ES-5463 Rev.8
M8RS
Dual Output Super-mini Signal Conditioners Pico-M Series
RTD CONVERTER
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: M8RS-[1][2]-R[3]
ORDERING INFORMATION
• Code number: M8RS-[1][2]-R[3]
Specify a code from below for each of [1] through [3].
(e.g. M8RS-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 us 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 our 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)
INSTALLATION
Current consumption
: Approx. 30 mA (50 mA for current output)
Operating temperature
: 0 to 55°C (32 to 131°F)
Operating humidity
: 30 to 95 %RH (non-condensing)
Mounting
: Installation Base (model: M8BSx)
Weight
: 70 g (2.5 oz)
PERFORMANCE in percentage of span
Accuracy
: ±0.2 %
Temp. coefficient
: ±0.02 %/°C (±0.01 %/°F)
Response time
: ≤ 0.2 sec. (0 – 90 %)
Burnout response
: ≤ 10 sec.
Line voltage effect
: ±0.1 % over voltage range
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
:
1500 V AC @1 minute (input to output 1 or output 2 or power to ground)
500 V AC @1 minute (output 1 to output 2 to power)
SWC test
: ANSI/IEEE-C37.90.1-1989
EXTERNAL DIMENSIONS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM