 |
 |
PORTABLE DEPOSITION MONITOR PDM-1
The PDM-1 Portable Deposition Monitor is designed to effectively simulate the operating conditions of plant heat transfer equipment for evaluation of the effects of a chemical treatment program. The Portable Deposition Monitor provides direct observation of heat transfer surfaces. In conjunction with traditional monitoring tools, such as corrosion coupons and corrosion rate meters, the Portable Deposition Monitor performs a comprehensive diagnostic monitoring of cooling systems for chemical processing, industrial manufacturing, and electric power generation plants. Proper identification and treatment of heat transfer surfaces are essential to prevent decreased heat transfer and ultimately, system failure.
APPLICATIONS
The Portable Deposition Monitor may be used to evaluate the following:
 | Nature of Deposits |
| Effects of changes in pH limits, inhibitors, dispersants, microbiological control agents, cycles of concentration, and water velocities |
| Severity of process leaks and their operational effects |
| Merits of various materials of construction of replacement equipment |
DIAGNOSTIC CAPABILITIES
| Biological Attachment of macro organisms and/or microorganisms to a heat transfer surface with associated adherent slime. |
| Chemical Formulation of depositions at the heat transfer surface due to chemical reaction. The surface material is not regarded as a reactant. |
| Corrosion Accumulation of corrosion by-products on the heat transfer surface. |
| Particulate Accumulation of fine, distinct solids suspended in the cooling water; likely to become a deposit on the heat transfer surface due to gravity (sedimentation fouling). |
FEATURES and SPECIFICATIONS
| Direct digital display of temperature differential |
| Solid-state enclosed panel controls |
| Removable coupon holder and heater assemblies mounted within a plexiglass platform |
| Constant flow control valve rated at 6 GPM |
| Two, 1000 watt cartridge heaters rated at 7.5 amps at 115 VAC with temperature sensors |
| Variable heat flux (0 to 11.453 BTU/HR per square foot) |
| 3 degree F maximum temperature differential at 6 GPM |
| Accommodates 20-100 PSIG |
| Chromel-alumel thermocouples |