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Summary of Contents for Altek 222A
- Page 1 FIELD CALIBRATION PROCEDURE FOR ALTEK MODEL 222A DRAWING NO. 1-827 Date Rev. Revision Record Review Approve 8FEB94 Initial Release 25AUG98 Corrected Specifications RPC 26AUG98...
- Page 2 The 222A should display 0.000mV ±0.006mV. Adjust the millivolt source to +20.000mV, the 222A should read 20.000mV ±0.005mV. If the 222A does not read within ±0.005mV, adjust the D.C. mV calibration pot #2, figure 1, so that the 222A reads within ±0.005mV of 20.000mV.
- Page 3 Adjust the millivolt source to +77.600mV. The 222A should read 77.600mV ±0.009mV. NOTE: The least significant digit may be bouncy. If the 222A does not read 77.600mV ±0.009mV, adjust the Lo Gain pot #3, figure 1, so that the 222A reads within ±0.009mV of 77.600mV.
- Page 4 Storing QUIK-CHEK Values Turn the unit on to SOURCE. With the 222A QUIK-CHEK switch in the HI position, dial the knob clockwise and observe that the temperature on the display increases. Observe that turning the knob faster causes the display to increase more rapidly.
- Page 5 Note 1 Ice Bath Construction 1) Prepare a Thermos (or equivalent vacuum insulated bottle) by drilling a hole in its cap to accept the thermocouple or use a standard laboratory cork. 2) Fill the Thermos with shaved or crushed ice made from distilled water. 3) Fill the Thermos with enough distilled water so that the ice becomes slush, but not enough to float the ice.
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