The SMAN3 includes a micron vacuum gauge, plus two additional features that are not available on other manifolds – a micron alarm and vacuum timer. The micron alarm enables technicians to set the alarm to a chosen micron level, and when the vacuum reaches that level, the alarm will sound, so techs can continue working without constantly checking the vacuum. The vacuum timer is useful to track how long a vacuum has been pulling because if it’s taking longer than a technician would expect, it may indicate hidden issues.
Field calibration of temperature and pressure is easy on both SMAN models. Quickly calibrate temperature by using the cal pots on the front of the SMAN and zero pressure to the atmosphere with the press of a button. Or for a more accurate pressure calibration, technicians can use a bottle of refrigerant and follow the “Test Pressure” procedure. Other handy features on the SMAN2 and SMAN3 include dual K-type thermocouple pipe clamp inputs, a large temperature and glare resistant backlit display viewable from 20’, extremely long battery life (500 hours for SMAN2 and 135 hours for SMAN3) with constant battery status, and 39 built in P-T charts. Plus the sturdy hook makes it easy to hang the manifolds while on the job or in the truck, and the padded nylon bag ensures techs don’t have to remove the hoses and clamps every time they complete a job.
“Because the results are digital, technicians get the answers they’re looking for quickly and accurately. They can easily match the target superheat to the actual superheat or check both superheat and subcooling at the same time, without any guess work or manual calculations,” stated Rey Harju, founder of Fieldpiece Instruments. "We’ve really covered all the bases with this one, and developed it from the inside out. The insides are a well-engineered manifold gauge for critical calculation, and the outside is a rugged body with a sturdy back hook and large screen that’s easy to read."
The SMAN2 digital manifold includes both wet and dry bulb thermocouples, and protective case. The SMAN3 digital manifold includes both wet and dry bulb thermocouples, a protective case, micron vacuum gauge, micron alarm, and two K-type pipe-clamp thermocouples.
-- Fieldpiece Instruments