YSI 5500D-1 - Manual (Page 17)

YSI 5X00
33
YSI 5X00
32
Figure 3.8
10. Reattach lanyard by placing lanyard at proper location of display board
panel. Make sure lanyard is fully seated on display panel boss to ensure
proper clearance when front panel is closed- figure 3.7.
11. Replace four screws to reattach display board panel to front panel enclosure
- figure 3.6.
12. Connect 5X00 display board to ribbon cable - figure 3.5.
13. Secure the 5X00 front panel to the frame using mounting screws. Follow
procedures provided at Close Front Panel - page 43 to secure 5X00 and
protect internal electronics.
14. Tighten the screws, securing the 5X00 to the panel.
Install the Weather Shield
Install the weather shield for outdoor installations. The weather shield can be used
with either a surface or rail mount. The weather shield kit (model number 6505)
includes a weather shield, u-bolts, pre-drilled metal plate, washers, and nuts.
1. First complete steps 1-2 under Surface Mount or steps 1-3 under Rail Mount
depending on the type of installation. Note: You may need to modify the
pre-drilled holes in the weather shield depending on the mounting location.
2. At step 3 (surface mount) or step 4 (rail mount), attach the weather shield
with the metal plate installed securely to the surface or rail. Figure 3.9 shows
the weather shield installed for a rail mounted 5X00.
3. Tighten the screws, securing the weather shield.
Figure 3.9
Step 2 Locate and Install Sensor(s)
Throughout the manual, the term “probe” refers to the end of the cable where the
sensor is located and the term “sensor” refers to the sensing portion of the cable/
probe assembly.
5X00 instruments can be configured with 1, 2, 3, or 4 dissolved oxygen (DO) sen-
sors. Auxiliary (aux) inputs 3, 4, 5 and/or 6 can be configured as temperature inputs.
YSI 5400 instruments can be configured to use a YSI 5422-X DO (polarographic)/
temperature sensor, a YSI 5421-X DO (galvanic)/temperature, and/or a YSI 5420-
X DO (galvanic) sensor assembly. YSI 5500 instruments are configured to use YSI
626250 ODO (Optical Dissolved Oxygen) sensors.
5400 instrument DO sensors require a properly installed membrane. The 5422 po-
larographic sensor uses either a blue (PE 2.0 mil) or gray (Teflon 2.0mil) membrane.
The 5420 and 5421 galvanic sensors use a 2 mil Teflon membrane. 5500 instruments
ODO sensors require a sensing cap. 5500 instrument sensor caps are factory cali-
brated with sensor cap coefficients. It is important to retain sensor cap coefficients
(provided by YSI) for the life of the sensor.
Temperature sensor(s) must use a 10K thermistor (at 25˚C). See Appendix 6 Alpha
A Curve - page 236.
Aux temperature sensors can be configured as the temperature source for DO systems
on YSI 5400 instruments. Aux temperature sensor(s) cannot be configured as DO
temperature sources on YSI 5500 instruments.
Installation and Wiring Installation and Wiring