Hach 29971-72, User Manual

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1. Carefully put the flow chamber on the sensor head in the sensor holder (E). Make sure not to
touch the membrane or damage to the membrane can occur. Tightly screw the sensor collar to
attach the flow chamber into its location.
2. Put the LEMO plug that is on the end of the sensor cable into the sensor socket of the indicating
instrument.
3. Connect approximately 25 cm of plastic tube from the top of the piercing head (A) to the inlet
Swagelok fitting on the flow chamber.
4. Connect the gas supply as follows:
a. Connect the gas supply to the 6 mm brass Swagelok gas supply connector assembly (D) on
the sensor holder (E) with a nylon tube.
b. Connect the brass Swagelok gas supply to the lower piercing column Swagelok assembly (C)
with a nylon tube.
c. Use the knurled screw (B) on the same black block as the gas inlet port as a gas on/off valve.
Note: Use nitrogen or carbon dioxide as the forcing gas supply based on the beverage package application.
5. Make sure that all Swagelok fittings are tight.
Figure 4 EC/TC sensor sampler assembly
Assemble the LDO sensor
N O T I C E
If tubing replacement is necessary, make sure to use material of low gas permeability, such as flexible nylon,
PVC, or tygon for tube replacement. Do not use metal tubing or damage to the brass connectors can occur.
Refer to Figure 5 and do the steps that follow to assemble the system:
1. Install the U-shaped ring to hold the flow chamber on the correct position (D).
2. Put the flow chamber in the correct position (D). Make sure that the tubing points to the front.
Tighten the screws of the U-shaped ring to attach the flow chamber into its location.
3. Install the LDO sensor in the flow chamber. Tighten the screw in the collar on the LDO sensor to
the flow chamber.
English 9