Specifications
73
SECTION 7: SPECIFICATIONS
7.1 Transmitter Specifications
Power Requirement
• 12 to 30 VDC
• Minimum of 12 VDC at 20 mA
Input Range
• 409-T: 1.0 to 40,000 pF
Output Range
• 4-20 mA
Accuracy
• ± 0.25% of range. Accuracy includes the combined
effects of linearity, hysteresis, and repeatability.
It refers to the transmitter only and is measured
at reference conditions of 25 degrees C ±1°, 10-
55% R.H. and 24 ±1.2 Vdc, using an admittance
standard (applied to the transmitter sensor
terminals) in place of the sensor.
Load Resistance
• Maximum Load Resistance = 750 ohms
• Minimum Load Resistance
With HART® Communications = 250 ohms
Without HART® Communications = 0 ohms
Temperature Effect
• ±1% of range per 50°F (30°C).
Supply Voltage Effect
• < 0.1% from 12 to 30 VDC.
Effect of Load Resistance
• < 0.1% for full resistance range at 24 VDC supply.
Response to Step Change
• < 1 second standard (to 90% of final value); 0-90
seconds available with delay.
Fail-Safe
• Low-Level Fail-Safe (LLFS) standard.
Also called direct-acting because current increases
as the level increases.
• High-level Fail-Safe (HLFS).
Also called reverse-acting because current
decreases as level increases.
There Are No Devices That Are Absolutely “Fail-Safe".
Fail-safe means that in the event of the most probable failures,
the instruments will fail safely. Probable failures include
things such as loss of power and transistor and component
failures. If your application needs absolute fail-safe, a back-
up instrument should be installed.
Ambient Temperature
• -40°F to +167°F (-40°C to 75°C)
Summary of Contents for RCT 10 series
Page 4: ......
Page 8: ...SECTION 1...
Page 26: ...SECTION 3...
Page 46: ...SECTION 4...
Page 57: ...Configuration Calibration 49 5 4 Set Up Procedures...
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Page 59: ...Configuration Calibration 51 5 4 Set Up Procedures Continued...
Page 66: ...SECTION 6...
Page 80: ...SECTION 7...
Page 86: ...APPENDIX A...
Page 87: ...Appendix A A 1 APPENDIX A APPROVAL DRAWINGS A 1 ATEX APPROVAL DRAWINGS...
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