Characteristics
Original instructions
About us
Altitude Operating Conditions
The characteristics in the tables below apply to the modules BMX ART 0414(H) and BMX ART 0814(H) for use at altitude up to 2000 m (6560 ft). When the modules operate above 2000 m (6560 ft), apply additional derating.
For detailed information, refer to chapter Operating and Storage Conditions.
General Characteristics
The general characteristics of the BMX ART 0414(H) and BMX ART 0814(H) modules are as follows:
Type of inputs
Isolated, RTD, thermocouple and voltage inputs
Nature of inputs
+/- 40 mV; +/- 80 mV; +/- 160 mV; +/- 320 mV; +/- 640 mV; 1.28 V
Operating temperature
BMX ART 0414
BMX ART 0814
0...60 ºC (32...140 ºF)
BMX ART 0414H
BMX ART 0814H
-25...70 ºC (-13...158 ºF)
Number of channels
BMX ART 0414(H)
4
BMX ART 0814(H)
8
Acquisition cycle time
BMX ART 0414(H)
400 ms / 4 channels
BMX ART 0814(H)
400 ms / 8 channels
Conversion method
ΣΔ
Resolution
15-bit + sign
Isolation:
  • Between channels
  • Between channels and bus
  • Between channels and ground
  • 750 Vdc
  • 1400 Vdc
  • 750 Vdc
Maximum authorized over voltage for inputs
+/- 7.5 Vdc
Cold junction compensation
  • Internal compensation using the dedicated TELEFAST ABE-7CPA412 wiring accessory, including a sensor.
  • External compensation dedicating channel 0 to a 2/3-wires Pt100 for CJC.
  • External compensation using the CJC values of channels 4/7 for channels 0/3. In this case, only one sensor is needed.
Input filter
Low pass filter (1st order numerical)
Rejection in differential mode (50/60 Hz)
Typical 60 dB
Common mode rejection (50/60 Hz)
Typical 120 dB
BMX ART 0414(H)
Power consumption (3.3 V)
Typical
0.32 W
Maximum
0.48 W
Power consumption (24 V)
Typical
0.47 W
Maximum
1.20 W
BMX ART 0814(H)
Power consumption (3.3 V)
Typical
0.32 W
Maximum
0.48 W
Power consumption (24 V)
Typical
1.00 W
Maximum
1.65 W
Voltage Input Characteristics
The characteristics of the voltage inputs of the BMX ART 0414(H) and BMX ART 0814(H) modules are as follows:
Voltage range:
+/- 40 mV; +/- 80 mV; +/- 160 mV; +/- 320 mV; +/- 640 mV; 1.28 V
Input impedance:
Typical 10 MOhms
Maximum converted value:
+/- 102.4%
Maximum resolution:
2.4 μV in the range +/- 40 mV
Measurement error for standard module:
  • At 25 °C (77 °F)
0.05% of FS (1)
  • Maximum in the temperature range 0...60 °C (32...140 °F)
0.15% of FS (1)
Measurement error for Hardened module:
  • At 25 °C (77 °F)
0.05% of FS (1)
  • Maximum in the temperature range -25...70 °C (-13...140 °F)
0.20% of FS (1)
Temperature drift:
30 ppm/°C
Legend:
(1) FS: Full Scale
RTD Input Characteristics
The characteristics of the RTD inputs of the BMX ART 0414(H) and BMX ART 0814(H) modules are as follows:
RTD
Pt100
Pt1000
Ni100
Ni1000
Cu10
CU50
CU100
Measurement range
According to IEC
-175... +825°C
(-347...+1517°F)
According to US/JIS:
-87 +437°C
(-125...+819°F)
-54...+174°C
(-65...+345°F)
-91...+251°C (-132...+484°F)
