Rtd calibration settings for jis, Table 12 – Watlow Series 920 Microprocessor-Based Ramping Control User Manual

Page 65

Press the MODE key until the HOF XX.XX parameter appears on the

alphanumeric display. (The decimal point will not appear on the display of

your control.)

Use the UP/DOWN keys to adjust the alphanumeric dis-

play on the 920 to match the reading on the DVM. Once the two readings
match, press the ENTER key.

Press the MODE key until ATZ XXXX appears on the alphanumeric

display. Set the precision decade box to the correct LOW setting from

Table 12 that corresponds to the type of 920 unit you have. Allow 10 sec-
onds for the unit to stabilize and then press the ENTER key.

Press the MODE key until ATG XXXX appears on the lower display. Set

the precision decade box to the correct HIGH setting from Table 12 that
corresponds to the type of 920 that you have. Allow 10 seconds to stabi-

lize and then press the ENTER key. The unit is now calibrated for RTD.

9. Remove power from the Series 920. Remove wires from

# 2 , and #3.

Set DIP Switch

#8 to the OFF

position.

NOTE:

For

DIN curve

RTD,

enter

the

SPCLFUNC

menu

and use the

MODE

key to advance to

the

RTD

parameter.

Select

DIN.

Table 12 -

RTD Calibration

Settings for

JIS

WATLOW Series 920 User’s Manual 65