For other cable options, see Cables (page 19) and Spare parts and accessories (page 83).
The probe cannot be used with the MI70 handheld indicator or the HM40 meter
when the probe is in analog mode. To use the probe with MI70 or HM40, enable a
serial mode (for example, STOP) in Vaisala Insight software. Use Insight also to
return the probe to analog mode.
1. Connect the MI70 connection cable, the HM40 meter, or the USB cable to the HMP60/
HMP110 probe.
• With MI70: Connect the other end of the connection cable to the MI70 indicator.
• With Insight: Leave the other end of the USB cable unconnected at this point. You
can connect it to the PC after the stabilization period (step 4).
2. Remove the filter from the probe and place the probe in the reference environment. For
example, you can use a NaCl salt chamber (75 %RH) as the humidity reference.
3. Wait for 20 ... 40 minutes for the reading to stabilize. Do not touch the probe or breathe in
its direction during this time.
• If you are using the MI70 indicator or the HM40 meter, you can follow the stabilization
using the graph functionality.
• If you are using the USB cable, do not keep the cable connected to the PC during the
stabilization period for best calibration accuracy.
4. After the stabilization period:
• With MI70/HM40: Switch MI70/HM40 o and on to start a blank graph.
• With Insight: Connect the USB cable to the PC and start the Insight application.
5. Wait for 1 minute and make sure the graph showing the measurement reading is stable.
6. Check the measurement reading, and compare it with the reading shown by the humidity
or temperature reference.
More information
‣
Vaisala Insight software (page 31)
7.3
Adjustment procedure using serial line
(HMP110 and HMP113)
If you are adjusting a probe that is in the analog output mode, start the probe in
RS-485 mode. For instructions, see Accessing serial line command interface from
analog or Modbus mode (page 36).
HMP60 and HMP110 Series User Guide M211060EN-J
56
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