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Instruction Manual MM850099 ed.02a
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1.2
Specifications
•
IN / OUT parameter
mA and %
•
Ranges:
from 0.00 to 22.00 mA
from 4.00 to 20.00 mA
•
Resolution:
0.01 mA or 0.1%
•
Limits of error:
±0.05% of the r10
µ
A
(The limits of error are defined at the ambient temperature of 23°C ±2°C for 30 days without the use
of the autocalibration program)
•
mA to % conversion :
linear or square
•
Common mode rejection:
>130 dB at 50/60 Hz
•
Normal mode rejection:
>60 dB at 50/60 Hz
•
Temperature stability:
span: ±0,0125% of the reading/°C
zero ±2 µA /°C
•
Internal shunt resistance:
< 50
Ω
•
Output impedance:
Max 1 k
Ω
(20 mA with internal feeder 24V dc)
•
Power supply for external loop:
24V dc with maximum current of 22 mA
•
Display:
high contrast dot matrix alphanumeric LCD display (7x5 dots per character - 16 characters)
•
Display contrast:
4 step keyboard setting
•
Scale factor:
Zero and span programmable within -10000 and +10000
•
Square root:
in combination with scale factor (display limits 0 and+2500)
•
Calibration:
automatic procedure
•
Input protection:
up to 150V with special fuse + electronic protection
•
Power supply:
n. 4 AA alkaline batteries or Ni-Cd rechargeable batteries 1.25V 0.7 A/hour
•
Digital interface:
TTL logic levels
An adaptor from TTL to RS232 is available on request
•
Battery life:
Ni-Cd 8 hours, Alkaline 16 hours continuous operation
•
Battery level indication:
low battery symbol
•
Battery charger module:
supplied as a standard accessory
•
Recharge time:
8 hours to 90% with instrument switched -OFF-
•
Batteries voltage: