·Some details are not shown. Please refer to specification sheets for all information.

M1EXT-2

2 Channel Super-mini Signal Conditioners
with Display M1E-2 Series

THERMOCOUPLE TRANSMITTER
(2 channels, PC programmable)

Functions & Features
• Accepts direct input from a thermocouple and provides a linearized process signal
• Wide selection of thermocouples
• 2 channels
• Adjustments with the front button
• 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: M1EXT-2–[1][2]

ORDERING INFORMATION
• Code number: M1EXT-2-[1][2]
Specify a code from below for each of [1] and [2].
  (e.g. M1EXT-2-M2/Q)
• Specify the specification for option code /Q
  (e.g. /C01/SET)

NO. OF CHANNELS
2: 2 channels

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 M-System's web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
 (No. ESU-5985)

RELATED PRODUCTS
• Installation base (model: M1E-BS2)
• M1E configurator software (model: M1ECFG)
Downloadable at M-System’s 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-5981) for the M1E configurator for applicable cable types.

GENERAL SPECIFICATIONS
Construction: Plug-in
Connection
• Connected to base with connector
• Base
 M2.6 screw terminals (torque: 0.5 N·m)
 Applicable solderless terminal size (M3)
Screw terminal: Nickel-plated steel
Housing material: Flame-resistant resin (black)
Isolation: Ch1.input to ch2.input to Ch1.output to ch2.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 [74] Burnout, when the unit is connected with another instrument in parallel.)
Cold junction compensation: CJC sensor attached to the
input terminals
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. 50000 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: None, number of decimal places 1 or 2

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-5985-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
Load resistance: Output drive 15 V max.
(e.g. 4 – 20 mA: 750 Ω [15 V ÷ 20 mA])
(Not available to output less than 0 mA, output range may not be extended to -5 %)
DC Voltage
Output range
: -5 - +5 V DC, -10 - +10 V DC
Conformance range: -6 - +6 V DC, -12 - +12 V DC
Minimum span: 250 mV, 1 V
Load resistance: 200 kΩ min.

INSTALLATION
Power Consumption
AC:
 ≤ 7 VA at 100 V
 ≤ 10 VA at 200 V
 ≤ 12 VA at 264 V
DC: ≤ 4 W
Operating temperature: -5 to +55°C (23 to 131°F)
Storage temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 10 to 85 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 120 g (0.26 lb) except base

PERFORMANCE
Accuracy: Input accuracy + output accuracy
See CALCULATION EXAMPLES OF OVERALL ACCURACY.
Inversely proportional to the setting span.
Input accuracy: [Table 1 Accuracy value + Cold Junction Compensation Error 0.5°C (0.9°F)]
Display accuracy
 Input display: Input accuracy ±1 digit
 Output display: Input accuracy + output accuracy ±1 digit
Output accuracy: (% of max. output range)
0 - 20 mA: ±0.06 %
-5 - +5 V: ±0.03 %
-10 - +10 V: ±0.03 %
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)
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: 1500 V AC @ 1 minute
(Ch1 input to Ch2 input to Ch1 output to Ch2 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 %
• Output Accuracy = Output Range Span (20 mA) ÷ Output Span Setting (16 mA) × 0.06 % = 0.075 %
Overall Accuracy = 0.15 + 0.075 = ±(0.225 % of span)

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)
RoHS Directive
  EN 50581

EXTERNAL VIEW

Refer to the operating manual (EM-5985-B) for detailed procedures.

TERMINAL ASSIGNMENTS

PARAMETER LIST

EXTERNAL DIMENSIONS unit: mm (inch)

MOUNTING REQUIREMENTS unit: mm (inch)

TERMINAL ASSIGNMENTS

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

M-System Co., Ltd.