Martel Electronics MC1210 - Manual (Page 50)

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Table 12: Frequency Measurement/Source
Range Accuracy (% of reading ± floor)
Read 2.0CPM - 600.0CPM 0.05% ± 0.1CPM
1.0Hz - 1000.0Hz 0.05% ± 0.1Hz
1.00KHz - 10.00KHz 0.05% ± 0.01KHz
Source 2.0CPM - 600.0CPM 0.05%
1.0Hz - 1000.0Hz 0.05%
1.00KHz - 10.00KHz 0.250%
Input voltage amplitude range on frequency is 1V to 20V zero based square wave only.Output amplitude is
adjustable from 1V to 20V, and is a square wave with 50% duty cycle.For output frequency, a slight negative
offset of approximately -0.1V is present to assure zero crossing.
Table 13: Resistance Measurement
Range Accuracy (% of reading ± floor)
Ohms low 0.00 Ω - 400.0Ω 0.025% ± 0.05 Ω
Ohms high 401.0 Ω - 4000.0Ω 0.025% ± 0.5 Ω
Table 14: Resistance Source
Range Excitation Current Accuracy (% of reading ± floor)
Ohms low 5.0 Ω - 400.0Ω 0.1mA - 0.5mA 0.025% ± 0.1 Ω
5.0 Ω - 400.0Ω 0.5mA - 3mA 0.025% ± 0.05 Ω
Ohms high 400 Ω - 1500Ω 0.05mA - 0.8mA 0.025% ± 0.5 Ω
1500 Ω - 4000Ω 0.05mA - 0.4mA 0.025% ± 0.5 Ω
Note: Unit is compatible with smart transmitters and PLCs. Frequency response is <= 5ms.
Table 15: Thermocouple Measurement/Source
Range Accuracy (% of reading ± floor)
Read (mV) -10.000mV - 75.000mV 0.02% ± 10 μV
Source (mV) -10.000mV - 75.000mV 0.02% ± 10 μV
Maximum current output in voltage ranges is 1mA with an output impedance of <= 1 Ω
Table 16: Thermocouple Read and Source (errors in °C)
Range (°C) Accuracy (°C)
TC Type Minimum Maximum CJC OFF CJC ON
J -210.0 -150.0 0.4 0.6
-150.0 1200.0 0.2 0.4
K -200.0 -100.0 0.5 0.7
-100.0 600.0 0.2 0.4
600.0 1000.0 0.3 0.5
1000.0 1372.0 0.4 0.6