Perma Pure BALDWIN 225CE, Instruction Manual

Page: 14 / 44

Section I: “New Jersey” Thermocouple Option 14
I: “N
EW
J
ERSEY
” T
HERMOCOUPLE
O
PTION
Some air quality management districts (e.g., those in New Jersey and Southern
California) require temperature measurement of the gas stream at the outlet of the
last heat exchanger on the cooler. Baldwin offers a 1/32-inch diameter hypodermic-
style type K thermocouple that can be inserted into a special heat exchanger (i.e., it
has a small port for insertion of the thermocouple) so the actual sample dew point
temperature can be measured. This is sometimes referred to as the New Jersey
thermocouple outlet temperature option.
The Model 225 has two 5” heat exchangers which can be operated in series (single-
stream) or in parallel (dual-streams). When run in series, the second heat
exchanger will have a New Jersey thermocouple to sense the temperature inside the
heat exchanger (upgrade option: 4C-NJ/K-5). A quantity of two (2) 4C-NJ/K-5 are
required for each cooler when used for dual-streams. In the part number, the “NJ”
identifies the upgrade for a NJ type thermocouple. The “K” identifies the
thermocouple itself as a type “K” thermocouple. The “-5” is the height of the heat
exchangers.
In addition, Baldwin offers an optional temperature transmitter board for signal or
voltage temperature output. This board has one input and two outputs per channel.
The input is for the type K thermocouple. The first output is an analog voltage output
that can be configured for either 0-2.5vdc or 0-10vdc for a 0
°
C (32
°
F) to 25
°
C (77
°
F)
temperature range. The second output is a 4-20mA for the same temperature
range.
A single-channel NJ thermocouple transmitter board (3CCB-012) is used when the
Model 225 is operated in series. A dual-channel NJ thermocouple transmitter board
(3CCB-013) - one channel per gas stream - is used when the Model 225 is run in
parallel.
Model 225 New Jersey Thermocouple Option
Part No. Description
4C-NJ/K-5 Heat exchanger upgrade to include NJ thermocouple port
3CXS-002 Heat exchanger, 5” SS w/ NJ thermocouple port
3CXD-002 Heat exchanger, 5” Durinert
®
w/ NJ thermocouple port
3CXK-002 Heat exchanger, 5” Kynar
®
w/ NJ thermocouple port
3CCB-012 Temperature transmitter board, single stream
3CCB-013 Temperature transmitter board, dual-stream
3KTC-001 Thermocouple, Type K, replacement kit