Victoreen Model 190 with the associated programmable dongle.

From the manufacturer:

Backlit analog/digital display
Interchangeable probe adaptermodule
Error-free visual indication
Auto-ranging
Multiple probe use
Available in SI units

INTRODUCTION
The Victoreen Model 190 is compatible with Geiger-Mueller (GM) detectors, neutron probes, proportional counters, and scintillation probes operating from 300 to 1300 volts. Depending on probe selection, the Model 190 detects alpha, beta, gamma, neutron, or X-ray radiation within an operating range of 1 μR/h to 1 R/h or 1 CPM to 1,000,000 CPM. The unit is available with either an MHV or a BNC connector to provide the user with versatility in probe selection. Visual indication of selected parameters, as well as measured values, are displayed
on the analog/digital display.

APPLICATION
The Model 190 Survey and Count Rate Meter is an easy-to-use instrument designed to meet the high technology requirements of Health Physics, Medical Physics, and Non-Destructive Testing applications.

FEATURES
LCD Display Readout
• 2.6 inches (6.6 cm) x 2.0 inches (5.1) cm
• Analog scale has fifty-one elements arranged in a radius arc. Each element represents 2% of full scale. Scale markings are 0, 2, 4, 6, 8, and 10. Scale length is 2.2 inches (5.6 cm)
• Scale multiplier is 0.0001 to 1 million, depending on the probe selected and the units activated
• 16-character alphanumeric display shows digitized average of the bar graph value. Displays operational units such as radiation unit changes, response time changes, data, and labels Pushbutton Controls
• Light: Activates a background light for a preset or indefinite amount of time
• Mode: Rolls through and displays the available units for the selected mode of operation
• Log: Enters and sequentially labels the displayed data into a data log
• Rate/Integ: Allows the user to select the mode of display
• Resp Time: Rolls through and displays available response times (3, 6, 12, and 24 seconds) for user selection
• Audio: Allows the user to turn on/off the audio indicator

SPECIFICATIONS
Operating Ranges (dependent on selected probe)
Toggles and selects rate units:
μR/hr mR/hr R/hr
CPM CPS
μSv/hr mSv/hr
DPM Bq/cm2 μCi/cm2
and the complementary units in the integrate mode:
μR mR R CTS D μSv mSv Bq μCi
with the integrated time value in seconds
Accuracy
Within 10% of reading between 10% to 100% of full scale indication on any range, exclusive of typical energy dependence. Accuracy is probe dependent

Detector
Accepts GM detectors, neutron probes, scintillation probes, and proportional counters operating at high voltages between 300 and 1300 volts
Adapter Module Contains calibration data and high voltage settings for a specified probe. The module is available with an MHV connector.
Specify the type of connector with order
Part number 190060 for MHV adapter module
By using multiple replaceable probe adaptor modules, each module can be assigned to a specific probe. The module’s EPROM stores the calibration factors for a specific probe. When plugged into a Model 190 Survey and Count Rate Meter, it automatically sets the high voltage and
activates the calibration data set for the specific probe. By using modules married to specific probes, the user has the convenience of using only one Model 190 with multiple probes for survey work

Log
Logs 211 data points and sequentially labels data points. (Data retrieval requires the Model 190-1A Infrared Communicator). With the communicator, alphanumerics up to 16 characters can be programmed into the Model 190 to name the locations of individual data points to be
collected. The location name is displayed when the Log button is pressed. Press the Log button again, and the data point is stored

Power
Four 9-volt batteries, 200 hours operation,
automatically indicates when battery is low
Warm Up Time
15 second diagnostic check
Check Source
Natural uranium, mounted on the case

Environmental
Temperature Range
– 10°C to + 60°C
Relative Humidity
0 to 95%, non-condensing
Construction
Molded ABS plastic, splash-proof case
Probe fits into side-mounted ABS plastic probe
holder with Velcro ® straps
Dimensions
3.75 in (w) x 9.2 in (d) x 2.1 in (h)
(9.2 x 23.4 x 5 cm)
Weight (without probe)
1 lb 9 oz (708.7 g) display.