Casella CEL Microtherm WBGT heat stress monitor - Manual (Page 11)

Logger Allows the logger to be configured and
data storage to be started and stopped.
1.5 Alarm Output / RS 232 Socket
An alarm output is available which switches from a logic 0 to 5 V DC
whenever the on-screen alarm is active.
Figure 3 shows line usage in the connector, while Table 2 identifies the line
functions.
1.6 Schedule of Parts
Microtherm Control Unit
Sensor Array
Carry Case
RS 232 Lead and PC Software
Water Bottle
Wicks (pack of 10)
User Manual
4 x NiCad Rechargeable Batteries
12 V power supply
Mains Plug - UK Fitting
Figure 3:
Line identities of the Alarm / RS 232
socket, viewed externally (i.e. also from
the solder bucket side of the plug)
00018
6
4
2
5
3
1
Table 2: RS 232 Connector line functions
Function Pin Number Wire Colour 9-way D Type
(PC RS 232)
Ground 1 Yellow N/A
Alarm 2 Red N/A
RS 232 Receive in 3 White 3 (TX out)
RS 232 Transmit out 4 Black 2 (RX in)
Comms ground 5 Blue 5 (Ground)
4 (DTR), 8 (CTS), 6
(DSR)
Linked together
Page 11 of 44
Description MICROTHERM Heat Stress WBGT &
WinHSM Application Software - User Manual