ES-5145 Rev.5

M2EXT

Super-mini Signal Conditioners with
Display Mini-M M2E Series

THERMOCOUPLE TRANSMITTER

(PC programmable)
Functions & Features
• Accepts direct input from a thermocouple and provides a linearized process signal
• Adjustments with the front button
• Wide selection of thermocouples
• OEL display with good visibility
Typical Applications
• Small burnout sensing current enables long distance transmission with minimum offset drifts
• Electric furnace (isolation)
• No burnout type can connect to a single T/C in parallel with a recorder

MODEL: M2EXT–[1][2]

ORDERING INFORMATION

• Code number: M2EXT-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. M2EXT-M2/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01/SET)

INPUT – Field-selectable

Thermocouple
(PR), K (CA), E (CRC), J (IC), T (CC), B (RH), R, S, C (WRe 5-26),
N, U, L, P (Platinel II)

OUTPUT – Field-selectable

◆ DC Output
• Current output: 0 - 20 mA DC
• Voltage output: -5 - +5 V DC
• Voltage output: -10 - +10 V DC

[1] POWER INPUT

AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
47 – 66 Hz)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

[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
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
(No. ESU-5145)

RELATED PRODUCTS

• M2E configurator software (model: M2ECFG)
Downloadable at our web site.
A dedicated cable is required to connect the module to the PC. Please refer to the internet software download site or the users manual (EM-5147) for the M2E configurator for applicable cable types.

GENERAL SPECIFICATIONS

Construction: Plug-in
Connection: M3 screw terminals (torque 0.8 N·m)
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (gray)
Isolation: Input to output to power
Overrange output: Approx. -10 to +110 % (Not available for current output not greater than 0 mA)
Input zero fine adj. range: -10 to +10℃ (front button)
Input span fine adj. range: -10 to +10℃ (front button)
Output zero fine adj. range: -5 to +5% (front button)
Output span fine adj. range: 95 to 105% (front button)
Burnout protection: Upscale standard; downscale or no burnout optional by programming
(Set to "None" at item [51] Burnout, when the unit is connected with another instrument in parallel.)
Linearization: Standard
Cold junction compensation: CJC sensor attached to the
input terminals
Output setting: DIP Switch on side panel (refer to the instruction manual)
Configuration: Program with front buttons or Via PC.
Programmable features include: Refer to the parameter list.
Configurator connection: 2.5 dia. miniature jack;
RS-232-C level

DISPLAY

Display functions: Displays and sets measured range, engineering unit
Display size: Approx. 15.6 × 20.8 mm (0.61” × 0.82”)
Number of pixels: 68 × 95 (horizontal × vertical)
Character color: Yellow
Display life: Approx. 60000 hours
(Expected time for the Display brightness to be reduced to 50 % when the Display is used continuously with brightness setting 2 in 25 ℃)
Display type: OEL display
Display digit: Negative 5 digits, positive 6 digits (-99999 to 999999)
Decimal point position:
· Input display: None, number of decimal places 1 or 2
· Output display: Settable arbitrarily

INPUT SPECIFICATIONS

Input resistance: 1 MΩ min.
Burnout sensing: ≤ 0.2 μA
Measurement rang: -5 to +105% of input setting value
Refer to the operating manual (EM-5145-B) for changing input range, setting value.

OUTPUT SPECIFICATIONS

■ DC Current
Output range: 0 – 20 mA DC
Conformance range: 0 – 22mA DC
Minimum span: 1 mA
Offset: Lower range can be any specific value within the output range provided that the minimum span is maintained.
Load resistance: Output drive 15 V max.
(Not available to output less than 0 mA, output range may not be extended to -10 %)
■ DC Voltage
Output range: -5 - +5 V DC, -10 - +10 V DC
Conformance range: -6.0 - +6.0 V DC, -12 - +12 V DC
Minimum span: 250 mV, 1 V
Offset: Lower range can be any specific value within the output range provided that the minimum span is maintained.
Load resistance: Output drive 1 mA max.

INSTALLATION

Power Consumption
•AC:
Max. 4.5 VA at 100 V
Max. 6.5 VA at 200 V
Max. 8.5 VA at 264 V
•DC: Max. 2.3 W
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 10 to 85 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: Approx. 200 g (0.44 lb)

PERFORMANCE

Accuracy: Input accuracy + output accuracy
See CALCULATION EXAMPLES OF OVERALL ACCURACY.
Inversely proportional to the setting span.
Except the accuracy of input resistor.
Input accuracy: [Table 1 Accuracy value + Cold Junction Compensation Error 0.5°C (0.9°F)] or ±0.1 % of span, whichever is greater.
Display accuracy:
Input display: Input accuracy ±1 digit
Output display: Input accuracy + output accuracy ±1 digit
Output accuracy: ±0.04 % of max. output range
Cold junction compensation error:
±0.5°C at 25 ±10°C
±0.9°F at 77 ±18°F
(The described accuracy may be partially not
satisfied when the input temperature is below 0°C. Consult factory.)
Temp. coefficient (% of max. I/O range): ±0.015 %/°C (±0.008 %/°F)
Input resolution: Max. 20 bits
Output resolution: Max. 16 bits
Response time (filter time constant: 0 sec.): ≤ 0.5 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: 2000 V AC @1 minute (input to output to power to ground)

CALCULATION EXAMPLES OF OVERALL ACCURACY

[Example] Input Range K thermocouple, 0 – 1000°C, Output Range 0 – 20 mA, Output Setting 4 – 20 mA
■ Overall accuracy
• Input Accuracy
1) Absolute value accuracy (Table 1): 1.00°C
2) CJC error (0.5°C) added: 1.50°C
3) 1.50°C ÷ 1000°C × 100 = 0.15 %
4) 0.15 % > 0.1 % of span. ➠ 0.15 % is selected.
• Output Accuracy = Output Range Span (20 mA) ÷ Output Span Setting (16 mA) × 0.04 % = 0.05 %
Overall Accuracy = 0.15 + 0.05 = ±0.20 %

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 to power: Reinforced insulation (300 V)
Input to output: Basic insulation (300 V)
RoHS Directive