Feature
Comparison for all
Above Ground Markers
| Feature |
Mag-Only
no longer available |
DM3 with Extreme Temperature Kit |
DM3 |
| DETECTION | |||
|
Magnetic pig |
Yes | Yes | Yes |
| 22Hz (ELF) pig (continuous signal required) | No | Yes | Yes |
| Good for multiple runs | Yes | Yes | Yes |
| Automatic Magnetic and 22Hz (ELF) detection | No | Yes | Yes |
| Prioritize Magnetic or 22Hz (ELF) detection | No | Yes | Yes |
| Good for mixed 22Hz (ELF) and Magnetic runs | No | Yes | Yes |
| SENSOR | |||
| Internal | Yes | Yes | Yes |
| Optional external sensor | No | Yes | Yes |
| Automatic internal/external sensor detection | No | Yes | Yes |
| RECORDING STYLE | |||
| Triggered individual ELF or magnetic passes | Yes | Yes | Yes |
| Triggered Continuous ELF or Magnetic Recording up to 500 hours (depending on memory card size) | No | Yes | Yes |
| 22Hz (ELF) CHANNEL | |||
| Receiver frequency tunable range 10Hz to 30Hz | No | Yes | Yes |
| Tunable without a computer | No | No | No |
| Bandwidth adjustable for improved S/N | No | Yes | Yes |
| ELF receiver crystal controlled stability | No | Yes | Yes |
| Signal strength indicator | No | Yes | Yes |
| Can be used to locate a stuck pig with a computer. | No | Yes | Yes |
| MEMORY | |||
| Built in 16 mega-byte memory card | Yes | Yes | Yes |
| Records the entire analog data | Yes | Yes | Yes |
| Organize different pass files in project folders | Yes | Yes | Yes |
| Files are saved in Windows compatible format | Yes | Yes | Yes |
| Capacity to store thousands of passes | Yes | Yes | Yes |
| WIRELESS | |||
| All settings and data download to PC by wireless link | Yes | Yes | Yes |
| Connect to Cell Phone for remote tracking | Yes | Yes | Yes |
| Feature | Mag-Only |
DM3 with Extreme Temperature Kit |
DM3 |
| GPS | |||
| Automatic clock synchronization to GPS | Yes | Yes | Yes |
| Records GPS position in each pass file | Yes | Yes | Yes |
| Records other GPS data in pass file | Yes | Yes | Yes |
| Synchronize the PC clock to GPS | Yes | Yes | Yes |
| REAL TIME CLOCK | |||
| Can be set to use just the real time clock at locations where GPS is not available | Yes | Yes | Yes |
| COMPUTER INTERFACE | |||
| Requires Computer for tracking a pig | No | No | No |
| Requires Computer for setup | Preferred | Preferred | Preferred |
| Wireless connection | Yes | Yes | Yes |
| Fast setup cloning for each AGM | Yes *1 | Yes | Yes |
| SOFTWARE | |||
| AGM_PC_BT.exe setup program
included in purchase price. Setup program requires Windows XP® (SP2 or greater) or Vista® |
Yes | Yes | Yes |
| Cell phone (SmartPhone®) program (extra cost) | Yes | Yes | Yes |
| AGM_PC.exe Post Run pass selection and report generator included in purchase price | Yes | Yes | Yes |
| Feature | Mag-Only |
DM3 with Extreme Temperature Kit |
DM3 |
| STATUS INDICATOR | |||
| LCD Display with back-light | No | see note *2 | Yes |
| Three colored LED | Yes | Yes *2 | No |
| Audio indicator | No | Yes | Yes |
| A compatible cell phone can also be used as a status indicator: Optional Software required. | Yes | Yes* | Yes* |
| TAMPERPROOF On/Off SWITCH | |||
| Standard feature uses magnetic key (supplied) | Yes | No | No |
| Waterproof (IP65) Push Switch | Optional | Yes | Yes |
| BATTERIES | |||
| Alkaline cell size | AA** | D*** | D*** |
| Optional Lithium cell holder for cell size | AA | AA, D | AA, D |
| Optional other Battery boards for cell size | No | C, AA | C, AA |
| Expected Battery life in days. Assuming pre-placement mode in moderate climate. | 160 days | 150 days | 150 days |
| Feature | Mag-Only |
DM3 with Extreme Temperature Kit |
DM3 |
| OPERATING TEMPERATURE | |||
| Full range: -40ºF to 185ºF (-40ºC to +85ºC) | Yes | Yes | No |
| Limited range -8ºF to 158ºF ( -22ºC to +70ºC) | Yes | Yes | Yes |
| APPROVALS | |||
| FCC, CE, ICES-003 industry Canada | Yes | Yes | Yes |
| ATEX | No | No | No |
| ENCLOSURE | |||
| Polycarbonate or ABS (Polycarbonate standard) | Choice | Choice | Choice |
| Tough will tolerate rugged harsh environment | Yes | Yes | Yes |
| Waterproof (IP65 or better) | Yes | Yes | Yes |
* Coming soon: AGM with built in GSM wireless modem for automatic pig passage and status reporting by email or Text Message
** Mag-Only uses only four (4) AA cells and enjoys 160 days minimum continuous operation when pre-deployed in moderate temperature climate.
*** Uses only two (2) D-cell batteries and enjoys
150 days minimum continuous operation when pre-deployed in moderate
temperature climate. Longer battery life means you really can:
- Avoid time-consuming unit retrieval for battery replacement when
reruns or multiple runs are required.
- Place units at your convenience, in difficult terrain. You could even
use a cell phone connection and be notified when the pig(s) pass each
location.
- Reduce cost: It is not unusual to pre-deploy 50 AGM units on a job.
Let's assume because of multiple tool runs the job lasts 60
days: sizing pig, caliper pig, and Magnetic ILI tool,
etc. After the runs are complete and AGMs have been
retrieved, the cost of the D-cells is about $100 for the job, and you
can easily carry the 100 used D-cells (weight about 32 lbs) to the
recycle bin.
*1 New Version of MagOnly allows Settings to be cloned.
*2 Extreme
Temperature Kit allows the customer to remove the LCD Display behind the window,
replacing it with a plug-in LED Status Board with Three-Colored LED Status Indicators
that can operate at temperatures where an LCD Display would fail.
©Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hans Wedemeyer, Houston, Texas, U.S.A. All Rights Reserved.
DISCLAIMER
Every attempt has been made to ensure the
information contained herein is valid at the time of publication. Hans
Wedemeyer however, reserves the right to make changes, corrections
and/or improvements at any time and without notice. In addition, Hans
Wedemeyer disclaims any and all liability for damages incurred
directly or indirectly as a result of errors, omissions or
discrepancies.
Note! All trade marks are the property of the respective owners. Page updated Sept. 2009