Installation; Wiring To A 4200 Series Flow Meter; Parameter Sensing With Isco 4200 Series Flow Meters; Installation Of Parameter Probes - Teledyne 4250 Installation And Operation Manual

4.7.1 Installation

4.7.2 Wiring to a 4200 Series
Flow Meter
4.8 Parameter Sensing
with Isco 4200 Series
Flow Meters
4.8.1 Installation of
Parameter Probes
The High-Low Alarm Relay Box is enclosed in a high-strength
plastic box and is easily installed. Mount the unit with cor-
rosion-resistant hardware through the 2 holes in the stainless
steel mounting plate attached to the case. Two threaded holes in
the case allow the use of either
pression bushings. While the alarm box is suitable for use in
damp locations, do not install it where there is any possibility of
submersion. Where temperatures are expected to fall below
freezing, Teledyne Isco recommends installation of the alarm box
indoors or in a heated location, as the manufacturer of the micro-
processor does not specify its operation below 32° F (0° C).
Hazard of electric shock! Use the relay contacts
for low voltage (24 V) pilot duty only. Do not wire
120 VAC or higher voltages to the relay contacts.
Connecting the High-Low Alarm Relay Box to a 4200 Series Flow
Meter requires a cable and an M/S connector. A special cable, 25
feet long, is available from Teledyne Isco. On one end of the cable
is a 4-pin, male M/S connector. Plug this connector into the
Remote Printer/Rain Gauge connector on the flow meter. The
other end of the cable has 3 stripped wires. Attach them to the
alarm box according to the instructions in the alarm box
instruction manual.
B
LACK
G
REEN
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Isco 4200 Series Flow Meters have the capability of displaying,
recording, and (if Flowlink software is used) storing data pro-
vided from parameter sensors. The parameter sensors available
for the Isco flow meters are for temperature, dissolved
oxygen (DO), pH, (concerned with the acidity or alkalinity of a
solution), and the YSI 600 Multi-Parameter Sonde. See
Section 2 for information on the YSI 600 Sonde. This section
covers the Isco pH, D.O., and temperature sensors.
The parameter probes, as well as other Isco probes such as the
submerged probe and area-velocity probe, require complete, con-
tinuous submersion in the flow stream for proper operation. Dry
operation can damage the pH and D.O. probes. The YSI Sonde
(only) may be suspended vertically in the stream. Teledyne Isco
offers a series of rings that provide mounting for the probes in
round pipes.
• Each probe snap-mounts to a specialized sensor carrier.
• The sensor carrier then attaches to the rings or
mounting straps.
Section 4 Options and Accessories
1
/ " conduit fittings or com-
2
DANGER
+12 VDC
–12 VDC
DATA
HITE
4250 Flow Meter
4-13