
7.8 Replacing HUMICAP Sensor on HMS110/112
• New HUMICAP
â
humidity sensor (HUMICAP180R or HUMICAP180V)
• New filter (always recommended when replacing the sensor)
• Medium size crosshead screwdriver (Pozidriv)
• Flat-head screwdriver
• 3 mm hex key (Allen key) for opening the radiation shield screws
You will need to remove the radiation shield to access the sensor, and this is
difficult to do while the transmitter remains mounted on a pole or wall. The
procedure below takes advantage of the detachable screw terminal to allow the
cable to remain in place during the operation.
1. Power down the transmitter.
2. Open the transmitter cover and unplug the screw terminal. This allows you to leave the
cable and cover at the installation site.
3. Remove the transmitter from its installation point.
4. Open the two long screws that hold the radiation shield, and pull them out.
5. Use a flat head screwdriver to push on the visible plastic tab below the radiation shield.
6. Tilt the radiation shield away from the opened tab. This opens the second tab on the other
side, allowing you to remove the radiation shield.
Chapter 7 – Maintenance
67
Содержание hmdw110 series
Страница 1: ...M211726EN D User Guide Vaisala Humidity and Temperature Transmitter Series HMDW110 ...
Страница 5: ...Recycling 87 Table of Contents 3 ...
Страница 14: ...2 5 HMS110 112 Parts 1 2 3 4 5 6 7 8 9 10 11 Figure 3 HMS110 112 Parts HMDW110 User Guide M211726EN D 12 ...
Страница 25: ...3 Mount the transmitter using two screws of sufficient length 100 mm Ø 5 5 mm Chapter 3 Installation 23 ...
Страница 87: ...Appendix A Modbus Reference 85 ...
Страница 88: ...HMDW110 User Guide M211726EN D 86 ...
Страница 90: ...HMDW110 User Guide M211726EN D 88 ...
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Страница 92: ...www vaisala com ...