Emerson Rosemount 644h, Reference Manual

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Reference Manual
00809-0100-4728, Rev HA
December 2002
Models 644H and 644R
A-12
The following table lists the necessary requirements to specify a custom
configuration.
.
STAINLESS STEEL
HOUSING
Biotechnology,
Pharmaceutical
Industries, and Sanitary
Applications
Weight
Enclosure Rating
NEMA 4X, IP66, and IP68
Materials of Construction
Housing and Standard Meter Cover
• 316L SST
Cover O-Ring
• Buna-N
LCD Display Cover
• 316L SST
• Glass
Surface
Surface finish is polished to 32 RMA. Laser etched product marking on
housing and standard covers.
Option Code
Requirements/
Specification
C1: Factory Configuration Data
(CDS required) Date: day/month/year
Descriptor: 16 alphanumeric characters
Message: 32 alphanumeric character
Analog Output: Alarm and saturation levels
C2:Transmitter – Sensor
Matching The transmitters are designed to accept Callendar-Van
Dusen constants from a calibrated RTD. Using these
constants, the transmitter generates a custom curve to
match the sensor-specific curve. Specify a Series 65, 65, or
78 RTD sensor on the order with a special characterization
curve (V or X8Q4 option). These constants will be
programmed into the transmitter with this option
A1: NAMUR-
Compliant,
High Alarm High Alarm = 21.0 mA
Upscale Saturation = 20.5 mA
CN: NAMUR-
Compliant,
Low Alarm Low Alarm = 3.6 mA
Downscale Saturation = 3.8 mA
C4: Five Point Calibration Will include 5-point calibration at 0, 25, 50, 75, and 100%
analog and digital output points. Use with Calibration
Certificate Q4.
F6: 60 Hz Line Filter Calibrated to a 60 Hz line voltage filter instead of 50 Hz filter
Option Code Standard Cover Meter Cover
S1 840 g (27 oz) 995 g (32 oz)
S2 840 g (27 oz) 995 g (32 oz)
S3 840 g (27 oz) 995 g (32 oz)
S4 840 g (27 oz) 995 g (32 oz)