ES-3135 Rev.8
BLC
Space-saving Two-wire Signal Conditioners B-UNIT
STRAIN GAUGE TRANSMITTER
Functions & Features
• Used in conjunction with bridge type strain gauges utilized in load cells, pressure transducers, etc.
• Supplying the required excitation voltage and providing appropriate DC output signal
• Excitation in pulses enables use with strain gauges of the bridge resistance 350 Ω
• Monitor terminals provided
• High-density mounting
Typical Applications
• Weighing system for tanks, hoppers, silos
• Weighing system using cranes
• Float level meter utilizing strain gauges
MODEL: BLC–[1][2]
ORDERING INFORMATION
• Code number: BLC-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. BLC-2/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01)
[1] INPUT STRAIN GAUGE
2
: 2 mV/V
0
: Specify
[2] OPTIONS
blank
: none
/Q
: With options (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
: 0 – 80 % (front)
Span adjustment
: 100 – 20 % (front)
INPUT SPECIFICATIONS
Input
: Bridge voltage from load cells
Rated output from strain gauge
: 2 mV/V
Nominal bridge resistance
: 350 Ω minimum
Excitation
: 5 V voltage pulse
OUTPUT SPECIFICATIONS
Output
: 4 – 20 mA DC
Load resistance vs. supply voltage
: Load Resistance (Ω) = (Supply Voltage (V) – 13 (V)) ÷ 0.02 (A)
(including leadwire resistance)
INSTALLATION
Supply voltage
: 13 – 28 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
: ±0.02 %/°C (±0.01 %/°F)
Response time
: ≤ 0.5 sec. (0 – 90 %)
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM