beautypg.com

3 output signal during hold, Operation—4–20 ma/hart – Hach-Lange SI792(x) E HACH GLI 3700 series SI792(x) T 7MA2200 and 8398 series User Manual User Manual

Page 42

background image

Operation—4–20 mA/HART

40

5.2.1.3 Output signal during HOLD
The output signal during hold periods can be maintained at the last
measured value (

Figure 12

) or fixed at a specified value (

Figure 13

).

The allowable range for the fixed value is 3.4 to 22 mA.

Figure 12 Output signal during HOLD—last value

1 Output signal during HOLD

2 HOLD mode

Figure 13 Output signal during HOLD—fixed value

1 Output signal during HOLD

2 HOLD mode