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Specifications
General
12 RTD Inputs
Measuring Range: –50° to +250°C
Accuracy:
± 2°C
RTD Open-Circuit
Detection:
> 250°C
RTD Short-Circuit
< –50°C
Detection:
RTD Types:
PT100, NI100,
RTD Lead
Resistance:
25 ohm max. per lead
Lead Length:
< 10 m to meet
Update Rate:
< 3 sec
Noise Rejection
on RTD Inputs:
1.4 Vac
Power Supply
120 Vac:
± 20%
240 Vac:
± 20%
50/60 Hz:
± 5%
AC Burden:
5 VA Max
Voltage Dropout:
< 40 V within 1 minute of
Rated
Insulation Level: 300 Vac
Rated
Impulse Voltage: 4000 V
Inrush Current:
< 50 A
Internal Fuse Protection
Fuses:
2
500 mA, 250 V
Rated:
Communications
Binary data packet contains temperatures and
self-test results.
Sent approximately every 0.6 seconds (0.75
seconds maximum) at 2400 bps.
CRC-16 data security.
As far as 500 m using 62.5/125 μm fiber-optic
cable with ST connectors (820 nm).
Date Code 20080722
NI120, CU10
IEC 60255-22-1 and
EN 61000-4-5
≥ 50 Hz
peak
power removal
Operating Ratings
Operating
–40° to +85°C
Temperature
(Surround Air):
Storage Temp:
–40° to +85°C
Relative
Humidity:
0–95% noncondensing
Maximum
Altitude:
2000 m
Pollution Degree:
PD3
Overvoltage
Category:
II
Type Tests
Environmental Tests
Corrosion:
ASTM B117-03
Protection Class:
IEC 60529 IP20
Cold:
EN 60068-2-1
Damp Heat,
IEC 60068-2-30
Cyclic:
Dry Heat:
EN 60068-2-2
Radiated
EN 55011/ 55022
Emissions:
Conducted
EN 55011/ 55022
Emissions:
Dielectric Strength and Impulse Tests
Dielectric:
IEEE C37.90
EN 60947-1
Impulse:
EN 60947-1
Specifications
(–40° to +185°F)
(–40° to +185°F)
Salt Spray (Fog)
Test Ad; 16 hrs @
–40°C
Test Db; 25°–55°C,
6 cycles, 95% relative
humidity
Test Bd; 16 hrs @
+85°C
Class B
Class B
2800 Vdc on power
supply (not applicable
to RTD inputs)
0.5 J, 5000 V (not
applicable to RTD
inputs)
825-PR12D RTD Scanner
15
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