Dynasonics TFXP Series Transit Time Ultrasonic Flow Meter Manuel d'utilisateur télécharger pdf (Page 65)

Rev. 5/09 -3.27- TFXP

4-20 mA

Calibration

Example 1: To span the 4-20 mA output from -100 GPM to +100

GPM, with 12 mA being 0 GPM, set the FL 4MA and FL 20MA

inputs as follows:

FL 4MA = -100.0

FL 20MA = 100.0

Example 2: To span the 4-20 mA output from 0 GPM to +100

GPM, with 12 mA being 50 GPM, set the FL 4MA and FL 20MA

inputs as follows:

FL 4MA = 0.0

FL 20MA = 100.0

The 4-20 mA ISO-MOD is factory calibrated and should not require

adjustment unless it is replaced.

The CAL 4MA entry allows fine adjustments to be made to the

“zero” of the 4-20 mA output. To adjust the 4 mA output, an

ammeter or reliable reference connection to the 4-20 mA output

must be present.

Figure 3.10 — Typical Multimeter Connection

PART 3 - KEYPAD CONFIGURATION

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 131 132

Pas de commentaire

Dynasonics TFXP Series Transit Time Ultrasonic Flow Meter Manuel d'utilisateur Page 65