ES-3113 Rev.9
BR
Space-saving Two-wire Signal Conditioners B-UNIT
RTD TRANSMITTER
Functions & Features
• Accepting direct input from an RTD and providing a standard 4 – 20 mA DC signal
• Linearization
• Burnout protection
• Monitor terminals
• Highdensity mounting
Typical Applications
• Converting into standard output
MODEL: BR–[1][2]
ORDERING INFORMATION
• Code number: BR-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. BR-4/BL/Q)
• Temperature range (e.g. 0 – 500°C)
• Specify the specification for option code /Q
(e.g. /C01/S01)
[1] INPUT RTD (2- or 3-wire)
1
: JPt 100 (JIS'89)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 50°C, 90°F)
3
: Pt 100 (JIS'89)
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 50°C, 90°F)
4
: Pt 100 (JIS'97, IEC)
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 50°C, 90°F)
5
: Pt 50 Ω (JIS'81)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 100°C, 180°F)
Note: Consult us for 2-wire RTD
[2] OPTIONS (multiple selections)
Burnout
blank
: Upscale burnout
/BL
: Downscale burnout
Other Options
blank
: none
/Q
: Option other than the above (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
TERMINAL SCREW MATERIAL
/S01
: Stainless steel
GENERAL SPECIFICATIONS
Construction
: Plug-in
Connection
: M3.5 screw terminals (torque 0.8 N·m)
Screw terminal
: Nickel-plated steel (standard) or stainless steel
Housing material
: Flame-resistant resin (black)
Zero adjustment
: -5 to +5 % (front)
Span adjustment
: 95 to 105 % (front)
Linearization
: Standard
INPUT SPECIFICATIONS
Maximum leadwire resistance
3-wire Pt 100: 5 Ω per wire
3-wire Pt 50 Ω: 2.5 Ω per wire
Sensing current
: 1 mA
OUTPUT SPECIFICATIONS
Output
: 4 – 20 mA DC
Load resistance vs. supply voltage:
Load Resistance (Ω) = (Supply Voltage (V) – 12 (V))
÷ 0.02 (A) (including leadwire resistance)
INSTALLATION
Supply voltage
: 12 – 60 V DC
Operating temperature
: -5 to +60°C (23 to 140°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Mounting
: Surface or DIN rail; Standard Rack Mounting Frame BX-16H available
Weight
: 150 g (0.33 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.2 %
Temp. coefficient
: ±0.05 %/°C (±0.03 %/°F)
Response time
: ≤ 0.5 sec. (0 – 90 %)
Burnout response
: Approx. 1 sec.
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM