Jewell Instruments A711-2 Specifications
Model A711-2A/B/C(4X)
IP65 Weatherproof Floor-mount Tiltmeter
The model A711-2(4X) Weatherproof Floor-mount
Tiltmeter offers the same performance as the model
A701-2(4X), but in a floor-mount package. Units are
rated IP65 waterproof for use in wet, humid, and
corrosive environments. The A711-2(4X) bolts or clamps
to any horizontal surface, and is well suited for areas of
heavy traffic or vibration. Units deliver <1 μradian
resolution or better. Output is a stable ±8 DC voltage
(±16 VDC differential), and the powerful internal
electronics will drive cables over 1000m. Use this
precision tiltmeter for volcano monitoring, geotechnical
engineering, structural monitoring, platform leveling,
and any application where advanced protection from
weather is required.
A711-2A(4X) (High-gain) A711-2B(4X) (Mid-range) 711-2C(4X) (Wide-angle)
Angular Range
Scale Factor
Resolution <1 μradian 1 μradian 10 μradians
Repeatability 2 μradians (static) 2 μradians (static) 20 μradian
Non-Linearity 1% 2% 4% full (1% half span)
Time Constant 0.15 sec 0.2 sec
Kz Temp Coefficient (bias/°C)
Ks Temp Coefficient (%/°C) ±0.04%/°C (typical) ±0.13%/°C (typical)
Output ±8VDC (single ended); ±16VDC (differential)
Channels X-tilt, Y-tilt, Temperature
Output Impedance 270 ohms
Temperature Output
Power ±11 to ±15 VDC @ +11 and -6mA, 250 mV ripple max, reverse polarity protected
Environmental
Dimensions 6 x 6 x 4 inches (15 x 15 x 10 cm), 3 lb (1.4 kg)
Materials Anodized and painted aluminum
Cable 3m (10 ft) multiconductor cable + overall shield, PVC Jacket, connectors included
Specifications subject to change without notice on account of continued product development
±8000 μradians (±0.46°) ±4.0° ±70°*
1 μradian/mV
0.5°/V 10°/V
±4 μradians/°C (typical) ±0.004°/°C (typical)
0.1°C/mV typical (single ended; 0°C = 0mV)
-25 to +70°C operation; -30 to +100°C storage, IP65 (NEMA 4X)
Ordering Code Accessories
Part No. Description
70304
62301
62304
719-AL Vertical mounting bracket (L-bracket)
718-AL Horizontal mounting plate
Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103
sales@jewellinstruments.com • www.jewellinstruments.com • Tel (800) 227-5955
Power/signal cable, 10-conductor
(specify total length on order)
Female panel receptacle (mates to
62302 connector included with tiltmeter)
Extra female in-line receptacle
(one included with tiltmeter)
L00237 Rev. B
Model A711-2A/B/C(4X)
Wire Color
Function
Bendix
Connector
Red +12 to +15
V Power
H
Black
Power Ground
A
Violet
-12 to
-
15V Power
B
Blue +Y-tilt out
G
Brown
-Y-tilt out
K
Gray
-X-tilt out
J
Green
+X-
tilt out
C
White
Signal ground
E
Yellow
Temperature out
D
IP65 Weatherproof Floor-mount Tiltmeter
Dimensions:
Top view
Side view
Wiring/Pin-out:
Dimensions in inches (mm)
Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103
sales@jewellinstruments.com • www.jewellinstruments.com • Tel (800) 227-5955
L00237 Rev. B
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