Vaisala HMD20 Operation & User’s Manual

19165ZZ-U220en-1.1 Operating Manual 1996-08-29 5 • After having completed the calibration, press ON/OFF and disconnect the cable. If you prefer, you can change the HMI41 display to show the difference in the readings and then adjust the transmitter. To do this, press MODE when both readings are on the display and a text similar to ...

Vaisala HMD20 Operating Manual 19165ZZ-U220en-1.1 ii 1996-08-29 This page intentionally left blank. ...

Vaisala HMD20 Operating Manual 19165ZZ-U220en-1.1 2 1996-08-29 set °C If the basic settings of the HMI41 (display units, automatic power off function, display quantities and pressure) have to be changed, please refer to the HMI41 Operating Manual. Otherwise, press ENTER repeatedly until the following text appears: set The number on the first line ...

Vaisala HMD20 19165ZZ-U220en-1.1 Operating Manual 1996-08-29 3 2. CALIBRATION For a successful calibration, it is essential that the probe of the HMI41 and that of the transmitter are at the same temperature, and that the reference probe has been previously calibrated. Always allow enough time for the readings to stabilize. Note that the stabiliza ...

HMP130 Transmitters with Vaisala HUMICAP® Indicator HMI41 U220EN11 ...

Vaisala HMD20 Appendix 1 19165ZZ-U220en-1.1 2 1996-08-26 2. Calibration After having connected the cable, turn the HMI41 on and follow the instructions of the table below: DISPLAY WHAT TO DO PRESS: RH setminmax hyst hold Lo batHi Pabs Pa g/m T Td °C°F °C°F % The HMI41 has been turned on. Indication of the software version (if the version is 1. ...

19165ZZ-U220en-1.1 Operating Manual 1996-08-29 i Contents 1. INTRODUCTION ......................................................................................................................1 1.1 HMI41 with calibration option ......................................................................................1 1.2 Selecting the H ...

Vaisala HMD20 Operating Manual 19165ZZ-U220en-1.1 4 1996-08-29 offset gain test connector Figure 2.3 Calibration connector and potentiometers in the HMD 20/30UB/YB transmitters gain offset test connector Figure 2.4 Calibration connector and potentiometers in the HMW 20/30UB/YB transmitters 2.2 Calibration After having connected the cable, turn the ...

19165ZZ-U220en-1.1 Operating Manual 1996-08-29 1 1. INTRODUCTION 1.1 HMI41 with calibration option The HMI41 can be used as a field calibrator for various Vaisala humidity transmitters. There are three different calibration cables available: • 19116ZZ for the calibration of Vaisala’s HMD/W 60/70 and HMP140 series analogue transmi ...