Transmitter Features and Configuration Scheme
Measurements with RTDs
MinIPAQ-H accepts inputs from standardized Platinum RTDs, Pt100, acc. to IEC 751 (α = 0.00385) and Pt100 acc. to JIS 1604 (α = 0.003916). 3-wire connection is used.
Measurements with thermocouples
MinIPAQ-H accepts inputs fom 11 types of standardized thermocouples.
For T/C input, the CJC (cold junction compensation) is fully automatic, by means of an accurate measurement of the terminal temperature. Alternatively, the CJC can be disabled.
Sensor failure monitoring
MinIPAQ-H monitors sensor break and short-circuit and forces the output signal upscale or downscale (selectable), when any sensor lead is broken, disconnected or short-circuited. The sensor monitoring can be switched off. The monitoring is furnished with a pulsed excitation current. This eliminates the voltage drop in the lead wires (giving a measuring error), caused by standard DC excitation current.
Power supply
MinIPAQ-H is loop-powered and will work on voltages down to 8 VDC, thus giving good margins for high loads in the current loop. Reversed polarity will not damage the transmitter.
Warranty
MinIPAQ-H is covered by a 5-year limited warranty.
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