Novus TxRail-USB User Manual

TxRail-USB
TEMPERATURE TRANSMITTER – USER MANUAL – V2.0x C
1.

INTRODUCTION

TxRail-USB is an advanced programmable temperature transmitter
for DIN rail mounting. Its microprocessor technology accepts
Configuration via USB, which allows you to select the input type, the
measurement range, the output type, and to perform the calibration
process. The output can be configured via software for 4-20 mA or 0-
10 Vdc.
The output current or voltage is linearized according to the selected
input sensor and adjusted to the configured range.
2.

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 MΩ
Pt100: Excitation: 0.8 mA, α = 0.00385, according to IEC 60751
(ITS-90).
For 2-wire sensors, tie terminals 3 and 4 together.
Pt1000: 3-wire type, Excitation: 0.8 mA, α = 0.00385, according to
IEC 60751 (ITS-90).
For 2-wire sensors, tie terminals 3 and 4 together.
NTC R : 10 kΩ ±1 %, B
25°C 25/85
Voltage: 0 to 50 mVdc. Impedance >> 1 MΩ
0 to 100 mVdc. Impedance >> 1 MΩ (*)
(*) Feature available for devices with firmware version
starting at V2.0x.
Maximum Measurement
Sensor Type
Range
Voltage 0 to 50 mV
Voltage 0 to 100 mV
K -150 to 1370 °C
Thermocouple
J -100 to 760 °C
Thermocouple
R -50 to 1760 °C
Thermocouple
S -50 to 1760 °C
Thermocouple
T -160 to 400 °C
Thermocouple
N -270 to 1300 °C
Thermocouple
E -90 to 720 °C
Thermocouple
B 500 to 1820 °C
Thermocouple
Pt100 -200 to 650 °C
Pt1000 -200 to 650 °C
NTC -30 to 120 °C
Table 1 – Sensors accepted by the transmitter
Switch-on delay: < 2.5 s. The accuracy is only guaranteed after 15
minutes.
Reference terms: Ambient: 25 ° C; voltage: 24 Vdc, load: 250 Ω;
settling time: 10 minutes.
NOVUS AUTOMATION
= 3435
Minimum Measurement
Range
5 mV
10mV
100 °C
100 °C
400 °C
400 °C
100 °C
100 °C
100 °C
400 °C
40 °C
40 °C
40 °C
Temperature effect: < ±0.16 % / 25 °C
Response time: Typical 1.6 s.
Maximum allowable voltage at input terminals: 3 V
RTD current: 800 µA
RTD cable resistance effect: 0.005 °C /
Maximum allowable cable resistance for RTD: 25
Sensor Type
Pt100 / Pt1000
(-150 to 400 °C)
Pt100 / Pt1000
(-200 to 650 °C)
K, J, T, E, N, R, S, B
mV
NTC
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; and
proportional to the configured range.
Output resolution (4-20 mA): 2 µA
Output (0-10 Vdc): 0-10 Vdc or 10-0 Vdc voltage, and proportional
to the configured range.
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 (max.) = (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, UKCA
Ω
Ω
Typical Maximum
Accuracy Accuracy
0.10 % 0.12 %
0.13 % 0.19 %
0.1 % (*) 0.15 % (*)
0.1 % 0.15 %
0.3 °C 0.7 °C
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