Chromalox 1604-7 P2 = Decimal point position, P3 = Initial scale value, P4 = Full scale value

----.= No decimal figure.

---.-= One decimal figure. --.--= Two decimal figures. -.---= Three decimal figures.

21	= TC type	J	range	-150	/	+1830	°F
22	= TC type	K	range	-150	/	+2500	°F
23	= TC type	T	range	-330	/	+750	°F
24	= TC type	N	range	-150	/	+2550	°F
25	= TC type	R	range	0	/	+3200	°F
26	= TC type	S	range	0	/	+3200	°F

27= RTD type Pt 100 range-199.9 / +400.0 °F

28= RTD type Pt 100 range -330 / +1470 °F NOTE: selecting P1 = 0, 2, 4, 6, 10 or 27, the instrument set automatically P39 = P40 = FLtr. For all the remaining ranges it will set P39 = P40 = nOFL.

If a different selection is desired, P39 and P40 may be modified, after executed P1 configuration.

P2 = Decimal point position

This parameter is available only when a linear input is selected (P1 = 12, 13, 14, 15, 16, 17, 18 or 19).

P3 = Initial scale value

For linear inputs it is programmable from -1999 to 4000.

For TC and RTD input, it is programmable within the input range.

When this parameter is modified, rL parameter will be re-aligned to it.

P4 = Full scale value

For linear inputs it is programmable from -1999 to 4000.

For TC and RTD input it is programmable within

the input range.

When this parameter is modified, rH parameter will be re-aligned to it.

The initial and full scale values determine the input span which is used by the PID algorithm, the SMART and the alarm functions.

NOTE: the minimum input span (S = P4 - P3), in absolute value, should be set as follows:

For linear inputs, S > 100 units.

For TC input with °C readout, S > 300 °C. For TC input with °F readout, S > 550 °F. For RTD input with °C readout, S > 100 °C. For RTD input with °F readout, S > 200 °F.

P5 = Output 1 function

rEv	=	Out 1 is used as control output with
		reverse action
dir	=	Out 1 is used as control output with direct
		action
Pv.rt =		Out 1 is used as analog retransmission of
		the measured value (process variable)

SP.rt = Out 1 is used as analog retransmission of the operative set point.

REVERSE ACTION		DIRECT ACTION
Input		Input
	t	t
Output		Output
	t	t

P6 = Output 1 type.

0-20 = output type 0 - 20 mA. 4-20 = output type 4 - 20 mA.

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1604-7-1-AB.p65 11 5/16/00, 10:50 AM