Jewell Instruments D711 Specifications

Model D711-A/B/C

Digital Floor-mount Tiltmeter

The model D711 Floor-mount Tiltmeter is a rugged,
high-precision instrument with advanced digital
firmware. Output is RS232 or RS422 (RS485 full
duplex). The D711bolts or clamps to any horizontal
surface, and is well suited for areas of heavy traffic
or vibration. Utilizing a high-precision electrolytic
sensor element, units deliver up to 1 μradian
resolution with virtually zero long-term drift.
Programmable firmware controls include sample
averaging, auto-zero (tare), baud/output rate,
temperature compensation* and more. The D711
also includes on-board memory, with storage
capacity up to 22,000 samples. Use the D711 for
volcano monitoring, geotechnical engineering,
structural monitoring, platform leveling, and more.

D711-A (High-gain) D711-B (Mid-range) D711-C (Wide-angle)
Angular Range
Resolution 1 μradian 10 μradian 4 arc sec
Repeatability 4 μradians (static) 10 μradians (static) 4 arc sec
Non-Linearity 0.4% 0.1% 0.1%
Time Constant 0.15 sec 0.15 sec
Kz Temp Coefficient (bias/°C)
Ks Temp Coefficient (%/°C) ±0.02%/°C (typical) ±0.05%/°C (typical)
Output RS232, RS422 (RS485 full duplex)
Output Format NMEA XDR, Trimble TCM, Ashtec compatible, Simple (default: X, Y, Temp., S/N)
Baud Rate 9600 (default), 19200, 28800, 57600, 115200, 130400
Channels X-tilt, Y-tilt, Temperature, Serial No.
Power 7-28 VDC @ 30mA, 250 mV ripple max, reverse polarity protected
Environmental -40 to +85 C operation and storage; IP65
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

±0.5° ±5.0° ±70°*

±3.5 μradians/°C (typical) ±0.004°/°C (typical)

Ordering Code Accessories

Part No. Description

70304

62401

719-AL Vertical mounting bracket (L-bracket)

718-AL Horizontal mounting plate

Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103

[e-mail] • www.jewellinstruments.com • Tel [phone]

Power/signal cable, 10-conductor
(specify total length on order)
Extra female panel receptacle
(one included with tiltmeter)

L00250 Rev. B

Model D711-A/B/C

Digital Floor-mount Tiltmeter

Dimensions:

Top view

Side view

Wiring/Pin-out:

Wire Color Function Connector Pin DB9 Pin (RS422) DB9 Pin (RS232)

Green RX (RS232) G --- 3

Orange TX+ (RS485) D 4 ---

Yellow RX- (RS485) C 9 --­Brown RX+ (RS485) B 8 ---

Drain Wire Cable Shield F --- ---

Dimensions in inches (mm)

Tiltmeter End Mating Cable (Computer End)

Red Power H --- ---

Black Ground A 1 5

Blue TX (RS232) E --- 2

Gray TX- (RS485) J 5 ---

Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103

[e-mail] • www.jewellinstruments.com • Tel [phone]

L00250 Rev. B