5. The simulator functions
5. THE SIMULATOR FUNCTIONS
Simulator ALMEMO
®
KA7531 is a universal generator of sensor and transmit-
ter variables. For Pt100 sensors it incorporates 5 precision resistors in 4-con-
ductor circuitry. Voltage signals from 7 different thermocouple types with set-
table cold junction temperature are calculated and output via a 16-bit D/A con-
verter. Transmitter signals 0-10 V and 0-20 mA are generated in exactly the
same way. Pt100, voltage, and current signals are electrically isolated from
one another. The output values can be specified digit-by-digit or set manually
in selectable steps or automatically. It even provides continuous ramp genera-
tion with settable limit values. Digital signals of 0.01 Hz to 500 kHz can be
used as frequency with selectable pulse width or pulse / pause duration. A
continuity check is also provided; this measures the voltage drop and, in the
event of the result exceeding a settable threshold, issues an acoustic signal.
The simulator can also, via the interface, be controlled from a PC or operated
in an ALMEMO
®
network.
6. CONNECTING THE SIMULATOR
To supply simulator variables to the appropriate devices the simulator incor-
porates 5 ALMEMO
®
sockets P0 to P4 (1). The accessories include one
ALMEMO
®
test connector (7) with 6 terminals for connecting the Pt100 resis-
tors in 4-conductor circuitry. For all other signals there is the connector with
two-pole cable and banana plugs. For the continuity check test probes are
also provided.
Connection of Pt100 simulator with ALMEMO
®
test connector ZA 100-TS in 4-
conductor circuitry (terminals A, B, C, D):
Connection of voltage signals, current signals, digital signals, and continuity
check via 2-contact ALMEMO
®
test cable ZA 1000-TK fitted with banana plugs,
(terminals A = +, B = -):
6 ALMEMO
®
KA7531
