Brief Description; Overview Of The Parts; Technical Data - GMC SIRAX PT 602 Mode D'emploi

4. Brief description

The measurement transmitter SIRAX PT 602 converts the
resistance of a Pt 100 feeler to a linear output signal propor-
tional to the temperature.
Depending on the version of the unit, the Pt 100 can be
connected by two-, three- or four-wire.
The desired measuring range can be set within wide limits
with the aid of DIP switches and a potentiometer.

5. Overview of the parts

Figure 2 shows those parts of the device of consequence for
mounting, electrical connections and other operations
described in the Operating Instructions.
(6)
(5)
Fig. 2. The two-channel version of SIRAX PT 602.
(2) Data card
(5) Type label
(6) Fastener
ON Green LED's for indicating device standing by
Red LED's for indicating operation of open-circuit or
short-circuit

6. Technical data

Measuring input
Temperatures with
resistance thermometer
for two-wire
– 150 to + 800 °C
connection:
for three- or four-
– 170 to + 800 °C
wire connection:
Min. span: 50 K
Max. span: 700 K
Measuring ranges: Set within wide limits on DIP
switches and a potentiometer
Feeler current: < 1 mA
Max. lead
25 Ω per lead (total 50 Ω)
resistance:
Measuring outputs
DC current:
Burden voltage:
External resistance:
DC voltage:
Load capacity:
Residual ripple of
output current:
Response time:
Open-circuit sensor circuit and short-circuit
super-vision
Pick-up level:
(2)
Span
Fault signalling mode:
Zero
ON
ON
Span
Power supply H
Zero
AC/DC power pack (DC and 45...400 Hz)
Table 1: Rated voltages and permissible variations
Nominal voltage U
24... 60 V DC / AC
85...230 V
1
An external supply fuse must be provided for DC supply voltages
> 125 V.
Power consumption:
Accuracy data (acc. to DIN/IEC 770)
Basic accuracy:
Environmental conditions
Commissioning
temperature:
Operating temperature: – 25 to + 55 °C
Storage temperature:
Annual mean
relative humidity:
0/4 ... 20 mA, switchable by plug-
in jumpers
10 V
max. ≤ 500 Ω
R
ext
0 ... 10 V
min. ≥ 2 kΩ
R
ext
< 1.5% p.p.
≤ 500 ms
– At open-circuit
Approx. 1 to 400 kΩ
– At short-circuit
Approx. 0 ... 30 Ω
– Frontplate signals
Red LED for signalling fault
– Output signal
at 0/4...20 mA,
output approx. 25 mA
at 0...10 V, output approx. 12.5 V
Permissible variation
N
DC – 15...+ 33%
AC ± 15 %
1
DC / AC
≤ 1.8 W resp. ≤ 3.4 VA
Max. error ≤ ± 0.5%
including linearity and repeatability
errors
– 10 to + 55 °C
– 40 to + 70 °C
≤ 75%
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