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Summary of Contents for Ludlum Measurements 2000
- Page 1 LUDLUM MODEL 2000 SCALER November 2020 Serial Number 195271 and Succeeding Serial Numbers...
- Page 2 LUDLUM MODEL 2000 SCALER November 2020 Serial Number 195271 and Succeeding Serial Numbers...
- Page 3 RETURN OF GOODS TO MANUFACTURER If equipment needs to be returned to Ludlum Measurements, Inc. for repair or calibration, please send to the address below. All shipments should include documentation containing return shipping address, customer name, telephone number, description of service requested, and all other necessary information.
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Page 6: Table Of Contents
Environmental Conditions for Normal Use Cleaning Instructions and Precautions Warning Markings and Symbols Replacement of Main Fuse(Back Panel) Data Output Software Prior to Installation of Software Installation of Software Button Functions RS-232 Commands Software License Agreement Recycling Parts List Ludlum Measurements, Inc. November 2020... - Page 7 Model 2000 Scaler Ludlum Measurements, Inc. November 2020...
- Page 8 MODEL 2000 Technical Manual Main Board, Drawing 167 × 395 Push-wheel Board, Drawing 167 × 264 Display Board, Drawing 167 × 276 Wiring Diagram, Drawing 167 × 433 Drawings and Diagrams Ludlum Measurements, Inc. November 2020...
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Page 9: Introduction
Section 1 Section Introduction he Ludlum Model 2000 Scaler is a self-contained counting instrument designed for operation with scintillation, proportional, or GM (Geiger- Mueller) detectors. Counting is displayed as a scaler count on an LED (light-emitting diode) display. The instrument may be powered by 95- 250 VAC, 50-60 Hz or by four “D”... -
Page 10: Getting Started
Repair and Calibration division where you will find a link to the form. Note: Ludlum Measurements, Inc. recommends recalibration at intervals no greater than one year, assuming that regular operational checks are performed. Check the appropriate local, state, and federal regulations to determine required recalibration intervals. -
Page 11: Power
MODEL 2000 Technical Manual Section 2 Power Select either line ( ) or battery ( ) operation with the power switch. LINE : Connect the instrument to line power of 95–250 Vac, 50 60 LINE operation Hz using the power cord supplied with the instrument. Turn the power switch to and proceed to use the instrument. -
Page 12: Operating Point
MODEL 2000 Technical Manual Section 2 For proportional detectors: Set on 0.20 (approximate 2 mV input threshold). Operating Point The instrument and detector operating point is established by setting the probe voltage ( ) and instrument sensitivity ( ). Efficiency, background and noise for a given detector system are fixed by the physical makeup of the detector and rarely vary from unit to unit. -
Page 13: Specifications
MODEL 2000 Technical Manual Section 3 Section Specifications : line or battery power Power : 95–250 Vac, 50-60 Hz single phase, 250W Line Power : four "D" cells with typical life of 120 hours; self contained in Batteries the instrument... - Page 14 MODEL 2000 Technical Manual Section 3 : 3.1 kg (6.9 lb) Weight : beige powder coat with sub-surface printed front panel Finish Ludlum Measurements, Inc. Page 3-2 November 2020...
