| Weight | 96 oz |
|---|---|
| Dimensions | 5.6 × 4 × 5 in |
Model A800P Portable Tiltmeter
The Model 800P Portable Tiltmeter is a versatile and accurate hand-held instrument for monitoring structural and foundation movement. Measurements are taken from tilt plates that have been cemented or bolted to any horizontal or vertical surface. Indexing bars on the bottom and sides of the tiltmeter enable you to reposition it accurately on the tilt plate, every time. When continuous monitoring is not required, Model 800P is an excellent choice because only one tiltmeter is needed to make measurements at an unlimited number of points.
The Portable Tiltmeter System includes one tiltmeter, one power and display unit, and a tough plastic carrying case. Ceramic or Aluminum Tilt plates are purchased separately.
Performance Specifications
| Output Channels | Inclination, Temperature |
| Resolution | 0.0001 arc° (0.36 arc second) |
| Repeatability | ±0.004° typical |
| Angular Range | ±5° from null position |
| Non-linearity | 1% of full scale |
| Filtering | 2-pole Butterworth low-pass filter for removing noise from vibration or jitter |
| Environmental | -25° to +70° operational -30° to +100° storage Sealed for use in damp environments; non-submersible. |
| Materials | Stainless steel; plastic sensor housing |
Related Products
Model 820 Shallow Water Tiltmeter Series
The model 820 Shallow Water is a high-precision submersible tiltmeter for use in fresh and saltwater applications. Using an absolute gravity-referenced electrolytic sensor, the 820 delivers superior measurement accuracy with virtually no long-term drift. High-gain units are sensitive to <0.0017 mm/m or better. Output options include analog (±5 VDC, ±10 VDC), current (4-20mA), and digital (RS-232 and RS-422). All units are rated to 200 meters (656.2 ft) waterproof for advanced protection from the elements. Use the 820 “Shallow Water” for structural monitoring, angle measurement and control, platform leveling, and more.
Model 83162 Dual-Channel Signal Conditioning Card
The model 83162 is a precision, two-channel signal conditioning card for use with all Jewell miniature tilt sensors. Powerful electronics generate balanced AC sensor excitation for up to two tilt channels (X and Y), then amplify, rectify and filter sensor response to produce a high-level DC output signal. Output is ±8 VDC single-ended (±16 VDC differential).
Units conveniently come with two switchable gain and filter settings (high/low; on/off) for added signal processing flexibility. The 83162 also includes an amplifier for one LM35 temperature sensor and will drive tilt and temperature signals over 1000m cable lengths. All units include calibration when ordered with Jewell Instruments miniature tilt sensors. Use the model 83162 for peak performance from our 755, 756, or ceramic tilt sensor packages.
Model 850 MEMS Tuff Tilt Series
This geotechnical MEMS tiltmeter is available in uniaxial and biaxial configurations. It presents a robust and rugged design for outdoor geotechnical use, but with the benefit of low-cost MEMS technology and ±5VDC, 0-5 VDC, or 4-20 mA output signals. It is an effective tilt sensing solution for platform leveling/positioning, structural monitoring, construction monitoring, industrial machinery positioning, radial gate measurement & control.

Model D750-100/200 Tiltmeter Series
The D750-100/200 tiltmeter series is the digital version of the Black Diamond Tiltmeter sensor line for geotechnical measurement. It includes a 0.001° and industry standard RS-485 or RS-422 digital output signals.
Model 781 Benchtop Signal Conditioner
The model 781 is a precision, two-channel bench-top signal conditioner for use with all Jewell miniature tilt sensors. Powerful electronics generate balanced AC sensor excitation for up to two tilt channels (X and Y), then amplify, rectify and filter sensor response to produce a high-level DC output signal. Output is ±8 VDC single-ended (±16 VDC differential).
Units conveniently come with two switchable gain and filter settings (high/low; on/off) for added signal processing flexibility. The 781 also includes an amplifier for one LM35 temperature sensor and will drive tilt and temperature signals over 1000m cable lengths. All units include calibration when ordered with Jewell Instruments miniature tilt sensors. Rugged and reliable, the 781 is an ideal choice for any laboratory application.
Model 84828 Slimline Signal Conditioning Card
The Model 84828 Slimline Signal Conditioning Card is a compact, analog signal conditioner for use with all Jewell Instruments miniature tilt sensors. Each 84828 card operates one 5-pin biaxial tilt sensor or one uniaxial sensor, plus one LM-35 temperature sensor, which may be installed on the circuit board. Model 84828 has one fixed gain and one RC low-pass filter, both of which can be factory-tuned to meet your requirements. This versatile and inexpensive signal conditioner has single-ended voltage output. Tilt output is measured as a ±4 VDC signal (calibrated range is ±2.5VDC). Units are also available with 0-5VDC output. The slim, low-profile design facilitates use in custom instrument packages, robotics, ROV pitch/roll control, and more.
