Lake Shore Model 340 Temperature Controller User’s Manual
3-4
Installation
3.1.5.4
Recommended First Aid
Every site that stores and uses LHe and LN
2
should have an appropriate Material Safety Data Sheet (MSDS)
present. The MSDS may be obtained from the manufacturer/distributor. The MSDS specifies the symptoms of
overexposure and the first aid to be used. A typical summary of these instructions is provided as follows.
If symptoms of asphyxia such as headache, drowsiness, dizziness, excitation, excess salivation, vomiting, or
unconsciousness are observed, remove the victim to fresh air. If breathing is difficult, give oxygen. If breathing
has stopped, give artificial respiration. Call a physician immediately.
If exposure to cryogenic liquids or cold gases occurs, restore tissue to normal body temperature (98.6 °F) as
rapidly as possible, then protect the injured tissue from further damage and infection. Call a physician
immediately. Rapid warming of the affected parts is best achieved by bathing it in warm water. The water
temperature should not exceed 105 °F (40 °C), and under no circumstances should the frozen part be
rubbed, either before or after rewarming. If the eyes are involved, flush them thoroughly with warm water for
at least 15 minutes. In case of massive exposure, remove clothing while showering with warm water. The
patient should not drink alcohol or smoke. Keep warm and rest. Call a physician immediately.
3.2 REAR PANEL DEFINITION
This paragraph provides a summary of Model 340 rear panel connections. See Figure 3-2.
CAUTION
l
Verify that the AC Line Voltage shown in the window on the fuse holder corresponds to that
marked on the rear panel, and that both these settings are appropriate for the intended AC power
input. Also remove and verify the proper fuse is installed before inserting the power cord and
turning on the instrument.
l
Always turn off the instrument before making any rear panel connections. This is especially critical
when making sensor to instrument connections.
DIGITAL I/O
WARNING
ANALOG
OUT 1
ANALOG
OUT 2
NO USER SERVICEABLE PARTS INSIDE. REFER
SERVICING TO TRAINED SERVICE PERSONNEL.
SERIAL I/O
120
IEEE-488 INTERFACE
S
H1 AH1 T5 L4 SR1 RL1 PP0 DC1 DT0 C0 E1
RELAYS
NC C NO NC C NO
LO
HI
INPUT A
INPUT B
HEATER FUSE
2.5 AMPS
HEATER OUTPUT
SHIELD
LO
HI
DATA CARD
FUSE
DATA
-10% +5%
50-60 Hz
190 VA MAX
LINE
100 / 120
2.0 A
.25x1.25in T
220 / 240
1.0 A
5x25mm T
l+
V+
l-
V-
l+
V+
l-
V-
CAUTION: POWER OFF TO MATE PROBE
11
1.
Line Input Assembly ................................................. Paragraph 3.3
2. DATA
CARD
Slot...................................................... Paragraph 8.4
3. IEEE-488
INTERFACE
Connector ........................... Paragraph 9.1 and Figure 10-8
4. SERIAL
I/O
Connector ............................................. Paragraph 9.2 and Figure 10-2
5.
DIGITAL I/O Connector ............................................ Paragraph 3.7 and Paragraph 7.2
6.
RELAYS LO and HI Connector ................................ Paragraph 3.8
7.
ANALOG OUT 1 and 2 Connectors ......................... Paragraph 3.6 and Paragraph 7.1
8.
Sensor INPUT A and B Connectors ......................... Paragraph 3.4
9. Option
Cutout ........................................................... Paragraph 11.1
10. Loop 1 HEATER OUTPUT Banana Jacks ............... Paragraph 3.5
11. Loop 1 HEATER FUSE ............................................ Paragraph 3.5.4
Figure 3-2. Model 340 Rear Panel