Vaisala DM500 - Manual (Page 41)

Chapter 6 _____________________________________________________ Setting up for Operation
VAISALA _______________________________________________________________________ 39
NOTE
To avoid condensation into the internal gas tubes and sensor, stop
cooling water flow if measurement is stopped and T
d
of sample gas
may be higher than the cooling water temperature.
Connecting the Cooling Liquid
1
2
Figure 15 DMP501 Back Panel, Connectors for Cooling
Liquid
The following numbers refer to Figure 15 above:
1
= Water In (WI)
2 = Water Out (WO)
1. Remove the Swagelok fittings from Water In (WI) and Water
Out (WO) connections.
2. Attach the tubes (diameter of 8 mm) to the Swagelok fittings
(diameter of 8 mm or 5/16"). Plastic tubes are recommended.
3. Connect the water inflow tubing to the connector WI. And
similarly the water outflow tubing to connector WO. Reverse
water flow can be used as well.
4. Replace the Swagelok fittings to the back panel connectors.
5. Let the water flow with the flow rate of 5...20 l/min, temperature
of water shall be <+15 ºC (50 ºF). Check for leaks and tighten if
necessary.
Once the water tube connections have been tightened, the water tubing
should be disconnected from the Swagelok fittings.