Unitronics Jazz JZ20-J-UN20 - Advanced Input Specifications; RTD Input Accuracy and Status; Thermocouple Input Specifications

Installation Guide
14
Unitronics
Accuracy
 3%
Status indication
Yes – if an analog input deviates above the permissible range, its
value will be 1024/4096 (depends on the selected resolution).
Input cable length
Up to 30 meters, shielded twisted pair
RTD Inputs
Number of inputs
JZ20-UA24 / JZ20-J- UA24
JZ20-UN20 / JZ20-J-UN20
2
1
RTD Type
PT100
Input range
-200 to 600C/-328 to 1100F. 1 to 320Ω. See Note 6
Galvanic isolation
None
Conversion method
Voltage to frequency
Resolution
0.1C/0.1F - See Note 7
Conversion time
300mS minimum per channel, depending on software filter type
Input impedance
>10MΩ
Auxillary current
150μA typical
Accuracy
±0.44%
Status indication
Yes. See Note 8
Notes:
6. The device can also measure resistance within the range of 1-320Ω
at a resolution of 0.1Ω.
7. The input analog value represents the temperature value as follows:
Analog Value: 260 Actual measured temperature: 26.0C
8. The analog value can indicate faults as shown below:
Value
Possible Cause
32767
Sensor is not connected to input, or value exceeds permissible range
-32767
Sensor is short-circuited
Thermocouple Inputs
Number of inputs
JZ20- UA24/ JZ20-J-UA24
JZ20-UN20 / JZ20-J-UN20
2
1
Input range
See Note 9
Isolation
None
Conversion method
Voltage to frequency
Resolution
0.1C/ 0.1F maximum. See Note 10
Conversion time
100mS minimum per channel, depending on software filter type
Input impedance
>10MΩ
Cold junction compensation
Local, automatic
Cold junction compensation error
±1.8C / ±3.24F maximum
Absolute maximum rating
±0.6VDC
Accuracy
±0.44%
Warm-up time
½ hour typically, ±1C/±1.8F repeatability
Status indication
Yes. See Note 11
Notes:
9. The device can also measure voltage within the range of -5 to 56mV, at a resolution of
0.01mV. The device can also measure raw value frequency at a resolution of 14-bits
(16384). Input ranges are shown in the following table: