MODEL: OTT2
GENERAL SPECIFICATIONS
Construction: Plug-in
OUTPUT SPECIFICATIONS
■ Control Output: External SSR
Transmission method: Light pulse (100 – 500 Hz)
Maximum transmission distance: 30 meters (98 ft)
Connection
(output from the OTT2)
Drive: Approx. 15 V; Z = 1.2 kΩ
0
I/O & power input: M3.5 screw terminals
Optical fiber: Connector
INSTALLATION
Power input
Screw terminal: Chromated steel (standard) or stainless
steel
•AC: Operational voltage range: rating ±10 %,
50/60 ±2 Hz, approx. 3 VA
Housing material: Flame-resistant resin (black)
Isolation: Input or control output to power
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)
Burnout: Upscale standard; downscale or no burnout
optional
•DC: Operational voltage range: rating ±10 %
ripple 10 %p-p max., approx. 2.6 W (110 mA at 24 V)
Operating temperature: -5 to +60°C (23 to 140°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 350 g (0.77 lb)
Linearization: Standard
Cold junction compensation: CJC sensor attached to the
input terminals (B thermocouple is without CJC as standard)
Power indicator LED: Green LED turns on when the power is
supplied.
PERFORMANCE in percentage of span
Accuracy: ±0.3 % (at over 400°C or 750°F for R, S and PR;
over 770°C or 1420°F for B)
(Overall performance with the OTT2 and OTR2 combined)
Cold junction compensation error
INPUT SPECIFICATIONS
Minimum span: 3 mV
(at 20°C ±10°C or 68°F ±18°F)
K, E, J, T & N: ±0.5°C or ±0.9°F
Offset: Max. 1.5 times span
Input resistance: 30 kΩ min.
Burnout sensing: 0.1 μA
S, R & PR: ±1°C or ±1.8°F
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
(at over 770°C or 1420°F for B)
Response time: ≤ 0.6 second (0 – 90 %) (Overall
performance with the OTT2 and OTR2 combined)
Burnout response: ≤ 10 sec.
Minimum span (in °C)
(PR): min. span 370°C
K (CA): min. span 75°C
E (CRC): min. span 50°C
J (IC): min. span 60°C
T (CC): min. span 75°C
B (RH): min. span 780°C
R: min. span 360°C
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute
(input or temp. control output to power to ground)
S: min. span 380°C
N: min. span 110°C
Minimum span (in °F)
(PR): min. span 670°F
K (CA): min. span 140°F
E (CRC): min. span 90°F
J (IC): min. span 110°F
T (CC): min. span 140°F
B (RH): min. span 1410°F
R: min. span 650°F
S: min. span 690°F
N: min. span 200°F
Note: The described accuracy may be partially not satisfied
when the temperature ranges below 0°C. Consult factory.
OTT2 SPECIFICATIONS
ES-3203 Rev.2 Page 2/4
http://www.m-system.co.jp/
