K-Tec MT2000 manual Honeywell De Output Option, 5.2Possible Symptoms cont’d, Action

5.2Possible Symptoms (cont’d)

SYMPTOM	ACTION
Raw Counts are 0 and Output is in	Raise the Threshold
	Check probe for presence
alarm
	Decrease blanking
	Check cables
No Display	Check for proper supply voltage
	Check for proper wiring
	Replace electronics module
21 mA output	Unit is in ALRM – check THV, GS (section 4.4.2); check BLK
	(section 2.3.3.3)
OUTPUT steady even when level	Check cable for obstructions, buildup, and trash or nearby metal
moves
	objects.
Unit worked satisfactorily until new	Ensure that barrier meets requirements of pg 31 (APPENDIX H) and
IS barrier installed in circuit
	that sufficient voltage / power is available for device.
Unit reads incorrectly at the top or	This non-linearity is common at the extreme ends of the probe and can
very end of cable / probe
	be minimized or eliminated by using the Linearization table.
After a power loss the unit goes to
4 ma before returning to normal	Normal part of start up cycle
reading

5.3Electronics Module Replacement

A defective electronics module can be replaced as follows:

1.Before installing a new module record the KO and KG numbers off the new module for future reference. The numbers are marked on the side of the module in the following format: 1-KO-KG, 2-KO-KG for ranges 1 or 2 respectively.

2.Remove the existing module by unscrewing the 2 flat screws holding the module in the housing.

3.Note the orientation of the module and unplug from the housing base.

4.Carefully unplug the coax cable connector from side of the module.

5.Plug the coax cable into the new module.

6.Plug module onto the housing base.

7.Secure the module to the housing by screwing the 2 flat screws.

8.Power the unit and, using the LCD display, go to the CFG menu to KO and KG and enter the numbers written down from the side of the new module for RNG1 or RNG2. (RNG 1 is for probes < 100 ft. / 30.5m.)

The MT2000 is now ready for use without further calibration.

6. HONEYWELL DE OUTPUT OPTION

6.1Interoperability and Conformance Class

The DE option uses the Honeywell proprietary Digitally Enhanced Protocol for Smart Transmitters. The confor- mance class is as follows:

The DCS configuration should be set for Class 0, 4 byte Mode.

Class 0: Continuous broadcast, in burst mode, of the following parameters:

PV1: Primary Variable; Level #1 in %

PV Status: OK, Critical or Bad PV

20 MT2000-0200-01 Rev f (10-2007) DCN0160