Ludlum Model 4 Monthly Rental

$54.00
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$54 monthly/$25 weekly

Non-routine instrument setup and/or calibration requests will incur a one-time setup/calibration charge in addition to rental rate noted above.  When this applies, you’ll be informed of the amount of the additional charge at time of order or, if requested, prior to placement of order.

  • 0-500 cpm base scale
  • Four selectable ranges (x1, x10, x100 and x1K)
  • Used with proportional, scintillation, or GM detectors
  • Dead time compensation

0-500 cpm base scale 

Four selectable ranges (x1, x10, x100 and x1K) 

Used with proportional, scintillation, or GM detectors 

Dead time compensation

Power: 
2 standard "D" batteries

Adjustable high voltage:
200 - 2,500 volts

Sensitivity:
2 to 40 mV

Linearity:
+/-5% full scale

Overrange protection (lamp and full scale meter indication)

Audio: 
Built-in unimorph speaker w/ON-OFF control

Response: 
Slow (22 seconds) or Fast (4 seconds)

Size: 
4.2"H X 3.5"W X 8.5"L

Weight: 
3 lbs.