Model 2241 Digital Survey Meter / Scaler
- Digital LED Display with Backlight
- Auto-Ranging
- Built-In Scaler
- Alert and Alarm
- Utilizes G-M, Proportional, and Scintillation Detectors
- RS-232 Data Dump
PART NUMBER:48-2628
COMPATIBLE DETECTORS: Proportional and dual phosphor scintillation detectors
CONNECTOR: Series “C” (others available)
AUDIO: Dual or single tone click-per-event (beta only) through a built-in speaker with an adjustable volume control located on front panel; headset jack located on the instrument ?can?
METER:1 milliamp (mA), with pivot-and-jewel suspension, 8.3 cm scale, 250 degree
LCD: 6 digit direct-driven with 6.4 mm characters, a counter overflow arrow, and colons for indicating a count in process
RANGES: Four linear range multiples of ×1, ×10, ×100 and ×1000; used in combination with the 0-500 CPM meter dial providing an overall range of 0-500 kcpm
LINEARITY: Within 10% of true value for the analog rate meter; within 2% for the LCD
SCALER: 6 digit LCD display with 0.25"(0.64cm) digits, overflow arrow, and colons to indicate when a count is in process
COUNT: Pushbutton to initiate scaler count
COUNT TIME: Internally selected times of 0.1, 0.5, 1, or 2 minutes
SELECTOR SWITCH: Toggle switch to select alpha and beta, alpha only, or beta only
HIGH VOLTAGE: Externally adjustable from 200 to 2000 Vdc
THRESHOLD: Beta threshold (BT) is adjustable from 2-10 millivolts (mV); Alpha threshold (AT) is adjustable from 50-150 mV
WINDOW (Beta only): Beta window (BW) is adjustable from 20-40 mV
OVERLOAD: Senses detector saturation. Indicated by red lamp on meter and meter going to full scale (adjust- able depending on detector selected)
RESPONSE TIME: ×1 range multiplier = 10 seconds, ×10 = 7 sec., ×100 = 2 sec., ×1000 = 1.5 sec.; all response times measured from 10-90% of full-scale
POWER: 2 each “D” cell batteries (housed in sealed compartment that is externally accessible)
BATTERY LIFE: Greater than 350 hours with alkaline batteries (battery condition can be checked on meter)
CONSTRUCTION: Drawn-and-cast aluminum, with beige powder-coating
TEMPERATURE RANGE: -14° F(-10° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE: 4.2"(10.67cm)H X 3.5"(8.9cm)W X 8.5"(21.6cm)L
WEIGHT: 3.5 lbs(1.6kg) including batteries