Thiết Bị Đo Lường Busch VACTEST DPP 400 / DPP 400 D Thiết Bị Đo Lường

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TECHNICAL DATA	VACTEST DPP 400	VACTEST DPP 400 D
Measurement principle	Piezoresistive / Pirani	Piezoresistive / Pirani
Materials exposed to vacuum	Stainless steel 1.4307, nickel, gold, silicon oxide, tungsten, glass	Stainless steel 1.4307, nickel, gold, silicon oxide, tungsten, glass
Filament material	Tungsten	Tungsten
Display	Without display	With display
Measurement range	1200–1 · 10⁻⁴ mbar	1200–1 · 10⁻⁴ mbar
Overpressure limit	4 bar abs.	4 bar abs.
Measurement uncertainty ( ) ( )	< 10% of reading (40–2 · 10⁻³ mbar)	< 10% of reading (40–2 · 10⁻³ mbar)
Repeatability of measurement ( ) ( )	±0.1% full scale (1200–40 mbar)	±0.1% full scale (1200–40 mbar)
Leakage rate	< 5 · 10⁻¹⁰ mbar · l/s	< 5 · 10⁻¹⁰ mbar · l/s
Reaction time	< 40 ms	< 40 ms
Serial interface	RS485	RS485
Electrical connection	D-Sub, 15 poles, male	D-Sub, 15 poles, male
Supply voltage	20–30 V	20–30 V
Max. power consumption	2.5 W (relays)	2.5 / 0.8 W (relays / display)
Output signal	0–10 V, RS485	0–10 V, RS485
Setpoint relay	2 dry contacts	2 dry contacts
Relay contact rating	2A, 50 VAC / 2A, 30 VDC, max. 60 VA	2A, 50 VAC / 2A, 30 VDC, max. 60 VA
Operating temperature	+5 … +60 °C	+5 … +60 °C
Max. bake-out temperature	150 °C	150 °C
Protection class	IP40 (IP54 with appropriate D-Sub connector)	IP40 (IP54 with appropriate D-Sub connector)
Weight approx.	195 g	195 g
Dimensions (L x W x H)	45 × 66 × 99 mm	45 × 66 × 99 mm
Vacuum connection	DN 16 ISO-KF	DN 16 ISO-KF