-200...+200°C
(-328...+392)
Resolution
0.1°C (0.2°F)
Detection type
Open circuit (detection on each channel)
Error at 25 °C (77 °F) (1)
+/- 2.1 °C (+/- 3.8°F)
+/- 2.1 °C
(+/- 3.8°F)
+/- 0.7°C
(+/- 1.3°F)
+/- 4 °C
(+/- 7.2°F)
+/- 2.1°C
(+/- 3.8°F)
Maximum error for standard modules in the temperature range 0...60° C (32...140 °F) (2)
+/- 3 °C (+/- 5.4°F)
+/- 3 °C (+/- 5.4°F)
+/- 0.7°C (+/- 1.3°F)
+/- 4 °C
(+/- 7.2°F)
+/- 3°C
(+/- 5.4°F)
Maximum error for hardened modules in the temperature range -25...70 °C (-13...140 °F) (2)
+/- 3 °C (+/- 5.4°F)
+/- 3.5°C (+/- 6.3°F)
+/- 1.15°C (+/- 2.1°F)
+/- 4.5°C (+/- 8.1°F)
+/- 3.5°C
(+/- 6.3°F)
Maximum wiring resistance:
  • 4-wire
50 Ω
500 Ω
50 Ω
500 Ω
50 Ω
50 Ω
  • 2/3-wire
20 Ω
200 Ω
20 Ω
200 Ω
20 Ω
20 Ω
Temperature drift:
30 ppm/°C
Legend
(1) errors caused by the wiring, +/- 1°C (0.2°F) in the range -100...+200°C (-148...+392°F) for Pt100
(2) See detailed errors at temperature point.
Thermocouple Input Characteristics
This table presents the general characteristics of the thermocouple inputs of the BMX ART 0414(H) and BMX ART 0814(H) modules:
Thermocouples
B
E
J
K
L
Measurement range
+171... +1,779°C (340... 3234°F)
-240... +970°C (-400... 1778°F)
-177... +737°C (-287... 1359°F)
-231... +1,331°C (-384... 2428°F)
-174... +874°C (-281... 1605°F)
Thermocouples
N
R
S
T
U
Measurement range
-232 +1,262°C (-386... 2304°F)
-9... +1,727°C (16... 3234°F)
-9... +1,727°C (-16... 141°F)
-254... +384°C (-425... 723°F)
-181... +581°C (-294... 1078°F)
Resolution
0.1°C (0.2°F)
Detection type
Open circuit (detection on each channel)
Error at 25°C
+/- 3.2°C for J, L, R, S and U types (see Thermocouple Ranges for detailed errors at temperature point for each type); +/- 3.7°C for B, E, K, N and T types
Maximum error for standard modules in the temperature range 0...60°C (32...140°F) (2)
+/- 4.5°C (+/-8.1°F) for types: J, L, R, S and U; +/- 5°C (+/-9°F) for types: B, E, K, N and T (using the TELEFAST accessory with its internal cold junction compensation).
Maximum error for hardened modules in the temperature range -25...70 °C (-13...140 °F) (2)
+/- 5.5°C (+/-9°F) for types: J, L, R, S and U; +/- 6°C (+/-10.8°F) for types: B, E, K, N and T (using the TELEFAST accessory with its internal cold junction compensation).
Temperature drift
30 ppm/°C
Resistive Input Characteristics
The characteristics of the resistive inputs of the BMX ART 0414(H) and BMX ART 0814(H) are as follows:
Range
400 Ω; 4000 Ω
Type measurement
2, 3, 4 wires
Maximum resolution
12.5 mΩ in the range 400 Ω
125 mΩ in the range 4000 Ω
Measurement error for standard module:
  • At 25 °C (77 °F)
0.12% of FS (1)
  • Maximum in the temperature range 0...60 °C (32...140 °F)
0.2% of FS (1)
Measurement error for ruggedized module:
  • At 25 °C (77 °F)
0.12% of FS (1)
  • Maximum in the temperature range -25...70 °C (-13...140 °F)
0.3% of FS (1)
Temperature drift
25 ppm/°C
Legend:
(1) FS: Full Scale