TxRail-USB Temperature Transmitter
0555 0035-01, 0555 0035-02
0141 0315-951 27.09.2021
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
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Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com
3
I
NTRODUCTION
The 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 or voltage is linearized according to the selected input sensor and adjusted to the configured range.
4
T
ECHNICAL
S
PECIFICATIONS
Sensor Input
User defined. The supported sensors are listed in Table 1, along with their maximum
ranges.
Maximal Voltage on the Sensor terminals 3 V
Thermocouples
Type J, K, R, S, T, N, E and B, according to DIN EN 60584 (ITS-90). Impedance
>> 1 MΩ
Pt100
Excitation 0.8 mA,
α
= 0.00385, according to DIN EN 60751 (ITS-90).
For 2-wire sensors, terminals 3 and 4 must be short circuited.
Pt1000
Excitation 0.8 mA,
α
= 0.00385, according to DIN EN 60751 (ITS-90).
For 2-wire sensors, terminals 3 and 4 must be short circuited.
NTC R
25°C
10 k
Ω
±1 %, B
25/85
= 3435
Voltage
0 … 50 m VDC. Impedance >> 1 M
Ω
Sensor type
Maximal
Minimal
Range
Linearisation span
Spannung
0 … 50 mV
5 mV
Thermoelement
K
-150 … 1370 °C
100 °C
Thermoelement
J
-100 … 760 °C
100 °C
Thermoelement
R
-50 … 1760 °C
400 °C
Thermoelement
S
-50 … 1760 °C
400 °C
Thermoelement
T
-160 ... 400 °C
100 °C
Thermoelement
N
-270 ... 1300 °C
100 °C
Thermoelement
E
-90 ... 720 °C
100 °C
Thermoelement
B
500 … 1820 °C
400 °C
Pt100
-200 ... 650 °C
40 °C
Pt1000
-200 ... 650 °C
40 °C
NTC
-30 ... 120°C
40 °C
T
ABELLE
1
SUPPORTED
S
ENSORS
Terms of reference
Ambient 25 °C; Voltage: 24 VDC, Load: 250
Ω
; Setting time: 10 min
Temperature effects
< ±0,16 % / 25 °C
Switch-on delay
typical 2,5 s . the accuracy is guaranteed only after 15 minutes
Excitation
Pt100, Pt1000, NTC
800
µ
A
Wiring
Pt100, Pt1000, NTC
Maximal allowable cable resistance 25
Ω
Cable resistance effect 0,005°C /
Ω
Accuracy
Sensor
Typical
Max.
Pt100 / Pt1000 (-150 .. 400°C)
0,10 %
0,12%
Pt100 / Pt1000 (-200 .. 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
T
ABELLE
2
Sensor accuracy
(*) Add cold junction compensation:
< ± 1 °C
Power supply influence
0,006 % / V typical (% of FS ).
Output
4-20 mA
4-20 mA or 20-4 mA, 2-wire, linear, proportional to the configured range
