1-1
1. GENERAL
1.1 Model Check and Information
1. Model check
A label showing the model is stuck to
the upper face of the case as well as
the bottom face of the internal unit
after drawing out the chart cassette.
MODEL AH3720-N00
No. 987B001
See 5.1.
2. Information
1) Attached chart
Chart No. EH-01001 (0 to 100) will be delivered. Charts
conforming to various scales are also available as shown below.
Scale Chart No. Scale* Chart No.
0 to 50 ET-024 0 to 50°C EH-05045
0 to 100 EH-01001 0 to 100°C EH-05001
0 to 150 ET-018 0 to 150°C EH-05044
0 to 200 EH-01013 0 to 200°C EH-05043
0 to 300 EH-01004 0 to 300°C EH-05041
*Each scale is linear. It is usable irrespective of the types of
thermocouples and resistance thermometers.
2) Printing restrictions
1.None of digital printing is done at a faster chart speed than
251 (mm/h).
2.Trace printing is executed at fixed intervals. However, these
executed intervals may be more or less longer if they overlap
with digital printing.
3.Digital printing is executed by 1-pin dots and a character is
composed of 7 lines. If power supply is turned off halfway, a
complete character cannot be formed.
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Models
AH 3 7 2 0 – N 0 0
Input signal
[7] Fixed: Universal input (DC voltage, thermocouple, Resistance thermometer)
No. of input points (A,B,D: option)
6: 6-point 2: 12-point 4: 24-poin….Measuring interval is approx. 5 sec. per 6 points
A: 6-point B: 12-point D: 24-point….Measuring interval is approx. 1 sec. per 6 points
Display specifications
0: Multi-point sequential display
5: Multi-point simultaneous display (Simultaneous display of 6, 12 points input, 12
points sequential display of 24 points input)
Communications interface (option)
N: None A: RS-422A S: RS-485 R: RS-232C
Alarm output and remote contacts (option)
0: None
1: 6 MOS relay outputs + remote contacts
2: 6 mechanical relay 'c' contact outputs + remote contacts (*)
3: 12 MOS relay outputs + remote contacts
4: 12 mechanical relay ‘c’ contact outputs + remote contacts (*)
5: 24 MOS relay outputs + remote contacts
6: 24 mechanical relay ‘c’ contact outputs + remote contacts (*)
A: 6 mechanical relay ‘a’ contact outputs + remote contacts
B: 12 mechanical relay ‘a’ contact outputs + remote contacts
D: 24 mechanical relay ‘a’ contact outputs + remote contacts
*: Mechanical relay ‘c’ contact outputs do not conform to the international safety
standards.
Others (option)
0: None 1: Printing format + high-speed trace printing
Model
Serial No.
Drawing out the chart cassette
Reference
Lavel1
Lavel2
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