19
testo 312
Technical data
testo 312-2
Measuring range* ±40 hPa ±200 hPa
Accuracy** <3.00 hPa ±0.03 hPa ±0.5 hPa (0 to 50 hPa)
>3.00 hPa ±1.5% of m.v.±1,5% of m.v. (>50 hPa)
Resolution ±0.01 hPa ±0.1 hPa
Alarm limit -0.01 to -40 hPa 0.1 to 200 hPa
Adjustment step 0.01 hPa 0.1 hPa
Alarm display Audible and optical
Max. overload 1 bar
Differential pressure measurement
Draught (testo 312-2 only)
testo 312-2
Measuring range* ±40 hPa
Accuracy** <3.00 hPa ±0.03 hPa
>3.00 hPa ±1.5% of m.v.
Resolution ±0.01 hPa
Alarm limit -0.01 to -40 hPa
Adjustment step 0.01 hPa
Alarm display Audible and optical
Max. overload 1 bar
testo 312-3
Measuring range* ±300 hPa ±6000 hPa
Accuracy** ±0.5 hPa <50 hPa ±4 hPa <400 hPa
±1.5% of m.v. ≥ 50 hPa ±2% of m.v. 400-2000 hPa
±4% of m.v. >2000 hPa
Resolution ±0.1 hPa ±1 hPa
Alarm limit 0.1 to 300 hPa 1 to 6000 hPa
Adjustment step 0.1 hPa 1 hPa
Alarm display Acoustic and optical
Max. overload 8 bar
Δ
P
General Technical data for testo 312-2 and testo 312-3
Storage temperature: -20 to +60 °C
Operation temperature: +5 to +45 °C
Dimensions: 215mm x 68mm x 47mm
Weight: Approx. 400 g
* Measuring instrument is temperature-compensated
** Accuracies do not apply in connection with pressure transducers
0554.3159 and 0554.3168
Warranty
Instrument: 2 years
Probes: 1 year
Accessories 6 months
Printer 1 year (excluding printing mechanism)
w ww . . co m
information@itm.com1.800.561.8187
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