MODEL: W2RS

Space-saving Dual Output Signal Conditioners [1] INPUT RTD (2- or 3-wire)
Mini-MW Series 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)
RTD TRANSMITTER (Usable range: -200 to +650°C, -328 to +1202°F; min.span: 50°C, 90°F)
Functions & Features 4: Pt 100 (JIS'97, IEC)
• Accepts direct input from an RTD (Usable range: -200 to +650°C, -328 to +1202°F; min.span: 50°C, 90°F)
• Linearization 5: Pt 50 Ω (JIS'81)
• Burnout (Usable range: -200 to +500°C, -328 to +932°F; min.span: 100°C, 180°F)
• “Active bridge” circuit containing two constant current 6: Ni 508.4 Ω
sources allows large leadwire resistances up to 200 Ω (Usable range: -50 to +200°C, -58 to +392°F; min.span: 30°C, 54°F)
• Fast response type available C: Cu (Refer to ‘Cu INPUT’.)
0: Specify
Typical Applications Note: Consult us for 2-wire RTD
• Long distance transmission between the RTD and the
transmitter
• Combination with intrinsic safety barriers [2] OUTPUT 1
Current
A: 4 – 20 mA DC (Load resistance 750 Ω max.)
29.5 [1.16] B: 2 – 10 mA DC (Load resistance 1500 Ω max.)
C: 1 – 5 mA DC (Load resistance 3000 Ω max.)
D: 0 – 20 mA DC (Load resistance 750 Ω max.)
Model

88.5
E: 0 – 16 mA DC (Load resistance 900 Ω max.)
[3.49] F: 0 – 10 mA DC (Load resistance 1500 Ω max.)
G: 0 – 1 mA DC (Load resistance 15 kΩ max.)
ZERO

SPAN
Z: Specify current (See OUTPUT SPECIFICATIONS)
ZERO 124 Voltage
SPAN [4.88]
1: 0 – 10 mV DC (Load resistance 10 kΩ min.)
mm [inch]
2: 0 – 100 mV DC (Load resistance 100 kΩ min.)
3: 0 – 1 V DC (Load resistance 1000 Ω min.)
4: 0 – 10 V DC (Load resistance 10 kΩ min.)
MODEL: W2RS–[1][2][3]-[4][5] 5: 0 – 5 V DC (Load resistance 5000 Ω min.)
6: 1 – 5 V DC (Load resistance 5000 Ω min.)
ORDERING INFORMATION 0: Specify voltage (See OUTPUT SPECIFICATIONS)
• Code number: W2RS-[1][2][3]-[4][5]
Specify a code from below for each of [1] through [5]. [3] OUTPUT 2
(e.g. W2RS-4A6-M2/BL/CE/Q) Y: None
• Temperature range (e.g. 0 – 500°C) Current
• Special output ranges (For codes Z & 0) A: 4 – 20 mA DC (Load resistance 350 Ω max.)
• Specify the specification for option code /Q B: 2 – 10 mA DC (Load resistance 700 Ω max.)
(e.g. /C01/V01) C: 1 – 5 mA DC (Load resistance 1400 Ω max.)
For the input code C, specify also the following. If not D: 0 – 20 mA DC (Load resistance 350 Ω max.)
specified, Cu 10 Ω @25°C (usable range -140 – +260°C) will E: 0 – 16 mA DC(Load resistance 430 Ω max.)
be used. F: 0 – 10 mA DC (Load resistance 700 Ω max.)
• Input type (e.g. Cu 10 Ω) G: 0 – 1 mA DC (Load resistance 7000 Ω max.)
• Resistance range (e.g. 9.038 – 12.891 Ω) Z: Specify current (See OUTPUT SPECIFICATIONS)
Note: When the user requires a current and a voltage Voltage
output, specify the current to be the Output 1 which allows Same range availability as Output 1
a greater load.

