Uncertainty Of Measurement - Isotech TTI 7 PLUS User Maintenance Manual/Handbook

UNCERTAINTY OF MEASUREMENT

SENSOR RANGE °C
Pt25 -200 to -100
Pt25 -100 to +500
Pt25 +500 to +670
Pt100 -200 to -100
Pt100 -100 to +500
Pt100 +500 to +670
The Inputs are linearised for the following thermocouple Types B,E,J,K,L,N,R,S,T,U,Au/Pt and in accordance with the following
Standard, NIST 175, ITS 90. Types C & D to ASTM E988, types L and U to DIN 43710.
Reference Junction compensation may be selected for the following modes:-
Automatic: Internal Reference Junction range 0 to +40C
External: Via Pt100 sensor connected to channel A or B range 0 to +100C
OFF: Turns the Reference Junction OFF = 0C
TYPE RANGE
C
B +250 to +1820
C 0 to +2315
D 0 to +2315
E -200 to +1000
J -210 to +1200
K -200 to +1372
L -200 to +500
N -200 to +1300
R -50 to +1768
S -50 to +1768
T -200 to + 400
U -200 to +600
Au/Pt 0 to +1000
* Apply to readings above 600C
The above figures apply to values with Reference Junction switched off.
Reference Junction uncertainty when used in automatic mode (INT) is better than 0.1C at + 20C with a deviation
of typically 0.01C/C over the range 0 to 100C.
CALIBRATION:
BATTERIES:
WORKING
RESISTANCE
2.5 to 15
15 to 75
75 to 115
10 to 60
60 to 280
280 to 460
DISPLAY
RESOLUTION
RESOLUTION
C F or K
V
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
0.01 1.0
Digital security code protected. Default number set 9252
1 x Sealed Lead Acid Battery 6V 2.8AH to power digital circuit and display
1 x Sealed Lead acid Battery 6V 1.2 AH to power analogue circuit
1 x Lithium Battery T068AA for data logging memory
Operating time after full charge 8 hours with backlight, 14 hours without
backlight
0...50°C rel. humidity less than 90% non condensing
CURRENT RESOLUTION °C, °F,
1 mA
1 mA
1 mA
0.5 mA
0.5 mA
0.5 mA
UNCERTAINTY
@ 20C  5C 1 YEAR
 (0.025% Rdg + 0.006%FS) *
 (0.075% Rdg + 0.005%FS)
 (0.075% Rdg + 0.005%FS)
 (0.026% Rdg + 0.004%FS)
 (0.03% Rdg + 0.005%FS)
 (0.035% Rdg + 0.006%FS)
 (0.03% Rdg + 0.005%FS)
 (0.035% Rdg + 0.005%FS)
 (0.02% Rdg + 0.015%FS)
 (0.02% Rdg + 0.015%FS)
 (0.025% Rdg + 0.015%FS)
 (0.025% Rdg + 0.015%FS)
 (0.02% Rdg + 0.015%FS)
Page 8 of 44
UNCERTAINTY @
K
0.001
0.001
0.001
0.001
0.001
0.001
UNCERTAINTY
@ 20%  5C 60 Days
 (0.02% Rdg + 0.006% FS) *
 (0.05% Rdg + 0.005% FS)
 (0.05% Rdg + 0.005% FS)
 (0.01% Rdg + 0.004% FS)
 (0.008% Rdg + 0.005% FS)
 (0.01% Rdg + 0.006% FS)
 (0.008% Rdg + 0.005% FS)
 (0.01% Rdg + 0.005% FS)
 (0.005% Rdg + 0.015% FS)
 (0.005% Rdg + 0.015% FS)
 (0.005% Rdg + 0.015% FS)
 (0.005% Rdg + 0.015% FS)
 (0.005% Rdg + 0.015% FS)
20°C ±5°C
0.02 °C
0.01 °C
0.02 °C
0.02 °C
0.01 °C
0.02 °C
TEMPERATURE
COEFFICIENT /C
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
7 ppm Rdg + 6 ppm FS
TTI-7 Iss.02 – 06/11