Endress+Hauser RMS 621 - Page 61

RMS 621 10 Technical data
Endress+Hauser 61
Arithmetic unit
10.0.5 Installation conditions
Installation instructions Mounting location
In the cabinet on DIN rail EN 50 022-35
Orientation
no restrictions
10.0.6 Environmental conditions
Ambient temperature -20 to 60 °C
Storage temperature -30 to 70 °C
Climate class As per IEC 60 654-1 Class B2 / EN 1434 Class ’C’
Electr. safety As per EN 61010-1: Environment < 2000 m above N.N.
Humidity As per IEC 62-2-30 / EN 1434-4
Max. water content Condensation permissable
Protection class • Basic unit: IP 20
• Remote operating and display unit: IP 65
Electromagnetic compatability
Interference emission
EN 61326 Class A
Interference immunity
– Power failure: 20 ms, no influence
– Start current limitation: I
max
/I
n
≤ 50% (T50% ≤ 50 ms)
– Elektromagnetische fields: 10 V/m as per IEC 61000-4-3
Medium Variable Range
Water
Temperature measuring range 0 to 300 °C (32 to 572 °F)
Temperature differential range DT 0 to 300 K
Error limit for DT 3 to 20 K < 2.0% of measured value
20 to 250 K < 0.3% of measured value
Arithmetic unit accuracy class Class 4 (as per EN 1434-1 / OIML R75)
Measurement and calculation interval 250 ms
Steam
Temperature measuring range 0 to 800 °C (32 to 1472 °F)
Pressure measuring range 0 to 1000 bar
Measurement and calculation interval 250 ms