W2RS SPECIFICATIONS ES-5513 Rev.20 Page 1/4

MG CO., LTD.
www.mgco.jp
 MODEL: W2RS
[4] POWER INPUT Adjustable individually for each output 1 and output 2.
AC Power Burnout protection: Upscale standard; downscale optional
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V, At burnout: Downscale ≤ -10 %, Upscale ≥ 110 %
47 – 66 Hz) Linearization: Standard (not available for the input code C)
(90 – 264 V for UL)
DC Power INPUT SPECIFICATIONS
R: 24 V DC Maximum leadwire resistance: 200 Ω per wire (3-wire)
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) Sensing current: 2 mA (Pt);1 mA (Ni 508.4 Ω)
R2: 11 – 27 V DC Refer to 'Cu Input' for the input code C.
(Operational voltage range 11 – 27 V, ripple 10 %p-p max.)
(Select ‘/N’ for ‘Standards & Approvals’ code.)
P: 110 V DC OUTPUT SPECIFICATIONS
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.) ■ DC Current: 0 – 20 mA DC
(110 V ±10 % for UL) Minimum span: 1 mA
Offset: Max. 1.5 times span
Load resistance: Output drive 15 V max. for Output 1;
[5] OPTIONS (multiple selections) 7 V max. for Output 2
Response Time (0 – 90 %) ■ DC Voltage: -10 – +12 V DC (up to 10 V for Output 2)
blank: Standard (≤ 0.5 sec.) Minimum span: 5 mV
/K: Fast Response (Approx. 25 msec.) Offset: Max. 1.5 times span
Burnout Load resistance: Output drive 1 mA max.; at ≥ 0.5 V
blank: Upscale burnout
/BL: Downscale burnout
Standards & Approvals (must be specified) INSTALLATION
/N: Without CE, UKCA or UL Power Consumption
/CE: CE marking •AC:
/UK: CE, UKCA marking Approx. 4 VA at 100 V
/UL: UL approval, CE marking Approx. 5 VA at 200 V
Other Options Approx. 6 VA at 240 V
blank: none •DC: Approx. 3 W
/Q: Option other than the above (specify the specification) Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
SPECIFICATIONS OF OPTION: Q (multiple selections) Weight: 200 g (0.44 lb)
COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating PERFORMANCE in percentage of span
/C03: Rubber coating (UL not available) Accuracy: ±0.2 %
ADJUSTMENT (Refer to ‘Cu INPUT’ for the input code C.)
/V01: Multi-turn fine adjustment (UL not available) Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
TERMINAL SCREW MATERIAL Refer to ‘Cu Input’ for the input code C.
/S01: Stainless steel (UL not available) Burnout response: ≤ 10 sec.
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
GENERAL SPECIFICATIONS Dielectric strength: 2000 V AC @1 minute (input to output
Construction: Plug-in 1 to output 2 to power to ground)
Connection: M3 screw terminals (torque 0.8 N·m)
Screw terminal: Chromated steel (standard) or stainless
steel
Housing material: Flame-resistant resin (black)
Isolation: Input to output 1 to output 2 to power
Overrange output: Approx. -10 to +120 % at 1 – 5 V
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)
W2RS SPECIFICATIONS ES-5513 Rev.20 Page 2/4

MG CO., LTD.
www.mgco.jp
 MODEL: W2RS
Cu INPUT Groups A, B, C, and D
■ INPUT (ANSI/ISA-12.12.01, CAN/CSA-C22.2 No.213)
• Sensing current (resistance span): UL/C-UL general safety requirements
140 Ω ≤ Span ≤ 300 Ω : 1 mA (UL 61010-1, CAN/CSA-C22.2 No.61010-1)
12 Ω ≤ Span < 140 Ω : 2 mA
8 Ω ≤ Span < 12 Ω : 3 mA
3.5 Ω ≤ Span < 8 Ω : 5 mA
• Max. leadwire resistance:
200 Ω or the value calculated using the equation below,
whichever is smaller.
Leadwire resistance(Ω) = (2500 - 100% resistance(Ω) ×
Sensing current(mA)) ÷ (3 × Sensing current(mA))
• Usable range:
3.5 Ω ≤ Resistance span(Ω) ≤ 300Ω
0 % resistance(Ω) ≥ 3.25 Ω
100 % resistance(Ω) ≤ (2500 – 3 × Leadwire resistance (Ω)
× Sensing current (mA)) ÷ Sensing current (mA)

■ PERFORMANCE
• Accuracy
Resistance span ≥ 20 Ω: ±0.2 %
Otherwise use the equation below:
Accuracy(%) = 0.02(Ω) ÷ Resistance span(Ω) × 100 +
0.1(%) × 40(mV) ÷ (Resistance span(Ω) × Sensing
current(mA))
• Temperature coefficient
Resistance span(Ω) × Sensing current(mA) ≥ 40(mV):
±0.015 %/°C
Otherwise use the equation below:
Temperature coefficient(%/°C) = 0.015(%/°C) × 40(mV) ÷
(Resistance span(Ω) × Sensing current(mA))

STANDARDS & APPROVALS

EU conformity:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive
EN 61010-1
Installation Category II
Pollution Degree 2
Input or output 1 or output 2 to power input:
Reinforced insulation (300 V)
Input to output 1 to output 2: Basic insulation (300 V)
RoHS Directive
UK conformity (UKCA):
The UK legislations and designated standards are
equivalent to the applicable EU directives.
(Refer to our website for more information about the
legislations and designated standards.)
Approval:
UL/C-UL nonincendive Class I, Division 2,
W2RS SPECIFICATIONS ES-5513 Rev.20 Page 3/4

MG CO., LTD.
www.mgco.jp
 MODEL: W2RS
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
6 [.23]

DIN RAIL
35mm wide 3 2 1
6 5 4
2–4.2x5
[.17x.20]

59 [2.32]
72 [2.83]
MTG HOLE
88.5 [3.48]

6 [.24] deep
53 [2.09]

11–M3 9 8 7
SCREW 11 10

[.16]
4
22 [.87]
29.5 [1.16]
21.5 [.87] 10 [.39] 84 [3.31]
114 [4.49] (4 [.16])

• When mounting, no extra space is needed between units.

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

Burnout
RTD
A 1 Isolation Z S
Reference
Resistor + Differential Output
B 2 –
Amplifier Driver
7 +
Constant
Current OUTPUT 1
B 4 Constant
8 –
Current Z S
5 Linearizer
Output
Driver
3 +
9 OUTPUT 2
6 –

10 U(+)
POWER
11 V(–)
Base Socket
Note: The section enclosed by broken line is only with 2nd output option.

Specifications are subject to change without notice.

W2RS SPECIFICATIONS ES-5513 Rev.20 Page 4/4

MG CO., LTD.
www.mgco.jp