MAX 4000 Electrometer

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MAX 4000 Electrometer

One of the most widely used electrometers; the MAX 4000 is a versatile, reference-grade tool ideal for a spectrum of radiation therapy applications.
 

Automatic Threshold Detection

  • Automatically detect the start and stop of radiation exposure, allowing sequential measurements without resetting the electrometer.

 

Low Noise, Repeatable Measurements

  • Exceptional 0.001 pA to 500.00 nA range, 0.01 pC to 999,999 nC range.
  • 0.1% repeatability and exceptionally low leakage of less than 1 fA.
  • Digital filter eliminates nearly all the effects of noise, resulting in stable, exact measurements.

 

Powerful Data Management

  • MAX COMM™ software allows for comprehensive control of dose and dose-rate measurements, chamber detectors, remote operations and data logging.

 

Specifications                                                   
 
REF Number 90015
Height                                          7 cm (2.75 in)
Width                                           22.2 cm (8.24 in)
Length                                      23 cm (9 in)
Weight                                      1.4 kg (3.0 lbs)
Three Modes RATE:
Low Range 0.001 pA – 1000.00 pA, 1 fA resolution
High Range 0.001 nA – 500.00 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

COMBINED:
Accumulated charge and the current readings are displayed simultaneously
Charge Collections TRIGGER:
Automatic start, stop, and reset based on user defined thresholds
(Start: 0.02 – 9.99 pA; Stop: 0.01 – 9.98 pA)

TIMED:
User set duration (Range: 0 – 600 sec;
Increment: 15 sec; Resolution: 1 sec)

CONTINUOUS:
Unlimited duration with manual stop
Range Switching User selectable - High or Low
Repeatability ± 0.1% (IEC 60731 requirement: ± 0.5%)
Long-Term Stability 0.5% (over one year)
Stabilization Time ± 0.1% (IEC 60731 requirement: ± 0.5% of value at 1 hr for measurements taken at 15 min and 6 hrs)
Response Time < 3 s on high range (IEC 60731 requirement: < 3 s)
Non-Linearity ± 0.25% (IEC 60731 requirement: ± 1.0%)
Conformity                                   CE 93/42/EEC
Reference class according to IEC 60731
Zero Drift ± 0.25% (IEC 60731 requirement: ± 0.5%)
Zero Shift ± 0.25% (IEC 60731 requirement: ± 0.5%)
Display                                      Backlit LCD, 2 x 20 with 5/16" characters
Input                                        BNC two lug, triaxial connector
Bias Voltage Nominal ± 450 volt bias

5 USER BIAS SETTINGS:
-450, - 300, - 150, 0; 150, 300, 450 (VDC)

ACCURACY:
± 0.3 volt
Zeroing                                      Automatic zero function, user activated
Output                                       Isolated RS-232; bidirectional 19,200 baud rate; 8 data bits; no parity; 1 stop bit; compatible with Argus QC4 software
Power                                       100-240 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 battery: 8 hrs per charge
Product Standards CE 93/42/EEC