Specifications - LUDLUM MODEL 19 Manual

Model 19 MICRO R METER
3
Section
Ludlum Measurements, Inc.
Technical Manual

Specifications

0
reading within 10% of true value
Linearity:
variable from 400 to 1500 Vdc; electronically regulated to
High Voltage:
within 1%
Battery Dependence:
within the meter battery check limits
two standard alkaline "
Power:
compartment
expected lifetime of approximately 2000 hours with the
Battery Life:
" / " switch in the
AUD ON OFF
built-in unimorph speaker and "
Audio Output:
provided on the front panel
two-scale meter face presenting 0-50 µR/hr with full
Counting Ranges:
scale range positions of 5000, 500 and 50; and 0-25 µR/hr with full scale
range positions of 250 and 25.
1 mA, 6.4 cm (2.5 in.) scale, pivot-and-jewel suspension
Meter:
photomultiplier coupled to a 2.5 x 2.5 (1 × 1 in.) NaI(Tl)
Detector:
crystal, mounted inside the instrument housing
cast-and-drawn aluminum with beige powder-coat finish
Construction:
and printed membrane front panel
15.2 x 8.9 x 21.6 cm (6.0 x 3.5 x 8.5 in.), not including instrument
Size:
handle
2.04 kg (4.5 lb), including batteries
Weight:
Page 3-1
instrument calibration change less than 3%
" cell batteries, secured in an isolated
D
position
OFF
Section 3
/ " switch
ON OFF
February 2012