Precision Digital Barometric Altimeter / Barometer
The MicroTim™ Altimeter was born of a need for a general purpose low-cost, standalone, reliable, durable and accurate altimeter for recreational sports such as snowmobiling and hiking.
Here are a few of the most frequently asked questions we receive regarding MicroTim...
WHAT IS THE ACCURACY OF THIS DEVICE?
MicroTim has an ABSOLUTE accuracy (altitude above sealevel mode ASL) of ±10ft from –2000 to +20000 ft between typical operating temperatures of 10C (50F) to +40C (104F). This is mostly due to the fact that the barometric pressure window adjusts in increments of 0.01 inches of mercury (about 9.3 feet at sealevel), and a small amount of drift over the above temperature range.
MicroTim has a RELATIVE accuracy of ±2ft ( ground-level mode AGL) at any constant temperature and barometric pressure. For example, MicroTim is zeroed on the ground, then used successfully to measure the relative heights of towers, trees, hills, buildings, etc. to a high degree of accuracy. It is an extremely sensitive device.
YOU OFFER A VERSION (MICROTIM-SP) THAT CONNECTS TO A STATIC PORT. WHAT IS A STATIC PORT?
A static port is an air connection. This connects to a ‘static system’ where available. It is a method of providing the true ambient air pressure to the instruments, independent of the speed of the vehicle. Air rushing over a vehicle can form a vacuum, skewing the instrument readings. Any device (such as MicroTim-SP) connected to this ‘static system’ will not be affected by the speed of the vehicle.
DO I NEED A STATIC PORT?
If you currently have a static system, you should use MicroTim-SP. MicroTim-SP has the ability to be connected to this system. If you are using MicroTim in a slower vehicle, or the vehicle does not have a static system, there is no reason to spend the extra money.
DOES MICROTIM HAVE A BACKLIGHT FOR NIGHT VIEWING?
No. MicroTim is intended to be completely independent of external power sources, and to last for MONTHS on a single battery. Backlights consume far too much power to be accommodated here. However, the display requires only very dim light to view.
I CAN BUY A HANDHELD GPS OR WRISTWATCH FOR THIS PRICE THAT DISPLAYS ALTITUDE. WHY BUY MICROTIM?
NO affordable gps unit EVEN COMES CLOSE to the accuracy of MicroTim, and even if you were to spend thousands on a high-res gps, they would take a VERY LONG TIME to get a reading. MicroTim updates almost instantly. It will keep up with an analog altimeter. No gps or wristwatch will do this. None of them.
Also, our displays are LARGE and each unit is individually calibrated in a pressure/vacuum chamber.