Det-Tronics LS2000 - Calibration Initiation

2.2 95-871428
CALIBRATION INITIATION
Calibration may be initiated by any of the
following means:
• Theonboardmagneticcalibrationswitch
• Digital communication via HART (see HART
appendix) or MODBUS communication
(consult factory for details)
• Remotecalibrationline.
Upon initiation, the LS2000 automatically
performs the zero calibration adjustment,
and then signals with a green LED when this
operation is complete.
Calibration Using Magnetic Switch
The LS2000 receiver provides an onboard
magnetic calibration/reset switch for non-
intrusive calibration capability. The magnetic
switch is actuated by holding a calibration
magnet at the specified location on the device
bulkhead. See Figure 2 for switch location.
An onboard multi-color LED provides status
indication during calibration.
To initiate calibration, hold the calibration
magnet against the side of the receiver at the
location shown in Figure 2. Apply the magnet
for 3 to 30 seconds and release while the LEDs
are flashing yellow at 5 Hz.
Calibration Using Calibration Line Terminal
The calibration / reset function can be
accomplished remotely by installing a switch
between the CAL and 0V COM terminals of the
LS2000 receiver.
To initiate calibration, short the CAL and OV
COM terminals for 3 to 30 seconds and release
while LEDs are flashing yellow at 5 Hz.
CALIBRATION SEQUENCE
1. Initiate calibration using one of the methods
listed above:
A. The LEDs continue to flash yellow at 5 Hz.
B. The current output decreases to 1 mA,
2.2 mA, or as configured by the user.
2. When zero calibration is complete:
A. The onboard LEDs change from flashing
yellow to steady green.
B. Calibration is complete and the current
output returns to 4 mA.
NOTE
Calibration will time out if unsuccessful
after 10 minutes.
NOTE
To abort an in-process calibration, repeat
the calibration initiation sequence (e.g.
hold the magnet for 3 seconds or more
and release). The device will revert to its
previous calibration setting.