T900 series temperature transmitters are designed to fit into a standard molded terminal heads used on RTD and thermocouple assemblies to provide a 4-20 mA transmission signals. It is a cost effective solution for all temperature measuring process. It is accurate, durable and reliable. Numerous configurations for measurement in many deferent mediums are offered. Generally the transmitter produces a linear 4-20 mA output carried on a two-wire system. The transmitter is supplied factory calibrated, but also has zero and span potentiometers for a field adjustment.
■ Two wire 4-20 mA current output signals
■ Universal input signals
- RTD temperature sensor
- T/C elements
- mV, V, mA, DC signals
■Programmable function setting
- Input signal type
- Measuring range
- Burnout Low/High setting
- mA output offset
■ Excellent accuracy and a long term stability
■ Low cost effective
Excitation voltage : 18 ~ 30 V DC
(Noise range:20 mVp-p)
Load resistance max : 600 Ω with 24 V
Influence of excitation : 0.01 % FSO/V
Reverse polarity : Protected
Shock resistance : No change in performance after 20Gs
Vibration : 0.1 g max.
Response time (10 ~ 90 %) : ±500 mSec.
Adjustment range : Free
Accuracy : ±0.2 % FSO
Non - linearity : Better than 0.10 % FSO
Repeatability : Better than 0.05 % FSO
Long term stability : Better than 0.05% FSO per month
Cutoff frequency : ±1 kHz
Ambient temperature limits : -10 ~ 70 ℃
Ambient humidity limits : 10 to 90 % R.H
Temperature sensor type : See table "Sensor type, range and accuracy"
Signal source : See table "Sensor type, range and accuracy"
Current output : 4 ~ 20 mA loop powered
Electrical connection type : 2-wire technique
Full scale output signal : 20 mA ±0.2 %
Zero measured output : 4 mA ±0.03 %
Sensor burnout : High (20.5 mA DC) or Low (3.9 mA)