NOVUS AUTOMATION
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TxRail-USB
TEMPERATURE TRANSMITTER - OPERATING MANUAL – V1.0x H
INTRODUCTION
TxRail-USB
is an USB configurable DIN rail mount temperature
transmitter. It allows selection and configuration of input type,
measurement range, output type and calibration. Its output can be
set to either loop powered 4-20 mA or 0-10 Vdc. Highly accurate and
user-friendly, the
TxRail-USB
performs well from simple to
sophisticated measurement applications.
The output current is linearized according to the selected input
sensor and adjusted to the configured range.
SPECIFICATIONS
Sensor input:
User defined. The supported sensors are listed in
Table 1
, along with their maximum ranges.
Thermocouples
: Types J, K, R, S, T, N, E and B, according to
IEC 60584 (ITS-90). Impedance >> 1 M
Ω
Pt100
: Type 3-wire, Excitation 0.8 mA,
α
= 0.00385, according
IEC 60751 (ITS-90).
For 2-wire sensors, tie terminals 3 and 4 together.
Pt1000
: Type 3-wire, Excitation 0.8 mA,
α
= 0.00385, according
IEC 60751 (ITS-90).
For 2-wire sensors, tie terminals 3 and 4 together.
NTC R
25°C
: 10 k
Ω
±1 %, B
25/85
= 3435
Voltage
: 0 to 50 mVdc.
Impedance >> 1 M
Ω
Sensor Type
Maximum Measurement
Range
Minimum Measurement
Range
Voltage
0 to 50 mV
5 mV
Thermocouple
K
-150 to 1370 °C
100 °C
Thermocouple
J
-100 to 760 °C
100 °C
Thermocouple
R
-50 to 1760 °C
400 °C
Thermocouple
S
-50 to 1760 °C
400 °C
Thermocouple
T
-160 to 400 °C
100 °C
Thermocouple
N
-270 to 1300 °C
100 °C
Thermocouple
E
-90 to 720 °C
100 °C
Thermocouple
B
500 to 1820 °C
400 °C
Pt100
-200 to 650 °C
40 °C
Pt1000
-200 to 650 °C
40 °C
NTC
-30 to 120°C
40 °C
Table 1
– Sensors accepted by the transmitter
Switch-on delay
: < 2.5 s. The accuracy is only guaranteed after 15 min.
Terms of reference:
ambient: 25 ° C; voltage: 24 Vdc, load: 250
Ω
;
settling time: 10 minutes
Temperature Effect:
< ±0.16 % / 25 °C
Response time:
typical 1.6 s.
Maximum voltage allowed at input terminals no sensor:
3 V.
RTD current:
800
µ
A.
RTD cable resistance effect
: 0.005 °C /
Ω
Maximum allowable cable resistance for RTD:
25
Ω
.
Sensor Type
Typical
Accuracy
Maximum
Accuracy
Pt100 / Pt1000
(-150 to 400°C)
0.10%
0.12%
Pt100 / Pt1000
(-200 to 650°C)
0.13%
0.19%
mV, K, J, T, E, N, R, S, B
0.1 % (
*
)
0.15 % (
*
)
NTC
0.3 °C
0.7 °C
Table 2
– Calibration error, percentage of the full measurement range.
(*) Add cold junction compensation:
< ± 1 °C.
Power supply influence
: 0.006 % / V typical (percentage of the full
measure range).
Output (4-20 mA)
:
4-20 mA or 20-4 mA current, 2-wired; linearized
according to the selected sensor.
Output Resolution (4-20 mA)
:
2
µ
A.
Output (0-10 Vdc)
: 0-10 Vdc or 10-0 Vdc voltage, linear with respect
to the measured temperature for the selected sensor.
Output Resolution (0-10 Vdc)
: 0.0025 V (12 bits)
Power supply:
10 to 35 Vdc (output 4-20 mA) and
12 to 35 Vdc (output 0-10 Vdc).
Maximum load (RL)
: RL (máx.) = (Vdc – 10) / 0.02 [
Ω
]
Where: Vdc= Power supply voltage (10-35 Vdc)
Operating Temperature
: -40 to 85 °C
Humidity
: 0 to 90 % RH
Electromagnetic Compatibility:
EN 61326-1:2006
No electrical isolation between input and output.
Internal protection against polarity inversion.
Cold junction compensation for thermocouples.
Connection Wire Cross Section
: 0.14 a 1.5 mm²
Screw Tightening
: 0.8 Nm.
Housing
: ABS UL94-HB.
Certification
: CE
CONFIGURATION
Changes to the configuration are possible through the
TxConfig II
software, provided free of charge.
A
TxRail-USB
Setup Kit consisting of the
TxConfig II
software and
USB cable can be purchased from the manufacturer or any authorized
distributor. The
TxConfig II
software is continuously updated and new
versions can be downloaded at no charge from the manufacturer’s
website. To install, execute the
TxConfigIISetup.exe
file and follow the
instructions.
