ORTEC 974A

Quad counter/timer

Four-channel CCNIM counter with selectable timer operation and computer control through a serial interface.

Main channels
41
Capacity per section
8 decades1
Datasheet

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

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

Overview

Key features

  • Four counting channels with individual gates
  • Computer control and readout
  • Separate event counter through the interface

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

Pulse pair resolution10 ns negative; 40 ns positive2

Electronics & signal

Main channels41
Maximum counting rate, negative input100 MHz1
Maximum counting rate, positive input25 MHz2

Cooling

Capacity per section8 decades1

Connectivity & interface

CommunicationRS-232-C / 20 mA current loop1

Mechanical

WeightNet 2.4 kg3

General

Internal clock1 MHz1
Time base increments0.1 s / 1 min1
Module widthDouble-width NIM module1

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)Datasheet p. 1; p. 3 Checked 2026-10-16
  2. 2
    Publisher: ORTEC (AMETEK)Product page product page Checked 2026-10-16
  3. 3
    Publisher: ORTEC (AMETEK)Manual Manual, Specifications – Weight Checked 2026-10-16
MPC-9604
ORTEC

MPC-9604

Four-detector alpha/beta counter for high sample throughput

Detector type
Four pancake-style gas-flow proportional detectors, Ø5.7 cm, with cosmic guard detector
Weight
544 kg (shipping 635 kg); the support surface must bear 1,200 lb per unit
21 referenced values
ASC-950-DP-G
ORTEC

ASC-950-DP-G

Automatic gasless alpha/beta counter with sample changer

Detector type
Dual-phosphor scintillator (ZnS + plastic), Ø5.1 cm; gasless operation
Weight
50 samples: 49.9 kg; 100 samples: 54.4 kg
14 referenced values
WPC-1150-GFW-3/GFW-5
ORTEC

WPC-1150-GFW-3/GFW-5

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
816 kg
20 referenced values
WPC-1050-GFW-2
ORTEC

WPC-1050-GFW-2

Automatic low-background alpha/beta counter, 50 or 100 samples

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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