Chromalox 1604-7 user manual Linear Inputs, Logic Input

STANDARD RANGES TABLE

T/C				Ranges
type
L	0	0 /+ 400.0°C						---
L	1	0 /+ 900		°C	20	0	/ + 1650 °F
J	2	-100.0/ + 400.0°C						---
J	3	-100	/ + 1000 °C		21	-150 / + 1830 °F
K	4	-100.0/ + 400.0°C						---
K	5	-100	/+ 1370 °C		22	-150 / + 2500 °F
T	6	-199.9/ + 400.0°C			23	-330 / + 750		°F
N	7	-100	/+ 1400	°C	24	-150 / + 2550 °F
R	8	0	/+ 1760	°C	25	0	/ + 3200	°F
S	9	0	/+ 1760	°C	26	0	/ + 3200	°F

B)RTD (Resistance Temperature Detector) Input: for RTD Pt 100 W, 3-wire connection. Input circuit: current injection.

°C/°F selection: via front pushbuttons or serial link.

Line resistance: automatic compensation up to 20 W/wire with no measurable error. Calibration: according to DIN 43760 Burnout: up scale. NOTE: a special test is

provided to signal OVERRANGE when input resistance is less than 15 W.

STANDARD RANGES TABLE

Input		Ranges
type
	10	- 199,9	/ + 400,0	°C
RTD Pt 100 W	11	- 200	/ + 800	°C
DIN 43760	27	-199,9	/ +400,0	°F
	28	-330 / + 1470		°F

C) LINEAR INPUTS

Read-out: keyboard programmable between -1999 and +4000.

Decimal point: programmable in any position.

Burn out: the instrument shows the burn out condi- tion as an underrange condition for 4-20 mA, 1-5 V and 2-10 V input types.

It shows the burn out condition as an underrange or an overrange condition (selectable by soldering jumper) for 0-60 mV and 12-60 mV input types. No indication are available for 0-20 mA, 0-5 V and 0-10 V input types.

	Input type					impedance		Accuracy
12		0 - 60 mV				> 1 MW
13		12	- 60 mV
14		0 - 20 mA				< 5	W
15		4 - 20 mA						0.2 % + 1 digit
16		0	-	5 V		> 200 kW		@ 25°C
17		1	-	5	V
18		0	- 10		V	> 400 kW
19		2	- 10		V

D) LOGIC INPUT

The instrument is equipped with one input from contact (voltage free) for setpoint selection. Contact open = Main setpoint.

Contact closed = Auxiliary setpoint.

NOTES

1)Use an external contact with a contact rating better than 0.5 mA, 5 V DC.

2)The instrument needs 100 ms to recognize a contact status variation.

3)The logic inputs are NOT isolated by the measuring input.

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1604-7-1-AB.p65 28 5/16/00, 10:50 AM