MODEL: M8RS1

M8RS1 SPECIFICATIONS

ES-5379 Rev.5 Page 1/3

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

Dual Output Super-mini Signal Conditioners Pico-M Series

RTD CONVERTER

(CE)

Functions & Features

• Accepting direct input from an RTD and providing two

isolated process signals

• Linearization

• Burnout protection

• "Active bridge" circuit containing two constant current

sources allows large leadwire resistances up to 200 Ω

• Space-saving, easy-to-maintain, multi-channel installation

base

MODEL: M8RS1-[1][2]-R[3]

ORDERING INFORMATION

• Code number: M8RS1-[1][2]-R[3]

Specify a code from below for each of [1] through [3].

(e.g. M8RS1-46A-R/BL/Q)

• Temperature range (e.g. 0 – 500°C)

• Specify the specification for option code /Q

(e.g. /C01 /V01)

[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 +850°C, -328 to +1562°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)

6: Ni 508.4 Ω

(Usable range: -50 to +200°C, -58 to +392°F; min.span: 30°C, 54°F)

0: Specify

Note: Consult M-System for 2-wire RTD

[2] OUTPUT 1 / OUTPUT 2

6A: 1 – 5 V DC (Load resistance 2500 Ω min.)

/ 4 – 20 mA DC (Load resistance 300 Ω max.)

44: 0 – 10 V DC (Load Resistance 5000 Ω min.)

/ 0 – 10 V DC (Load Resistance 5000 Ω min.)

55: 0 – 5 V DC (Load resistance 2500 Ω min.)

/ 0 – 5 V DC (Load resistance 2500 Ω min.)

66: 1 – 5 V DC (Load resistance 2500 Ω min.)

/ 1 – 5 V DC (Load resistance 2500 Ω min.)

POWER INPUT

DC Power

R: 24 V DC

(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[3] 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 M-System's web site.)

/C01: Silicone coating

/C02: Polyurethane coating

/C03: Rubber coating

ADJUSTMENT

/V01: Multi-turn fine adjustment

RELATED PRODUCTS

• Installation Base or Single Mount Base Socket (model:

M8BSx)

This unit must be mounted on dedicated base or socket.

GENERAL SPECIFICATIONS

Construction: Plug-in

Mounting screw: M3 screw (torque 0.3 N·m)

Housing material: Flame-resistant resin (black)

Power supply: Via the Installation Base terminals

(model: M8BSx)

Isolation: Input to output 1 to output 2 to power

Zero adjustment: -2 to +2 % (front)

Span adjustment: 98 to 102 % (front)

At burnout: Downscale ≤ -10 %, Upscale ≥ 110 %

Linearization: Standard

INPUT SPECIFICATIONS

Maximum leadwire resistance: 200 Ω per wire (3-wire)

Sensing current: 2 mA (Pt); 1 mA (Ni 508.4 Ω)