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Page 15: Description Of Controls And Functions
MODEL 2000 Technical Manual Section 4 Section Description of Controls and Functions Front Panel Count Lamp : a red LED, indicating that the scaler is in the count cycle : resets and starts the scaler counting. The scaler turns COUNT switch off at the end of the preset time. -
Page 16: Back Panel
MODEL 2000 Technical Manual Section 4 Back Panel a 9 pin “D” connector, allowing output to a RS-232 connector computer or optional printer : two-pole dipswitch located on the rear chassis RS-232 Data Dipswitch underneath the calibration cover; controls the RS-232 data The top switch ( ) controls the type of data. -
Page 17: Safety Considerations
Pollution Degree 1 (as defined by IEC 664) Cleaning Instructions and Precautions The Model 2000 may be cleaned externally with a damp cloth, using only water as the wetting agent. Do not immerse the instrument in any liquid. Observe the following precautions when cleaning: 1. -
Page 18: Warning Markings And Symbols
Ludlum Measurements, Inc. The Model 2000 Scaler is marked with the following symbols: ALTERNATING CURRENT (AC) (IEC 417, No. 5032) - designates an input receptacle that accommodates a power cord intended for connection to AC voltages. -
Page 19: Replacement Of Main Fuse(Back Panel)
MODEL 2000 Technical Manual Section 5 CAUTION, RISK OF ELECTRIC SHOCK (per ISO 3864, No. B.3.6) – designates a terminal (connector) that allows connection to a voltage exceeding 1 kV. Contact with the subject connector while the instrument is on or shortly after turning off may result in electric shock. This symbol appears on the front panel. -
Page 20: Data Output
Ensure that both the computer and the Model 2000 are turned Connect one end of the supplied RS-232 cable to the Model 2000 and connect the other end of the cable to any unused serial port on the back of the computer. -
Page 21: Button Functions
An icon in the start menu is created under: Start/Programs/Ludlum Measurements, Inc. /Model 2200/2000. 3. Prior to running the program, ensure that the Model 2000 is in the PC mode and the count time push-wheels are set to“000.” BUTTON FUNCTIONS : Click on this button to start a count. -
Page 22: Rs-232 Commands
Technical Manual Section 6 RS-232 COMMANDS The Model 2000 communicates by way of an RS-232 interface. The RS-232 port operates at: 2400 baud, 8 data bits, 1 stop bit, no parity, and hardware (RTS/CTS) flow control. A standard RS-232 cable with straight-through connections is required. - Page 23 MODEL 2000 Technical Manual Section 6 Ludlum Measurements, Inc. Page 6-4 November 2020...
- Page 24 MODEL 2000 Technical Manual Section 6 Ludlum Measurements, Inc. Page 6-5 November 2020...
- Page 25 MODEL 2000 Technical Manual Section 6 Ludlum Measurements, Inc. Page 6-6 November 2020...
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Page 26: Recycling
To this end, Ludlum Measurements, Inc. strives to supply the consumer of its goods with information regarding reuse and recycling of the many different types of materials used in its products. With many different agencies –... -
Page 27: Parts List
MODEL 2000 Technical Manual Section 8 Section Parts List Reference Description Part Number Model 2000 Scaler UNIT Completely Assembled Model 2000 Scaler 48-1648 BOARD Completely Assembled Main Board, Main Circuit Board 5167-383 Drawing 167 × 395 CRYSTAL MICRO 6.144 MHZ... - Page 28 MODEL 2000 Technical Manual Section 8 Reference Description Part Number C46-C47 10uF, 25V 04-5728 C48-C57 0.01uF, 500V 04-5696 C61-C62 22uF, 20V 04-5672 C64-C65 0.1uF, 50V 04-5663 C66-C67 10uF, 25V 04-5728 47uF, 10V 04-5666 1uF, 16V 04-5701 TRANSISTORS MMBT3904LT1 05-5841 REG-LT1460KCS3...
- Page 29 MODEL 2000 Technical Manual Section 8 Reference Description Part Number 200 OHM, 1/8W, 1% 12-7846 R12-R19 1K, 1/8W, 1% 12-7832 10K, 1/8W, 1% 12-7839 2.21K, 1/8W, 1% 12-7835 100K, 1/8W, 1% 12-7834 33.2K, 1/8W, 1% 12-7842 10 OHM, 1W 12-7526...
- Page 30 MODEL 2000 Technical Manual Section 8 Reference Description Part Number BOARD Completely Assembled Push-wheel Board, Push-wheel Board 5167-333 Drawing 167 × 264 CAPACITORS C1-C3 0.001uF, 100V 04-5519 SWITCHES SW1-SW3 PUSHWHEEL 4167-504 DIODE 1N4148 07-6272 CONNECTOR 640456-8 MTA100 13-8039 Display Board,...
- Page 31 MODEL 2000 Technical Manual Section 8 Reference Description Part Number 640442-6 MTA100 13-8171 1-640442-0 MTA100 13-8136 640442-6 MTA100 13-8171 640456-2 MTA100 13-8073 640442-8 MTA100 13-8184 640442-3 MTA100 13-8135 COAX PIGTAIL 8167-432 640442-6 MTA100 13-8171 AC RECEPTACLE W/ CORCOM FILTER 21-9830...
- Page 32 MODEL 2000 Technical Manual Section 9 Section Drawings Main Board, Drawing 167 × 395 (5 sheets) Main Board Component Layout, Drawing 167 × 396 Push-wheel Board, Drawing 167 × 264 Push-wheel Board Component Layout, Drawing 167 × 265 (2 sheets) Display Board, Drawing 167 ×...
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