CU-EMA+
Controller for heated line
Connection:
Cable clamps, cable cross-section 0.5…2.5 mm
²
Self-regulating heated line
Flow:
max. 115 VAC/230 VAC 1600 VA
cable clamps, cable cross-section 1.5…2.5 mm
²
Test gas solenoid valve
Flow:
Activated with customer power via 230 VAC relay (Attention: cannot be
activated with 115 VAC) or 24 VDC, cable clamps, cable cross-section
0.75…2.5 mm
²
9.4 Outlet
Two heat exchangers
Model CU-EMA+
Rated cooling capacity (at 25 °C)
110 kJ/h
max. ambient temperature
55 °C
Dew point fluctuations
static
in the entire specification range
± 0.1 K
± 1.5 K
Temperature difference between heat exchangers
< 0.5 K
Cooling capacity kJ/h
Ambient temperature °C
Remark: The limit curves for the heat exchangers MTV-2 and MTG-2 apply at a dew point of 50 °C. Depending on the installation
version, the cooling capacity curve may vary.
9.4.1 Heat exchanger description
The energy content of the sample gas and the required cooling capacity of the gas cooler is determined by three parameters: gas
temperature
ϑ
G
, dew point
τ
e
(moisture content) and volume flow v. The outlet dew point rises with increasing energy content of
the gas. The following limits for the maximum flow are specified for a standard operating point of
τ
e
= 40 °C and
ϑ
G
= 70 °C. The
maximum flow v
max
in Nl/h of cooled air indicated, so after moisture has condensed. Values may differ for other dew points and
gas inlet temperatures. However, the physical facts are so vast we decided to omit the illustration. Please contact our experts for
clarification or refer to our calculation programme.
9.4.2 Heat exchanger overview
Heat exchanger
2x MTG-2
2x MTV-2
2x MTV-2-I
2)
Version / Material
Glass
PVDF
Flow rate v
max
1)
210 Nl/h
190 Nl/h
Inlet dew point
τ
e,max
1)
70 °C
70 °C
Gas inlet temperature
ϑ
G,max
1)
140 °C
140 °C
Max. Cooling capacity Q
max
80 kJ/h
65 kJ/h
Gas pressure p
max
3 bar
2 bar
31
Bühler Technologies GmbH
BE440029 ◦ 10/2020
