Omega 27, 25, 26, 24 manual Calibration Adjustments

Calibration Adjustments:

NOTE: Do not deviate from the calibration adjustment sequence that follows. This will ensure that adjustments to be stored in EEPROM go to the correct locations.

1.Perform meter-mode adjustments and verifications per Table 3 (use Table 5 for RTD-Thermistor models).

2.Hit OPR key (Flashing 'RTD' annunciator turns off).

3.Install J1 jumper.

4.Set unit to CALIB mode, RTD-100, °F.

5.Switch current source to OPERATE mode.

6Perform calibrator-mode adjustments and verifications per Table 4 (use Table 6 for RTD-Thermistor models).

7.Turn off unit. Remove tape holding battery.

8.Re-install back cover. Resistance-function calibration is complete.

Table 3: Calibration of Meter-Mode Resistance Functions (RTD-100/1000)

	Sensor	Unit			Unit
Step	Select	Input	Adjust	Verify	Reading*
1	RTD-100	390.26Ω	P1**		1562.0°F±0.5°F
2	RTD-100	100.00Ω		√	32.0±0.1°F
3	RTD-100	18.49Ω		√	–328.0±0.2°F
4	RTD-1000	3,902.6Ω	P1**		1562.0°F±0.5°F
5	RTD-1000	1000.0Ω		√	32.0+0.1°F
6	1,000Ω	900.00Ω	P1		900.00Ω
7	1,000Ω	1.00Ω		√	1.00±0.10Ω
8	10,000Ω	9,000.0Ω	P1		9000.0Ω
9	10,000Ω	10.0Ω		√	10.0±1.0Ω

*exclusive of noise.

**adjust as necessary to obtain steps 2, 5.

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