Endress+Hauser RIA15 - Technical Data; Input; Power Supply; Performance Characteristics

RIA15 Technical data
Endress+Hauser 51
14 Technical data
14.1 Input
Voltage drop
Standard device with 4 to 20 mA communication ≤ 1.0 V
Device with HART
®
communication ≤ 1.9 V
Display lighting additionally 2.9 V
HART
®
input impedance
Rx = 40 kΩ
Cx = 2.3 nF
Measured variable The input variable is either the 4 to 20 mA current signal or the HART
®
signal.
HART
®
signals are not affected.
Measuring range 4 to 20 mA (scalable, reverse polarity protection)
Max. input current 200 mA
14.2 Power supply
Supply voltage The display unit is loop-powered and does not require any external power supply. The
voltage drop is ≤1 V in the standard version with 4 to 20 mA communication, ≤1.9 V with
HART
®
communication and an additional 2.9 V if display lighting is used.
14.3 Performance characteristics
Reference operating
conditions
Reference temperature 25 °C ±5 °C (77 °F ±9 °F)
Humidity 20 to 60 % relative humidity
Maximum measured error
Input Range Measured error of measuring range
Current 4 to 20 mA
Over range up to 22 mA
±0.1 %
Resolution Signal resolution > 13 bit
Influence of ambient
temperature
< 0.02 %/K (0.01 %/°F) of measuring range
Warm-up period 10 minutes