2.14 MAINTENANCE
Servicing
The telescopes are sealed units. The only servicing required is to clean the front window every 90 days with a clean,
soft cloth. This may need to be done more often in dusty environments. Cloth may be moistened with distilled water in
severe conditions. Clean the window very gently, do not apply undue pressure as the window is fragile and may be
damaged or broken. At the same time, the detection field should be walk tested to check its sensitivity. Should problems
arise, please contact our Technical Support staff for advice.
DO NOT TOUCH THE WINDOW WITH BARE HANDS. SALTS AND ACIDS FROM THE HANDS MAY DAMAGE THE
SURFACE OF THE WINDOW.
THE TELESCOPE CONTAINS NO USER SERVICEABLE PARTS AND IN THE EVENT OF FAILURE SHOULD BE
RETURNED TO ELTEC INSTRUMENTS, INC. FOR REPAIR. THE TELESCOPE IS HERMETICALLY SEALED AND
NITROGEN BACKFILLED. ANY DISASSEMBLY WILL COMPROMISE THE SEAL AND VOID THE WARRANTY.
2.15 MODEL 860M1 / 860M5 / 860M6 SPECIFICATIONS
Mechanical
Weight
. . . . . . . . . . . . . . . . . . . . . . .
2 lbs, 12 oz
Size
. . . . . . . . . . . . . . . . . . . . . . .
3.50" (8.89 cm) dia x 12.93" (32.84 cm) long
Enclosure
. . . . . . . . . . . . . . . . . . . . . . .
Painted PVC, hermetically sealed
Color
. . . . . . . . . . . . . . . . . . . . . . .
O.D. Green
(other colors available as special order)
Optical
Nominal Range . . . . . . . . . . . . . . . . . . . . . . .
500 ft (152 m)
with appropriate customer-supplied electronics
Spectral Response . . . . . . . . . . . . . . . . . . . . .
8 to 14 microns, double filtered
Detectors
. . . . . . . . . . . . . . . . . . . . . . .
Two channel Lithium Tantalate Pyroelectric
Electrical
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . .
3 to 15 VDC
Supply Current . . . . . . . . . . . . . . . . . . . . . . .
25
µ
A max
Output
. . . . . . . . . . . . . . . . . . . . . . .
Analog
Environmental
Operating Temperature Range . . . . . . . . . . . . . . .
-40
o
to +70
o
C
Storage Temperature Range . . . . . . . . . . . . . . . .
-40
o
to +70
o
C
Atmospheric Pressure . . . . . . . . . . . . . . . . . . .
1 atmosphere (15 PSI) positive or negative (vacuum)
Sealing
. . . . . . . . . . . . . . . . . . . . . . .
Watertight hermetic seal
Note: Housing is hermetically sealed and nitrogen backfilled to prevent condensation of moisture on the optics
at low temperature. Any disassembly of this unit will break the seal and void the warranty.
2.16 ACCESSORIES
AO54M1
=
Double Mounting Bracket
AO55
=
Removable Telescopic Sight
AO56M1
=
Single Mounting Bracket (Split Ring)
Page 11
