-By-Key
Key-By-Key Operation The MGD-2002 features high tech “membrane” switches, with a large multi-function liquid crystal display, and a patented filter system. Each key of the membrane switch features a raised embosed edge that is designed to be felt when wearing protective gloves. The switches themselves require 12 in-oz of pressure for the contacts to close, and will make a noticable “click”... - Page 14 PROBE The Probe button is only used in the manual mode, and tells the microprosessor how many physi- cal lengths of probe are attached to the unit. This is done to mathematically calculate how long it will take to get a sample from the boot to the sensing elements.
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Page 15: D) Liquid Crystal Display (Lcd)
Liquid Crystal Display (LCD) The LCD is a near real-time display of the tracer gas the unit has detected. The refresh rate is slightly greater than ten times every second. Figure #2 on the left shows the liquid crystal display upon pressing the On / Off button. -
Page 16: E) Lcd Status Icons
LCD STATUS ICONS There are five small icons shown at the bottom of the LCD screen. The icon as well as it’s function is displayed below listed in the order in which they are displayed on the LCD from left to right. NOTE: A function that has been turned off, will have an X through it’s icon ICON... -
Page 17: Maintenance
MAINTENANCE CLEANING & INSPECTION Instrument: Clean away any debris or moisture accumulation with a clean soft moist (NOT WET) cloth. Dirt or sand can scratch the lexan protective lense cover over the LCD, thus ensure the cloth used is clean and soft! Check exhaust ports on the top right side of the unit (small brass fitting) for any obstructions. -
Page 18: C) Clearing The Silica Gel Filter
With the spent filter cartridge removed, ensure there is no foreign material in the handle section. If the path is clear, replace a new (BLUE) silica gel filter. Replace the cap assembly using minimal force turning clock wise. CLEARING THE SILICA GEL FILTER To restore these cartridges to a dry deep blue useful condition (as shown on PAGE #9), back flush the hand held probe with Compressed Dry Air or Dry Nitrogen. -
Page 19: D) Battery Replacement
1/4 turn clockwise. BATTERY RECHARGING The MGD-2002 comes equipped with the jacks and adapters neces- sary to recharge your unit either back at the office or while working in the field. Refer to page #18 for a list of items that comes standard with this device. -
Page 20: F) Calibration
Calibration: The MGD-2002 is a precision measuring device that requires factory calibration in order to ensure continued and sustained optimum oper- ating performance. Periodicity between calibration cycles is dependant on the environment in which the device is to be used, the end user’s criteria for the equipment, and the amount of time the equipment is used throughout the year. -
Page 21: Parts List
PARTS LISTS A) STANDARD PACKAGE Upon initial receipt of the MGD-2002 multi-gas detector, the following components come included as standard items. Numbers in parenthasesis indicate the quantity included. 1) MGD-2002 Multi-gas Detector PN: 79766 2) Silica gel drying adapter PN: 84972... -
Page 22: B) Replaceable Parts
C) Accessories (Options) the following is a list of items that are recommnended for use with the MGD-2002 Multi-gas detector that do not come as a standard item. Items without part numbers are still in the design phase and have not yet been assigned. (N/A) -
Page 23: Warranty
THERE ARE NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, WHICH EXTEND BEYOND THE WARRANTY SET FORTH HEREIN. Dielectric Technologies Bridgton Commerce Center Bridgton, ME 04009 (877) 247-3797 • (207) 647-9495...
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