N-DR800 NUCLEAR GRADE DRAFT RANGE PRESSURE TRANSMITTER
- Fully analog, loop powered, 4-20 mA
- Operates from 12 to 45 VDC terminal voltage
- Nuclear grade (CGD/OEM)
- IEEE 344 seismic/mild environment
- Designed for electromagnetic compatibility with other nuclear plant I&C
- EMC per NRC RG1.180
The N-DR800 is a nuclear-qualified, analog, loop powered draft range pressure transmitter for very low-pressure measurement. It has a full-scale range as low as ±0.25” H2O, making it ideal for air flow control applications. It can be turned down to ±0.1” H2O, with higher full-scale ranges to ±100” H2O available. Offering 0.5% accuracy and an operating temperature range of -20°F to+185°F, the total combined temperature effects are less than 3%/100°F.
The N-DR800 differential pressure transmitter made in partnership between Validyne Engineering and Curtiss-Wright, is a nuclear qualified analog loop powered transmitter for very low-pressure measurement. It has a full-scale range as low as ±0.25” H2O, making it ideal for air flow control applications. It can be turned down to ±0.1” H2O; higher full-scale ranges to ±100” H2O are available. The DR800 offers 0.5% accuracy and an operating temperature range of -20°F to +185°F. The total combined temperature effects are less than 3%/100°F.
Construction
- Gasketed, threaded covers on the electrical enclosures (NEMA 4 enclosure).
- Dual electrical cavities in the electrical housing keep field wiring separate from the electrical compartment.
- ¼” NPT female pressure connections on 2.125” centers
- Pressure connections on front and rear
- Sensor body and wetted parts made from 410 SST
- IEEE 344 Seismic qualified stainless-steel mounting bracket
Nuclear Specifications
IEEE 323/344 Class 1E Mild Environment where seismic is the only design basis event (DBE) of consequence: Seismic qualification envelopes the Generic Seismic Profile per EPRI TR-107330 Figure below with 5% damping horizontal and vertical. EMC Compliance to USNRC RG 1.180.
More Features:
- Wetted parts traceability
- Full Range as low as 0.25” H2O without turndown or amplification
- Low ambient temperature effects improve very low measurements
- Selectable resolution on zero and span adjustments ease critical calibrations
- Sensor body and wetted parts made from 410 SST for corrosion resistance
Support here (Links to manual, data sheet, others)
Our offers
- Full range as low as 0.25” H2O without turndown or amplification
- FM Approval Class 1 Div 2, Group B, C and D
- FM standards 3600, 3610, 3611, 3810
- Low ambient temperature effects to improve very low measurements
- Selectable resolution on zero and span adjustments to ease critical calibrations
- Integral 3½ digit liquid crystal display available
- 4-20 mA output signal
- Elevation & Suppression offset calibration