MODEL: BSN

BSN SPECIFICATIONS

ES-3119 Rev.10 Page 1/3

http://www.m-system.co.jp/

Space-saving Two-wire Signal Conditioners B-UNIT

INPUT LOOP POWERED ISOLATOR

Functions & Features

• Loop-powered design eliminates output loop power supply

• 500 V DC input-to-output isolation

• 2 isolators housed in one enclosure

• 350 Ω output drive with 4 – 20 mA

• High-density mounting

Typical Applications

• Isolation between control room and field instrumentation,

between telemetering system and input device

• Eliminates ground problems in existing systems

thanks to easiness of application without requiring

additional power wiring

26 (1.02)

93

(3.66)

mm (inch)

137

(5.39)

MODEL: BSN–[1][2][3][4]

ORDERING INFORMATION

• Code number: BSN-[1][2][3][4]

Specify a code from below for each of [1] through [4].

(e.g. BSN-2AA/Q)

• Specify the specification for option code /Q

(e.g. /C01/S01)

[1] NO. OF CHANNELS

1: 1 channel

2: 2 channels

[2] INPUT

Current

A: 4 – 20 mA DC

H: 10 – 50 mA DC

[3] OUTPUT

Current

A: 4 – 20 mA DC

Voltage

6: 1 – 5 V DC

[4] OPTIONS

blank: none

/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to M-System's 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)

Isolation: Input to output; between channels

Zero adjustment (front)

Voltage output: -5 to +5 %

Current output: -0.5 to +0.5 %

Span adjustment (front)

Voltage output: 95 to 105 %

Current output: 98.5 to 101.5 %

INPUT & OUTPUT

■ Input 4 – 20 mA DC / Output 1 – 5 V DC

Equivalent input impedance: Approx. 250 Ω with 20 mA

input

Operational range: 3 – 22 mA DC

(Accuracy is assured within 4 – 22 mA)

Load resistance: ≥ 50 kΩ

■ Input 10 – 50 mA DC / Output 1 – 5 V DC

Equivalent input impedance: Approx. 100 Ω with 50 mA

input

Operational range: 7 – 55 mA DC

(Accuracy is assured within 8 – 55 mA)

Load resistance: ≥ 50 kΩ

■ Input 4 – 20 mA DC / Output 4 – 20 mA DC

Equivalent input impedance: 230 Ω plus load resistance with

20 mA input

Operational range: 3 – 22 mA DC

(Accuracy is assured within 4 – 22 mA)

Load resistance: 50 – 350 Ω (min. 50 Ω required for

adequate operation)

■ Input 10 – 50 mA DC / Output 4 – 20 mA DC

Equivalent input impedance: 90 Ω + [load resistance×0.16]