GE Druck DPI 821/822

Thermocouple calibrator with optional loop calibrator

The GE Druck DPI 821 thermocouple calibrator measures or simulates thermocouple sensors. The DPI 821 is the ideal tool for checking probes, indicators, and controllers. The Druck DPI 822 thermocouple Loop Calibrator provides simultaneous T/C output and mA measurement for transmitter and loop maintenance.

Temperature Test and Measurement - DPI 821 Thermocouple Calibrator

The DPI 821's unique cold junction compensation virtually eliminates ambient temperature errors. Other advanced features of these T/C calibrators include step, ramp, scaling, maximum / minimum / average, and hold functionality to facilitate system checks and troubleshooting.

Temperature Instrumentation and Loop Maintenance - DPI 822 Thermocouple Loop Calibrator

The DPI 822 has a 24 V loop power supply to energize transmitters and control loops. These T/C loop calibrators feature an automatic switch test to capture open / closed trip values. This provides a fast and highly accurate "safety system" check. The DPI 822 can be switched into the loop when required by a HART digital communicator and avoids the inconvenience of carrying a 250 ohm resister.

Applications for the GE Druck DPI 821 Thermocouple Calibrator and DPI 822 Thermocouple Loop Calibrator

• Temperature test and maintenance
• Transmitter calibration
• Loop set-up and diagnostics
• Switch verification

IDOS "Plug and Play" Port

Every DPI 821 T/C calibrator and DPI 822 T/C loop calibrator has an IDOS (Intelligent Digital Output Sensor) compatible port for connecting remote IDOS measurement modules. These include pressure sensors with ranges available from 1psi to 10,000 psi. This feature provides users with a number of unique advantages, for example, a DPI 822 loop calibrator can become a fully functional pressure calibrator by adding a universal pressure module. IDOS measurement modules are interchangeable between any IDOS compatible instruments without calibration or set-up. They are true "plug and play" modules.