CT12A INSTRUCTION MANUAL
56-101-03100-E CH. 2
May
/ 29 / 09 Page 9 of 19
CHAPTER 2: PRODUCT SPECIFICATIONS
1. PHYSICAL DATA
Height: 8 3/4” (22.2 cm)
Width: 4 3/8” (11.1 cm)
Depth: 1 1/2” (3.8 cm)
Weight: 1.2 Lbs. (0.54 kg)
2. POWER CHARACTERISTICS
A. 3.7 VDC lithium battery (accessible for replacement; access not needed for recharging)
B. Battery life:
• 14 hours maximum if instrument constantly ON
• 28 hours maximum for normal operation (activated approximately 30% of time)
C. Battery Charge:
2 ½ hours quick charge / 4 hours full charge
3. TEMPERATURE CHARACTERISTICS
Operating Range: -10° C to +50° C (+14° F to +122° F)
Storage Range: -20° C to +60° C (-4° F to +140° F)
4. CABLE APPLICABILITY
The cable tensiometer is calibrated for use on standard, multiple-strand, nonjacketed, air-
craft cable, made of carbon steel with zinc or tin over zinc coating (MIL-DTL-83420 specifi-
cation, type I, composition A) of 7 x 7 stranding in diameters of 1/16 and 3/32 inch, and 7 x
19 stranding for 1/8, 5/32, 3/16, 7/32, and 1/4 inch.
Do not attempt to use the cable ten-
siometer on cables of a different construction unless a custom calibration has been per-
formed. Barfield performs custom calibrations using other cables for an additional charge,
on
the condition that they do not have plastic jacket, this is, that they do not belong to type II.
5. TOLERANCES FOR TENSION MEASUREMENT
Tolerances are indicated in Table 2.
Variations in cable diameter will affect tension measurement accuracy. Stated accuracy is
contingent upon cables being in compliance with MIL-DTL-83420 specification, where cable
diameter is within 25% of specified range while centered at the nominal cable diameter. The
nominal cable diameter is defined by the cable used in calibration and specified on the certi-
fication of the unit.
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