Teledyne 3160 - Manual (Page 24)

3-6
3 Installation 3 Installation 3 Installation 3 Installation 3 Installation
TELEDYNE ANALYTICAL INSTRUMENTS
1. The sensor compartment is located in the lower right-hand corner of the
analyzer front panel. To remove the sensor compartment panel, loosen the
thumbscrews located left and right center of the panel.
2. Make sure that sample gas is flowing through the analyzer, then shut off
the flow completely. This insures that air does not diffuse into the analyzer.
3. Inside the compartment should be two (one) stainless steel cylindrical
sensor block(s), each with a clamp lever across the front. The bottom half
of the clamp face is bent outward. To release the clamp, pull the clamp
lever up and toward you slowly.
4. Releasing the clamp releases the stainless steel block cap on the bottom of
the sensor block. Pull the cap downward to remove it. There is a guide pin
to the rear of the sensor block that aligns the cap to the block.
Note: It is important to minimize the amount of time that the new cell is ex-
posed to air in order to reduce the time required for the reading to drop
to zero.
5. Remove the Micro-Fuel Cell from the plastic bag. The cell has a mesh
screen with a raised plastic dress ring on one side and flat gold contact
rings on the other. Place the screen side of the cell face down on the block
cap so that the dress ring locks onto the cap ridges and will not move side
to side. The gold contact rings will be facing up.
6. Carefully guide the sensor and cap into the block, putting the guide pin
through the hole in the back edge of the cap.
7. While holding the cap in place, squeeze the clamp down firmly until the
notches on the clamp lock onto the block side pins.
8. Immediately start the sample flow, and set to about 2 SCFH. The analyzer
now needs to be zeroed and calibrated.
3.6 Electrical Connections
All of the electrical connections are located on the analyzer back panel. The
analyzer is shipped with all of the electrical connections intact, with no assembly or
installation required. The power cord receptacle is located in the lower center of the
panel. The voltage selection terminal and the fuse block are in the same fitting directly
above the power cord receptacle. There are four output signal connectors with screw
terminals in the upper right-hand panel. There are two wires per output with the polari-
ty noted below each. The five alarm circuit connectors, located in the lower center
right-hand panel, are screw terminals for alarm relay contacts. These five provide a set
of Form C contacts for the user. The contacts are capable of switching up to 3 am-
peres at 115 V ac into a resistive load.