DayTronic 3770 Instrukcja obsługi - Strona 10

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Model 3770

C o n t r o l s

Analog Control Settings

Front panel controls configure the Signal conditioner section for excitation level, mode of the analog output

signal, low pass filter characteristics and shunt calibration being internal or external.

1 – 5 Vdc Output - UP sets the analog output FS to 5 Vdc, DOWN is 10 Vdc

2 – 4 - 20 mA - UP sets the analog current output for 4-20 mA , DOWN is 4-12-20ma

3 – 20/200 Hz - UP selects 20 Hz filter. DOWN selects 200 Hz filter

4 – 20/2 Hz - UP selects 20 Hz filter. DOWN selects 2 Hz filter

5 – SHUNT Internal / External - UP selects the Internal Shunt Resistor – 59K, DOWN is External

6 – Excitation - UP selects 10 Vdc excitation to the sensor, DOWN selects 5 Vdc

7 – Not Used

•

Note:

The Excitation (switch 6) placement is used to select the mV/V input range of the unit. 5 Vdc setting

will accept sensors from 5.0 to 10 mV/V. 10 Vdc setting will accept .5 to 5.0 mV/V sensors.

Analog Control Settings for Conditioner Configuration

4-20

20 Hz

INT

With all switches in the UP position, the unit will have the following settings:

10 Vdc Excitation voltage

The full scale analog output will be 5.000 Vdc

The current output will be set for 4 ma = zero and 20 ma will = positive full scale

The analog low pass filter will be set for 20 Hz

Shunt calibration resistor will be set for the internal 59K Ohm resistor value

Down

Function

1 - VDC OUT

2 - mA OUT

4-12-20

3 - FILTER

200 Hz

4 - FILTER

2 Hz

5 - SHUNT

EXT

6 - EXC

7 - N/A

DC STRAIN GAGE PANEL METER

Analog Control Settings (red switch array)

The selection of the 7 front panel analog control

settings will configure the signal conditioning

section of the meter. The position of the switches

will depend on the type of sensor, its parameters

and the expected analog output signal levels

along with the output signal's 3db roll-off

response characteristics.

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