Temperature Calibration Equipment
03
Corporate Headquarters
2900 Saturn Street #B
Brea, CA 92821, USA
Salt Lake City Office
1364 West State Rd. Suite 101
Pleasant Grove, UT 84062, USA
Phone: 714-998-6899 Fax: 714-998-6999 Email: sales@additel.com
Rev # 20230407
Process Electronics
Both the ADT875 & ADT878 can be ordered with Additel's Process Calibrator
(PC) option. The Process Calibrator Option combines the many features found
in a thermocouple readout device and process calibrator with the ADT875 &
ADT878 Calibration Furnaces.
This unique option includes Additel’s patented Quick-Push connectors which
accommodate virtually all TC connection types. The process option also
includes the ability to measure a reference grade thermocouple and up to
(4) under test channels. Channels 1 and 2 can measure mA, voltage, perform
switch testing and source 24V DC. In addition to these measurement functions,
the process option provides full documenting capability of creating tasks, saving
"as found" and "as left" results and HART communications for simplied
transmitter work. The snapshot feature allows users to capture all information
displayed on the screen with a touch of the screen. This optional add-on allows
for data logging of all channels using our auto step and a ramp functions.
By utilizing the external reference option users can select to control to the
furnace set point using an external control probe, which helps to reduce
uncertainties. The external control probe feature also facilitates the
handy self-calibration feature!
Input Specifications (Process Calibrator [PC] Option)
TC Measurement Specifications and Calculations
(Process Calibrator [PC] Option)
TC Type
TEMP
(
°
C)
Error (
°
C)
[1]
TC Type
TEMP
(
°
C)
Error (
°
C)
[1]
875 878 875 878
K
(CH1-
CH4)
100 ±0.182 ±0.172
S
(CH1-
CH4)
100 ±1.102 ±1.094
300 ±0.266 ±0.236 300 ±0.924 ±0.899
600 ±0.310 ±0.251 600 ±0.888 ±0.837
900 ±0.397 ±0.304 900 ±0.868 ±0.793
1210 ±0.517 ±0.382 1210 ±0.865 ±0.765
N
(CH1-
CH4)
100 ±0.273 ±0.264
R
(CH1-
CH4)
100 ±1.080 ±1.072
300 ±0.270 ±0.243 300 ±0.869 ±0.844
600 ±0.309 ±0.256 600 ±0.804 ±0.755
900 ±0.368 ±0.285 900 ±0.771 ±0.699
1210 ±0.455 ±0.335 1210 ±0.766 ±0.670
E
(CH1-
CH4)
100 ±0.136 ±0.126
B
(CH1-
CH4)
250 ±3.182 ±3.170
300 ±0.153 ±0.130 300 ±2.645 ±2.631
600 ±0.210 ±0.154 600 ±1.409 ±1.379
900 ±0.291 ±0.202 900 ±1.049 ±1.003
1000 ±0.297 ±0.196 1210 ±0.905 ±0.839
L
(CH1-
CH4)
100 ±0.223 ±0.214
T
(CH1-
CH4)
100 ±0.194 ±0.185
300 ±0.271 ±0.241 300 ±0.191 ±0.166
600 ±0.308 ±0.251 400 ±0.217 ±0.183
900 ±0.522 ±0.448
S
(EXT.
REF)
100 ±0.277 ±0.273
U
(CH1-
CH4)
100 ±0.270 ±0.261 300 ±0.242 ±0.229
300 ±0.189 ±0.164 600 ±0.249 ±0.224
600 ±0.227 ±0.176 900 ±0.258 ±0.220
J
(CH1-
CH4)
100 ±0.186 ±0.177 1210 ±0.266 ±0.216
300 ±0.197 ±0.168
R
(EXT.
REF)
100 ±0.271 ±0.266
600 ±0.256 ±0.200 300 ±0.228 ±0.216
900 ±0.281 ±0.197 600 ±0.227 ±0.202
1200 ±0.414 ±0.294 900 ±0.230 ±0.194
1210 ±0.240 ±0.192
[1] Excluding cold junction compensation errors.
ADT875 & ADT878 Process Calibrator [PC] option electronics
Specification 875-1210 878-1210
TC Measurement Channels
Patented TC terminals:
Accepting S, R, K, B, N, E, J, T, L, and U
TC Measurement Accuracy
Type K
Ch. 1-4 (excluding sensor)
±0.182°C @ 100°C
±0.266°C @ 300°C
±0.310°C @ 600°C
±0.397°C @ 900°C
±0.517°C @1210°C
±0.172°C @ 100°C
±0.236°C @ 300°C
±0.251°C @ 600°C
±0.304°C @ 900°C
±0.382°C @ 1210°C
TC Range
–75 mV to 75 mV (UUT Channels 1-4)
–18 mV to 18 mV (Reference Channel)
TC Resolution 0.0001 mV, Input Impedance < 10Ω
TC Voltage Accuracy
0.02% RD + 8μV (ch. 1-4)
0.01% RD + 2μV (ref ch.)
0.01% RD + 8μV (ch. 1-4)
0.005% RD + 2μV (Ref ch.)
Internal CJC Accuracy
±0.35°C (ch. 1-4)
±0.25°C (ref ch.)
±0.30°C (ch. 1-4)
±0.20°C (ref ch.)
Current Range
–30 mA to 30 mA
Current Accuracy ±(0.02% of rdg+ 2μA)
±(0.01% of rdg + 2μA)
Current Resolution 0.0001 mA
Voltage Ranges –12 V to 12 V and –30 V to 30 V
Voltage Accuracy ±(0.02% of rdg+ 2mV) ±(0.01% of rdg+ 0.6mV)
Voltage Resolution 0.0001 V, Input Impedance >1MΩ
DC 24V Output 24 V ± 10%, MAX 60 mA
Hart Communication Optional (ADT875PC and ADT878PC Models)
Temperature Coefficient
0°C to 8°C and 38°C to
50°C
TC Readouts: ±5 ppm/°C
Current: ±5 ppm/°C
Voltage: ±5 ppm/°C
Switch Test Mechanical or Electrical - Channels 1 & 2 only
Documentation
Up to 1,000 tasks which store up to 10 results each
containing as found and as left data. Snap shot feature
allows for screen captures. Records auto step and ramp
functions