validyne N-DR800 NUCLEAR GRADE DRAFT RANGE PRESSURE TRANSMITTER

validyne N-DR800 NUCLEAR GRADE DRAFT RANGE PRESSURE TRANSMITTER

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 RG1.180The 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.