Omega CL940A - Page 36

Appendices
A-i
A. REQUIRED EQUIPMENT
EQUIPMENT
FUNCTION
RANGE
SPECIFICATION (2-SIGMA)
DMM
DC Voltage
Measurement
-13mV to 83 mV
± (30 ppm of reading + 9 ppm of range)
Calibrated
temperature
measurement
device
Measure
ambient
temperature
during cold
junction test.
18°C to 28°C ±40 mK (.04°C)
Controlled
Environment
Insulated box to create a Controlled Environment; a very stable, low gradient air
bath.
Copper Mini-
TC Cable
NOTE: This process requires a set of COPPER mini-TC connectors, with good quality,
low-thermals wire. These cannot be tinned.
(2) Copper Mini-TC Cables required for Voltage Gain and Offset alignment only. This
cable does not require calibration. See Figure 11 above.
One end shall be terminated with a male miniature copper thermocouple connector for
connection to the UUT. The opposite end shall be terminated with copper connections
appropriate for the DMM.
Straightened
Paper Clip
Required to access the calibration enable switch. Any rigid wire, approximately 0.8
mm in diameter, may be used.