Model 4906A

Alpha Hand & Foot Monitor

Part Number: 48-3687

Features

• Alpha Air Proportional Probes
• Large LCD User Interface
• Automatic Routines for Detector Setup and Alarm Calculations
• Voice Prompts
• Built-in Ethernet Interface
• Single-Hand Operational Mode
• Front Access to All Components for Repair/Calibration

The Model 4906A is an industrial-duty, low-cost, alpha-only contamination monitoring system for the hands and shoes of personnel. System status and areas of possible contamination are presented in a large color LCD making the process simple and user-friendly.

Counting is initiated by optical switches that activate six air-proportional-type detectors. Alarms annunciate locally and can be augmented with optional relays that will signal remote devices or a high-visibility alert light mounted on top of the unit. The built-in Ethernet interface supports connection to a network for gathering all count cycles along with permitting remote monitoring of the status of the instrument.

All maintenance can be performed from the front of the instrument. Hinged top covers make accessing detectors for repair or replacement convenient. Rear-mounted wheels allow the instrument to be transported from one location to another with relative ease.

• Specifications
• Options
• Documents

• Specifications
• Options
• Documents

Specifications

Hand Detector	4 alpha air proportional detectors (2 for each hand)
	Size	13 x 23.2 cm (5.1 x 9.1 in.)
	Open Screen	79%
	Active Area	301 cm2 (46.8 in2)
	Open Area	238 cm2 (36.9 in2)
	Efficiency	239Pu	12%
	Background	1 to 10 cpm
Foot Detector	2 alpha air proportional detectors (1 for each foot)
	Size	15.6 x 33.3 cm (6.1 x 13.1 in.)
	Open Screen	58%
	Active Area	518 cm2 (80.4 in2)
	Open Area	301 cm2 (46.6 in2 )
	Efficiency	239Pu	10%
	Background	1 to 15 cpm
Detector MDA	Less than 500 dpm per detector at 95% confidence within 10 seconds with a 0.1% false alarm chance
Display	30.7 cm (12.1 in.) diagonal, TFT LCD SVGA
Electronics	Fanless motherboard running Embedded Windows™ 7 Pro
Count Time	Adjustable from 1 to 99 seconds
Controls	LCD touchscreen facilitates all control functions with the exception of: power on/off button one hand operation button alarm acknowledgment button
Construction	Welded aluminum, with powder coat finish, stainless steel base, and two offset wheels for portability
Temperature Range	0 to 40 °C (32 to 104 °F)
Humidity	0 to 95% relative humidity
Power Supply	Input	90 to 264 Vac at 47 to 63 Hz (requirement for wall outlet power)
	Output	12 Vdc, 7 A Max, 84 W (M4906A input power coming from Power Supply)
Size (H x W x L)	121 x 79.8 x 90.2 cm (47.6 x 31.4 x 35.5 in.) step-up only 3.8 cm (1.5 in.) high
Weight	72.6 kg (160 lb)

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Options

Option	Description	Part Number
Ludlum Universal Software	Collects and displays radiation levels and alarm status from multiple Ludlum instruments, including area monitors, sample monitors, and portal monitors. The instrument must be equipped with Ethernet interface. Using this interface, the area instrument can be connected to the network allowing for real-time monitoring of radiation data, email alerts, and database logging. A standard web browser is used to view the current status and query the data.	1370-093
Alpha-Beta-Gamma Frisker	Adds a Model 44-9 detector for hand-frisking personnel.	4420-420
Signal Light Tower	Adds a status light to the instrument.	4420-335

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Documents

• Data Sheet
• Product Manual (Operator)
• Product Manual (Technical)
• CE Certificate
• Ludlum Hand & Foot Monitor Comparison Table

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