Machine QA Patient QA Diagnostic Health Physics

SuperMAX^™ Electrometer

Name: SuperMAX™ Electrometer
SKU: 90018
Availability: InStock

The premier two-channel, reference-grade electrometer on the market.

SuperMAX™ Electrometer part of complete solution for: Stereotactic Absolute Dosimetry CyberKnife

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

LOW: 0.001 pA – 500.0 pA
HIGH: 0.001 nA – 500.0 nA

Charge Mode Display Ranges

LOW: 0.001 pC – 999.9 μC
HIGH: 0.001 nC - 999.9 μC

Rated Effective Range on Input Currents Per IEC 60731 for Reference Grade

0.400 pA – 500.0 nA (± .25% of minimum effective scale reading)

Measuring Range

LOW: 0.400 pA - 500 pA, 0.400 pC - 999.9 μC
HIGH: 0.400 nA - 500 nA, 0.400 nC - 999.9 μC

Bias Voltage

Nominal ±1000 V
0, (±) 100 - 1000 V in 1 V increments

Range Switching

User selectable

Display Resolution

LOW: Rate mode/Charge mode

0.001 pA / 0.001 pC
HIGH: Rate mode/Charge mode

0.001 nA / 0.001 nC

Repeatability

Low range: 0.25%
High range: ± 0.1%

Long Term Stability

± 0.5% over 1 year

Stabilization Time

± 0.1% of value at 1 hour for measurements taken at 15 minutes and 6 hours

Non-linearity:

± 0.25%

Zero Drift

Rate mode: ± 0.25% of minimum effective scale reading (LOW/HIGH: < ± 0.001 pA / < ± 0.001 nA)

Zero Shift

Rate mode: ± 0.25% of minimum effective scale reading (LOW/HIGH: < ± 0.001 pA / < ± 0.001 nA)

Charge Leakage Current

LOW/HIGH: < ± 0.001 pA / < ± 0.001 nA

Response Time

Low range rate: < 12 seconds, High range rate: < 2 seconds
Low range charge: <2 seconds, High range charge: <0.3 seconds

Main Software Functions

Channel 1 Measurement, Channel 2 Measurement, Channel 1 & 2 Measurement, Scintillator Measurement, Check Source Library, Chamber Library, Scintillator Baseline Library, Preferences

Charge Collection Modes

Timed Mode - Selectable timer from 1 to 600 seconds in 1 second increments
Continuous Mode (Manual Start/Stop) - Press Start to begin collection and Stop to end
Trigger Mode – current exceeding pre-selected trigger values starts and stops collection

Countup/Countdown Resolution

1 second (count up for Continuous Mode, count down for Timed Mode)

Trigger Levels for Charge

Collection

Start value must be larger than stop value (set via Preferences interface)
Start

0.2 - 9.9 pA
Stop

0.1 - 9.8 pA

Operating Parameters

Temperature

15 to 35 °C
Relative Humidity

20 to 80% non-condensing
Pressure

650 to 770 mmHg

Storage Parameters

Temperature

-15 to 50 °C
Relative Humidity

10 to 95% non-condensing
Pressure

600 to 800 mmHg

Display

Color LCD TFT touch screen. VGA (640x480) resolution, 6.4” diagonal

Input

2 channels, BNC two lug triaxial connector (TNC option is available.)

Bias Voltage

± VDC for the following: 0 to 1000 VDC in 1 VDC increments, 350 μA max

Zeroing

Zero via button push - Display indicates zeroing in progress

Ports

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

Amp System factors

Nsk:μGym²/(h*A)
Nsk:Gym²/(h*A)
Nx,sk:Rm²/(h*A)
NA:GBq/A
NA:Ci/A
ND,W:mGy/(sec*A)
NA:MBq/A
NA:mCi/A
Coulombs System Factors

Nk:Gy/C
Nx:R/C
NGas:Gy/C
ND:Gy/C
ND,W:Gy/C

Real-Time Clock

On board, for data validation and storage

Audio

On board speaker for audio feedback on start-up, button presses, operator alerts, etc.

Dimensions

Width

26.7 cm (10.5 in)
Height

8.1 cm (3.2 in)
Length

21.1 cm (8.3 in)
Weight

2.5 kg (5.45 lbs)
Mode of Operation

Continuous

Power Requirements

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.
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.