Large Display Temperature Meters
Instruction Manual
48
Recommended Calibration Points
To calibrate the meter, it is recommended to use the Fahrenheit scale; this will
give a greater degree of accuracy to the calibration. The scale can be changed to
the Celsius scale after calibration is complete; the meter will display temperature
accurately in any scale. The following table shows the recommended low and
high calibration points for all types.
Type
Number
Type of input
Input 1
(Low)
Input 2
(High)
Check
(Middle)
0
Type J T/C
32
°
F 1182
°
F 600
°
F
1
Type K T/C
32
°
F 1893
°
F 960
°
F
2
Type T T/C
32
°
F 693
°
F 360
°
F
3
Type T T/C
32.0
°
F 693.0
°
F 360.0
°
F
4
Type E T/C
32
°
F 1652
°
F 840
°
F
5
Type R T/C
100
°
F 3000
°
F 1500
°
F
6
Type S T/C
100
°
F 3000
°
F 1500
°
F
7
100
Ω
RTD
(0.00385, 0.1
°
)
32.0
°
F
100
Ω
1148.0
°
F
320.12
Ω
590.0
°
F
215.61
Ω
8
100
Ω
RTD
(0.00392, 0.1
°
)
32.0
°
F
100
Ω
1127.0
°
F
320.89
Ω
580.0
°
F
215.87
Ω
9
100
Ω
RTD
(0.00385, 1
°
)
32
°
F
100
Ω
1148
°
F
320.12
Ω
590
°
F
215.61
Ω
10
100
Ω
RTD
(0.00392, 1
°
)
32
°
F
100
Ω
1127
°
F
320.89
Ω
580
°
F
215.87
Ω
Minimum Input Span
Minimum span between input 1 and input 2 signals is 5 mV; consult a
thermocouple table to convert mV to
°
F or
°
C for selected T/C type and specific
temperature range. For RTD inputs the minimum input span is 10
Ω
. Accuracy
within the calibrated span will be improved, but outside the calibrated span
accuracy will not be reliable.
Calibration Verification
To verify calibration:
•
Apply low calibration point signal and note reading.
•
Apply high calibration point signal and note reading.
•
Apply mid-scale signal and note reading.
Noted readings should be within accuracy specification for selected type.
Otherwise, meter should be recalibrated for selected type and required
temperature span.
