Dwyer Instruments TBU-00 Specifications-Installation And Operating Instructions

Model TBU-00 Temperature Transmitter
Specifications - Installation and Operating Instructions
The Model TBU-00 Temperature Transmitter is a high precision temperature
transmitter designed to easily mount in most temperature sensor instrument
enclosures. The universal input reduces inventory while the micro-USB port facilitates
easy configuration, and calibration in the lab or in the field. The versatile TBU
model allows for selection and configuration of input type, measurement range, and
calibration. The output can be set as either direct 4 to 20 mA, or reverse 20 to 4 mA,
through easy to use configuration software.

Configuration

During the setup, the transmitter is powered by the USB, and does not require an
external power supply. See Figure 1. The transmitter setup can also be made by
connecting it to the loop using the loop power supply. There is no electrical insulation
between the transmitter and the communication port (interface), therefore do not
configure the transmitter when it is connected to the process.
POWERED
CURRENTS
LOOP TRANSMITTER
Figure 1: USB cable connections

FACTORY SETTING AND CONFIGURATION

When the transmitter is used with the factory setting, no further action is required
and the transmitter is ready to be installed. Changes to the configuration are possible
through the TBU software, provided free of charge on the Dwyer website. The factory
setting for the TBU is for a Pt100 3-wire sensor with a range of 0 to 100°C with 0°C
zero correction and an output of 4 to 20 mA.
The USB communication port (micro-USB) of the TBU-00 is not
CAUTION
electrically insulated from the transmitters input. Connection while
equipment is powered may result in equipment damage.
After these connections, the user must run the TBU software. See Figure 2 for software
screen.
The fields in the software screen pictured in Figure 2 mean:
1. General Information: This field shows information that identifies the transmitter.
This information could be sent to Dwyer Instruments when additional technical
assistance is requested.
2. Sensor: Select the type of sensor to be used.
3. Measuring Range: Sets the measurement range of the transmitter.
Lower Range Limit: Equivalent temperature for a current of 4 mA.
Upper Range Limit: Equivalent temperature for a current of 20 mA.
Sensor Range: The values chosen cannot exceed the range of the sensor.
Minimum Range: Do not set a lower band (span) than the minimum range indicated.
4. Sensor Failure: Establishes the output behavior when the transmitter indicates a
failure.
Minimum: Output current goes to < 3.6 mA (down-scale), typically used for
refrigeration.
Maximum: Output current goes to > 22.0 mA (up-scale), typically used for heating.
5. Zero Offset: Offset allowing for small deviations presented in the transmitter output.
6. Send Configuration: Once set, the setup will be uploaded to the transmitter.
7. Read Configuration: Reads the current setup in the connected transmitter.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
PLUG A
MICRO B USB CABLE
TO PC USB PORT
13/16 [20.5]

SPECIFICATIONS

Input: Thermocouples J, K, R, S, T, N, E, and B; 2, 3, or 4 wire Pt100 RTD, 2 or 3
wire Pt1000 RTD, 2 wire NTC thermistor, or 0 to 50 mV voltage.
Output: Linearized 4 to 20 mA, 2 wire or 20 to 4 mA loop powered.
Transmitter Type: 2, 3, or 4 wire.
Temperature Limits: -40°F to 185°F (-40 to 85°C).
Power Requirements: 10 to 35 VDC.
Accuracy: See chart below.
Temperature Drift: < ±0.16% / 25°C.
Response Time: 1.6 s, typical.
Weight: 1.4 oz (40 g).
Agency Approvals: CE.
ACCURACY CHART
Max. Temperature
Input Type Range
Voltage 0 to 50 mV
Thermocouple J -148 to 1400°F
(-100 to 760°C)
Thermocouple K -238 to 2498°F
(-150 to 1370°C)
Thermocouple R/S -58 to 3200°F
(-50 to 1760°C)
Thermocouple T -256 to 752°F
(-160 to 400°C)
Thermocouple N -454 to 2372°F
(-270 to 1300°C)
Thermocouple E -130 to 1328°F
(-90 to 720°C)
Thermocouple B 932 to 3308°F
(500 to 1820°C)
Pt100/Pt1000 RTDs -328 to 1202°F
(-200 to 650°C)
NTC Thermistor
-22 to 248°F
(-30 to 120°C)
Figure 2: Software screenshot
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin T-TBU-00
1-23/32 [43.5]
Min. Temperature
Range Accuracy (Typical)
5 mV ±0.1% FS
212°F (100°C) ±0.1% FS
212°F (100°C) ±0.1% FS
752°F (400°C) ±0.1% FS
212°F (100°C) ±0.1% FS
212°F (100°C) ±0.1% FS
212°F (100°C) ±0.1% FS
752°F (400°C) ±0.1% FS
104°F (40°C) ±0.13% FS
104°F (40°C) ±0.3°C
www.dwyer-inst.com
e-mail: info@dwyermail.com