Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
Versatile and accurate. One of the most widely used reference electrometers in radiotherapy — covering absolute dosimetry, patient dosimetry, SRS and all QA protocols from daily output to annual calibration.
| Current range | 0.001 pA to 500.00 nA |
| Charge range | 0.01 pC to 999,999 nC |
| Repeatability | 0.1% |
| Leakage current | < 1 fA |
| Noise reduction | Digital filter technology |
| Display | Redesigned high-visibility display |
| Software | MAX COMM™ — dose, dose-rate, logging, remote |
| Remote operation | Yes — via MAX COMM |
| Chamber management | Built-in detector database |
| Applications | Absolute, relative, patient dosimetry; SRS; daily/monthly/annual QA |
| Standards | TRS-398, TG-51, TG-142 compatible |
One electrometer — the full dosimetry spectrum
TRS-398 and TG-51 reference dosimetry with Farmer-type chambers. 0.001 pA minimum current resolves even the smallest ionisation signals.
Accurate output measurements for TG-142 annual and monthly QA. Remote operation via MAX COMM frees the physicist from the vault during irradiation.
In-vivo and point-dose patient dosimetry with compatible diode and IC detectors. Data logging to MAX COMM for audit trail.
Measures very small ionisation currents (< 1 pA) required for small-field SRS chamber characterisation without saturation or noise.
Fast digitisation with digital filter for clean, repeatable daily output measurements. Chamber correction factors stored in device memory.
Full charge integration mode for pulsed electron beam measurements. Compatible with parallel-plate chambers for electron reference dosimetry.
From the smallest small-field SRS measurement to the largest calibration beam, the MAX 4000 Plus covers nine decades of current without switching external hardware.
Sub-femtoampere leakage is the lowest specification available in a clinical electrometer. Measurements near detection threshold are not polluted by instrument leakage.
Three decades of precision electrometer design. The MAX 4000 Plus is in routine clinical use at thousands of radiotherapy centres worldwide.
Contact Saxsons Group for pricing, AERB import documentation, calibration traceability and installation support.