Eurotherm 5100e, Руководство пользователя

Страница: 53 / 136

100 MM GRAPHICS RECORDER: USER GUIDE
User Guide
Page 49
HA027271
Issue 12 Mar 04
4.3.3 CHANNEL/ALARM CONFIGURATION (Cont.)
Example: A type J thermocouple is used to measure a temperature range of 100 to 200 degrees Celsius. This thermo-
couple output is transmitted to the recorder by a 4 to 20 mA transmitter, for display as an efficiency value between 0
and 100%. In such a case, the following values would be set up:
Input type = milliamp
Input range low = 4.0
Input range high = 20.0
Scale low = 0.0
Scale high = 100
Scale units = %
Linearisation range low = 100
Linearisation range high = 200
Linearisation type units = degrees C
Linearisation type = Type J thermocouple.
Input shunt value = 250 ohms
Note: The following description shows all possible fields. The recorder itself edits the list and shows only
those fields appropriate to the setup so far. For example, the 'Shunt' field appears only for mA input type.
CHANNEL NUMBER
The current channel and its descriptor are displayed. Touching the window area allows another channel to be selected
for configuration.
VALUE
This field shows the current value of the selected channel along with either 'Unadjusted' or the time and date of adjust-
ment.
INPUT TYPE
Select thermocouple, millivolt, Volt, milliamp, RTD, Ohms, Digital (not channel 1),Slave Comms or Test as input
type. Slave Comms must be selected if the channel is to be written-to via Modbus TCP..
LIN TYPE
The following linearisation tables are available as standard:
Linear, square root, x
3/2
, x
5/2
, UserLin1 to UserLin4 (see section 4.3.8 for details).
Thermocouple types B, C, D, E, G2, J, K, L, N, R, S, T, U, NiMo/NiCo, Platinel, Ni/NiMo, Pt20%Rh/Pt40%Rh
Resistance thermometer (RTD) types Cu
10
, Pt
100
, Pt
100
A, JPT
100
, Pt
1000
, Ni
100
, Ni
120,
Cu
53
.
For input ranges, accuracies etc. associated with the above thermocouple/RTD tables, see the specification section
(Annex A) of this manual.
INPUT LOW
Enter the lowest value to be applied to the input terminals (e.g.4.00).
INPUT HIGH
Enter the highest value to be applied across the input terminals (e.g. 20.00).
SHUNT
Allows a shunt resistor value to be entered for input type = mA. Commonly used values are 100 ohms and 250 ohms.
Note that shunt resistors are connected to the input connector. The recorder cannot detect whether a shunt is fitted, or
if one is, what value it has. Therefore it is the responsibility of the user to ensure that the ohmic value of any shunt
fitted matches the shunt value entered in this field.