DSS70A is a portable sampling system for taking gas samples from hot, dirty, or pressurized processes. The gas collecting system is built in the briefcase including the DM70 meter. The system consists of a sample pump that draws out the sample gas, a filter to clean the sample from particles (> 7µm), and a sample valve and flowmeter to adjust the flow rate.
The sample gas going into the system must meet the following requirements:
- The temperature must be < 40 ˚C (104 ˚F). Thus, when using the PTFE tube of 2 meters (provided), the temperature of the process gas should be less than 200 ˚C (392 ˚F). When the temperature of the sample gas is over 200 ˚C, a stainless steel tube (not provided) should be used.
- The sample gases must be: Air, N2, non-toxic gases, inert, non-flammable gases.
- If the sample is taken from a pressurized process (1.2 ... 20 bar), the sample pump must be turned off and the tube from the flowmeter to the pump must be detached.
The DSS70A sampling system can be ordered from Vaisala separately or in connection with the DM70 meter.
- 1
- Fuses
- 2
- Inline filter (7 µm)
- 3
- MI70 recharger adapter
- 4
- Pump on/off
- 5
- MI70 indicator
- 6
- Sample valve
- 7
- Sampling tube
- 8
- Sample gas inlet and outlet
- 9
- Flowmeter
- 10
- Detach this tube when sampling from pressurized processes