Operating Instructions BA_045_2019-08_10.00 Changing module in PASCAL CV pressure transmitter
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BTA-No. 045 page 3
Placing the basic module in service after assembly
- After the installation work is completed, switch on the supply voltage.
- The 2 device LEDs will flash alternately. This shows that the data in the basic module and the sensor do not match.
- To adjust the data, press the right-hand button (SPAN).
- The LEDs will stop flashing.
- The pressure transmitter will be ready for operation after approximately 20 seconds.
If the device was being operated within a special measuring range, replacing the module will have caused these settings to be lost.
This means that the device is now operating within the nominal range of the module and can be programmed for special measuring
ranges (see BTA-028 operating instructions, page 5).
After a basic module has been replaced, the settings and programming for all modules are lost.
Example:
The nominal measuring range of the module is 0 to 4.0 bar, but the special range should be 1.0 to 2.5 bar.
To program the lower range value, proceed as follows:
In this example, the output current should be 4.0 mA at a pressure of 1.0 bar.
To set the device pressure to 1.0 bar, press and hold the ZERO button for approximately 4 seconds.
The ZERO LED will flash once to confirm the transfer of the new zero point.
To program the upper range value, proceed as follows:
In this example, the output current should be 20.0 mA at a pressure of 2.5 bar.
To set the device pressure to 2.5 bar, press and hold the SPAN button for approximately 4 seconds.
The SPAN LED will flash once to confirm the transfer of the new upper range value.
1.0 bar
=
0%
=
4.0 mA
=
lower range value
2.5 bar
=
100%
=
20.0 mA =
upper range value
Assembling the basic module 4 to 20 mA
Step 1
Place the sealing washer in position (Fig. 1).
Step 2
Hold the basic module at the side of the case housing and plug in the sensor con
-
nector. (Fig. 2).
Caution:
Avoid touching the plug connector at the bottom of the basic module with your
fingers since dirt (grease, moisture) and electrostatic discharge could damage the
device.
Step 3
Slip the basic module sideways over the rim and into the housing of the sensor
module. (Fig. 3).
Step 4
Using a suitable screwdriver (with as wide a blade as possible), install the screws
(3x19.5mm) at left and right of the basic module and tighten them down (Fig. 4).
Connect the device lead. Then screw the device cap back on.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
