|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.
|Output Channels||Inclination, Temperature|
|Resolution||0.0001 arc° (0.36 arc second)|
|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|
The model 875 Mini “Tuff Tilt” Tiltmeter combines high precision and durability in a miniaturized and economical instrument package. Using MEMS technology, the 875 delivers superior measurement accuracy with virtually no long-term drift and a resolution of 0.05°. Output options include 0.5-4.5Vdc, 4-20mA and digital RS-485. All units are rated IP67 waterproof for advanced protection from the elements. Use the 875 Mini “Tuff Tilt” for structural monitoring, angle measurement, and control, platform leveling, testing and research, OEM, and more.
The Tulip-SC is a precision 4-20mA signal conditioning card for use with all Jewell Instruments miniature tilt sensors. Each TulipSC card operates one single-axis tilt sensor. Tilt output is measured as a 4-20mA output. The Tulip-SC is current loop-powered, so measurements can be made over long cable lengths using an economical 2-wire pair. Units also come with an onboard thermistor for measuring temperature.
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.
The IRIS-SC digital signal conditioning card is a powerful control device designed for use with all Jewell miniature tilt sensors. Output is ASCII RS-232 or RS-422(485) serial. Standard firmware includes five user-programmable alarm/trigger thresholds for tilts tilt switch/control applications. When a selected threshold is reached, the circuitry sets the output high
on one of the pins in the H3 control connector. Other firmware features include user-programmable data output rates, sample averaging, autozero (nulling), and baud rate. The IRIS-SC can also log up to 22,000 samples to internal memory for data dump/download on user command.
All IRIS-SC units include calibration when ordered with Jewell miniature tilt sensors (specify calibrated range on order).
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.
The Model 801 “Tuff Tilt” Tiltmeter series combines high precision and durability in an economical instrument package. Using an absolute gravity referenced electrolytic sensor, the 801 series delivers superior measurement accuracy with virtually no long-term drift. Units are available in a variety of configurations including single axis (uniaxial), or dual axis (biaxial), analog, digital, or 4-20mA outputs.
All units are rated IP65 waterproof for advanced protection from the elements.
The models A711-2 (floor-mount), and A716-2 (wall-mount) bolt or clamp to any surface, and are well suited for areas with heavy traffic or vibration. Electronic performance is identical to the model A701-2. Floor-mount models are available with a weatherproof NEMA 4X seal (A711-2 4X), or with an RS-232, RS-422, or RS-485 digital output (D711). D711 units also include onboard memory with a storage capacity of up to 22,000 samples. Units include two switchable gains and two low-pass filter settings and are sensitive to <0.1 µrad. Applications include volcano monitoring, high-precision geotechnical engineering, bridge deflection monitoring, precision metrology, radar platform leveling, and high-accuracy tilt monitoring applications where bolt-on installations are required.
The dual-axis Model 900 is an inexpensive, gravity-referenced clinometer with analog voltage output and compact dimensions. Sold without a housing, its small size and performance make it an excellent choice for many OEM, test, and measurement applications. It is available in high-gain, standard, and wide-angle versions, each with a different angular range. Model 900 accepts a wide input voltage range and provides high-level single-ended outputs that are easily measured with any voltmeter or digital recording system. Viscous damping and temperature measurement are available as options.
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).
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.
The Model 84800 is a single-channel, compact, high-performance signal conditioner for use with all Jewell Instruments miniature tilt sensors. Each 84800 conditioning card will provide excitation and signal conditioning for any electrolytic tilt sensor and for one LM-35 temperature sensor. Output is a stable ±5 DC voltage (±10 VDC differential). Units also include a built-in 1.75 sec low-pass Butterworth filter for superior noise rejection (specify custom filter times on order), and the square form factor allows for easy packaging in OEM and end-user assemblies. The Model 84800 will drive signals over cable lengths of 300m. Distances between card and tilt sensor can be up to 100m. Use the 84800 signal conditioning card for peak performance with any of our 755 series, 756 Series, or Ceramic Miniature Tilt Sensors.
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.