Buhler PKE-511 Bedienungs- Und Installationsanleitung Seite 42

Model Overview
The PKE 5 Peltier cooler family includes several models which may be distinguished by two criteria:
1) Cooling capacity and maximum ambient temperature
2) Number of heat exchangers
These criteria can be specified in the model number as shown in the table below. Please extract the part
number for the cooler fulfilling your requirements from the type code on page 4.
Application:
Max. ambient temperature:
1 heat exchanger
2 heat exchanger
The general specifications can be found in the table below. On the next page are the
performance curves and the specifications for each cooler.
Description
The PKE coolers are controlled by a microprocessor.
The different operating characteristics of the heat
exchangers are established at the factory.
Menu-guided with three keys it is easily possible to
adapt settings to the specific requirements of any
application.
The outlet dew point can be set within a range of
36 - 68 °F. It is factory preset to 41 °F.
Warning limits for high or low temperature can be set
relative to the chosen outlet dew point
t
temperature the range is
t
For high temperature it is
both is 5 °F.
When the warning limits are exceeded (e.g. at start-
up), this is indicated by a flashing display and at the
status contact.
The status contact could be used to control the sample
gas pump so that the gas flow is turned on when the
cooler reaches the desired temperature.
DA 44 0012
10/2013
Page 2/4
104 °F
PKE 511
PKE 512
2nd no.=1
t
. For low
a
2 - 5 °F (minimum 34 °F).
a
2 - 13 °F. Factory preset for
a
Standard
122 °F
PKE 521
PKE 522
2nd no.=2
Technical Specifications for All Models
Ready for application
Ambient temperature
Factory set dew point
Protection class
Material of housing
Packing dimensions appr.
Weight including heat exch.(s)
at 24 V DC
Power supply
Power consumption
Status output
Electrical connectors
Standard applications
(PKE 511, 512, 521, 522)
3rd no.=1
3rd no.=2
after max. 10 Minutes
41 - 104 °F/ 122 °F
41 °F
IP 20
Stainless steel
13.8" x 8.7" x 8.7"
approx. 17 lb
approx. 13 lb
115 V AC, 230 V AC
or 24 V DC, 50/60 Hz
max. 120 VA
max. 230 V AC, 150 V DC
2A, 50 VA, dry
Potential-free
Plugs: DIN 43650