0112
www.ruggedaq.com
DETAILED
SPECIFICATIONS
NI400
0113
www.ruggedaq.com
11
DETAILED
SPECIFICATIONS
NI400
11
ANALOG MEASUREMENTS
ADC
24-bit (22 true bit) differential Analog-to-Digital Converters, 5SPS to
1000SPS, 0-24 Average Function, auto-calibration and auto-range
Measures type
and power supply
Current loop (2 wires): range 0÷25 mA
Power supply: 24V DC, 12V DC (up to 25 mA), external
Transmitter (3-4 wires): range 0÷25mA
Power supply: 24V DC, 12V DC (up to 50 mA), external
Voltage (4 wires): range ±10mV, ±100mV, ±1V, ±10V
Power supply: 24V DC, 12V DC, 5 V DC (up to 50 mA), external
Wheatstone bridge (6 wires, with sensing, 2 channels used): range
±10mV/V Min. bridge resistance: 200 Ω
Power supply: 5 V DC (up to 50 mA) Thermistor (NTC 3KΩ): range
-50°C to +150°C
Power supply: 0.05mA / 0.1mA
Cold Juntion Compensation
Accuracy
± 0.25°C * With stable temperature conditions. Tested in
climatic chamber.
Supported Thermocouples
K-J-T-R-B-E-N-S
(optional)
Reading resolution
1 µA at FS 20 mA - 1 µV at FS ±10 mV - 10 µV at FS ±100 mV - 100 µV at FS
±1 V - 1 mV at FS ±10 V
0.1 °C for NTC - 0.1 Hz at FS 6000 Hz - 0.001 mV/V at FS ±10 mV/V
Measurement accuracy
<0.05% F.S. with m/V measure (0,1% F.S. for NTC) - with Standard
Measurement
Temperature drift
< 10ppm/°C, range -30°C to +70°C
Input noise voltage
5,42 µVpp
Input limits
±12V
DC common mode rejection
>105dB
Normal mode rejection
>90dB
Input impedance
20 MΩ typical
OUTPUT
Digital output
One relay output (for alarm, etc.): volt-free closure (low voltage 30V, 1A)
PROTECTIONS
Electro-mechanical relays for each measuring channel:
Electrical endurance: min.relays for each measuring channel: Electrical
endurance: min. 2x105 operations
Mechanical endurance: 100x106 operations.
Circuit protection: Gas Discharge Tubes: DC Breakdown
Voltage( @100v/s ) 75;
tolerance of DCBV ± 20%;
impulse Breakdown Voltage ( @100v/µs ) 250.
impulse Breakdown Voltage ( @1kv/µs ) 525.
Overvoltage and reverse polarity protection
Short circuit protection on every outputs.
Voltage
7.2 to 14 V DC (reverse polarity protected), max 12 W
External rechargeable
battery
12V DC nominal
(i.e. solar panel system)
Internal non-rechargeable
6 batteries size AA, chemistry Lithium/ Iron disulfide (Life s2), nomi-
nal voltage 1.5 V,
batteries (no external
power supply)
min 2 A continous current discharge, min 2 A pulse capability, min 3
Ah capacity
Operating time
with internal batteries
> 2 months with 1 acquisition every 1 hour with no.4 instruments (24V
DC @12 mA @25 °C, 5 sec warm up), data transmitted via FTP/email
after every acquisition, datalogger configured in “Timed mode”
> 6 months with 1 acquisition every 1 hour with no.4 instruments (24V DC
@12 mA @25 °C, 5 sec warm up), data transmitted via FTP/email once a
day, datalogger configured in “Timed mode”.
> 7 months with 1 acquisition every 1 hour with no.4 instruments (24V
DC @12 mA @25 °C, 5 sec warm up), no data transmission, data-
logger configured in “Timed mode”.