TECHNICAL SPECIFICATION (T287)
|
| Input Types |
Thermocouples: |
|
Most standard
types & all special types using customer defined tables &
polynomials. |
|
RTD: |
|
2-, 3- & 4-wire, Pt-100, Ni-110, Ni-120 & other RTDs.
Includes Callandar-Van-Dusen adaptation and custom sensors linearization with
user defined tables and polynomials. |
|
DC
mV: |
|
-10 to 100mV |
|
Potentiometers: |
|
0 to 20k
Ohms |
|
Resistance: |
|
0 to 400 Ohms |
| General Specifications |
|
|
|
Minimum Range: |
|
2mV |
|
Output: |
|
4-20mA |
|
Supply Voltage: |
|
9-40VDC @ no load, reverse
polarity protected |
|
Maximum Load: |
|
Rmax =
(Vsupply – 9V) / 20mA |
|
Operating Temperature: |
|
-40 to 85°C |
|
Storage Temperature: |
|
-55 to
+125°C |
|
Humidity: |
|
0 to 95% RHNC |
|
Response Time: |
|
0.3 seconds,
to 90% of input (>3 updates/sec) |
|
Damping Factors: |
|
Programmable 0 to 64 seconds,
to 0 to 120% of input range, using configuration software |
|
Stability: |
|
Better than
±0.1% of span for 12 months |
|
Isolation: |
|
2000VDC, input to output |
|
RFI Protection: |
|
<1%
effect of span at 20-1000MHz and at field strength of 20V/m |
| Performance Specifications |
|
|
|
Output Resolution: |
|
0.015% of
span (2.5uA) |
|
Output Linearity (D/A): |
|
Better then 0.02% of output
span |
|
Sensor Linearization: |
|
Better than
0.1°C for RTDs |
|
|
|
Better than 0.2°C for
Thermocouple |
|
Cold Junction Compensation: |
|
Automatic to
within ±0.7°C for all thermocouples |
|
Temperature Stability: |
|
0.015%/°C combined zero
and span. |
|
Supply Voltage Effect: |
|
<
±0.003% per volt. |
|
Calibration: |
|
Automatic, unit includes all
calibration parameters. The unit performs periodic zero and span self-test, and
auto calibration. |
|
Input Linearity: |
|
Better than
0.01% of span (mV input) |
