Measuring Range; Output Signal - Endress+Hauser Flowphant T DTT31 Technical Information

Measured variable

Measuring range

Output signal

Signal on alarm
Load
Range of adjustment
4
segment LC display with large bargraph. Configuration and visualisation via RS232 interface and
ReadWin 2000 PC operating software.
o Universal Graphic Data Manager Ecograph T, Data logger Minilog B:
If you would like to read off the instantaneous value of the temperature not only locally, but also record,
analyze and display it e.g. directly from a control room or in the PC network, then the following devices
are suitable:
• Universal Graphic Data Manager Ecograph T
144 x 144 mm (5.67 x 5.67 in) panel mounted housing for electronic acquisition, display, recording,
analysis, remote transmission and archiving of analog and digital input signals. Multichannel data
recording system with multicoloured TFT display (145 mm (5.7 in) screen size), galvanically isolated
universal inputs (U, I, TC, RTD, pulse, frequency), digital inputs, transmitter power supply, limit relay,
communication interfaces (USB, Ethernet, optional RS232/485), 128 MB internal memory, external
SD card and USB stick. The Field Data Manager Software (FDM) supports data analysis at the PC;
configuration is done via FieldCare or the integrated web server.
• Data logger Minilog B
Battery powered measured value collector with 2 input channels for storing analog and digital
values. Internal memory 128 kB for max. 84000 measured values. Configuration and visualisation
via RS232 interface and ReadWin 2000 PC operating software. Optionally with telealarm function.
Input
• Flow velocity of liquid media (calorimetric measuring principle)
• Temperature (RTD), optional for two switch outputs or additional analog output
• Flow: 0.03 m/s to 3 m/s (0.1 to 9.84 ft/s), as relative value between 0 and 100%; maximum display
resolution: 1%
• Temperature: -20 °C to +85 °C (-4 to +185 °F); display resolution: 1 °C (1 °F)
Output
DC voltage version: (short-circuit proof version)
• 1x PNP switch output (flow) or
• 2x PNP switch outputs (flow or temperature, adjustable) or
• 1x PNP switch output and 1x 4 to20 mA output, active (flow or temperature, adjustable)
The analog output reads out the measured flow rate as relative value in percentage of the
adjusted measuring range.
Signal on alarm as per NAMUR NE43
• Underranging: Linear drop to 3.8 mA
• Overranging: Linear rise to 20.5 mA
• Sensor break; sensor short-circuit:
≤ 3.6 mA or ≥ 21.0 mA (at settings ≥ 21.0 mA, 21.7 mA output is guaranteed)
• Switch outputs: at safety condition (switch open)
Max. (V - 6.5 V) / 0.022 A (current output)
power supply
• Switch output
Switch point (SP) and switchback point (RSP) in increments of 1% with min. hysteresis of 5%
• Damping: freely adjustable: 0 = off (no damping) or 10 to 40 s in increments of 1 second
• Unit: %, optional °C, °F (with two outputs and temperature monitoring)
DTT31, DTT35
Endress+Hauser