Ludlum 177-84 Alpha Beta Benchtop Counter

$1,770.00
Low stock! Only 1 left
$1,770.00
$1,770.00 $3,540.00
Up to $1,770 off

Features

  • Simultaneous Alpha & Beta Counting
  • Independent Alpha & Beta Readouts, Alarm Setpoints & Audible Signatures
  • Automatic Background Subtraction & Updating
  • 50 Hour Battery Backup

The Model 177-84 is a microprocessor based radiation survey instrument used to measure and discriminate low level alpha and beta radiation when used with an alpha-beta scintillation or proportional detector. The instrument has automatic background subtract and automatic background update. It also has an adjustable count timer which can be set from 0 to 120 seconds. An external switch must be connected to the instrument to initiate a count.

The radiation level is displayed on two analog meters. The Alpha meter dial indicates 0 - 1000 cpm on a three-decade log scale. The Beta meter dial indicates 100 - 100,000 cpm on a three-decade log scale. Each channel has its own distinguishable click per event audio tone. Beta events are a low pitch and alpha events are a high pitch. Beta clicks per event can be set at 1 per 1, 10, 100, or 1000. Each channel has its own alarm point which is adjustable from zero to full scale. Alarms are indicated by an audible tone and LEDs.

Compatible Detectors Gas proportional, Dual phosphor scintillation (such as Model 43-93 and Model 43-68)
Linearity ± 10% of true value, typically ± 2% of true value when measured with an electronic pulser
Meters Dual meters (one each for alpha and beta), 1 mA, 2 inch DC movement
Alpha Parameters Threshold: -1 to -180 mV
Meter Scale: 0 - 1000 cpm
Beta Parameters Threshold: -1 to -4 mV
Window: Adjustable 4 to 70 mV
Meter Scale: 100 - 100,000 cpm
Cross Talk ≤ 1% alpha counts in beta channel
≤ 10% gross counts in alpha channel
Controls Front Panel: ACK/Reset button, Meter readout mode (HV, Alarm, Ratemeter)
Rear Panel: Power On/Off
Status Indicators Green LEDs: Updating background, Checking, Check on
Red LEDs: Incomplete, Overload, Low battery
Inputs Count switch signal input via phone jack TINI-JAX #41
Response Time Beta varies between 1 to 5 s
Alpha varies between 5 to 15 s
Count Time Adjustable between 0 to 120 s in 8 s increments
High Voltage 200 to 2500 Vdc
Power 117 Vac, 60 Hz, and internal rechargable 6 V (sealed-acid) battery, battery life approximately 50 hours
Detector Connectors

Series type “C”
Ludlum 177-84 Alpha Beta Benchtop Counter

$1,770.00

Questions about this product?
Ask our experts.

Contact Us