TESTO 312-4, Instruction Manual

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3 Specifications
8
3.2. Technical data
Characteristic Values
Measuring ranges and
accuracies 0 to 3 hPa: ±0.03 hPa
3 to 40 hPa: ±1.5 % of m.v.
41 to 200 hPa: ±2 hPa
Intrinsic leakage
0.3 % pressure drop from test
pressure over a period of 1 minute
Permissible media Air, non-aggressive gases
Voltage supply 9 V monobloc (6LR61), alkaline
manganese or 12 V DC mains unit
Sensor interface Round 8-pin plug
PC interface Serial, connection line 0409 0178
Printer interface Infrared
Measurement data
memory
approx. 25000 readings
Battery running time in
continuous operation
with internal pressure
sensor 30 h with alkali manganese at 25 °C /
77 °F
Sensor piezoresistive
Storage/transport
temperature
-20 to 70 °C/-4 to 158 °F
Operating temperature 0 to 50 °C/32 to 122 °F
Weight (incl. TopSafe
and battery)
approx. 600 g/1 lb 5 oz
Housing material ABS
Dimensions (L x W x H) 219 x 68 x 50 mm/8.5" x 2.5" x 2"
Measuring rate
Auto: 1 sec to 24 h, quick: 0.04 sec
Adaption time 10 min
Refresh rate of display 2/sec, with rapid measurement: 4/sec
Warranty
24 months, warranty conditions: See
web page www.testo.com/warranty
EC Directive 2014/30/EC