MAX 4000 ELECTROMETER

Intuitive Interface

Easy to use, no complicated set up required

Large Comprehensive Display

The amp, coulomb, and collection time can be displayed simultaneously,
minimizing the need to switch screens.

Digital Filter

A digital filter built into the MAX 4000 eliminates the effect of noise.
This results in a very stable and exact measurement.

Easily Portable

Lightweight with a small footprint

Excellent Sensitivity

0.001pA to 195.00nA range
0.01pC to 999,999nC range

Easy to Use

The user interface is intuitive, simple and straightforward to use
so you can do your work quickly.
A few buttons control all operations.
User activated automatic zeroing: press a button and you are
ready to measure!
Large, easy to read LCD display: visible from a distance and
in low light.

Introduction

The MAX 4000 Electrometer is a superior instrument for accurate measurement of an extremely wide range of all brachytherapy sources, low dose rate, high dose rate, and cardiovascular. It is versatile enough to be used for all external beam and diagnostic x-ray applications.

Brachytherapy

Exceptional sensitivity and a wide dynamic range makes MAX 4000 the electrometer of choice for all brachytherapy measurements. It provides immediate measurements of even the lowest activity isotopes. For example, a 0.27mCi iodine seed, measured in the HDR 1000 Plus Well Chamber, gives a signal of 1.458pA. It can also measure 10Ci and higher iridium sources.

External Beam Radiation Therapy

The MAX 4000 works exceptionally well with all ion chambers typically used for data acquisition in water phantoms, and with all chambers used for quality assurance tests.

Specifications

MAX 4000 ELECTROMETER specifications

Four modes	Rate, Charge, Timing, and combined Rate and Charge
	Rate:
	Low Range: 0.001 pA - 950.00 pA, 1 fA resolution
	High Range: 0.001nA - 195.00 nA, 1 pA resolution
	Charge:
	Low Range: 0.01 pC - 999,999 nC, 10 fC resolution
	High Range: 0.01 nC - 999,999 nC, 10 pC resolution
	Timing:
	Selectable time periods for charge collection
	Range: 0-600 seconds
	Increments: 15 seconds
	Resolution: 1 second
	Other mode: "free running"
	Combined:
	The accumulated charge and the current readings are displayed simultaneously.
Range Switching
	User selectable: High or Low
Repeatability
	Short term, � 0.1% � 1 count
	Long term, � 0.2% (maximum change over two years)
	Signal setting time (typ)
	signal < 2 nA - 12 seconds
	signal > 2 nA - 3 seconds
Linearity
	� 0.06% typical for all rate and charge settings
Zero Drift
	< 1fA @STP

Display
	LCD, 2 x 20 with 3/16" high letters for easy viewing
Input
	BNC two plug, triaxial connector
Bias Voltage
	Nominal � 300 Volt bias
Five user settings:
	-300, -150, 0, 150, 300 (VDC)
Accuracy
	� 0.3 Volt
Power
	UL listed wall- mounted power supply, 110 or 220 VAC input
	9VDC@300 mA output Internal battery: 10 hrs/charge
Zeroing
	Automatic zero function, user activated
Output
	Isolated RS-232, Bi-directional, 19,200 baud rate, 8 data bits, no parity, 1 stop bit
Dimensions
	Height: 2.75 inches, 7 cm
	Length: 9 inches, 23 cm
	Width: 8.24 inches, 22.2 cm
	Weight: 3.0 lbs., 1.4 kg