ES-8895 Rev.2
6BFN
Field-mounted Two-wire
Signal Conditioners 6B-UNIT
SQUARE ROOT EXTRACTOR
Functions & Features
• IP66 / IP67 housing enables field mounting
• Stainless steel field housing selectable
• Providing a 4 – 20 mA DC signal proportional to the root of input signal from DP flowmeter
MODEL: 6BFN-0A[1][2][3]
ORDERING INFORMATION
• Code number: 6BFN-0A[1][2][3]
Specify a code from below for each of [1] through [3].
(e.g. 6BFN-0A0A1)
SAFETY APPROVAL
0
: None
INPUT
A
: 4 – 20 mA DC
[1] WIRING CONDUIT
0
: G 1/2
1
: 1/2 NPT
2
: M20 × 1.5
3
: PG 13.5
[2] ENCLOSURE MATERIAL
A
: Diecast aluminum
S
: Stainless steel casting
[3] MOUNTING BRACKET
0
: Without
1
: With
PACKAGE INCLUDES...
• Mounting screws
Bolt (M8 x 15): 4
Spring washer for M8: 4
Material
: Stainless steel 304
• Mounting bracket assembly (option):
Mounting bracket: 1
M10 U-bolt: 2
Nut for M10: 4
Spring washer for M10: 4
Material
: Stainless steel 304
Applicable pipe
: 1 1/2” min.; 2” max.
GENERAL SPECIFICATIONS
Degree of protection
: NEMA 4X, IP66/IP67
Wiring conduit:
See ‘Ordering information.’
Electrical connection
: M3 screw terminals
(torque 0.6 N·m)
Materials
•
Transmitter housing
: Diecast aluminum
Screw terminals
: Nickel-plated steel
•
Enclosure
: Diecast aluminum or stainless steel casting (equivalent to type 316); silver color, epoxy resin coated
Isolation
: Input or output to outdoor enclosure
Zero adjustment
: 0 – 5 % (behind the access cover)
Span adjustment
: 100 – 103 % (behind the access cover)
Low-end cutout
: Approx. 10 % (output); curve characteristics shown in the figure below
OUTPUT SPECIFICATIONS
Output
: 4 – 20 mA DC
Voltage drop per loop
: ≤ 5 V
INSTALLATION
Supply voltage
: Voltage required by differential pressure transmitter + 5 V
Operating temperature
: -5 to +70°C (23 to 158°F)
Weight
:
• Unit
Approx. 1.5 kg (2.9 lb), aluminium
Approx. 4.2 kg (8.8 lb), stainless steel
• Mounting bracket assembly (option)
Approx. 0.78 kg (1.72 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.2 % (input 1 – 100 %)
Temp. coefficient
: ±0.03 %/°C (±0.02 %/°F)
Response time
: ≤ 0.5 sec. (0 – 90 %)
Ripple
: 0.1 %p-p max.
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 1500 V AC @ 1 minute
(input or output to outdoor enclosure )
EXTERNAL DIMENSIONS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM