RMS 621
2 Endress+Hauser
Overview
Using the following overview the unit can be swiftly and easily commissioned:
Short form operating instructions
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Caution!
The information contained in these Operating Instructions serves as a guide to help you commission
your device easily, i.e. the most important settings are listed here but special functions (e.g. Tables,
Corrections etc.) are not.
Configuring a measurement - Set-up example
Example 1: Steam heat (or steam mass)
Sensors: DPO10 (orifice), Cerabar T, TR 10
1. Connect device to the power source (terminal L/L+, 220 V)
2. Press any key → Menu → Setup (all parameters)
3. Basic set-up
Date-time (set up date and time) Æ
Z
4. Flow inputs (flow 1)
Flow meter: Differential pressure
Diff. device: Orifice corner tap
Signal: 4 to20 mA
Curve: linear (also set up linear curve at the DP transmitter)
Terminals: Select A10 and connect DP transmitter to terminals: A10(-)/82(+) (because of
passive signal)
Set up start- and end-value (in mbar!)
Tube data: enter internal tube diameter and diameter ratio (ß) as found on the maufacturers
data sheet.
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Caution!
If tube data is not known, for flow meter: operating volume
Curve: linear (set up square rooted curve on the DP transmitter)
Set up start- and end-values einstellen (m
3
/h)
5. Pressure input (Pressure 1)
Signal type: e.g. 4 to 20 mA
Terminals: Select A110 and connect Cerabar T to terminals: A110(-)/A83(+) (passive signal)
Type: Select absolute (-pressure measurement) or relative (-pressure measurement)
Set up start- and end-values of the presuure transmitter Æ
Z
Safety notes Page 8
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Installation Page 11
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Electrical connections Page 13
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Human interface Page 22
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Commissioning Page 29
Quick SET-UP - Fast entry into unit set-up for standard operation.
Unit set-up - explanation and application of all unit functions with the relevant values
and settings.
Application examples - Unit set-up in connection with an application example.
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