Jewell provides factory calibration for all 84828 signal conditioning electronics when ordered with our 84053 and 84064 Ceramic, or Model 755- and 756- miniature tilt sensors.
Model 906 Little Dipper In-Place Inclinometer
Little Dipper is an in-place inclinometer system for monitoring slopes, embankments, deep excavations, tunnels, tank foundations, retaining walls, and other types of ground movement. Installed as a string of vertical or horizontal sensors inside inclinometer casing, or by direct burial, this instrument provides a continuous record of ground displacement. Fiberglass rods connect the sensors inside the casing, and fins or universal pivots couple the sensors to the casing walls. Little Dipper’s on-board electronics accept a wide input voltage range and drive long cables without signal loss. The waterproof and non-corrodible ABS sensor housing also makes the Little Dipper a popular tool for underwater tilt measurements in shallow marine applications. Select analog voltage output (biaxial) or 4-20 mA output (uniaxial only).
Model 802 Deep Water Submersible Tiltmeter Series
The Model 802 DeepWater Series is the fully submersible cousin of our Model 801 Tuff Tilt Series. Performance features are the same, but the DeepWater housing is machined from a solid piece of 316 stainless steel and incorporates a high-pressure neoprene connector. The pressure rating is 250 bars (2500 meters depth). Higher-pressure versions may be special ordered. Temperature rating is governed by the neoprene connector. Wider temperature range is available with other connector types. Units are available in a variety of configurations including single axis (uniaxial), or dual-axis (biaxial), analog, digital, or 4-20mA outputs.
Model A601-2A/2B High-precision Platform Tiltmeter
The model A601-2 Platform mount tiltmeter is designed for high precision tilt measurements. Units come with built-in micrometer leveling legs, for easy installation on any horizontal surface. The A601-2 also includes two switchable gains and two low-pass filter settings. Using an absolute gravity-referenced electrolytic sensor, the A601-2 delivers ultra-high sensitivity to <25 nrad with virtually zero long-term drift. Output is a stable ±8 DC voltage (±16 VDC differential). Rugged, reliable, and extremely accurate, the A601-2 is the preferred choice for volcano monitoring, high-precision geotechnical engineering, bridge deflection monitoring, precision metrology, radar platform leveling, and high-accuracy tilt monitoring applications worldwide.
Model 901 & 902 Clinometer
Model 901 (horizontal) and 902 (vertical) Uniaxial & Biaxial Clinometers accurately measure an angular position with the same performance as Model 900, but in a slim design for use where space is limited. High-gain, standard, and wide-angle versions are available, each with a different angular range. A901 and A902 (biaxial) use high-level voltage outputs to allow signals to be delivered over long cables. C901 and C902 – also referred to as ‘Tulip’ (uniaxial) are loop-powered, so measurements can be made using an economical 2-wire pair. These conveniently sized, low-cost units fit neatly into underwater pressure housings, well logging tools, drilling equipment, and many other devices.
755 & 756 Miniature Tilt Sensors
755- and 756-Series Miniature Tilt Sensors contain one or two of our electrolytic tilt transducers in a solid stainless steel or aluminum housing, with holes for vertical or horizontal mounting. These are the same high-precision sensors that we use in our 500– and 700-Series tiltmeters. Several of the models are available in vacuum-compatible versions designed for minimal outgassing under high-vacuum conditions. Two options are available, the high-gain 755-Series and mid-range 756-Series. Typical applications for these compact modules include X-ray mirrors, telescope mounts, wind tunnel models, and medical devices. The sensors may be operated at a distance (cable length) up to 100m from their Jewell Instruments signal conditioner.
Model 701 Platform Tiltmeter Series
The Model 701-2 Platform mount tiltmeter is our most popular design for high precision tilt measurements. Units come with built-in invar leveling legs, for easy installation on any horizontal surface. The A701-2 also includes two switchable gains and two low-pass filter settings. Using an absolute gravity-referenced electrolytic sensor, the A701 delivers ultra-high sensitivity to <0.1 µrad with virtually zero long-term drift. The output is a stable ±8 DC voltage (±16 VDC differential). The D701 digital version has onboard memory, with a storage capacity of up to 22,000 samples.
















