Model 2350-1

General Purpose Data Logger

Part Number: 48-2751

Features

• Large Digital Display
• Stores 1000 Data Points
• Auto-ranging
• Stores 16 Detector Setups
• Overload Protection
• Alarms
• Wide Range High Voltage

The general purpose Model 2350-1 is a ratemeter / scaler / data logger designed to satisfy a wide range of applications. The large backlit LCD presents bar graphs, digital readings, and logged data on an 8-line by 15-character display. Up to 1000 data points can be stored, along with the location, date/time stamp, detector, count mode, count time, logging mode, and sample number. Location code information can be input via an optional bar code reader.

The five-decade range is fully auto-ranging with a wide-range, high-voltage supply capable of supporting virtually any detector. Up to 16 detector setups can be stored internally to facilitate swapping probes in the field. A single channel analyzer allows selecting the energy range of interest, and alarms are available in both the ratemeter and scaler counting modes. The front panel is relatively simple with an instrument power switch, a LCD backlight switch, an audio divide switch, an audio volume knob, and an alarm acknowledge/display scroll push button. Starting the scaler count cycle or logging data is accomplished by pressing the button located on the instrument handle. Other front-panel items are an RS-232 serial port and a wand port for connection to a bar code reader.

The instrument housing is cast aluminum with separate battery compartment, and includes a metal carrying handle. The Model 2350-1 offers a robust, high quality, fully featured, handheld radiation measuring instrument designed to cover any application or measurement criteria you may ever need.

• Specifications
• Options
• Documents
• Replacement Parts

• Specifications
• Options
• Documents
• Replacement Parts

Specifications

Indicated Use	Field analysis and data logging
Compatible Detectors	GM, Proportional, Scintillation Stores up to 16 detector setups
Display	8-line LCD display with 15 characters per line
Backlight	2-position toggle switch to turn backlight ON or OFF
Scaler	6-digit display
Timer	Used in conjunction with scaler. Count time can be set from 1 to 65,535 s in 1 s intervals.
Ratemeter	Digital ratemeter, corrected for dead time and calibration constant
Scale	Can display in rem/hr, Sv/h, R/hr, cpm, cps, dpm, dps, rad(r), Gray(G), C/kg, Ci/cm2, or Bq/cm2
Trend Indicator	5-decade logarithmic bar graph
Integrated Dose	Counter provided to give total accumulated dose for up to 45 days (will display in same units as ratemeter)
Alarm	Separate alarms for digital ratemeter, scaler, and integrated dose can be set at any point (audible and visual indicators)
Data Logger	Capable of logging up to 1000 individual data points with the following identifiers for each point: 8 Location codes (5 character) Time of day Month, Day, and Year Count rate/scaler count/integrated dose Count time Detector number Logging mode Sample number
Detector Parameters	Capable of storing the following parameters for 16 different detectors: Model number Serial number Calibration constant Dead time correction High voltage Threshold Window Display range multiplier Display time base Display units Overload current Ratemeter alarm setting Scaler alarm setting Low ratemeter alarm setting Integrated dose alarm setting Scaler count time
ACK/Scroll	Pushbutton to silence audio after alarm has been indicated and/or scroll through the various displays
Response	Fixed: Adjustable from 1 to 127 seconds in 1 second intervals Variable: Will vary according to number of counts present. Typical times from 10% to 90% of final reading, Fast: 4 to 25 s, Slow: 4 to 60 s
High Voltage	Adjustable from 400 to 2500 Vdc
Threshold	Adjustable from -100 to -1000 mVdc
Window	Adjustable from 0 to 1000 mVdc above threshold
Gain	Adjustable from 2 to 350 mV at threshold setting of 100
Dead Time	Adjustable to compensate for dead time of detector and electronics
Audio	Built-in unimorph speaker with volume control
Audio Divide	Operator-selected divisions of 1, 10, or 100 events per click
Temperature Range	0 to 50 °C (32 to 122 °F ) (LCD display limits temperature range)
Power	4 “D” cell batteries
Battery Life	Greater than 75 hours (low battery condition is automatically indicated)
RS-232 Port	A full-duplex communication port that allows for instrument setup by optional keypad or PC, also allows for data to be transferred to a PC file
Bar Code Reader (Optional)	Allows for setup of instrument by computer generated bar codes
Size (H x W x L)	14.2 x 11 x 22 cm (5.6 x 4.3 x 8.8 in.) without handle 20.9 x 11 x 22 cm (8.2 x 4.3 x 8.8 in.) with handle
Weight	2.4 kg (5.2 lb) including batteries

---

Options

Option	Description	Part Number
Programmable Terminal for Model 2350-1	Hand-held terminal with RS-232 connecting cable.	4334-066
Barcode Scanner for Model 2350-1	Hand-held barcode scanner.	8303-522
Optical Wand Barcode Reader	Hand-held, pen-like barcode scanner.	8303-1047

---

Documents

• Data Sheet
• Product Manual
• Model 2350-1 Windows Interface version 1.2.2
• Model 2350-1 Calibration, Parts & Schematics
• Model 2350-1 Command Descriptions

---

Replacement Parts

Description	Part Number
Meter Bezel	4371-024
LCD Display (serial numbers 266658 and less)	07-6334
LCD Display (serial numbers 266659 and greater)	07-6596
Handle without Pushbutton	4371-011
Handle with Pushbutton	4371-027

---