Specifications

942A-200 Operator's Manual

Model 942A, 946A, & 956A Universal Digital Ratemeters

Name: Model 942A, 946A, & 956A Universal Digital Ratemeters
Brand: Fluke Biomedical

The Model 942A-200 UDR can be used with all Model 943 Series Beta and Gamma Scintillation Detectors. The detector, when connected to the UDR, will comprise a single channel digital process monitoring channel. The Model 946A-200 UDR can be used with all Model 977 Series Wide Range Ion Chamber Detectors. The Model 956A-201 can be used with all Model 897A Series GM Detectors. Simulators are available for all models.

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This product can be used with the following:

940-4 In-line Effluent Monitor

Product Details

Models 942A, 946A, 956A

Overview

Key Features

User adjustable alarm set-points; retained indefinitely on power outage, keylock protection available
Front panel pushbuttons for check source activation, high voltage indication, alarm setpoint indication, alarm acknowledge, and power ON/OFF
Small front panel size allows dedicated display for each channel while minimizing panel space
Ability to use existing cables when replacing most analog readouts
Plug-in connectors for field connections
Remote alarm acknowledge capability
Available with international units display
Ability to interface with "smart detectors"
Optional ribbon cable output adapter

942A/946A/956A UDR Universal Digital Ratemeters

Universal Digital Ratemeters (UDR) are radiation monitoring instruments capable of being directly interfaced to pulse producing or low current producing detectors and displaying the radiation signal in various engineering units; (CPM, mR/h or µCi/cc). The UDRs are also capable of being interfaced to a computer system, via the digital communications port, and can be used as a local controller. Designed using military specification components, Fluke Biomedical’s family of UDRs achieves a high degree of reliability and are qualified for use in nuclear safety related applications. Thousands of UDRs have been installed around the world. - For use as area or process monitor readout - Compatible versions for all GM, ion chamber or scintillation detectors - High visibility LED display and status indicators - Analog outputs for recorder, remote display and computer - Fail safe DPDT relay contact outputs for warn, high and fail functions - Full seismic, environmental and EMI qualifications

For use as area or process monitor readout
Compatible versions for all GM, ion chamber or scintillation detectors
High visibility LED display and status indicators
Analog outputs for recorder, remote display and computer
Fail safe DPDT relay contact outputs for warn, high and fail functions
Full seismic, environmental and EMI qualifications

Applications

Specifications

The Universal Digital Ratemeters (UDR) feature a bright LED digital display and tricolor LED bar graph, both of which are easily read from a distance of 20 feet. The bar graph changes color with changes in alarm status, providing instantaneous recognition of relative levels and alarm status

Models

Model Name	Part Number	Description
942A-200		Detector - Scintillation detectors, GM process monitors Dynamic count range - 0 to 107 CPM Bargraph - 18 segments High voltage output - 450 to 1500 V @ 0.2 mA
946A-200		Detector - Ion chambers Dynamic range - 0.1 mR/h to 107 mR/h Bargraph - 24 segments
956A-201		Detector - GM detectors Dynamic range - Each detector model provides 5 decades. Readout covers 0.01 mR/h to 105 mR/h Bargraph - 24 segments High voltage output - 450 to 1500 V @ 0.2 mA

Accessories

Miscellaneous Accessories

Field Test Source

Field Test Source (part# 848-8-105)100 mCi (nominal), with adapterfor use with Universal Digital Ratemeter (956A-201)
Model number: 848-8-105

848-8 Series Field Test Sources

The Model 848-8 Series of field test sources are portable, self-contained fixtures for on-site testing of area monitors.

Vertical Tabs

942A-200

946A-200

956A-201

Model 942A, 946A, & 956A Universal Digital Ratemeters

Request a quote or demo

This product can be used with the following:

Product Details

942A/946A/956A UDR Universal Digital Ratemeters

Applications

Specifications

Accessories

Miscellaneous Accessories

Field Test Source

848-8 Series Field Test Sources

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