Machine QA Patient QA Diagnostic Health Physics
MAX 4000 Plus Electrometer
MAX 4000 Plus Electrometer Overview
Powerful Measurement Capabilities
- Updated timed charge collections for various increments.
- Three collection modes: triggered with automatic start/ stop, timed from 0-600 seconds, and continuous.
Compatible with Standard Imaging Software
Use included MAX COMM Software or DV1D Software to:
- Automatic acquisition of a series of timed charge collections.
- Perform basic beam profiling with continuous collection of rate measurement points over user defined intervals.
- Export data in a Microsoft® Excel compatible format.
- With MAX COMM Software, facilitate calculation of integrated dose and dose rate in Gy, Sv, R, Gy/min, Sv/hr, R/min, or Gym2/hr
External Beam, Stereotactic QA and More
- Quick measurements of small volume ion chambers, such as those used in IMRT or SBRT.
- Ideal for ion chambers typically used for data acquisition in water phantoms.
- Great for mammographic, conventional radiology, and CT scanning applications, as well as health physics measurements.
Simple, Intuitive Interface
- Simplified LCD display produces easy-to-read data.
- Faster warm-up time from start up to acquisition.
- Simultaneous display of amp, coulomb, and collection time minimizes the need to switch screens.
- User activated, automatic zeroing function.
Superior Bias Settings
- Compatible with large volume ionization chambers.
- Additional bias levels for accurate determination of chamber correction factors.
- Extended ± 0-450 VDC for TG-51 and 1/3 ratio IAEA TRS-398 measurements.
Reference Class Confidence
Designed to meet or exceed AAPM, ADCL, IEC 60731 reference grade instrument specification requirements.
LDR or HDR Brachytherapy
- Exceptional sensitivity with quick measurements of low activity isotopes.
- 0.27 mCi iodine seed, measured in the HDR 1000 Plus Well Chamber, gives a typical signal of 1.458 pA.
- Measures 10 Ci and higher iridium sources.
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REF Number90020
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Height7.9 cm (3.1 in)
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Width22.6 cm (8.9 in)
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Length24.8 cm (9.8 in)
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Weight1.7 kg (3.80 lbs)
Display Range
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RATE:Low Range 0.001 pA – 1000.00 pA, 1 fA resolution
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High Range 0.001 nA – 500.00 nA, 1 pA resolution
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CHARGE:Low Range 0.01 pC – 999,999 nC, 10 fC resolution
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High Range 0.01 nC – 999,999 nC, 10 pC resolution
Charge Collections
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TRIGGER:Automatic start, stop, and reset based on user defined thresholds (Start: 0.02 – 9.9 pA; Stop: 0.01 – 9.8 pA)
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TIMED:User set duration options will increase 1-10 (1sec increments) 15-120 (15sec increments); 120-600 (60sec increments)
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CONTINUOUS:Unlimited duration with manual stop
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Range SwitchingUser selectable
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Repeatability± 0.1% (IEC 60731 requirement: ± 0.5%)
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Long-Term Stability0.5% (over one year)
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Stabilization Time± 0.5% (IEC 60731 requirement: ± 0.5% of value at 1 hr for measurements taken at 15 min and 6 hrs)
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Response TimeHigh Range Rate: 3 s
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Low Range Rate: 15 s All Ranges Charge: < 0.5 s
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Non-Linearity± 0.2% (IEC 60731 requirement: ± 1.0%)
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ConformityCE 93/42/EEC
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Reference class according to IEC 60731
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Zero DriftHigh Range: < ± 0.1%
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Low Range: < ± 0.25% IEC 60731 requirement: ± 0.5%
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Zero ShiftHigh Range: < ± 0.1%
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Low Range: < ± 0.25% IEC 60731 requirement: ± 0.5%
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DisplayBacklit LCD, 2 x 20 with 5/16" characters
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InputBNC two lug, triaxial connector
Bias Voltage
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Nominally ±450 volt bias
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-450 to -100, 0, 100 to 450 (Ranges in 50 Volt Increments)
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ACCURACY:± 0.3 volt
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ZeroingAutomatic zero function, user activated
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OutputIsolated RS-232; bidirectional 19,200 baud rate; 8 data bits; no parity; 1 stop bit; compatible with Argus QC4 software
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Power100-240 VAC, 0.5 A max, 50/60 Hz input to external power supply, 9 VDC, 1.7 A power supply output to electrometer input, UL/TUL listed power supply; internal, user replaceable battery: 8 hrs per charge
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Product StandardsCE 93/42/EEC
