Isotech milliK, User Maintenance Manual/Handbook

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© Isothermal Technology Page 69 of 102 923 milliK manual - issue: 1.10
the ‘500k Ω Calibration Adjustment’ Window and use the same procedure described for
calibrating the 115
Ω
range (see section 5.3.2) to adjust this range.
5.3.5 Adjusting Zero Voltage Offsets
Connect a 0mV short circuit (see section 5.1.2) to the miniature thermocouple connector for
channel 1. In the ‘Calibration Menu’ Window, use the
↑ ↑ ↑ ↑ ↓ ↓ ↓ ↓
keys to select ‘0mV Range’ and
then press the
↵ ↵ ↵ ↵
key to proceed to the ‘0mV Calibration Adjustment’ Window. Use the
← ← ← ← → → → →
keys to select channel 1:
Press the
OK
(F4) key to start the calibration adjustment. Once started, the calibration
adjustment process cannot be aborted. Repeat the procedure on Channel 2.
5.3.6 Adjusting Voltage Gain
Connect a calibrated (nominally) 100mV signal to channel 1 (see section 5.2.4 for
information on generating a suitable signal). In the ‘Calibration Menu’ Window, use the
↑
↑ ↑
↑ ↓
↓ ↓
↓
keys to select ‘115mV Range’ and then press the
↵
↵ ↵
↵
key to proceed to the ‘115mV
Calibration Adjustment’ Window. Use the
← ← ← ← → → → →
keys to select channel 1 and then use the
↑ ↑ ↑ ↑
↓ ↓ ↓ ↓
keys to select each parameter in turn and press the
↵ ↵ ↵ ↵
key to enter their values. The
‘Standard S/N’ and ’Additional Info.’ fields can be used to record information on the
standard used. If you generate the 100mV using a 10
Ω
resistor with serial number 2791555
and a 10mA current source with serial number 2-M52-S52, suitable entries would be: