Campbell HMP 35A Instrukcja Obsługi Pobierz pdf (Strona 8)

Table of Contents

B.2 Differential Measurement Example ................................................ B-2

B.3 Mean Vapor Pressure Example ....................................................... B-3

C. Interfacing with HMP155A RS-485 Output ............ C-1

C.1 RS-485 Interface Options ................................................................ C-1

C.2 SDM-SIO1 Serial I/O Module Interface Option ............................. C-1

C.2.1 Program Example for SDM-SIO1 Module............................... C-1

C.3 MD485 Multidrop Interface Option ................................................ C-4

C.3.1 MD485 Multidrop Interface Configuration .............................. C-6

C.3.2 CR1000 Example Program for use with MD485 ..................... C-7

Figures

4-1. HMP155A in shipping box .................................................................. 2

4-2. Cable routed through the connector cover ........................................... 3

4-3. Cable connected to the sensor ............................................................. 3

4-4. HMP155A with connector cover in place and without protective

cap .................................................................................................... 3

4-5. HMP155A and 14-plate radiation shield on a tripod mast .................. 4

4-6. HMP155A and 14-plate radiation shield on a CM200-series

crossarm ........................................................................................... 4

6-1. Probe dimensions ................................................................................ 9

6-2. Wiring of HMP155A 8-pin connector ................................................. 9

8-1. Changing the filter ............................................................................. 15

Tables

5-1. Recommended Lead Lengths .............................................................. 8

7-1. Connections for Single-Ended Measurements .................................. 12

7-2. Connections for Differential Measurements ...................................... 12

7-3. Parameters for Temperature .............................................................. 13

7-4. Parameters for Relative Humidity ..................................................... 13

8-1. Chemical Tolerances of HMP155A .................................................. 16

B-1. Wiring for Single-ended Measurement Examples ........................... B-1

B-2. Wiring for Differential Measurement Examples ............................. B-2

B-3. Wiring for Vapor Pressure Examples .............................................. B-3

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Campbell HMP 35A Instrukcja Obsługi Strona 8