Vaisala HMT120 User Manual

Also see for HUMICAP HMT120 Series: Quick guide Quick guide

Contents

Vaisala HMT120 User Manual Manual pdf 62 page image

4. Press READY when the reading has stabilized in the LiCl salt chamber (can take 30minutes or more). You can follow the stabilization from the GRAPH display.5. Remove the probe from the LiCl salt chamber and insert the probe head into the NaCl saltchamber.6. Press READY when the reading has stabilized in the NaCl salt chamber (can take 30minutes or more). You can follow the stabilization from the GRAPH display.7. Confirm the adjustment by pressing YES (by pressing NO you return to adjustment modedisplay and no changes are made).8. The adjustment is done. Press BACK and EXIT to return to the basic display.9. Turn off the MI70 and detach the connection cable.6.3.5 Temperature Field Check and Adjustment Using aCalibrated Reference ProbeComplete the steps listed in Adjusting RH and T with MI70 Hand-Held Indicator(page 56) before continuing with this adjustment option.1. Check that the probes are located in equal conditions and wait until the readings havestabilized (can take 30 minutes or more). If you are close to the probes, do not breathe intheir direction.2. Press ADJUST to continue adjusting.3. Choose To same as THI/II from the MI70 adjustment menu and press SELECT. MI70automatically recognizes which port the HMP70 series probe is connected to.4. Press YES to confirm the adjustment.If the temperature difference between the reference probe and thetransmitter is too large, the adjustment cannot be done (MI70 notifies you ofthis). The available reserve for T adjustment of the transmitter depends onthe initial temperature calibration of the unit.5. The adjustment is done. Press BACK and EXIT to return to the basic display.6. Turn off the MI70 and detach the connection cable.6.4 Adjustment with HMI41You can check and adjust the transmitter's relative humidity measurement with the HMI41indicator and HMP41/45/46 probes (requires the HMI41 connection cable (Vaisala order code:25917ZZ)).HMT120 User Guide M211244EN-C60