Our professional-grade calibration table accurately calibrates all types of broadband and short period seismometers and accelerometers.
Designed after Erhard Wielandt’s Lennartz CT-EW1 calibration table, our calibration table is lighter and motor-free requiring no power to operate. It is a little larger than a shoebox so is easily portable allowing you to calibrate your equipment wherever you are located; in the field, in the vault and in the laboratory.
The days of calibrating your sensors with heavy immobile workshop equipment are gone.
The table has micrometer precision with a displacement range capable of calibrating the instrument of your choice, and verifying the entire instrumentation chain.
For pricing and to find out more contact us to request a quote.
By Erhard Wielandt and modified by OSOP
Dial gauge has micrometer precision
Not required. People powered.
Tabletop: 248 x 248 mm
Height: 171 mm
Bridge: 248 mm wide x 503 mm long
Table: ~6.9 kilograms
Bridge: ~4.2 kilograms
~0.0025 – ~0.550 mm or more than enough to calibrate your instrument of choice
Details here, including Youtube how-to videos guide you through the entire process.
OSOPCAL: Software for determining the gain from calibration table experiments.
All products are shipped by INCOTERM DAP. The buyer assumes all responsibility for import duties and taxes.
1x Calibration Table with horizontal extension bridge
1x transport box
1x osopcal software for data processing
What is it?
A vertical single-step displacement tool.
Why is it useful?
A dial gauge with micrometer precision tells you exactly how much the sensor moved, a critical value when generating an instrument response file or confirming your existing instrument response file is still valid.
How does it work?
In the interest of improving the robustness and field readiness of the Wielandt calibration table, OSOP has removed all motorized parts, replacing the motor with a manual lever. NO gear boxes NO fuss and NO power supply.
Is it portable?
Yes, the OSOP Calibration Table was designed for the field and remote out-of-the-laboratory experiences.
Will it work with for my STS-2.5?
Yes, and your Nanometrics Trillium Compact, Nanometrics Trillium 120, STS-2, Metrozet, Reftek 151, Lennartz LE 3Dlite, Guralp CMG-3, … You name your favorite sensor and the calibration table will work.
Does it come with an extension bridge to calibrate the horizontal components?
Is it complicated?
Using the table is EASY. All of the complicity lies in the design- getting true vertical motion is tricky. But we sorted that out, so your job is as simple as moving a lever.
Can I build my own?
Absolutely, and we encourage it- see these instructions by Erhard Wielandt to build your own table out of plywood. But when you want commercial-grade precision, go OSOP.
Can I send my instrumentation to OSOP to be calibrated?
Yes! We will generate a new, up-to-date response file for your instrumentation (poles zeros, gain- the complete transfer function) and deliver it to you in RESP, dataless or inventory-xml formats compatible with Earlybird, Earthworm, ObSpy, Seisan and SeisComP.