ORTEC 9349

Log/lin ratemeter

Analog ratemeter for photon or ion-beam counting with a fast negative NIM input.

Linear full-scale ranges
11 ranges: 10–10⁶ counts/s (1–3–10 steps)1
Logarithmic range
10–10⁶ counts/s; 5 decades2
Input signal
Fast negative NIM; −600–−1800 mV; 50 Ω1
Minimum pulse width
4 ns FWHM1
Datasheet

Specifications checked against the manufacturer’s documents on 2026-10-16

Manufacturer’s product page (opens in a new tab)

Overview

Key features

  • Linear and logarithmic ranges
  • Analog and recorder outputs
  • Adjustable zero suppression

Specifications

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

Performance

Meter accuracy2% of full scale1

Measuring range

Linear full-scale ranges11 ranges: 10–10⁶ counts/s (1–3–10 steps)1
Logarithmic range10–10⁶ counts/s; 5 decades2

Electronics & signal

Input signalFast negative NIM; −600–−1800 mV; 50 Ω1
Minimum pulse width4 ns FWHM1
Analog output0–10 V full scale; 100 Ω1

Mechanical

Net weight1.5 kg1

General

Zero suppression0–100% of full scale2
Module widthDouble-width NIM module2

The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.

Documents

Sources

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

  1. 1
    Publisher: ORTEC (AMETEK)Product page product page; Specifications – Weight Checked 2026-10-16
  2. 2
    Publisher: ORTEC (AMETEK)Datasheet p. 2; p. 1 Checked 2026-10-16
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Weight
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21 referenced values
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Detector type
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Weight
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14 referenced values
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Automatic alpha/beta counter with a large detector for air filters

Detector type
Pancake-style gas-flow proportional detector, Ø8.9 cm (GFW-3) or Ø12.7 cm (GFW-5)
Weight
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20 referenced values
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Detector type
Pancake-style gas-flow proportional detector, Ø5.7 cm
Weight
50 samples: 195 kg; 100 samples: 200 kg
17 referenced values
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