Wahl Digi-Stem DST600 Series User Manual page 15

8.3. DST620/660 – Consists of DST600/640 meter with an isolated secondary
sensor and 4-20 mA programmable transmitter. Transmitters are
programmed at the factory. The DST620/660 provides an isolated
current output from the same probe shank. This reduces the number of
penetrations made into the process and reduces error due to non-
uniformity of the process.
8.3.1. Connection is made by hardwiring to the transmitter power supply
terminals as shown in Figure 8. A ½" NPT female fitting on the side
of the enclosure allows access to connections. This connection
should be sealed to prevent moisture, water or dust entry. We
recommend using a liquid-tight conduit fitting or cable gland for wire
entry.
8.3.2. Secondary RTD/transmitter specifications are as follows:
R0
Accuracy
Temperature coefficient
Connection
Programming
Power Supply Req.
Range
Accuracy
Fault monitoring
8.4. DST621/661 - All the features of the DST620/660, and includes a Turck
4-pin connector mounted in the side enclosure fitting that is pre-wired to
the transmitter. This allows convenient user connection/disconnection.
This option requires the use of a connecting cable or connector (ordered
separately). Connector wiring and cable wiring are shown in Figure 9.
See below for connectors and cables:
DST600 Series USER MANUAL
100 ohms per DIN EN 60751
Class A per DIN EN 60751
TCR = 3850 ppm/K
4-wire
PC programming (optional cable required)
10 to 35 VDC
-58°F to 500°F (-50 to 260°C)
Greater of ±0.4°F or .1% ± (0.2°C or .1%)
Programmable Hi (>21.6 mA) or Low (<3.5 mA)
OR
RTD Input
Fig. 8 – DST620/660 transmitter connection
15 of 20
Programming
Port
+
I OUT
I OUT -