MICROTSCM (07/09)
Page 10
REV 2.4
Terminal J6
Connection Purpose
Impedance
Terminal 1
0-10V
50K ohm or greater
Terminal 2
0-1V
5K ohm or greater
Terminal 3
0-100 mV
500 ohms or greater
Terminal 4
Common
N/A
The 4-20 mA connection is made at J5. Terminal 1 is positive, Terminal 2 is negative. The
recorder load may be up to 1000 ohms.
Galvanic isolation may be achieved by removing the jumper at J13. This procedure will
require the removal of the entire rear cover assembly.
4.5.3 Alarm Contacts
Connections can be made to the two user settable alarms and the sensor alarm at the
terminal block labeled ALARMS.
Note: these alarms are fail safe and will revert to an alarm condition in the event of no
power being applied to the analyzer.
The maximum alarm contact ratings are 250VAC @ 5.0A. Ensure that loads do not
exceed these ratings.
As indicated on the PCB, the following are terminal blocks:
J1 – Alarm 1
J2 – Alarm 2
J3 – Alarm 3
In all cases the following connections apply:
Terminal 1: Normally Closed (N.C)
Terminal 2: Normally Open (N.O.)
Terminal 3: Common (C)
Do not use wire larger than #14 AWG as the terminal blocks will not accept it.
