Scalers and Ratemeters

TEL-ST150 Nuclear Lab Station

The TEL-ST150 Lab Station

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Designed for high school and college level nuclear science instruction, the Spectrum Techniques ST150 Nuclear Science Station provides a complete solution for performing many basic nuclear demonstrations and experiments. The single convenient package includes a GM detector with multi-position sample stand, a 6-decade scaler with preset timer, a built-in 11-piece absorber set and a computer interface for optional connection to either the PC or Macintosh computer.

The internal thin windowed 15mm Geiger Mueller counter allows detection of alpha, beta and gamma radiation. Perform experiments such as, The Range of Alpha Particles, Absorption of Beta Particles, Inverse Square Law, Half-Life decay, Detection Efficiency and Counting Statistics, plus many additional laboratory exercises for both introductory and intermediate instruction.

Digitally controlled variable high voltage is supplied to the GM detector allowing students to plot the Geiger Plateau for understanding the mechanism of nuclear radiation detection, a feature not usually found in an entry level instrument. Large LED indicators display the count, preset time or high voltage setting. Computer connection and data transfer is provided through a serial port to the on-board microprocessor. Operation with either a PC or Macintosh allows students to run experiments from a laboratory work station and display data directly on the computer screen.

The software package supplied with the system stores each measurement in a data file which can be saved to disk for transferring into a spreadsheet for graphing and presentation. If WINDOWS operating systems are not available on the work station, the software provides drivers for many popular dot matrix printers for printouts and screen dumps.

Specifications

GM counter:
15mm diameter
.5-2mg/cm2 window
500V operating
150V plateau
Sample holder:
5-position
1cm spacing
Display:
6-decade
999999
1.25in. LED
Preset Time:
0-900000 sec. decade selection
High Voltage:
0-800V digital steps of 20V
Indicators:
Run, Set HV, Set Time.
Serial Ports:
DB-9M for PC
DB-9F for MAC
Power:
9V DC from unit supplied. (110 or 220AC) Specify at time of ordering
Absorbers:
11-piece set, 6-7400 mg/cm2
Software Supplied:
Displays Gross Count, Elapsed Time, Digital CPM, Digital CPS, Analog CPM. Analog CPS, Data File (Run#, Voltage, Counts, Elapsed Time, Time of Day). Preset number of runs and Pause time between runs. File save to disk (spreadsheet compatible format), save to printer.
TEL-ST150 Nuclear Lab Station
$800.00

TEL ST250 Ratemeter

The TEL-ST250 ratemeter

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The ST250 Ratemeter introduces new concepts to a basic nuclear radiation instrument. Battery operated (up to 8 hours with the internal rechargeable batteries), an AC line power charger and a Data Link with software to provide a direct connection to IBM-PC compatibles means the unit is extremely flexible. The ST250 can be used for radiation surveying, Nuclear Science Instruction or for Health Physics Training. Up to 150,000 cpm, a variable, fully regulated high voltage output of 0-1200VDC for GM tubes, and a large easy to read meter with dual scales makes the ST250 a world class instrument.

Specifications

Input:
BNC connector. Accepts standard Geiger counters.
High Voltage:
0 to +1200 volts, continuously variable by 10-turn potentiometer.
Display:
Precision 4.5" meter.
Ranges:
CPM - 600, 1500, 6000, 15,000, 60,000, 150,000.
CPS - 10, 25, 100, 250, 1000, 2500.
High Voltage
0 to 1200 volts
Data-Link:
DB-9 male, accepts standard cable to connect to computer serial port.
Power:
Internal rechargeable NiCd batteries, with LOW POWER indicator. Typically 8-hours run time on full charge.
Input 7.5 volt DC, at 300 mA from AC line charger supplied. Specify 110-220, or 220-240 VAC charger at time of order.
Software Supplied:
RADEM-PC emulation software. DOS program runs on most IBM compatible PC’s including CGA, EGA, VGA, SVGA, and Hercules graphics systems. Real time display of simulated analog ratemeter, auto ranging, CPM or CPS, digital ratemeter, nuclear scaler, preset timer, spreadsheet compatible data files.

TEL ST250 Ratemeter
$495.00

TEL ST360 Geiger-Mueller Counter

The TEL-ST360 Counter

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New dimensions to Nuclear Science Instruction and Health Physics Training are available with the ST360 Geiger-Mueller Counter. A microprocessor controller incorporated in the ST360 means features previously available only by purchasing multiple instruments are now available in a single unit. The classical nuclear scaler has now become a timer, preset counter, digital ratemeter with alarm, and computer interface. A large 6 digit LED readout and a 0-1200VDC fully regulated variable power supply for GM or scintillation tubes is also a part of the ST360. All functions of the ST360 are accessible and can be controlled by the computer software provided with the unit.

Specifications

Inputs:
BNC connector for GM, MHV for scintillation detector.
High Voltage:
0 to +1200 volts, digitally selectable in 10 volt increments via hardware or 5 volt increments with included software.
Display:
6-decade LED, 1 in. numerals. Displays counts, time, preset time, CPM, CPS, alarm level, and high voltage.
Audio:
Digital volume control of countrate and alarm point.
Modes:
Count for preset time preset number of runs, counts/min., counts/sec., set alarm level (in CPS), set high voltage 0-1200v, start/stop/reset, data transfer As well as a programable pause time between runs.
Timing/Counting Intervals:
Preset time in (seconds) 1-9, 10-90, 100-900, 1K-9K, 10K-90K, 100K-900K, preset number of runs, CPM, CPS, set alarm (in CPS).
Data-Link:
RS-232 serial port for PC and MAC plus a USB port.
Power:
Input 9.0 volts DC, at 500mA from AC line/charger supplied. Specify 110-120, 220-240 VAC at time of order.
Software Supplied:
A LABLINK software package for PC's and MAC is included with the TEL ST360. This bidirectional data link offers full control of all the MODE functions mentioned above. The software also provides a real-time display of a simulated analog ratemeter with auto-ranging, or a digital ratemeter in CPM or CPS, count, elapsed time, preset count, preset time, high voltage setting, acquisition time, and run number. Data is loaded into spreadsheet compatible files for transfer to many common spreadsheet programs.
TEL ST360 Scaler
$755.00