Campbell-scientific HMP35C Temperature and RH Sensor Instrukcja Użytkownika Pobierz pdf (Strona 12)

HMP35C TEMPERATURE AND RH PROBE

TABLE 9. Wiring for Example 4

Description Color CR10(X)

Temperature Orange SE 3 (2H)

Relative Humidity Green SE 4 (2L)

Temperature Signal Reference White AG

Temperature Excitation Black E1

Power Control Yellow C1

Power Red 12 V

RH Signal, Power, & Control Reference Purple AG

Shield Clear G

Example 4. Sample CR10(X) Program that Computes Vapor Pressure

and Saturation Vapor Pressure

;Measure the HMP35C temperature.

;

01: Temp (107) (P11)

1: 1 Reps

2: 3 SE Channel

;Orange wire (SE 3), White wire (AG)

3: 1 Excite all reps w/E1

;Black wire (EX 1)

4: 1 Loc [ T_C ]

5: 1 Mult

;See Table 4 for alternate multipliers

6: 0 Offset

;See Table 4 for alternate offsets

;Turn the HMP35C on.

;

02: Do (P86)

1: 41 Set Port 1 High

;Yellow wire (C1)

;Pause 150 milliseconds, before making the measurement, so the

;probe can stabilize on the true relative humidity.

;

03: Excitation with Delay (P22)

1: 1 Ex Channel

2: 0 Delay W/Ex (units = 0.01 sec)

3: 15 Delay After Ex (units = 0.01 sec)

4: 0 mV Excitation

;Measure the HMP35C relative humidity.

;

04: Volt (SE) (P1)

1: 1 Reps

2: 5 2500 mV Slow Range

;CR500 (2500 mV); CR23X (1000 mV); 21X, CR7 (5000 mV)

3: 4 SE Channel

;Green wire (SE 4), Purple wire (AG)

4: 2 Loc [ RH_frac ]

5: 0.001 Mult

;See Table 5 for alternate multipliers

6: 0 Offset

;Turn the HMP35C off.

;

05: Do (P86)

1: 51 Set Port 1 Low

;Yellow wire (C1)

1 2 ... 7 8 9 10 11 12 13 14 15 16

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Campbell-scientific HMP35C Temperature and RH Sensor Instrukcja Użytkownika Strona 12

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