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320 Locust Street
Prophetstown, IL 61277
(815) 537-2311 Phone
(815) 537-5764 Fax
eMail: Click Here |
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Penberthy Series 12A Electronic Level Indication
 The Penberthy Series 12A five probe and above alarm system represents the latest advancement in electronic
level indication. Based on the conductivity probe technology now widely accepted in the industry, it was specially designed to
meet increasing demand for a reliable, cost effective means of sensing water in various applications. The probes can be mounted
directly to the pressure vessel or column. The probes are welded stainless steel HP and IP electrode with zirconia insulator
(3000 psig @ saturation, up to 1200°F [207 barg @ saturation, up to 649°C]) or threaded stainless steel LP electrode
with Teflon® insulator (850 psig @ 525°F [58 barg @ 274°C]). The Series 12A was developed for basic detection, display
and switching. The Series 12A consists of three major components: the column with probes, the detection and verification unit
and the remote display. The number of probes can be selected and space to indicate liquid level through a desired range. The
column is custom manufacture to provide the most accurate indication for any application. Independent detection circuitry for
each probe allows selecting relay output for alarms or trips. Local indication is standard within the Type 4X/IP65 D&V enclosure.
Bright red and green indicator for the control room is standard.
Teflon® is a registered trademark of E.I. du Pont de Nemours & Company
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Typical Applications
- Boiler Drum Level
- Equipment Drains (Desuperheaters, Control Valves, Sootblower Systems)
- Receiver Tanks (Condenser, Water Tank, Deaerator)
- Flash Tanks, Feedwater Heaters
Specifications
- Up to twelve level switch/indication applications per pcb, cascadable to accept unlimited add-on probes
- Provides basic detection, display and switching. No water over steam logic, no wire continuity and no redundant internal
power supply
- Independent detection circuit for each probe
- Failure of any channel or probe does not disable system
- Low voltage sine wave used for water detection (<17 Vac RMS nominal)
- Net integral zero current waveform. No DC = no possibility of electrolysis of water or plating
- Every level has a relay output for alarms and trips with remote or door display Red/Green LED indication
- D&V accepts up to four independently powered Red/Green LED remote displays
- Standard LED internal D&V display
- Enclosure: Type 4X/IP65
- Maximum sensitivity:
- 10 microsiemens/0.1 megohms - cm water
- Input Voltage:
- 120 Vac / 240 Vac nominal
- 50-60 Hz 30VA nominal
- Unit incorporates MOV protection
- Relay contacts:
- Form C, SPDT
- 10A @ 120 Vac
- 5A @ 240 Vac
- 8A @ 28 VDC
- Operating Temperature:
Standard Assembly
- Type 4X/IP65 Enclosure
- One Remote Red/Green LED Display
- Water Column with Probes
Optional
- 4-20mA loop output
- Door mounted Red/Green LED display for local viewing
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