Measure differential pressure with high levels of accuracy using this Martindale pressure meter!
Capable of measuring pressure in eight different units (mmH20, mmHg, psi, inH20, inHg, hPa, mbar and Pa) the PM85 can measure pressure up to 1.45psi (100mbar) or the equivalent range for other units (see tech specs table for full list of ranges). It is also possible to use the PM85 to measure air speed, but this requires an optional pitot tube (sold separately - please call for inquiries).
As well as standard measurements, the PM85 can calculate MAX, MIN (or both values together) and average measurements so you can get an idea of what measurements are happening over a time period.
All specified accuracies are at 23°C ± 5°C, <70% RH for 1 year
Temperature coefficient: 0.1 x (specified accuracy) per °C (0 to 18°C, 28 to 50°C)
Pressure | ||
---|---|---|
Unit of Measurement | Range | Resolution |
mmH20 | 0 to 1019.7 | 0.1 |
mmHg | 0 to 75 | 0.01 |
psi | 0 to 1.45 | 0.001 |
inH20 | 0 to 40.14 | 0.01 |
inHg | 0 to 2.953 | 0.001 |
hPa | 0 to 100 | 0.01 |
mbar | 0 to 100 | 0.01 |
Pa | 0 to 10000 | 1 |
Accuracy | 0 to 0.3 hPa ± 0.03 hPa 0.3 to 1 hPa ± 0.05 hPa 1 to 100 hPa ± (0.1 hPa+1.5% of reading) 0 to 3 mmH2O ± 0.3 mmH2O 3 to 10.2 mmH2O ± 0.5 mmH2O 10.2 to 1019.7 mmH2O ± (1.02 mmH2O + 1.5% of reading) |
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General Specifications | ||
Display | Liquid Crystal (LCD) | |
Measurement Rate | Twice per second | |
Power | 2 x 1.5V AAA alkaline batteries (IEC LR03, NEDA 24A) | |
Continuous Operating Time | 85 hours typical | |
Low Battery Indicator | Symbol displayed when battery voltage drops below operating level | |
Auto Power Off | Approx 10 minutes | |
Dimensions (L x W x D) | 132.9 x 50.9 x 24.7mm | |
Weight | 113g approx incl. batteries | |
Environmental | ||
Operating Environment | 0 to 50°C at <70% RH | |
Storage Environment | -20 to 60°C, <80% RH with batteries removed |
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EMC | Conforms to BS EN61326-1 |