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 ±8000 μradians (±0.46°) ±4.0° ±70°* 1 μradian/mV Scale Factor 0.5°/V 10°/V 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) ±4 μradians/°C (typical) ±0.004°/°C (typical) 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 0.1°C/mV typical (single ended; 0°C = 0mV) Power ±11 to ±15 VDC @ +11 and -6mA, 250 mV ripple max, reverse polarity protected Environmental -25 to +70°C operation; -30 to +100°C storage, IP65 (NEMA 4X) 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 Ordering Code Description 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) Vertical mounting bracket (L-bracket) Horizontal mounting plate Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103 [email protected] • www.jewellinstruments

IP65 Weatherproof Floor-mount Tiltmeter rffBTTTTTTTJim Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103