Union Instruments CWD3000 EXP - Interfaces; Display Times for Heating Value Measurement; Gas Inputs; Process, Calibration, and Test Gas

Technical data
8
1.7 Interfaces
Interfaces:
RS232, Profibus, Fieldbus, Industr. Ethernet
Analog outputs:
3, 4 – 20 mA for heating value, Wobbe index and
density
Digital outputs:
3 relays
1.8 Heating value measurement display times
1
90% time:
CWD3000: ≤ 15 seconds
1.9 Gas inputs
Process gas:
1
Calibration inputs:
1, optional 2
Test gas input:
1, optional
Carrier gas input:
1, optional
Gas connections:
Compression fitting: 6 mm
1.10 Process gas, calibration gas and test gas
Calibration gas:
Dependent upon combustion gas
Calibration interval:
Dependent upon combustion gas
Calibration duration:
Process lasts up to 20 minutes,
gas flow approx. 10 minutes
Gas consumption:
Approx. 7 l gas per calibration
(dependent on the calibration gas)
Input pressure, max.:
Max. 500 mbar
Input pressure, min.:
20 mbar, dependent on the gas
1.11 Ignition protection gas
Ignition protection gas:
Compressed air, instrument air
Input pressure, max.:
5 bar
Input pressure, min.:
4.5 bar
Temperature, max.:
50°C
Consumption:
Max. 30,000 l/h under normal conditions
Operating pressure:
23 – 35 mbar
Operating pressure, min.:
23 mbar
Operating pressure, max.:
40 mbar
pre-purge volume, min.:
1020 l
1
The display times are measured from the time the new gas reaches the burner. Display times are
based on measurements with pure methane.