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Summary of Contents for Pfeiffer Vacuum APR 250
- Page 1 A P A S S I O N F O R P E R F E C T I O N APR 250, APR 260, APR 262, APR 265, APR 266, APR 267 Compact Piezo Gauge Operating Instructions...
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Page 2: Product Identification
The Compact Piezo Gauges have been designed for vacuum measurement in a pressure range of 0.1 hPa … 5500 kPa, depending on the configuration. The gauges can be used with a Pfeiffer Vacuum measurement unit for compact gauges or with another evaluation unit. -
Page 3: Table Of Contents
1.4 Liability and Warranty 2 Technical Data 3 Installation 3.1 Vacuum Connection 3.2 Electrical Connection 3.2.1 Use With a Pfeiffer Vacuum Measurement Unit 3.2.2 Use With Another Evaluation Unit 4 Operation 5 Maintenance 5.1 Aligning the Gauge (Zero Alignment) 5.2 Cleaning the Gauge 5.3 Troubleshooting... -
Page 4: Safety
Pass on the safety information to other users. 1.4 Liability and Warranty Pfeiffer Vacuum assumes no liability and the warranty becomes null and void if the custodian or third parties • disregard the information in this document •... -
Page 5: Technical Data
16.0 ... 30.0 VDC (max. ripple 1 V Electrical connection Hirschmann compact connector type GO 6, 6 contacts, pins Cable 5-pin plus screening Maximum cable length 50 m (0.34 mm² conductor cross section) BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... - Page 6 Dimensions [mm] ø33 ø33 G1/4" 4 VCR male DN 16 ISO-KF DN 16 CF-F Weight 120 g (ISO-KF flange and G¼") 150 g (CF-F flange) 200 g (4 VCR flange) BG 5035 BEN / B (2014-08) APR 250 ... 267.oi...
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Page 7: Installation
Use the type of clamps which can only be opened and closed by means of a tool (e.g. hose clip clamping ring). BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... -
Page 8: Electrical Connection
1.0 V for the maximum admissible cable length). Procedure Prepare the connection socket (ordering number → 14). BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... - Page 9 Incorrect connection, incorrect polarity, or inadmissible supply voltages can damage the gauge. Reassemble the connection socket. Plug in the connection socket. Secure the connector on the gauge with the screw. BG 5035 BEN / B (2014-08) APR 250 ... 267.oi...
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Page 10: Operation
2 and 3 (→ Appendix for the relationship between the measuring signal and the pressure). The measuring signal is not dependent on the type of gas being measured (absolute pressure measurement). BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... -
Page 11: Maintenance
Loosen the union nut. • Lift the connection terminal. Evacuate: p << 0.1 hPa Correct alignment: Display = 0 (U = 1 V). – Reassemble the gauge in reverse order. BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... -
Page 12: Cleaning The Gauge
5 minutes. Pour the alcohol out of the measuring chamber. Allow the measuring chamber to dry for at least 10 minutes. Reinstall the gauge (→ 7). BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... -
Page 13: Troubleshooting
When handling vacuum components, take appropriate measures to ensure cleanliness and prevent damages. Procedure Deactivate the gauge. Unplug the connector. Remove the gauge from the vacuum system. BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... -
Page 14: Accessories
Place the protective cap. 7 Accessories Ordering number Connection cable to Pfeiffer Vacuum measurement unit for Compact gauges PT 448 250-T PT 448 251-T 10 m PT 448 252-T Connection socket, Hirschmann B 4707 283 MA GO 6 WF, 6-pin, angled, female... -
Page 15: Appendix
HG mbar 1×10 0.75 1×10 1×10 1×10 0.01 1×10 0.01 1×10 7.5×10 1×10 0.75 0.01 1×10 Torr 1.332 1.332×10 133.32 1.3332 0.1332 mm HG 1 Pa = 1 N/m BG 5035 BEN / B (2014-08) APR 250 ... 267.oi... - Page 16 A P A S S I O N F O R P E R F E C T I O N Pfeiffer Vacuum stands for innovative and custom Vacuum solutions vacuum solutions worldwide, technological perfection, from a single source competent advice and reliable service.
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