Machine QA Patient QA Diagnostic Health Physics
SuperMAX™ Electrometer
The premier two-channel, reference-grade electrometer on the market.
SuperMAX™ Electrometer Overview
Two Independent Measurement Channels
- Independent control over range, bias voltage, and applied system factor.
- Both channels feature extensive range (0.001 pA to 500.0 nA, 0.001 pC to 999.9 µC) for use in a variety of applications, including ratio measurements.
Built-In Detector Library
- Eliminates the need for a PC or to apply system factor and temperature/pressure corrections.
- Store over 100 detectors and calibrations.
- Apply individual factors to one or both measurement channels.
Easy-to-Use Interface
- Large, color display with built-in touchscreen.
- On-screen keypad and pull down menus allows for easy access to settings and detector library.
Store Data Collection
- Measurements are stored from all data collection.
- Set automatic repeat measurements.
Exradin W1 Scintillator Integration
Two dedicated modes in the SuperMAX allow for seamless calculations using the Exradin W1 Scintillator.
Rate Mode Display Ranges
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LOW: 0.001 pA – 500.0 pA
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HIGH: 0.001 nA – 500.0 nA
Charge Mode Display Ranges
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LOW: 0.001 pC – 999.9 μC
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HIGH: 0.001 nC - 999.9 μC
Rated Effective Range on Input Currents Per IEC 60731 for Reference Grade
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0.400 pA – 500.0 nA (± .25% of minimum effective scale reading)
Measuring Range
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LOW: 0.400 pA - 500 pA, 0.400 pC - 999.9 μC
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HIGH: 0.400 nA - 500 nA, 0.400 nC - 999.9 μC
Bias Voltage
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Nominal ±1000 V
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0, (±) 100 - 1000 V in 1 V increments
Range Switching
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User selectable
Display Resolution
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LOW: Rate mode/Charge mode0.001 pA / 0.001 pC
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HIGH: Rate mode/Charge mode0.001 nA / 0.001 nC
Repeatability
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Low range: 0.25%
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High range: ± 0.1%
Long Term Stability
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± 0.5% over 1 year
Stabilization Time
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± 0.1% of value at 1 hour for measurements taken at 15 minutes and 6 hours
Non-linearity:
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± 0.25%
Zero Drift
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Rate mode: ± 0.25% of minimum effective scale reading (LOW/HIGH: < ± 0.001 pA / < ± 0.001 nA)
Zero Shift
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Rate mode: ± 0.25% of minimum effective scale reading (LOW/HIGH: < ± 0.001 pA / < ± 0.001 nA)
Charge Leakage Current
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LOW/HIGH: < ± 0.001 pA / < ± 0.001 nA
Response Time
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Low range rate: < 12 seconds, High range rate: < 2 seconds
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Low range charge: <2 seconds, High range charge: <0.3 seconds
Main Software Functions
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Channel 1 Measurement, Channel 2 Measurement, Channel 1 & 2 Measurement, Scintillator Measurement, Check Source Library, Chamber Library, Scintillator Baseline Library, Preferences
Charge Collection Modes
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Timed Mode - Selectable timer from 1 to 600 seconds in 1 second increments
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Continuous Mode (Manual Start/Stop) - Press Start to begin collection and Stop to end
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Trigger Mode – current exceeding pre-selected trigger values starts and stops collection
Countup/Countdown Resolution
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1 second (count up for Continuous Mode, count down for Timed Mode)
Trigger Levels for Charge
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CollectionStart value must be larger than stop value (set via Preferences interface)
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Start0.2 - 9.9 pA
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Stop0.1 - 9.8 pA
Operating Parameters
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Temperature15 to 35 °C
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Relative Humidity20 to 80% non-condensing
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Pressure650 to 770 mmHg
Storage Parameters
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Temperature-15 to 50 °C
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Relative Humidity10 to 95% non-condensing
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Pressure600 to 800 mmHg
Display
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Color LCD TFT touch screen. VGA (640x480) resolution, 6.4” diagonal
Input
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2 channels, BNC two lug triaxial connector (TNC option is available.)
Bias Voltage
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± VDC for the following: 0 to 1000 VDC in 1 VDC increments, 350 μA max
Zeroing
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Zero via button push - Display indicates zeroing in progress
Ports
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RS232 (Default: Uni-directional 19,200 baud, 8 data bits, no parity, 1 stop bit; Bi-directional operation via user commands, tech note available upon request) (2) USB ports (keyboard, thumb drive, or mouse support) Ethernet (internal use only, not currently supported)
Chamber library calibration coefficients
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Amp System factorsNsk:μGym²/(h*A)
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Nsk:Gym²/(h*A)
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Nx,sk:Rm²/(h*A)
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NA:GBq/A
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NA:Ci/A
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ND,W:mGy/(sec*A)
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NA:MBq/A
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NA:mCi/A
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Coulombs System FactorsNk:Gy/C
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Nx:R/C
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NGas:Gy/C
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ND:Gy/C
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ND,W:Gy/C
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Real-Time Clock
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On board, for data validation and storage
Audio
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On board speaker for audio feedback on start-up, button presses, operator alerts, etc.
Dimensions
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Width26.7 cm (10.5 in)
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Height8.1 cm (3.2 in)
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Length21.1 cm (8.3 in)
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Weight2.5 kg (5.45 lbs)
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Mode of OperationContinuous
Power Requirements
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100-240 VAC, 0.5 A max, 50/60 Hz input to external power supply, 9 VDC, 2.0 A power supply output to electrometer input, Globtek®, Inc. model GTM 96180-1811-2.0-T.
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The use of any other power supply and using alternates other than the UL/CSA recognized power cord can degrade minimum safety. The proper replacements from Standard Imaging, Inc. are required for compliance with the requirements of IEC 60601-1.
Product Standards
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IEC 60601-1:3rd Edition1, IEC 607312
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1 Externally Certified; 2 Designed to Meet
Shock Classifications
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Class I - External Power Supply
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Class II - Electrometer
Publications
Videos
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