ABUS Technologies ATxBlock Temperature Transmitter - Manual (Page 10)

ABUS TECHNOLOGIES INC.
10
ATxBlock
7. Apply: Sends a new configuration to the transmitter.
8. Device Information: The Device Information box contains relevant data
concerning a particular ATxBlock transmitter. Please pass along this information
when contacting the technical assistance department.
Note: The factory default configuration is (unless otherwise specified or ordered):

Pt100 input, 0 to 100 °C

60 Hz filtering and upscale (20 mA) output for sensor failure.
8. MAINTENANCE
Calibration of Instruments
All input types and the 4-20mA output current are factory calibrated. However, a
manual offset trim is implemented to provide fine adjustments to the signal in the field.
This is accomplished by means of short circuiting terminals 4 (Zero) and 1(-). The
transmitter waits 2 seconds before it starts changing the offset. The offset adjustment
is capable of varying the output current by an amount equal to 0.80mA relative to the
original calibration. After reaching the maximum value (0.80mA above the original
current), the output is driven instantly to –0.80mA below the original current, and
continues increasing. When the desired output current (offset) is reached, opening the
jumper will cause the ATxBlock to acknowledge the new offset value. Fine trimming is
possible with momentary (2s minimum) jumper contact.
The offset correction can also be accomplished by the ATxConfig software. See
in figure ATxConfig main screen, the Zero Correction field for this purpose. The serial
adaptor can be connected to the transmitter while it is operating in the process.
Note: when using a Pt100 simulator, make sure the ATxBlock Pt100 excitation current
(0.17 mA) s compatible with the simulator specification.
The input sensors are listed in table ATxBlock Input Sensor, along with the
maximum and minimum ranges accepted by each one. The ATxConfig software will
allow only configurations that are consistent with the data in this table.