Baker Hughes Panametrics XDP, User Manual

35

c.  Use the [



] and [



] keys to highlight the 

zero setpoint

option and press [ENTER]. Using the four arrow keys, 

enter the new ppm/pcnt value. Then, press [ENTER].

5.  Press [ESC].
6.  Use the [



] and [



] keys to highlight the 

span drift

 option 

and press [ENTER].

7.  Program the following 

span drift

 values:

a.  Use the [



] and [



] keys to highlight the 

span drift/cal

option and press [ENTER]. Using the four arrow keys, 

enter the new ppm/pcnt value. Then, press [ENTER].

b.  Use the [



] and [



] keys to highlight the 

span drift/

total

 option and press [ENTER]. Using the four arrow 

keys, enter the new ppm/pcnt value. Then, press 

[ENTER].

c.  Use the [



] and [



] keys to highlight the 

span setpoint

option and press [ENTER]. Using the four arrow keys, 

enter the new ppm/pcnt value. Then, press [ENTER].

6.5.1b   4-20mA input trim

The XDP obtains its measurements via the 4-20 mA analog 

input from the transmitter. It then converts that signal to the 

digital ppm/pcnt value that is shown on the LCD. This menu 

is used to adjust the circuit that processes the analog input 

so that maximum accuracy is ensured. To use this menu, 

navigate to the 

cal>1:cal>adv

 menu and proceed as follows:

1.  At the 

adv

 menu, press [ENTER].

2.  Use the [



] and [



] keys to highlight the 

4-20mA input 

trim

 option and press [ENTER].

3.  Use the [



] and [



] keys to highlight the 

zero trim

 option 

and press [ENTER].

4.  To trim the zero point of the 4-20 mA analog input:

a.  Make sure an accurate current source is connected to 

the 4-20 mA analog input terminals (J6), and set the 

current source to supply exactly 4.00 mA.

b.  Use the [



] and [



] keys to adjust the displayed value 

to read exactly 4.00. Then, press [ENTER].

5.  Use the [



] and [



] keys to highlight the 

span trim

 option 

and press [ENTER].

6.  To trim the span point of the 4-20 mA analog input:

a.  Make sure an accurate current source is connected to 

the 4-20 mA analog input terminals (J6), and set the 

current source to supply exactly 20.00 mA.

b.  Use the [



] and [



] keys to adjust the displayed value 

to read exactly 20.00. Then, press [ENTER].

6.5.1c  AutoCal relays test

The XDP includes four alarm relays that are related to the 

calibration process. This menu is used to manually test the 

relays. To use the menu, navigate to the 

cal>1:cal>adv

 menu 

and proceed as follows:

NOTE:

 All of these alarms/relays are non-fail-safe types.

1.  At the 

adv

 menu, press [ENTER].

2.  Use the [



] and [



] keys to highlight the 

AutoCal relays 

test

 option and press [ENTER].

3.  Use the [



] and [



] keys to highlight the 

AutoCal alarm

option and press [ENTER]. Continue as follows:
a.  Use the [



] and [



] keys to highlight either the 

trip

or 

reset

 menu option and press [ENTER]. The alarm 

relay should respond accordingly.

b.  When done, press [ESC].

NOTE: 

upon leaving the test loop, the alarm is automatically 

reset to its normal state.
4.  Use the [



] and [



] keys to highlight the 

auto verif alarm

option and press [ENTER]. Continue as follows:
a.  Use the [



] and [



] keys to highlight either the 

trip

 or 

reset

 menu option and press [ENTER]. The alarm relay 

should respond accordingly.

b.  When done, press [ESC].

5.  Use the [



] and [



] keys to highlight the 

process cal 

relay

 option and press [ENTER]. Continue as follows:

a.  Use the [



] and [



] keys to highlight either the 

trip

 or 

reset

 menu option and press [ENTER]. The alarm relay 

should respond accordingly.

b.  When done, press [ESC].

6.  Use the [



] and [



] keys to highlight the 

zero/span cal 

relay

 option and press [ENTER]. Continue as follows:

a.  Use the [



] and [



] keys to highlight either the 

trip

 or 

reset

 menu option and press [ENTER]. The alarm relay 

should respond accordingly.

b.  When done, press [ESC].

6.5.1d  Zero/span cal type

If the XDP is programmed to perform a zero gas/span gas 

two-point calibration, it is necessary to provide both the zero 

gas and the span gas to the XDP at the appropriate time in 

the AutoCAL cycle. This menu is used to specify which of the 

two gases is called for first in the calibration cycle. To use 

the menu, navigate to the 

cal>1:cal>adv

 menu and proceed 

as follows:
1.  At the 

adv

 menu, press [ENTER].

2.  Use the [



] and [



] keys to highlight the 

zero/span cal

type option and press [ENTER].

3.  Use the [



] and [



] keys to highlight either the 

zero gas 

first

 or 

span gas first

 menu option and press [ENTER].