Yokogawa EXA SC202 2-Wire Conductivity Transmitter/Analyzer - Manual (Page 90)

IM 12D08B02-01E
3-2 Appendix
2/3
QIS 12D08B02-01E
(9) After the test at 20 mA, press the [ENT] key twice.
Table 1
Current output (mA) Current output (mA DC)
4.0 4 ±0.02
12.0 12 ±0.02
20.0 20 ±0.02
3.3 Temperature Indication Check
(1) Check that the temperature sensor type indicated on the message display is “Pt1000.”
(2) Change the value of the decade resistance box 1 (temperature) as shown in Table 2 and
check the data display. The temperature value on the data display must be within the range
shown in Table 2.
(3) Press the [ENT] key until the message display shows “8k55.”
(4) Press the [ENT] key. A “*WAIT” message will flash.
Table 2
Decade box 1 resistance (:) Data display (°C)
960.9 -10 ±0.3
1289.8 75 ±0.3
1721.6 190 ±0.3
1904.6 (*) 240 ±0.3
(*) This item is checked under measurement mode.
3.4 Resistance (Conductivity) Indication Check
(1) Check that in the message display “*WAIT” has disappeared and instead “RES.1” appears.
(2) Set decade resistance box 2 to 10 : and check the data display. The resistance must be
within the range shown in Table 3.
(3) Press the [ENT] key. The message display will show “RES.2.”
(4) Set decade resistance box 2 to 100 : and check the data display. The resistance must
be within the range shown in Table 3.
(5) Press the [ENT] key. The message display will show “RES.3.”
(6) Set decade resistance box 2 to 1 k: and check the data display. The resistance must be
within the range shown in Table 3.
(7) Press the [ENT] key. The message display will show “RES.4.”
(8) Set decade resistance box 2 to 10 k: and check the data display. The resistance must
be within the range shown in Table 3.
(9) Press the [ENT] key. The message display will show “RES.5.”
(10) Set decade resistance box 2 to 100 k: and check the data display. The resistance must
be within the range shown in Table 3.
(11) Press the [ENT] key. The message display will show “READY.”
(12) Press the [ENT] key to restart the transmitter.
This completes all the tests.
Table 3
Message display Decade box 2 resistance Data display
RES.1 10 : 10.00 ±0.05 :
RES.2 100 : 100.0 ±0.5 :
RES.3 1 k: 1.000 ±0.005 k:
RES.4 10 k: 10.00 ±0.05 k:
RES.5 100 k: 100.0 ±0.5 k: