Altronic CDM-2100 Instrukcja obsługi - Strona 6

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Press ENTER again to change the cursor to the é icon. Use the UP and DOWN

arrow buttons to make the desired setpoint changes. The procedure is repeated

to change the first setpoint value.

8.2 HYSTERESIS

Hysteresis can be used when the output switch is configured as non-latching

to prevent the output switch from oscillating or turning on and off around the

setpoint. The hysteresis is implemented as a time, in seconds, that begins

when the sensor input value returns to within the setpoint value limits. When

the input value returns to within the setpoint value limits, the hysteresis timer

starts and the switch stays tripped for the configured hysteresis time. If during

the hysteresis time the setpoint is violated again, the hysteresis timer starts

over. The hysteresis value can be set from 0 to 99 seconds. To set the hysteresis

value, point to HYST and press the ENTER key. Use  or  to increase or

decrease the hysteresis time and press ENTER to save the new value.

CHANNEL 1

~HYST.

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8.3

SETPOINTS

The SETPOINTS menu allows the user to set a setpoint value for Low and

High, and set the hysteresis value for each channel.

REFER TO SECTION 8 FOR DETAILS ON SETPOINTS

8.4

CALIBRATE

The gauge is calibrated at the factory and should not require additional

calibration. However, calibration can be performed in the field many times

over the life of the gauge. Each channel is calibrated separately to the type of

input transducer selected. The calibration mode is used to calibrate the zero

and span values. Calibration can be performed from the front keypad without

disassembling the gauge. A calibrator or simulator capable of outputting the

correct signal for the type of transducer selected for that channel is required

to provide a calibration reference.

CALIBRATE:

~FULL CAL

TWEAK LO ONLY

TWEAK HI ONLY

RECALL FACT CAL

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8.4.1

CALIBRATION PROCEDURE

Connect the appropriate calibrator or simulator (for thermocouples use the

proper type of thermocouple extension wire) to the gauge for channel 1 or 2,

follow the hook-up drawing for that sensor type. Be sure that the sensor type

and the engineering units of the calibrator match the type and engineering

units of the instrument before performing a calibration.

CDM-2100 OM 3-21

6in H2O

0in H2O

9 SEC.

CHANNEL 1

NOTE: During calibration, the unit

allows 2 minutes between keystrokes

to change or save a new calibration.

If 2 minutes lapse without a keystroke,

the device will automatically return

to the home screen with the previous

values. The new calibration information

is saved only if the ENTER key is

pressed and the display reads SAVED.