D P I 2 7 0 / 2 8 0 S e r i e s
Digital Process Indicators
g
GE Druck
High accuracy 0.01% F.S.
Wide range of process measurements
Extensive range of programmable features
Built-in sensor energisation
RS 232/485 and analogue interfaces
IP65 sealed front panel
D P I 2 7 0 / 2 8 0 S e r i e s
Digital Process Indicators
Intelligent Monitoring
The versatile DPI 270 (miniature) and DPI 280 (general) series of digital process indicators are “smart” instruments for use with a wide range of process sensors and signal inputs.
When used with the Druck range of pressure transducers or transmitters, a direct reading in pressure is provided. The DPI 284/5 internal pressure sensor can be supplied up to 60 bar or external pressure sensor up to 700 bar . Direct input of thermocouples and PT 100 resistance thermometers is available for temperature monitoring.
Powerful application oriented software features enable the DPI 270/280 series to be utilised for all measurement parameters and sensor types, making these panel meters suitable for many process applications.
Process functions
Alarms
Up to 4 open collector or 2 x SPST alarms are available:
High or low, low with disable during start-up, on/off controller with direct or reverse action, high or low deviation. Alarm features include: Adjustable on/off delay in seconds, adjustable hysteresis,
latching: non/manual reset/fail-safe. Operator adjustable set-point.
Peak/valley detection
Configurable functions allow detection of peak and/or valley. Operator access to view and reset.
Dual scaling (DPI 28X only)
Measurement can be displayed in either of two scale units (e.g. bar and psi). Each scale can have different formats and resolution. Toggle between the two scales by assigning an operator function key.
Tare and gross/nett functions
Tare off the current displayed reading and toggle between the gross and nett measurement values by assigning operator function keys.
Analogue output
For the DPI 27X, this option is programmable for 0/4-20mA,
0/1-5V or 0-10V. For the DPI 28X it is available as 0/4-20mA, 0-2V, 0/1-5V or 0-10V. Output is proportional to display reading, net and peak/valley or unlinearised input.
Serial communications (DPI 28X only)
Optional, isolated, serial communications interface for full access to all instrument functions and features. Dual port RS 232 (for multi-drop connection) or twisted pair RS 485 (for distributed multi-drop operation).
Printer Output (DPI 27X only)
Optional isolated RS232 printer output. Front key single print or continuous printing operation.
Password protection and calibration locking
Instrument configuration can be protected by a 4 digit password. Calibration data can be locked to guarantee calibration certificates.
Linearisation
The DPI 28X has 17 calibration correction points. This provides a powerful scaling facility for sensor linearity improvement and non-linear scaling for applications such as flow and tank volume measurement. In addition, the DPI 270/271 has ‘square root’ capability.
Infra Red Pen and MLink (DPI 27X only)
Windows based MLink software configures the DPI 27X via an RS232 link /infra red pen. Fast and simple set up, ideal for multiple configurations.
Typical Installations
The DPI 270/DPI 280 series can be used simply on the benchtop, rack mounted into an indication bank (below) or even trolley mounted for portable workshop applications (above).
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